Power amplification circuit with similar combining and cancellation

Abstract

Provided in the present disclosure is a power amplification circuit with similar combining and cancellation. An output end of a parallel or series circuit for main-signal-branch similar input combining and input cancellation is connected to a main power amplification circuit, so as to form a power amplification circuit with similar combining and cancellation that has the function of a combined main circuit with branch similar input combining and input cancellation; and an output end of a combined-connection circuit for main-signal and branch similar input combining in the parallel or series circuit for main-signal-branch similar input combining and input cancellation is connected to an input end of the main power amplification circuit, so as to form a combined main circuit for branch similar input combining and a main signal. The present disclosure improves the linear ACPR value of a Class-C-like main power signal to 30-35 dBc or more after gain linear extension of a main power signal of a combined circuit for branch similar input combining and a main signal, and also improves the linear ACPR value of a Class-C-like main power signal to 40-45 dBc or more after gain linear extension of a main power signal of a combined main circuit with branch similar input combining and cancellation.

Description

A power amplifier circuit with similar combining and canceling properties

[0001] This disclosure claims priority to Chinese Patent Application No. 2024108039766, filed on June 20, 2024, entitled "Power Amplifier Circuit with Similar Combination and Cancellation", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of signal power amplification technology, and specifically to a power amplifier circuit with similar combining and canceling characteristics. Background Technology

[0003] In signal power amplification equipment, the output power performance specifications require that the power amplifier circuit have a Class A, Class AB, or similar Class AB gain linearity, and that the distortion signal in the output power meets the power linearity ACPR value requirement, as well as high operating efficiency at rated output power. In recent years, to achieve Class A or Class AB gain linearity in power amplifier circuits and meet certain power linearity requirements, existing technologies include: feedforward technology, analog predistortion technology, digital-analog predistortion technology, digital predistortion technology, and hybrid technologies of analog predistortion or digital-analog predistortion and feedforward, Doherty power amplifier technology in feedforward, and feedforward cancellation combining technology.

[0004] Among them, for Class A, Class AB, and Doherty-like Class AB power amplifier circuits, analog predistortion technology, analog digital predistortion technology, and digital predistortion technology all have the function of canceling the distortion signal in the output power of Class A, Class AB, or Class AB-like Doherty power amplifier circuits, especially when combined with Doherty, the cancellation efficiency is higher.

[0005] For Class C or similar Class C power amplifier circuits, analog predistortion, analog digital predistortion, and digital predistortion techniques cannot extend the linear dynamic range of Class C gain or extend the linear dynamic range of the output gain of a Class C power amplifier circuit with a certain linear dynamic range of gain to a power dynamic range with a smaller output main power.

[0006] The Doherty power amplifier circuit is formed by combining the impedance transformation networks of two power amplifiers, one Class C and the other Class A or Class AB. This combined circuit achieves a gain linear dynamic range similar to Class A or Class AB amplifiers, enabling pre-distortion cancellation with DPD, APD, and AD converters. Because DPD, APD, and AD converters contain distorted signals from the main power signals of Class A and Class AB amplifiers, they cannot compensate for the gain linear dynamic range of Class C amplifiers. Class C amplifiers offer efficiency but lack linearity, while Class A and Class AB amplifiers improve linearity but reduce efficiency. Feedforward amplifiers and AD converters can improve both linearity and efficiency. APD and DPD+Doherty circuits can improve both linearity and efficiency. In feedforward amplifiers, the main power amplifier is a Doherty feedforward combiner with cancellation, or because the gain extension range of Class C's own feedforward cancellation is limited. When the extension range meets the requirements, Class C efficiency decreases; when Class C efficiency is high, the extension range is insufficient. In AD+ or APD+ feedforward circuits, the distortion extraction circuit in the feedforward circuit does not contain Class C distortion signals because the linearity of the power amplifier cannot meet Class A or Class AB requirements, or the range from P1dB to more than 30dB back-off. Alternatively, the power amplifier in the feedforward circuit may not meet the APD or AP cancellation requirement of 45dBc, while the feedforward power amplifier itself has certain linearity requirements, reaching more than 35dBc. Therefore, the efficiency of the feedforward power amplifier itself will decrease.

[0007] Analog predistortion, analog-digital predistortion, and digital predistortion techniques offer only minimal or almost no compensation for the output distortion signal of Class C power amplifier circuits with very low gain linearity. For Class C or similar power amplifier circuits with gain linearity within a certain range, the compensation effect diminishes as the gain linearity range expands towards smaller output power, decreasing to a value within half or one-third of the compensation value for the output distortion signal of Class A or Class AB power amplifier circuits. At this point, the efficiency of similar Class C power amplifier circuits approaches that of Class AB power amplifier circuits, and still does not meet the gain linearity requirement of Class A, Class AB, or similar Class AB power amplifier circuits.

[0008] Feedforward technology can meet the output linearity requirements of power amplifier circuits, such as Class AB and Doherty. However, the overall efficiency of the power amplifier circuit after the feedforward technology compensates for the output linearity requirements of the Doherty power amplifier circuit is much lower than that after the DPD compensates for the output linearity requirements of the Doherty power amplifier circuit.

[0009] In the AP or APD feedforward technology, the pre-distortion section circuit, composed of a Class C or similar Class C power amplifier circuit after compensation, extracts the compensation-compensated front part distortion signal and then cancels the compensation-compensated front part distortion signal in the rear part circuit composed of the feedforward cancellation delay circuit in the feedforward technology, because the front part circuit is the same as the compensation of the Class C or similar Class C power amplifier circuit in analog pre-distortion technology or analog-digital pre-distortion technology.

[0010] The aforementioned linearization techniques and their combination with high-efficiency power amplifier techniques all have shortcomings. Therefore, how to further improve the efficiency and linearity of power amplifier circuits is a topic worthy of in-depth research.

[0011] Summary of the Invention

[0012] The purpose of this disclosure is to provide a power amplifier circuit with similar combining and cancellation functions. Specifically, it represents a power amplifier circuit with similar combining and cancellation functions. Under small-signal conditions, this circuit can improve the linear ACPR value of the main power signal of the branch similar input combining circuit and the main signal combining circuit to a linear extension similar to Class C main power signal of 30-35 dBc or more, and at the same time improve the linear ACPR value of the main power signal of the branch similar input combining circuit and the canceled combining circuit main circuit to a linear extension similar to Class C main power signal of 40-45 dBc or more.

[0013] This disclosure proposes a technical solution to solve the above-mentioned problems, specifically a power amplifier circuit with similar input combining and cancellation, wherein the output terminal of a parallel circuit of similar input combining and input cancellation of the main signal branch or a series circuit of similar input combining and input cancellation of the main signal branch is connected to the main power amplifier circuit to form a power amplifier circuit with similar input combining and input cancellation of the branch main signal, wherein the output terminal of the circuit connecting the main signal and the similar input combining of the branch main signal in the parallel circuit of similar input combining and input cancellation of the main signal branch or the series circuit of similar input combining and input cancellation of the main signal branch is connected to the input terminal of the main power amplifier circuit to form a main circuit combining the similar input combining of the branch main signal and the main signal.

[0014] In the main circuit of the similar input combining circuit and input cancellation combining circuit of the power amplifier circuit described above, the parallel circuit of the main signal branch similar input combining circuit and input cancellation is formed by connecting the main signal and the branch similar input combining circuit in parallel through a parallel input shunting circuit or a parallel digital input shunting circuit and a parallel output combining circuit, and the analog input terminal of the two circuits of the branch similar input cancellation circuit, or one analog input terminal and one digital input terminal of the two circuits, or the digital input terminal and the output terminal of the two circuits; or by connecting the main signal and the branch similar input cancellation circuit in parallel through a parallel input shunting circuit or a parallel digital input shunting circuit and a parallel output combining circuit, and the two circuits of the branch similar input combining circuit in parallel. The circuit consists of an analog input terminal or one analog input terminal and one digital input terminal in a two-way circuit, or the digital input terminal and the output terminal of a two-way circuit; or it consists of an analog input terminal and one digital input terminal and the output terminal of a two-way circuit, or a parallel circuit for combining similar inputs and canceling inputs, connected in parallel with the input terminal of the main signal delay adjustment circuit for the corresponding input combining or input canceling; wherein the input terminal of the parallel input shunt circuit or the digital input terminal of the parallel digital input shunt circuit, and the output terminal of the parallel output combining circuit are the corresponding input terminals or digital input terminals and output terminals of the parallel circuit for combining similar inputs and canceling inputs in the main signal branch;

[0015] In the main circuit of the similar input combining and input cancellation power amplifier circuit, the main signal branch similar input combining and input cancellation series circuit is composed of a main signal and branch similar input combining circuit and a main signal and branch similar input cancellation circuit connected in series; wherein the input terminal and output terminal of the main signal and branch similar input canceling circuit, or the input terminal of the branch similar input combining circuit and the output terminal of the branch similar input cancellation circuit, are the corresponding input terminal and output terminal of the main signal branch similar input combining and input cancellation series circuit;

[0016] Among them, in the parallel circuit of similar input combining and input cancellation of the main signal branch, there can only be one main signal delay adjustment circuit with input combining or input cancellation. In addition, in the combined circuit of the main signal and similar input combining of the branch or the combined circuit of the main signal and similar input cancellation of the branch, there can only be one main signal delay adjustment circuit with input combining or input cancellation.

[0017] In the circuit where the main signal and the branch similar inputs are combined or the main signal and the branch similar inputs are canceled, the input branch circuit or the branch main cancellation circuit or the branch main cancellation circuit, and the output circuit of the branch main cancellation circuit are connected in parallel to the input terminals of the two circuits of the main signal delay adjustment circuit with the corresponding input combination or input cancellation circuit, or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits, to form the circuit where the main signal and the branch similar inputs are combined or the main signal and the branch similar inputs are canceled.

[0018] Or, the combined circuit of similar input combining and input cancellation of the combined branch, through the input branch circuit of the main branch or the input branch circuit of the main branch cancellation, or through the digital input branch circuit of the main branch or the output circuit of the main branch cancellation, and the input terminal of the two circuits or the digital input terminal of the two circuits or one analog input terminal and one digital input terminal and the output terminal of the two circuits are connected in parallel to form the combined circuit of similar input combining and input cancellation of the combined branch;

[0019] The branch-similar input combiner circuit is configured to output a distorted signal with input in-phase combiner compensation, and to extend the gain linear dynamic range of the main power signal with a smaller output main power signal to compensate for the main power signal with a smaller input combiner synchronous power point in the Class C main power amplifier circuit output.

[0020] A branch similar input cancellation circuit is configured to output a predistorted signal with input anti-phase similar cancellation, and to have similarity characteristics with the main power signal of the branch similar input combining circuit and the main signal combining circuit of the main power signal, and the C-class main power signal with a gain linear dynamic range extension greater than the input cancellation synchronization power point.

[0021] The characteristics of input combining and input cancellation at the output of the main circuit in the branch similar input combining and input cancellation combining circuits are as follows:

[0022] At the input combining synchronization power point in the main circuit where the branch similar input combining circuit and the main signal are combined, and at the input cancellation synchronization power point in the main circuit where the branch similar input combining circuit and the input cancellation circuit are combined, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delays are equal or nearly equal, and the amplitudes are equal or nearly equal, the phases of the two circuits in the main circuit where the branch similar input combining circuit and the main signal are combined are within the range of 0 degrees to 45 degrees, and the phases of the two circuits in the main circuit where the branch similar input combining circuit and the input cancellation circuit are opposite or adjacent. Conversely, in the parallel circuit of the main signal branch similar input combining and input cancellation or the series circuit of the main signal branch similar input combining and input cancellation that meet the above conditions, the distortion signal with input in-phase combining compensation output by the branch similar input combining circuit and the pre-distortion signal with input out-of-phase similar cancellation output by the branch similar input cancellation circuit generate a combined cancellation composite distortion signal at the output terminal of the parallel circuit of the main signal branch similar input combining and input cancellation or the series circuit of the main signal branch similar input combining and input cancellation.

[0023] In the combined distortion signal of the collapsible cancellation, the distortion signal generated by the branch similar input combiner circuit and compensated by the input in-phase combiner has the characteristic of extending the linear dynamic range of the gain of the main power signal output from the Class C main power amplifier circuit that is smaller than the input combiner synchronization power point to have a smaller output main power signal. At the output of the branch similar input combiner and the main signal combiner circuit of the input cancelling combiner main circuit, the time delay, amplitude, or near-equal amplitude at the input combiner synchronization power point are equal, and the phase of the two circuits is at 0 degrees. Within the 45-degree range, the gain linear dynamic range compensation of the distortion signal with in-phase combining compensation generated by the branch similar input combining circuit and the main power signal of the Class C main power signal output by the Class C main power amplifier circuit that is smaller than the input combining synchronous power point is extended to a smaller output main power signal. And within the gain linear dynamic range of the already extended smaller output main power signal, the EVM value and gain fluctuation are improved, and the linear ACPR value of the Class C main power signal of the main power signal of the branch similar input combining circuit and the main signal combining main circuit is increased to 30-35dBc or more.

[0024] Specifically, when the output of the main circuit combining the branch-similar input combiner and the main signal reaches a linear ACPR value of 30-35 dBc or higher (Class C, with linear dynamic range extension of gain for the main power signal), the pre-distortion signal generated by the branch-similar input cancelling circuit in the combined distortion signal exhibits similarity characteristics to the distortion signal greater than the input cancelling synchronization power point in the Class C main power signal of the main power signal combining the branch-similar input combiner and the main signal (Class C, with linear dynamic range extension of gain for the main power signal). At the output of the main circuit combining the branch-similar input combiner and the input cancelling circuit, when the time delay, amplitude, and phase at the input cancelling synchronization power point are equal or nearly equal, and nearly equal or nearly equal, and nearly opposite, the pre-distortion signal with anti-phase similarity cancellation generated by the branch-similar input cancelling circuit achieves anti-phase similarity cancellation with the distortion signal greater than the input cancelling synchronization power point in the Class C main power signal of the main power signal combining the branch-similar input combiner and the main signal (Class C, with linear dynamic range extension of gain for the main power signal). This technology aims to: 1) improve the linear ACPR value of the main power signal output from the main circuit of the branch-similar input combining and input cancellation main circuit to 40–45 dBc or higher; 2) achieve anti-phase similarity cancellation between the pre-distortion signal with anti-phase similarity cancellation generated by the branch-similar input cancellation circuit and the distortion signal greater than the input cancellation synchronization power point in the main power signal of the main circuit of the branch-similar input combining and main signal main circuit, and achieve further expansion of the gain linear dynamic range of the output main power signal to a smaller output main power signal; 3) improve the EVM value and gain fluctuation within the already expanded smaller output main power signal gain linear dynamic range; and 4) improve the overall efficiency of the power amplifier circuit with similar combining and cancellation.

[0025] Alternatively, by using a combining input shunting circuit or a combining digital input shunting circuit, and a combining output coupling circuit, the analog input terminals or digital input terminals of the two circuits, or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits, can be connected in parallel to form a similar combining and canceling power amplifier circuit with the function of combining main circuit with branch similar input canceling and branch output canceling;

[0026] Among them, in the main circuit of the branch similar input combining cancellation and branch output cancellation, there can only be one main signal delay adjustment circuit with input combining or input cancellation.

[0027] Among them, the branch similar output cancellation circuit generates a distortion signal with output anti-phase similar cancellation at the output end, and has similar characteristics to the distortion signal in the Class C main power signal of the branch similar input combination and input cancellation main circuit whose gain linear dynamic range is extended to the output cancellation synchronous power point.

[0028] The output cancellation characteristic at the output terminal of the main circuit of the combined circuit, where branch similar input cancelling and branch output cancelling are combined, is as follows:

[0029] When the output circuit of the main circuit combining branch similar input cancelling circuit and input cancelling circuit achieves a linear ACPR value of 40-45 dBc or higher for the Class C main power signal with a linear dynamic range extension of the main power signal gain, and when the time delay, amplitude, and phase are equal or nearly equal, or opposite or nearly opposite at the output cancellation synchronization power point in the main circuit combining branch similar input cancelling circuit and branch output cancelling circuit, the distorted signal generated by the branch similar output cancelling circuit with output anti-phase similar cancellation characteristics is combined with the branch similar input cancelling circuit. The gain of the main power signal output by the main circuit of the branch similar input cancelling and the branch output cancelling is similar to the distortion signal in the Class C main power signal with a linear dynamic range extension of the gain of the main power signal output by the main circuit of the branch similar input cancelling and the branch output cancelling. This distortion signal with output inverse synchronous cancellation is achieved at the output of the main circuit of the branch similar input cancelling and the branch output cancelling. This cancels the distortion signal in the Class C main power signal with a linear dynamic range extension of the gain of the main power signal output by the main circuit of the branch similar input cancelling and the branch output cancelling, which is greater than the distortion signal in the output cancelling synchronous power point, thus improving the similar input of the branch. The combined main circuit output of the main power signal, which is further extended by the branch output cancellation, achieves a linear ACPR value of over 50-55 dBc for the Class C main power signal, or achieves the cancellation of the distortion signal with output anti-phase synchronous cancellation generated by the branch similar output cancellation circuit. This cancels the distortion signal in the Class C main power signal with a gain linear dynamic range extension greater than the output cancellation synchronous power point, which is generated by the branch similar output cancellation circuit and cancelled by the branch similar input. The gain linear dynamic range of the main power signal of the circuit extends the reverse compensation characteristics of the Class C main power signal, which has the reverse compensation characteristics. The gain linear dynamic range of the main power signal extends the gain linearity of the Class C output main power signal, further extending it to a smaller output main power range. The gain linear dynamic range of the extended gain improves the EVM value and gain fluctuation, and improves the linear ACPR value of the main power signal output of the combined main circuit of the branch similar input cancelling and branch output cancelling to 50-55dBC or more, and achieves the improvement of the overall efficiency.

[0030] Alternatively, the main power output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar inputs and input cancellation is connected to the main power input terminal of the main circuit feedforward output cancellation circuit, and the distortion output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar inputs and input cancellation is connected to the distortion input terminal of the main circuit feedforward output cancellation circuit, thus forming a similar combining and cancellation power amplifier circuit with the function of main circuit series main circuit combining branch similar inputs and input cancellation;

[0031] In the series circuit of branch similar input combining cancellation and feedforward output cancellation, the input terminal of the main path of the main path feedforward input coupling circuit, the feedforward distortion adjustment power amplifier circuit connected to the output terminal of the feedforward main path delay circuit and the feedforward distortion output combining circuit, and the output terminal of the feedforward cancellation coupling circuit form the main path feedforward combining cancellation circuit from the input terminal of the main path feedforward input coupling circuit to the output terminal of the feedforward cancellation coupling circuit.

[0032] The same type of cancellation characteristic at the output of the branch similar input combining cancellation main circuit and the feedforward output cancellation series circuit is as follows: When the output of the branch similar input combining and input cancellation main circuit reaches a Class C main power linear ACPR of 40-45 dBC or higher, at the output of the branch similar input combining cancellation main circuit and the feedforward output cancellation series circuit, under the conditions that the time delay, amplitude, and phase at the feedforward cancellation synchronization power point are equal or nearly equal, equal or nearly equal, and nearly opposite, the distortion signal in the Class C main power signal with the gain linear dynamic range extended by the main power signal output by the branch similar input combining and input cancellation main circuit is extracted by the distortion output of the feedforward distortion extraction circuit of the branch similar input combining and input cancellation main circuit. The distortion signal in the extended Class C main power signal is of the same type. At the output of the main path feedforward combining cancellation circuit, when the time delay, amplitude, and phase at the feedforward cancellation synchronization power point are equal or nearly equal, the linear dynamic range of the gain of the main power signal output by the branch similar input combining circuit and the input cancellation circuit of the main path circuit are equal or nearly equal, the distortion signal of the same type in the extended Class C main power signal is canceled, and the linear dynamic range of the gain of the main power signal is further extended to the Class C output main power signal, reaching the linear dynamic range of the gain of the Class AB output main power. Within the extended linear dynamic range of the gain, the EVM value and gain fluctuation are improved, and the Class C bus linear dynamic range of the Class AB main power signal output by the circuit of the branch similar input combining cancellation main path and the feedforward output cancellation series circuit is improved, reaching the linear ACPR value of the Class AB output power signal to above 50-55dBC, and the overall efficiency is improved.

[0033] In an exemplary embodiment, the output terminal of the parallel circuit of the main signal branch similar input combining and input cancellation or the series circuit of the main signal branch similar input combining and input cancellation is connected to the main power amplifier circuit to form a similar combining and canceling power amplifier circuit with the function of a main circuit combining branch similar input combining and input cancellation. The output terminal of the circuit combining the main signal and the branch similar input combining in the parallel circuit of the main signal branch similar input combining and input cancellation or the series circuit of the main signal branch similar input combining and input cancellation is connected to the input terminal of the main power amplifier circuit to form a main circuit combining branch similar input combining and main signal.

[0034] Among them, the branch similar input combiner circuit is used to output a distorted signal with input in-phase combiner compensation, and has the characteristic of extending the gain linear dynamic range of the main power signal in the Class C main power signal output by the compensated Class C main power amplifier circuit that is smaller than the input combiner synchronous power point to have a smaller output main power signal.

[0035] Among them, the branch similar input cancellation circuit is used to output a predistorted signal with input anti-phase similar cancellation, and has characteristics similar to the distortion signal in the Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input combining circuit and the main signal combining main circuit, which is greater than the input cancellation synchronous power point.

[0036] The input combining and input cancellation characteristics at the output of the main circuit of the branch similar input combining and input cancellation are as follows: at the input combining synchronization power point in the main circuit of the branch similar input combining and input cancellation, and at the input cancellation synchronization power point in the main circuit of the branch similar input combining and input cancellation, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delay is equal or nearly equal, the amplitude is equal or nearly equal, the phase of the two circuits in the main circuit of the branch similar input combining and input cancellation is within the range of 0 degrees to 45 degrees, and the phase of the two circuits in the main circuit of the branch similar input combining and input cancellation is within the range of 0 degrees to 45 degrees. When the phases of the main circuits of the input cancellation are opposite or nearly opposite, in the parallel circuit of the main signal branch similar input cancellation and input cancellation or the series circuit of the main signal branch similar input cancellation and input cancellation that meet the above conditions, the distortion signal with input in-phase combination compensation output by the branch similar input cancellation circuit and the pre-distortion signal with input out-of-phase similar cancellation output by the branch similar input cancellation circuit generate a combined cancellation distortion signal at the output of the parallel circuit of the main signal branch similar input cancellation and input cancellation or the series circuit of the main signal branch similar input cancellation and input cancellation.

[0037] In the combined distortion signal of the collapsible cancellation, the distortion signal generated by the branch similar input combiner circuit and compensated by the input in-phase combiner has the characteristic of expanding the linear dynamic range of the gain of the main power signal output from the Class C main power amplifier circuit that is smaller than the input combiner synchronization power point to a smaller output main power signal. At the output of the branch similar input combiner and the main signal combiner circuit of the input cancelling combiner main circuit, the time delay, amplitude, or near-equal amplitude at the input combiner synchronization power point are equal, and the phase of the two circuits is between 0 degrees and... Within a 45-degree range, the gain linear dynamic range compensation of the distortion signal with in-phase combining compensation generated by the branch similar input combining circuit and the Class C main power signal output by the Class C main power amplifier circuit is extended to a smaller output main power signal with a gain linear dynamic range smaller than the input combining synchronous power point. Within the gain linear dynamic range of the already extended smaller output main power signal, the EVM value and gain fluctuation are improved, and the linear ACPR value of the Class C main power signal with the extended gain linear dynamic range of the branch similar input combining circuit and the main signal combining main circuit is increased to above 30-35dBc.

[0038] Specifically, when the output of the main circuit combining the branch-similar input combiner and the main signal reaches a linear ACPR value of 30-35 dBc or higher (Class C, with linear dynamic range extension of gain for the main power signal), the pre-distortion signal generated by the branch-similar input cancelling circuit in the combined distortion signal exhibits similarity characteristics to the distortion signal greater than the input cancelling synchronization power point in the Class C main power signal of the main power signal combining the branch-similar input combiner and the main signal (Class C, with linear dynamic range extension of gain for the main power signal). At the output of the main circuit combining the branch-similar input combiner and the input cancelling circuit, when the time delay, amplitude, and phase at the input cancelling synchronization power point are equal or nearly equal, and nearly equal or nearly equal, and nearly opposite, the pre-distortion signal with anti-phase similarity cancellation generated by the branch-similar input cancelling circuit achieves anti-phase similarity cancellation with the distortion signal greater than the input cancelling synchronization power point in the Class C main power signal of the main power signal combining the branch-similar input combiner and the main signal (Class C, with linear dynamic range extension of gain for the main power signal). This technology aims to: 1) improve the linear ACPR value of the main power signal output from the main circuit of the branch-similar input combining and input cancellation main circuit to 40–45 dBc or higher; 2) achieve anti-phase similarity cancellation between the pre-distortion signal with anti-phase similarity cancellation generated by the branch-similar input cancellation circuit and the distortion signal greater than the input cancellation synchronization power point in the main power signal of the main circuit of the branch-similar input combining and main signal main circuit, and achieve further expansion of the gain linear dynamic range of the output main power signal to a smaller output main power signal; 3) improve the EVM value and gain fluctuation within the already expanded smaller output main power signal gain linear dynamic range, thereby improving the linear ACPR value of the main power signal of the main circuit of the branch-similar input combining and input cancellation main circuit to 40–45 dBc or higher; and 4) improve the overall efficiency of the power amplifier circuit with similar combining and cancellation.

[0039] In an exemplary embodiment, the main power amplifier circuit in the branch similar input combiner and input cancellation combiner main circuit is a Class C power amplifier circuit, which is composed of a single Class C power amplifier circuit or at least one Class C multi-channel power amplifier circuit combined through a combiner or through an impedance transformation network.

[0040] In an exemplary embodiment, in the main circuit of the branch similar input combiner and input cancellation, the parallel circuit of the main signal branch similar input combiner and input cancellation is connected via a parallel input shunting circuit or a parallel digital input shunting circuit, and a parallel output combiner circuit, through a combined circuit of the main signal and the branch similar input combiner in parallel, which is a combination circuit of the distortion extraction, adjustment and amplification circuit of the analog distortion of the main signal and the branch similar input combiner, or an analog digital distortion circuit of the branch similar input combiner, or a branch similar input combiner... The digital distortion circuit of the input-output shunt circuit is composed of the analog input terminal of the two circuits of the branch similar input cancellation circuit, or one analog input terminal and one digital input terminal of the two circuits, or the digital input terminal and the output terminal of the two circuits; or it is composed of the analog pre-distortion distortion extraction, adjustment and amplification combined circuit of the main signal and the branch similar input cancellation circuit, or the branch similar input cancellation circuit, through the parallel connection of the input shunt circuit or the parallel connection of the digital input shunt circuit and the output combining circuit. The circuit consists of a combined circuit for distortion extraction, adjustment, and amplification of the auxiliary circuit of the branch similar input cancelling circuit and the main signal cancelling circuit, or an analog-digital pre-distortion circuit for branch similar input cancelling, or a digital pre-distortion circuit for branch similar input cancelling, and the analog input terminal of the two circuits of the branch similar input cancelling circuit, or one analog input terminal and one digital input terminal of the two circuits, or the digital input terminal and the output terminal of the two circuits; or it is composed of the input terminal of the branch similar input cancelling circuit and the input cancelling combined circuit, or one analog input terminal and one digital input terminal of the two circuits, and the output terminal of the two circuits of the corresponding input cancelling or input cancelling main signal delay adjustment circuit; wherein, the input terminal of the input cancelling circuit or the digital input cancelling circuit, and the output terminal of the output cancelling circuit are the corresponding input terminal or digital input terminal and output terminal of the parallel circuit of the main signal branch similar input cancelling circuit;

[0041] Among them, in the parallel circuit of similar input combining and input cancellation of the main signal branch, there can only be one main signal delay adjustment circuit with input combining or input cancellation. In addition, in the combined circuit of the main signal and similar input combining of the branch or the combined circuit of the main signal and similar input cancellation of the branch, there can only be one main signal delay adjustment circuit with input combining or input cancellation.

[0042] The cancellation characteristics of the synthesized distorted signal in the main signal branch similar input combining and input cancellation parallel circuit of the main circuit combining branch similar input combining and input cancellation are as follows: at the input combining synchronization power point in the main circuit combining branch similar input combining and input cancellation, and at the input cancellation synchronization power point in the main circuit combining branch similar input combining and input cancellation, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delay is equal or nearly equal, and the amplitude is equal or nearly equal, at the main circuit combining branch similar input combining and main signal... When the phases of the two circuits in the circuit are within the range of 0 to 45 degrees, and the phases of the main circuit in the similar input combining circuit of the branch and the input cancellation circuit are opposite or nearly opposite, in the parallel circuit of the similar input combining circuit of the main signal branch and the input cancellation circuit that meets the above conditions, the distortion signal with input in-phase combining compensation output by the similar input combining circuit of the branch and the pre-distortion signal with input out-of-phase similar cancellation output by the similar input cancellation circuit of the branch and the output of the similar input cancellation circuit of the branch and the input cancellation circuit generate a combined cancellation composite distortion signal at the output of the parallel circuit of the similar input combining circuit of the main signal branch and the input cancellation circuit.

[0043] Among them, in the combined distortion signal of the combined circuit cancellation, the distortion signal of the input in-phase combined circuit compensation generated by the branch similar input combined circuit has the characteristic of extending the linear dynamic range of the gain of the main power signal of the Class C main power signal output in the compensated Class C main power amplifier circuit that is smaller than the synchronous power point of the input combined circuit to the output main power signal with a smaller output main power signal.

[0044] Among them, in the combined distortion signal of the collapsible cancellation, the pre-distortion signal generated by the branch similar input cancellation circuit has the same characteristics as the distortion signal of Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input collapsible and main signal collapsible main circuit, which is greater than the input cancellation synchronization power point.

[0045] In an exemplary embodiment, in the main circuit of the branch similar input combining and input cancellation, the series circuit of the main signal branch similar input combining and input cancellation is composed of a main signal and branch similar input combining circuit and a main signal and branch similar input cancellation circuit connected in series; wherein the input terminal and the output terminal of the main signal and branch similar input cancellation circuit, or the input terminal of the branch similar input combining circuit and the output terminal of the branch similar input cancellation circuit, are the corresponding input terminal and output terminal of the series circuit of the main signal branch similar input combining and input cancellation.

[0046] The circuit for combining the main signal and the similar input of the branch includes: a circuit for combining the analog distortion extraction, adjustment and amplification circuit of the main signal and the similar input of the branch, a circuit for analog digital distortion of the similar input of the branch, and a circuit for digital distortion of the similar input of the branch.

[0047] The combined circuit for canceling the main signal and the similar input of the branch includes: a combined circuit of the distortion extraction, adjustment and amplification circuit of the analog predistortion canceling the main signal and the similar input of the branch, an analog digital predistortion circuit of the similar input of the branch, a digital predistortion circuit of the similar input of the branch, and a combined circuit of the distortion extraction, adjustment and amplification circuit of the auxiliary circuit of the similar input of the branch and the similar input of the main signal canceling the similar input of the branch and the similar input of the branch and the similar input of the main signal;

[0048] Among them, in the combined circuit of the main signal and the similar input of the branch or the combined circuit of the main signal and the similar input of the branch canceling, there can only be one main signal delay adjustment circuit with input combining or input canceling.

[0049] The characteristics of the combined distortion signal synthesized by the main signal in the main circuit of the branch similar input combining and input cancellation series circuit are as follows: at the input combining synchronization power point in the main circuit of the branch similar input combining and input cancellation, and at the input cancellation synchronization power point in the main circuit of the branch similar input combining and input cancellation, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delay is equal or nearly equal, and the amplitude is equal or nearly equal, at the main circuit of the branch similar input combining and main signal... When the phases of the two circuits in the path are within the range of 0 to 45 degrees, and the phases of the main circuit in the similar input combining circuit of the branch and the input cancellation circuit are opposite or nearly opposite, in the series circuit of the similar input combining circuit of the main signal branch and the input cancellation circuit that meets the above conditions, the distortion signal with input in-phase combining compensation output by the similar input combining circuit of the branch and the pre-distortion signal with input out-of-phase similar cancellation output by the similar input cancellation circuit of the branch will generate a combined cancellation composite distortion signal at the output of the series circuit of the similar input combining circuit of the main signal branch and the input cancellation circuit.

[0050] Among them, in the combined distortion signal of the combined circuit cancellation, the distortion signal of the input in-phase combined circuit compensation generated by the branch similar input combined circuit has the characteristic of extending the linear dynamic range of the gain of the main power signal of the Class C main power signal output in the compensated Class C main power amplifier circuit that is smaller than the synchronous power point of the input combined circuit to the output main power signal with a smaller output main power signal.

[0051] Among them, in the combined distortion signal of the collapsible cancellation, the pre-distortion signal generated by the branch similar input cancellation circuit has the characteristic of being similar to the distortion signal of the main power signal of Class C main power signal with a gain linear dynamic range extension of the main power signal of the combined main circuit of the branch similar input cancellation circuit and the main signal, which is greater than the input cancellation synchronization power point.

[0052] In an exemplary embodiment, the main signal and the branch similar input combiner circuit are connected in parallel to the branch similar input combiner circuit via the branch main combiner input shunting circuit or the branch main combiner digital input shunting circuit and the branch main combiner output combiner circuit. The circuit is connected to the branch similar input combiner circuit via the analog distortion extraction, adjustment and amplification circuit, or the branch similar input combiner analog digital distortion extraction, adjustment and amplification circuit, or the branch similar input combiner digital distortion extraction, adjustment and amplification circuit. The circuit is connected to the input terminal of the corresponding input combiner main signal delay adjustment circuit or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits to form the main signal and the branch similar input combiner circuit.

[0053] Since the analog-digital distortion circuit of the branch similar input combiner or the digital distortion circuit of the branch similar input combiner contains the main signal and the distortion signal, the analog-digital pre-distortion circuit of the branch similar input combiner or the digital distortion circuit of the branch similar input combiner directly forms the combiner circuit of the main signal and the branch similar input combiner.

[0054] The branch similar input combiner circuit includes: a distortion extraction, adjustment, and amplification circuit for analog distortion of the branch similar input combiner; a distortion extraction, adjustment, and amplification circuit for analog digital distortion of the branch similar input combiner; and a distortion extraction, adjustment, and amplification circuit for digital distortion of the branch similar input combiner.

[0055] Furthermore, in the combined circuit of the main signal and the similar input of the branch, there can only be one main signal delay adjustment circuit for the input combined circuit.

[0056] In an exemplary embodiment, the main signal and branch similar input cancellation combined circuit, through the branch main cancellation input branch circuit or through the branch main cancellation digital input branch circuit, and the branch main cancellation output combined circuit, is connected in parallel to the branch similar input cancellation circuit's branch similar input cancellation analog pre-distortion distortion extraction adjustment amplifier circuit, or branch similar input cancellation analog digital pre-distortion distortion extraction adjustment amplifier circuit, or branch similar input cancellation digital pre-distortion distortion extraction adjustment amplifier circuit, or branch similar input cancellation branch similar input cancellation branch similar input cancellation auxiliary circuit's branch similar input cancellation auxiliary circuit, and the corresponding input cancellation main signal delay adjustment circuit's two circuit input terminals or one analog input terminal and one digital input terminal and the two circuit output terminals, to form the main signal and branch similar input cancellation combined circuit ...

[0057] The branch similar input cancellation circuit includes: a distortion extraction, adjustment, and amplification circuit for analog predistortion of branch similar input cancellation; a distortion extraction, adjustment, and amplification circuit for analog digital predistortion of branch similar input cancellation; a distortion extraction, adjustment, and amplification circuit for digital predistortion of branch similar input cancellation; and a distortion extraction, adjustment, and amplification circuit for the auxiliary circuit of the branch similar input combiner and the main signal combiner of branch similar input cancellation.

[0058] Furthermore, in the combined circuit where the main signal and the branch similar inputs cancel each other out, there can only be one main signal delay adjustment circuit with input cancellation.

[0059] In an exemplary embodiment, the combined circuit of similar input combining and input cancellation of the branch is formed by connecting the input terminals of the branch main combining or branch main cancellation circuit, or the digital input terminal of the two circuits, or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits in parallel.

[0060] The branch similar input combiner circuit includes: a distortion extraction, adjustment, and amplification circuit for analog distortion of the branch similar input combiner; a distortion extraction, adjustment, and amplification circuit for analog digital distortion of the branch similar input combiner; and a distortion extraction, adjustment, and amplification circuit for digital distortion of the branch similar input combiner.

[0061] The branch similar input cancellation circuit includes: a distortion extraction, adjustment, and amplification circuit for analog predistortion of branch similar input cancellation; a distortion extraction, adjustment, and amplification circuit for analog digital predistortion of branch similar input cancellation; a distortion extraction, adjustment, and amplification circuit for digital predistortion of branch similar input cancellation; and a distortion extraction, adjustment, and amplification circuit for the auxiliary circuit of the branch similar input combiner and the main signal combiner of branch similar input cancellation.

[0062] In an exemplary embodiment, the circuit features of the branch-similar input combiner circuit are as follows: A signal extraction circuit for analog distortion of the branch-similar input combiner is formed by connecting the input terminal of the main path of the coupled output load circuit of the input combiner or the input terminal of the amplitude modulation attenuation circuit of the input combiner to the output terminal of the analog distortion circuit of the branch-similar input combiner, or a signal extraction circuit for analog digital distortion of the branch-similar input combiner, or a signal extraction circuit for digital distortion of the branch-similar input combiner, through the main signal adjustment power amplifier circuit of the input combiner, through the input shunting circuit of the input combiner or through the digital input shunting circuit of the input combiner, and through the distortion output combiner circuit of the input combiner, and then connected in parallel to the analog input terminals of the corresponding two circuits or one digital input terminal and one analog output terminal of one of the two circuits. The output terminals of the input and two-way circuits, the output terminals of the analog distortion extraction circuit of the branch-similar input combiner, the analog digital distortion extraction circuit of the branch-similar input combiner, or the digital distortion extraction circuit of the branch-similar input combiner, are connected to the input terminals of the distortion adjustment power amplifier circuit of the input combiner. This forms a branch-similar input combiner circuit with the functions of analog distortion extraction adjustment amplifier circuit of the branch-similar input combiner, analog digital distortion extraction adjustment amplifier circuit of the branch-similar input combiner, or digital distortion extraction adjustment amplifier circuit of the branch-similar input combiner. Furthermore, by generating a distortion signal with input in-phase combiner compensation, it has the characteristic of extending the linear dynamic range of the gain of the main power signal with a smaller output main power signal in the Class C main power signal output by the Class C main power amplifier circuit to a smaller output main power signal.

[0063] The input terminals of the input branch circuit or the digital input branch circuit in the similar input combining circuit, and the output terminal of the distortion adjustment power amplifier circuit in the similar input combining circuit, correspond to the input and output terminals of the distortion extraction adjustment amplifier circuit for analog distortion of the similar input combining circuit, or the input and output terminals of the distortion extraction adjustment amplifier circuit for analog and digital distortion of the similar input combining circuit, or the input and output terminals of the distortion extraction adjustment amplifier circuit for digital distortion of the similar input combining circuit.

[0064] Among them, the analog distortion circuit of the branch similar input combiner is formed by the branch power amplifier circuit of the low power input combiner or the branch feedforward power amplifier circuit of the input combiner. The analog distortion circuit of the branch similar input combiner generates a distortion signal with input in-phase combiner compensation, and has the characteristic of extending the linear dynamic range of the gain of the main power signal with a smaller output main power signal in the Class C main power signal output by the compensated Class C main power amplifier circuit to the main power signal with a smaller output main power signal.

[0065] The analog-digital distortion circuit or digital predistortion circuit of the branch similar input combiner generates an input in-phase combiner to compensate for distortion. It has the characteristic of extending the linear dynamic range of the gain of the main power signal with a gain less than the synchronous power point of the input combiner to a smaller output power signal, which compensates for the main power signal output by the Class C main power amplifier circuit. The output of the digital-to-analog converter circuit of the input combiner is connected to the input of a low-power input combiner analog power amplifier circuit. The feedback input of the analog-digital distortion circuit or digital predistortion circuit of the branch similar input combiner is connected to the feedback output of the input combiner coupling feedback adjustment circuit installed at the output of the main power amplifier circuit. This forms a corresponding main signal and branch similar input combiner combined circuit with the functions of the analog-digital distortion circuit or digital predistortion circuit of the branch similar input combiner.

[0066] In an exemplary embodiment, the circuit feature of the branch similar input cancellation circuit is as follows: The input terminal of the main path of the input cancellation coupling output load circuit or the input terminal of the input cancellation amplitude modulation attenuation circuit is connected to the output terminal of the branch similar input cancellation analog predistortion circuit, or the output terminal of the branch similar input cancellation analog digital predistortion circuit, or the output terminal of the branch similar input cancellation digital predistortion circuit, or the output terminal of the auxiliary circuit of the branch similar input cancellation branch similar input combiner and main signal combiner, thereby forming a branch similar input cancellation analog predistortion signal boost. The signal extraction circuit, or the signal extraction circuit that forms a branch-like input cancellation analog-digital predistortion circuit, or the signal extraction circuit that forms a branch-like input cancellation digital predistortion circuit, or the signal extraction circuit that forms a branch-like input cancellation branch-like input combiner and the auxiliary circuit that combines the main signal, and the main signal adjustment power amplifier circuit with input cancellation, through the input cancellation input splitter circuit or through the input cancellation digital input splitter circuit, and the input cancellation distortion output combiner circuit, are connected in parallel to the analog input terminals of the corresponding two circuits, or one digital input terminal and one analog input terminal of the two circuits and the two circuits. The output terminal, which is the output terminal of the analog predistortion distortion extraction circuit with branch-like input cancellation, or the output terminal of the analog digital predistortion distortion extraction circuit with branch-like input cancellation, or the output terminal of the digital predistortion distortion extraction circuit with branch-like input cancellation, or the output terminal of the distortion extraction circuit of the auxiliary circuit of the branch-like input combining circuit and the main signal combining circuit with branch-like input cancellation, is connected to the input terminal of the distortion adjustment power amplifier circuit with input cancellation, thus forming a distortion extraction and adjustment amplifier circuit with the function of analog predistortion distortion with branch-like input cancellation, or forming a distortion extraction and adjustment amplifier circuit with branch-like input cancellation. The circuit has the functions of analog digital predistortion distortion extraction and adjustment amplifier circuit, or digital predistortion distortion extraction and adjustment amplifier circuit that forms branch similar input cancellation, or branch similar input cancellation branch similar input combiner and main signal combiner auxiliary circuit distortion extraction and adjustment amplifier circuit. Furthermore, the predistortion signal generated by input inverse similar cancellation has similar characteristics to the distortion signal in Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input combiner and main signal combiner main circuit, which is greater than the input cancellation synchronous power point.

[0067] The input terminals of the input cancellation input branch circuit or the input cancellation digital input branch circuit in the branch similar input cancellation circuit, and the output terminal of the input cancellation distortion adjustment power amplifier circuit, respectively correspond to the input terminal and output terminal of the branch similar input cancellation analog pre-distortion distortion extraction adjustment amplifier circuit, or the input terminal and output terminal of the branch similar input cancellation analog digital pre-distortion distortion extraction adjustment amplifier circuit, or the input terminal and output terminal of the branch similar input cancellation digital pre-distortion distortion extraction adjustment amplifier circuit, or the input terminal and output terminal of the branch similar input cancellation branch similar input combiner and main signal combiner auxiliary circuit distortion extraction adjustment amplifier circuit;

[0068] Among them, the analog predistortion circuit of branch similar input cancellation is formed by a branch power amplifier circuit with low power input cancellation or a branch feedforward power amplifier circuit with input cancellation. The circuit generates a predistortion signal with input inverse similar cancellation and has characteristics similar to the distortion signal in Class C main power signal with a gain linear dynamic range extension of the main power signal of the main circuit of the branch similar input combination and the main signal combination main circuit with the main signal, which is greater than the input cancellation synchronous power point.

[0069] Specifically, by replacing the main power amplifier circuit in the main circuit of the branch similar input combiner and the main signal combiner with a similar low-power Class C input first auxiliary power amplifier circuit, a branch similar input cancelling branch similar input combiner and the main signal combiner auxiliary circuit generates a pre-distortion signal with input anti-phase similar cancellation, and has the same characteristics as the distortion signal of Class C main power signal with a gain linear dynamic range extension greater than the input cancellation synchronization power point as the main power signal output by the branch similar input combiner and the main signal combiner main circuit;

[0070] The circuit consists of an analog-digital predistortion circuit or a digital predistortion circuit with branch-similar input cancellation that generates an input-inverting similarity cancellation predistortion signal. This signal has similarity characteristics to the main power signal of the main circuit with the combined main signal of the branch-similar input cancellation circuit and the main signal, and the gain of the main power signal is extended to a linear dynamic range of Class C. The output of the input cancellation digital-to-analog converter is connected to the input of a low-power input cancellation analog power amplifier circuit. The feedback input of the analog-digital predistortion circuit or the digital predistortion circuit with branch-similar input cancellation is connected to the feedback output of the input cancellation coupling feedback adjustment circuit installed at the output of the main power amplifier circuit. This forms a combined circuit of the main signal and the branch-similar input cancellation corresponding to the function of the analog-digital predistortion circuit or the digital predistortion circuit with branch-similar input cancellation.

[0071] The input terminal of the input cancellation main signal adjustment power amplifier circuit in the branch similar input cancellation circuit is connected to the input terminal of the input cancellation input branch circuit and another output terminal, or it is installed in the input cancellation main signal delay adjustment circuit.

[0072] In an exemplary embodiment, the input combining or input cancelling main signal delay adjustment circuit is composed of a delay circuit for input combining or input cancelling connected in series with an adjustable attenuation circuit for input combining or input cancelling or an amplitude modulation circuit for input combining or input cancelling; and satisfies the main power signal requirements in the main circuit of the similar input combining and input cancelling branch circuits without generating new distortion signals.

[0073] In an exemplary embodiment, a power amplifier circuit with similar combining and canceling functions is formed by connecting the analog input terminals or digital input terminals of two circuits—a main circuit for combining similar inputs and canceling inputs, and a main circuit for combining similar inputs and canceling inputs—in parallel via a combining input splitter circuit or a combining digital input splitter circuit and a combining output coupling circuit, or by connecting one analog input terminal and one digital input terminal and the output terminal of the two circuits.

[0074] Among them, the branch similar output cancellation circuit outputs a distortion signal with output inverse similar cancellation, and has similar characteristics to the C-class main power signal of the main power signal of the branch similar input combining circuit and the main circuit of the input cancellation combining circuit, which has a linear dynamic range extension of gain and is greater than the distortion signal of the output cancellation synchronous power point.

[0075] Among them, the branch similar output cancellation circuit includes a distortion extraction, adjustment and amplification circuit for analog distortion cancellation of branch similar output, or a distortion extraction, adjustment and amplification circuit for analog digital distortion cancellation of branch similar output, or a distortion extraction, adjustment and amplification circuit for digital distortion cancellation of branch similar output, or a distortion extraction, adjustment and amplification circuit for auxiliary circuit of branch similar input combining circuit and input cancellation.

[0076] The output cancellation characteristics at the output of the main circuit combining branch-similar input cancelling and branch-output cancelling are as follows: when the linear ACPR value of the Class C main power signal, which represents the linear dynamic range extension of the main power signal gain, reaches 40-45 dBc or higher at the output of the main circuit combining branch-similar input cancelling and input cancelling, the time delays at the output cancellation synchronization power points in the main circuit combining branch-similar input cancelling and branch-output cancelling are equal or nearly equal, equal or nearly equal, or opposite or nearly opposite in phase. The distorted signal generated by the branch similarity output cancellation circuit has output anti-phase similarity cancellation characteristics. This signal, through a gain linear dynamic range extension of the Class C main power signal output by the main circuit of the branch similarity input combining and input cancellation, is similar to the distorted signal greater than the output cancellation synchronization power point in the main power signal output by the main circuit of the branch similarity input combining and input cancellation. At the output of the main circuit of the branch similarity input combining and branch output cancellation, the distorted signal generated by the branch similarity output cancellation circuit with output anti-phase synchronization cancellation is realized, and this is similar to the distorted signal generated by the branch similarity output cancellation circuit with the distorted signal output anti-phase synchronization cancellation of the main circuit of the main circuit of the branch similarity input combining and input cancellation. The linear dynamic range of the gain of the main power signal output by the circuit extends to cancel the distortion signal greater than the output cancellation synchronization power point in the Class C main power signal. This improves the linear ACPR value of the main power signal output by the combined main circuit of the branch similar input cancelling and branch output cancelling to above 50-55 dBc. Alternatively, it achieves the cancellation of the distortion signal with output anti-phase synchronization cancellation generated by the branch similar output cancelling circuit, which cancels the distortion signal greater than the output cancellation synchronization power point in the Class C main power signal output by the combined main circuit of the branch similar input cancelling and input cancelling. It also has the reverse compensation characteristic of the Class C main power signal with the linear dynamic range of the gain of the main power signal generated by the branch similar output cancelling circuit and the combined main circuit of the branch similar input cancelling and input cancelling. This extends the linear dynamic range of the gain of the main power signal to further extend the linear gain of the Class C output main power signal to a smaller output main power range, improving the EVM value and gain fluctuation within the further extended linear dynamic range of the gain.

[0077] In an exemplary embodiment, in the main circuit of the branch-similar input combining and branch-output combining circuit, the branch-similar output combining circuit is characterized by: connecting the input terminal of the main path of the output-combining output load circuit or the output terminal of the output-combining amplitude modulation attenuation circuit to the output terminal of the branch-similar output combining analog distortion circuit, or the output terminal of the branch-similar output combining analog digital distortion circuit, or the output terminal of the branch-similar output combining digital distortion circuit, or the output terminal of the branch-similar input combining and input-combining auxiliary circuit of the branch-similar output combining circuit. The input circuit includes an analog distortion signal extraction circuit that forms branch-like output cancellation, or an analog-digital distortion signal extraction circuit that forms branch-like output cancellation, or a digital distortion signal extraction circuit that forms branch-like output cancellation, or a signal extraction circuit for a branch-like input combiner and an input cancellation auxiliary circuit, and an output cancellation main signal adjustment power amplifier circuit; through an output cancellation input splitter circuit or an output cancellation digital input splitter circuit, and an output cancellation distortion output combiner circuit, the analog input terminals of two of the circuits or one of the digital input terminals of the two circuits are connected in parallel to a... The analog input terminal and the output terminal of the two circuits form the output terminal of the distortion extraction circuit for analog distortion cancellation of branch-like output, or the output terminal of the distortion extraction circuit for analog digital distortion cancellation of branch-like output, or the output terminal of the distortion extraction circuit for digital distortion cancellation of branch-like output, or the output terminal of the distortion extraction circuit for the auxiliary circuit of the branch-like input combiner and input cancellation combiner; connected to the input terminal of the output cancellation distortion adjustment power amplifier circuit, forming a distortion extraction and adjustment amplifier circuit with the function of analog distortion cancellation of branch-like output, or branch-like... The circuit has the functions of a distortion extraction and adjustment amplifier circuit for analog digital distortion with output cancellation, or a distortion extraction and adjustment amplifier circuit for digital distortion with branch similar output cancellation, or a distortion extraction and adjustment amplifier circuit for branch similar output cancellation and input cancellation auxiliary circuit. Furthermore, the output generates a distortion signal with output inverse similar cancellation, and has similar characteristics to the distortion signal in Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input cancellation and input cancellation main circuit, which is greater than the output cancellation synchronous power point.

[0078] The branch similar output cancellation circuit N and the main circuit of the branch similar input cancellation and branch output cancellation are connected to the main circuit of the branch similar input cancellation and branch output cancellation through the branch input branch circuit N or the branch digital input branch circuit N, the branch output coupling circuit N, the analog input terminal of the two circuits or the digital input terminal of the two circuits or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits in parallel, forming the main circuit of the branch similar input cancellation and branch output cancellation N-1. The branch similar output cancellation circuit N connected to the output terminal of the branch similar output cancellation circuit N is installed after the output terminal of the branch similar input cancellation circuit N-1 connected to the output terminal of the branch similar input cancellation circuit. The generated inverse similar cancellation distortion signal is similar to the distortion signal in the Class C main power signal with linear dynamic range extension of the main power signal gain of the branch similar input cancellation and branch output cancellation N-1, which is greater than the output cancellation synchronization power point. When the branch similar output cancellation circuit is N, the same applies, where N is a natural number greater than 1.

[0079] Among them, the input terminal of the output cancellation input branch circuit N or the output cancellation digital input branch circuit N and the output terminal of the output cancellation distortion adjustment power amplifier circuit correspond to the input terminal and output terminal of the branch similar input combining cancellation and branch output cancellation N-1 combining main circuit.

[0080] Among them, the analog distortion circuit with branch similar output cancellation is formed by a low-power output cancellation branch power amplifier circuit or an output power branch feedforward power amplifier circuit. It generates a distortion signal with output inverse similar cancellation, and has similar characteristics to the distortion signal in Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input combining circuit and the input cancellation combining circuit main circuit, which is greater than the output cancellation synchronous power point.

[0081] Specifically, by replacing the main power amplifier circuit in the main circuit of the branch similar input combining and input cancellation combining circuit with a similar low-power Class C output first auxiliary power amplifier circuit, an auxiliary circuit of the branch similar output cancellation combining and input cancellation combining circuit is formed, generating a distortion signal with output anti-phase similar cancellation, and having similar characteristics to the distortion signal in the Class C main power signal with a linear dynamic range extension of gain of the main power signal of the branch similar input combining and input cancellation combining main circuit with a distortion signal greater than the output cancellation synchronization power point;

[0082] Alternatively, by replacing the main power amplifier circuit in the main circuit of the combined circuit with branch similar input cancelling and branch output cancelling N-1, a similar low-power Class C output Nth auxiliary power amplifier circuit is formed, forming a combined auxiliary circuit with branch similar output cancelling and branch output cancelling N-1. This generates a distorted signal with output anti-phase similar cancellation, and has similar characteristics to the Class C main power signal with a gain linear dynamic range extension of the main power signal of the combined main circuit with branch similar input cancelling and branch output cancelling N-1, where N is a natural number greater than 1.

[0083] The analog-digital distortion circuit or digital distortion circuit with branch-similar output cancellation generates a distortion signal with output inverse similarity cancellation. This distortion signal has similar characteristics to the distortion signal in Class C main power signal with a linear dynamic range extension of the gain of the main power signal of the main circuit of the branch-similar input combination and the input cancellation main circuit. The output of the output cancellation digital-to-analog converter is connected to the input of a low-power output cancellation analog power amplifier circuit. The feedback input of the analog-digital distortion circuit or digital distortion circuit with branch-similar output cancellation is connected to the feedback output of the output cancellation coupling feedback adjustment circuit installed at the output of the main circuit of the branch-similar input combination cancellation and the branch-output cancellation. This forms the analog-digital distortion circuit or digital distortion circuit with branch-similar output cancellation.

[0084] Among them, the branch similar output cancellation circuit in the main circuit of the branch similar input cancelling and branch output cancelling, wherein the input terminal of the main signal adjustment power amplifier circuit for output cancellation is connected to the input terminal and another output terminal of the output cancellation input branch circuit, or is installed in the input combining circuit or the main signal delay adjustment circuit for input cancellation in the main circuit of the branch similar input cancelling and branch output cancelling.

[0085] In an exemplary embodiment, the main power output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar input combining circuit and input cancellation circuit is connected to the main power input terminal of the main circuit feedforward output cancellation circuit, and the distortion output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar input combining circuit and input cancellation circuit is connected to the distortion input terminal of the main circuit feedforward output cancellation circuit, thus forming a similar combining and cancellation power amplifier circuit with the function of a main circuit combining branch similar input combining circuit cancellation circuit and feedforward output cancellation circuit in series.

[0086] In a circuit where the branch-similar input combining and canceling main circuit and the feedforward output canceling circuit are connected in series, the feedforward distortion extraction circuit of the branch-similar input combining and input canceling main circuit is characterized by: connecting the output of the branch-similar input combining and input canceling main circuit to the input of the main path of the main circuit feedforward input coupling circuit to form a feedforward signal extraction circuit of the branch-similar input combining and input canceling main circuit; connecting the feedforward main circuit main signal adjustment power amplifier circuit, through a feedforward input shunting circuit or a feedforward digital input shunting circuit, and a feedforward distortion output combining circuit; and connecting in parallel to the analog input of the two circuits or one digital input of the two circuits and one... The analog input terminal of the branch circuit and the output terminal of the two circuits form a feedforward distortion extraction circuit for the main circuit of the combined circuit of similar inputs of the branches and input cancellation. The coupling output terminal of the main circuit feedforward input coupling circuit is the output terminal of the feedforward signal extraction circuit of the main circuit of the combined circuit of similar inputs of the branches and input cancellation. The analog input terminal of the feedforward input branch circuit or the digital input terminal of the feedforward digital input branch circuit, the output terminal of the main path of the main circuit feedforward input coupling circuit, and the output terminal of the feedforward distortion output combining circuit are the corresponding analog or digital input terminals, main power output terminals, and distortion output terminals of the feedforward distortion extraction circuit of the main circuit of the combined circuit of similar inputs of the branches and input cancellation.

[0087] In the series circuit of branch similar input combining cancellation main circuit and feedforward output cancellation, the main circuit feedforward output cancellation circuit is composed of a feedforward main circuit delay circuit whose main input terminal is connected to the output terminal of the feedforward cancellation coupling circuit, and a feedforward distortion adjustment power amplifier circuit whose coupling input terminal is connected to the output terminal of the feedforward distortion adjustment power amplifier circuit. The input terminal of the feedforward main circuit delay circuit is the main power input terminal of the main circuit feedforward output cancellation circuit, the input terminal of the feedforward distortion adjustment power amplifier circuit is the distortion input terminal of the main circuit feedforward output cancellation circuit, and the output terminal of the feedforward cancellation coupling circuit is the output terminal of the main circuit feedforward output cancellation circuit.

[0088] In the series circuit of branch similar input combining cancellation and feedforward output cancellation, the input terminal of the main path of the main path feedforward input coupling circuit, the feedforward distortion adjustment power amplifier circuit connected to the output terminal of the feedforward main path delay circuit and the feedforward distortion output combining circuit, and the output terminal of the feedforward cancellation coupling circuit form the main path feedforward combining cancellation circuit from the input terminal of the main path feedforward input coupling circuit to the output terminal of the feedforward cancellation coupling circuit.

[0089] Among them, the input terminal of the feedforward input branch circuit and the feedforward output cancellation series circuit of the branch similar input combining circuit and the input cancellation combining circuit of the main circuit of the main circuit of the feedforward distortion extraction circuit of the feedforward main circuit of the main signal adjustment power amplifier circuit is connected to the input terminal of the feedforward input branch circuit and another output terminal, or is installed in the main signal delay adjustment circuit of the input combining circuit or input cancellation.

[0090] The same type of cancellation characteristic at the output of the branch similar input combining cancellation main circuit and the feedforward output cancellation series circuit is as follows: When the output of the branch similar input combining and input cancellation main circuit reaches a Class C main power linear ACPR of 40-45 dBc or higher, under the conditions that the time delay is equal or nearly equal, the amplitude is equal or nearly equal, and the phase is opposite or nearly opposite at the feedforward cancellation synchronous power point, the distortion signal extracted by the feedforward distortion extraction circuit of the branch similar input combining and input cancellation main circuit output from the branch similar input combining and input cancellation main circuit is the Class C main power signal with a gain linear dynamic range expansion. The distortion signals in the Class C main power signal are of the same type. At the output of the main path feedforward combining cancellation circuit, when the time delay is equal or nearly equal, the amplitude is equal or nearly equal, and the phase is opposite or nearly opposite at the point equal to the feedforward cancellation synchronization power point, the linear dynamic range of the gain of the main power signal output by the branch similar input combining circuit and the input cancellation circuit of the main path circuit is extended. This achieves the cancellation of the same type of distortion signals in the Class C main power signal, and further extends the linear dynamic range of the gain of the main power signal, reaching the linear dynamic range of the gain of the Class AB output main power signal. It also improves the EVM value and gain fluctuation within the extended linear dynamic range of the gain, and increases the linear dynamic range of the Class AB main power signal output by the circuit of the branch similar input combining cancellation main path and the feedforward output cancellation series circuit to achieve a linear ACPR value of 50-55dBC or higher for the Class AB output power signal, thereby improving the overall efficiency.

[0091] In an exemplary embodiment, the input shunt circuit, the parallel input shunt circuit, the input shunt circuit with branch-main combining or branch-main canceling, the input shunt circuit with input combining or input canceling, the output canceling input shunt circuit, and the feedforward input shunt circuit are composed of shunt circuits, or coupling circuits, or other circuits that realize the shunt function, and respectively meet the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits above;

[0092] Among them, the combined digital input splitter circuit, the parallel digital input splitter circuit, the feedforward digital input splitter circuit, the input combined digital input splitter circuit, the input cancelling digital input splitter circuit, and the output cancelling digital input splitter circuit are composed of digital splitter circuits and meet the requirements of digital signals. Both output terminals are digital terminals, or one of them is a digital signal output terminal and the other digital output terminal is an analog output terminal connected to the output terminal of the digital-to-analog converter circuit. They also meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above.

[0093] Among them, the combined output coupling circuit, load coupling circuit, feedback coupling circuit, main feedforward input coupling circuit, and feedforward cancellation coupling circuit are composed of coupling circuits or other circuits that realize coupling functions, and respectively meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above.

[0094] Among them, the parallel output combining circuit, the branch main combining circuit or the branch main canceling output combining circuit, the input combining circuit or the input canceling distortion output combining circuit, the output canceling distortion output combining circuit, and the feedforward distortion output combining circuit are composed of combining circuits or coupling circuits, or other circuits that realize the combining function, and respectively meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above.

[0095] Among them, the input combining or input canceling main signal adjustment power amplifier circuit, the output canceling main signal adjustment power amplifier circuit, and the feedforward main signal adjustment power amplifier circuit are composed of the amplitude modulation circuit of the input combining or input canceling or output canceling or feedforward main circuit connected in series with the phase modulation circuit of the input combining or input canceling or output canceling or feedforward main circuit, and the adjustment circuit of the input combining or input canceling or output canceling or feedforward main circuit connected in series with the main signal power amplifier circuit of the input combining or input canceling or output canceling or feedforward main circuit. It meets the main signal power capacity requirements of the corresponding circuits above and does not generate new distortion.

[0096] Among them, the output distortion cancellation adjustment power amplifier circuit, the input combining or input distortion cancellation adjustment power amplifier circuit, and the feedforward distortion adjustment power amplifier circuit are composed of an input combining or input cancellation or output cancellation or feedforward amplitude modulation circuit connected in series with an input combining or input cancellation or output cancellation or feedforward phase modulation circuit to form an adjustment circuit, and then connected in series with an input combining or input cancellation or output cancellation or feedforward distortion signal power amplifier circuit. In addition, it meets the corresponding power capacity requirements of the corresponding distortion signal in the above corresponding circuits and does not generate new distortion requirements.

[0097] The input combining or input cancelling main signal delay adjustment circuit and the output cancelling main signal delay adjustment circuit are composed of an input combining or input cancelling adjustment circuit or an output cancelling adjustment circuit formed by connecting the input combining or input cancelling phase modulation circuit or the output cancelling phase modulation circuit in series, and an input combining or input cancelling or output cancelling delay circuit in series. They also meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above.

[0098] Among them, the coupled output load circuit of input combining or input canceling or output canceling is composed of the main path output terminal of the load coupling circuit of input combining or input canceling or output canceling connected to the ungrounded end of the load resistor of input combining or input canceling or output canceling, and meets the power capacity requirements and the requirement of not generating new distortion in the corresponding circuit above.

[0099] The input combining, input canceling, or output canceling coupled feedback adjustment circuit is connected to the input combining, input canceling, or output canceling feedback signal adjustment power amplifier circuit by connecting the coupled output terminal of the input combining, input canceling, or output canceling feedback coupling circuit. The input combining, input canceling, or output canceling feedback signal adjustment power amplifier circuit is composed of an input combining, input canceling, or output canceling amplitude modulation circuit connected to the input combining, input canceling, or output canceling feedback signal power amplifier circuit or an amplitude modulation circuit, and meets the power capacity requirements and the requirement of not generating new distortion in the above corresponding circuits.

[0100] In one exemplary embodiment, the connection with the ET envelope tracking circuit constitutes a similar combining and canceling ET power amplifier circuit;

[0101] The ET envelope tracking circuit is composed of two output terminals of the ET branch circuit, which are connected to the input terminal of the envelope tracking control circuit and the input terminal of the ET main signal adjustment delay circuit respectively. The envelope tracking control circuit is composed of the output terminal of the envelope tracking signal processing circuit connected to the envelope input terminal of the control power supply circuit. The input terminal of the ET input branch circuit, the multiple power output terminals of the control power supply circuit with different voltages in the envelope tracking control circuit, the power input terminal, and the main signal output terminal of the ET main signal adjustment delay circuit are respectively the input terminal and power output terminal of the ET envelope tracking circuit, and the power input terminal and main signal output terminal.

[0102] The ET envelope tracking circuit is connected to the drain power supply terminals of multiple power amplifier circuits with different and the same voltages in a similar combining and canceling power amplifier circuit through multiple power output terminals with different and the same voltages. The ET envelope tracking circuit is connected to the power supply, and the main signal output terminal of the ET envelope tracking circuit is connected to the input terminal of the similar combining and canceling power amplifier circuit, thus forming a similar combining and canceling ET power amplifier circuit.

[0103] In the aforementioned similar combining and canceling ET power amplifier circuit, the ET envelope tracking control power supply and power of the power amplifier circuit of the similar combining input canceling main circuit of the branch are characterized as follows: by segmenting the envelope tracking signal and according to the relationship between drain voltage and output power, the corresponding main output power is achieved under different drain voltage combinations in the similar combining and canceling power amplifier circuit corresponding to each segment region of the envelope tracking signal.

[0104] The conversion of the envelope tracking signal between segments requires readjusting the input combining and input cancellation characteristics of the main circuit output terminal of the main circuit that achieves similar input combining and input cancellation of the branch, or readjusting the output cancellation characteristics of the main circuit output terminal of the main circuit that achieves similar input combining and branch output cancellation, or readjusting the linear ACPR value of the output main power signal of the power amplifier circuit that achieves similar combining and cancellation characteristics of the main circuit output terminal of the main circuit that achieves similar input combining and feedforward output cancellation in series to 55dBc or higher, and improving the overall efficiency; the sum of the time delay consumed and the signal processing time delay of the envelope tracking signal in the envelope tracking control circuit and the time delay required for the control power supply circuit to change the voltage is equal to the time delay of the main signal adjustment delay circuit, or the sum of the time delay consumed and the envelope signal processing time delay of the envelope tracking control circuit and the time delay required for the control power supply to change the voltage under the condition of known envelope tracking signal segment area information is synchronously equal to the sum of the envelope signal processing time delay of the envelope tracking control circuit and the time delay required for the control power supply to change the voltage, and is equal to the time delay of the ET main signal adjustment delay circuit;

[0105] The relationship between drain voltage and output power is characterized as follows: when the output power of the similarly combined and canceled power amplifier circuits decreases from a high power value to a low power value, the drain voltage of the multiple power amplifier circuits can decrease from the original high voltage combination to the low voltage drain voltage combination corresponding to the power value; when the output power of the similarly combined and canceled power amplifier circuits increases from a low power value to a high power value, the drain voltage of the multiple power amplifier circuits should first increase from the original low voltage combination to the high voltage combination corresponding to the power value of the high power value before the output power can change from a low power value to a high power value.

[0106] This disclosure can be applied to signal power amplification devices in wireless communication devices, wired communication devices, audio amplification devices, radio frequency power supply devices, etc.

[0107] The beneficial effect of this disclosure is that it increases the linear ACPR value of the main power signal of the branch similar input combiner and the main signal combiner circuit to 30-35 dBc or higher, and at the same time increases the linear ACPR value of the main power signal of the branch similar input combiner and the cancel combiner main circuit to 40-45 dBc or higher. Attached Figure Description

[0108] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure. In the drawings:

[0109] Figure 1 shows a schematic diagram of a main circuit for combining branch-similar inputs and the main signal according to the present disclosure;

[0110] Figure 2 shows a schematic diagram of a main circuit combining branch-similar inputs and input cancellation according to the present disclosure;

[0111] Figure 3 shows a schematic diagram of a main circuit combining branch-similar inputs and input cancellation according to the present disclosure;

[0112] Figure 4 shows a schematic diagram of another branch-similar input combiner and input cancellation combiner main circuit according to the present disclosure;

[0113] Figure 5 shows a schematic diagram of a main circuit combining branch similar input cancelling and branch output cancelling according to the present disclosure;

[0114] Figure 6 shows a schematic diagram of a main circuit combining branch similar input cancelling and branch output cancelling according to the present disclosure;

[0115] Figure 7 shows a schematic diagram of a main circuit with branch similar input combining cancellation main circuit and feedforward output cancellation connected in series according to the present disclosure. Detailed Implementation

[0116] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0117] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0118] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0119] The following embodiments will illustrate the similar combining and canceling power amplifier circuits of this disclosure.

[0120] Example 1

[0121] As shown in Figure 1, in Embodiment 1, the specific implementation method is as follows: a main circuit for combining the branch similar input combiner and the main signal in a power amplifier circuit with similar combiner and cancellation is provided, which is composed of the output terminal of the combined circuit of the analog distortion extraction and adjustment amplifier circuit of the main signal and the branch similar input combiner and the input terminal of the main power amplifier circuit.

[0122] The circuit that combines the analog distortion extraction, adjustment, and amplification circuit of the main signal and the similar input circuit of the branch is connected to the input branch circuit and the output branch circuit of the main signal. The circuit is then connected in parallel to the input terminals and output terminals of the two circuits of the analog distortion extraction, adjustment, and amplification circuit of the similar input circuit of the branch and the main signal delay adjustment circuit of the input circuit. This forms the circuit that combines the analog distortion extraction, adjustment, and amplification circuit of the similar input circuit of the branch and the main signal.

[0123] Specifically, a branch-like input combining circuit is formed by connecting the output of the analog distortion circuit of the branch-like input combining circuit to the main path input of the coupled output load circuit of the input combining circuit or the input of the amplitude modulation attenuation circuit of the input combining circuit. This circuit, along with the main signal adjustment power amplifier circuit of the input combining circuit, is connected in parallel to the input and output of the corresponding two circuits. The output of the branch-like input combining circuit is then connected to the input of the distortion adjustment power amplifier circuit of the input combining circuit, thus forming a branch-like input combining circuit circuit with the function of a distortion extraction and adjustment amplifier circuit for analog distortion of the branch-like input combining circuit.

[0124] Among them, the main branch input shunt circuit and the input shunt circuit are composed of shunt circuits, or coupling circuits, or other circuits that realize the shunt function, and respectively meet the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits.

[0125] Among them, the main branch and output combining circuit, and the input combining distortion output combining circuit, are composed of combining circuits or coupling circuits, or other circuits that realize the combining function, and respectively meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits.

[0126] The main signal adjustment power amplifier circuit of the input combiner is composed of an amplitude modulation circuit connected in series with a phase modulation adjustment circuit connected in series with the main signal power amplifier circuit. It meets the requirements of the main signal power capacity in the corresponding circuit above, and does not generate new distortion.

[0127] The distortion adjustment power amplifier circuit of the input combiner is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, and then connecting the distortion signal power amplifier circuit in series. It meets the corresponding power capacity requirements of the distortion signal in the above circuits and does not generate new distortion.

[0128] The input combining main signal delay adjustment circuit is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, or an adjustment circuit formed by an amplitude modulation circuit connected in series with a main signal delay circuit, and meets the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above.

[0129] The input combining coupled output load circuit consists of the main path output terminal of the input combining load coupling circuit connected to the ungrounded end of the input combining load resistor. The main path input terminal and coupled output terminal of the input combining load coupling circuit are respectively the main path input terminal and output terminal of the coupled output load circuit of the branch input combining circuit. The output terminal of the coupled output load circuit of the branch input combining circuit is the output terminal of the analog pre-distortion signal extraction circuit of the similar input combining circuit of the branch.

[0130] Among them, the analog distortion circuit of the branch similar input combiner, through the branch power amplifier circuit of the low power input combiner or the branch feedforward power amplifier circuit of the input combiner, forms the analog distortion circuit of the branch similar input combiner, which generates a distortion signal with input in-phase combiner compensation, and has the characteristic of extending the gain linear dynamic range of the main power signal smaller than the synchronous power point of the input combiner in the Class C main power signal output by the Class C main power amplifier circuit to a smaller output main power signal.

[0131] The main power amplifier circuit is a Class C main power amplifier circuit, which consists of a single power amplifier circuit or multiple power amplifier circuits combined through a combining circuit or an impedance transformation network. The main power amplifier circuit can be a single-stage or multi-stage power amplifier circuit.

[0132] The beneficial effect of this embodiment 1 is that, at the synchronous power point of the analog distortion extraction and adjustment amplifier circuit of the branch similar input combining circuit and the input combining main circuit of the main signal, when the time delay is equal or nearly equal, the amplitude is equal or nearly equal, and the phase of the two circuits in the analog distortion extraction and adjustment amplifier circuit of the branch similar input combining circuit and the main circuit of the main signal is within the range of 0 degrees to 45 degrees, wherein, in the connection circuit of the main signal branch similar input combining circuit that satisfies the above conditions, the branch similar input combining circuit... The distortion signal output from the main power amplifier circuit, which has input in-phase combiner compensation, is generated at the output of the distortion extraction and adjustment amplifier circuit of the analog distortion extraction and adjustment amplifier circuit of the similar input combiner in the main signal branch. This distortion signal has the characteristic of extending the linear dynamic range of the gain of the Class C main power signal output from the main power amplifier circuit (which is smaller than the synchronous power point of the input combiner) to a smaller output main power signal. This is achieved when the distortion extraction and adjustment amplifier circuit of the analog distortion extraction and adjustment amplifier circuit of the similar input combiner in the branch and the main signal combiner in the main circuit... At the output terminal, when the time delay is equal to, and the amplitude is equal to or nearly equal to, the distortion extraction and adjustment amplifier circuit for analog distortion of the branch-similar input combined circuit and the main signal delay adjustment circuit for the input combined circuit are both within the range of 0 to 45 degrees. Specifically, when the phase of the two circuits is within a certain value within the range of 0 to 45 degrees, such as around 20 degrees, then the distortion signal generated by the distortion extraction and adjustment amplifier circuit for analog distortion of the branch-similar input combined circuit with in-phase combined circuit compensation and the Class C main circuit power can be achieved. The gain linear dynamic range of the Class C main power signal output by the power amplifier circuit, which is smaller than the input combining synchronous power point, is extended to achieve the best combining compensation effect for the smaller output main power signal. This also improves the EVM value and gain fluctuation within the already extended gain linear dynamic range of the output main power signal, enhances the distortion extraction adjustment amplifier circuit for analog distortion in similar input combining branches, and extends the gain linear dynamic range of the Class C main power signal to a linear ACPR value of 30–35 dBc or higher.

[0133] Example 2

[0134] As shown in Figure 2, the specific implementation of Embodiment 2 of this disclosure is as follows:

[0135] A power amplifier circuit with similar input combining and cancellation is provided. The output terminal of the parallel circuit of similar input combining and cancellation of the main signal branch is connected to the main power amplifier circuit to form a main circuit circuit with similar input combining and input cancellation of the branch.

[0136] The parallel circuit for combining and canceling similar inputs of the main signal branch is composed of a parallel input shunting circuit, a parallel output combining circuit, and a distortion extraction, adjustment, and amplification circuit for the analog-digital distortion circuit of the parallel input combining circuit of the branch similar inputs and the analog-digital distortion circuit of the auxiliary circuit of the branch similar input canceling circuit. The input of the parallel input shunting circuit and the output of the parallel output combining circuit are the corresponding input and output of the parallel circuit for combining and canceling similar inputs of the main signal branch.

[0137] The analog-digital distortion circuit of the branch similar input combiner is composed of an analog-digital predistortion circuit that generates an input in-phase compensation distortion signal and has the characteristic of extending the gain linear dynamic range of the main power signal with a gain less than the synchronous power point of the input combiner to a smaller output power signal. This circuit generates an input in-phase compensation distortion signal and has the characteristic of extending the gain linear dynamic range of the main power signal with a gain less than the synchronous power point of the input combiner to a smaller output power signal. The output of the digital-to-analog converter of the input combiner is connected to the input of the analog power amplifier circuit of the low-power input combiner. The feedback input of the analog-digital predistortion circuit is connected to the feedback output of the input combiner coupling feedback adjustment circuit installed at the output of the main power amplifier circuit, forming a main signal and branch similar input combiner combined circuit with the analog-digital distortion circuit of the branch similar input combiner function.

[0138] The output of the analog-digital distortion circuit with similar inputs in the branch circuit is connected to the main power amplifier circuit. The output of the main power amplifier circuit is connected to the main input of the input cancellation coupling feedback adjustment circuit. The coupling output of the input cancellation coupling feedback adjustment circuit is connected to the feedback input of the analog-digital distortion circuit with similar inputs in the branch circuit, thus forming a main circuit with analog-digital distortion of similar inputs in the branch circuit.

[0139] Specifically, the signal extraction circuit of the auxiliary circuit for analog-digital distortion of branch-similar input combining circuit is formed by connecting the output terminal of the auxiliary circuit for analog-digital distortion of branch-similar input combining circuit to the main path input terminal of the coupled output load circuit for input cancellation or the input terminal of the input cancellation amplitude modulation attenuation circuit. This circuit, together with the main signal adjustment power amplifier circuit for input cancellation, is connected in parallel to the input terminals and output terminals of the corresponding two circuits through the input cancellation input shunt circuit and the input cancellation distortion output combining circuit. The output terminal of the distortion extraction circuit of the auxiliary circuit for analog-digital distortion of branch-similar input combining circuit is connected to the input terminal of the distortion adjustment power amplifier circuit for input cancellation, thus forming the distortion extraction and adjustment amplifier circuit of the auxiliary circuit for analog-digital distortion of branch-similar input combining circuit.

[0140] Specifically, by replacing the main power amplifier circuit in the analog-digital distortion main circuit of the branch-similar input combining circuit with a similar low-power Class C input first auxiliary circuit power amplifier circuit, an auxiliary circuit of analog-digital distortion with branch-similar input cancellation is formed, and the auxiliary circuit of analog-digital distortion with branch-similar input cancellation has characteristics similar to the distortion signal of Class C main power signal with a gain linear dynamic range extension that is greater than the input cancellation synchronization power point.

[0141] The input cancellation coupled output load circuit consists of the main path output terminal of the input cancellation load coupling circuit connected to the ungrounded end of the input cancellation load resistor. The main path input terminal and coupled output terminal of the input cancellation load coupling circuit are respectively the main path input terminal and output terminal of the branch input cancellation coupled output load circuit. The output terminal of the branch input cancellation coupled output load circuit is the output terminal of the signal extraction circuit of the auxiliary circuit for analog-digital distortion in the branch similar input cancellation combined circuit.

[0142] Among them, the parallel input shunt circuit and the input cancellation input shunt circuit are composed of shunt circuits, or coupling circuits, or other circuits that realize the shunt function, and respectively meet the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits above.

[0143] Among them, the parallel output combining circuit and the input distortion cancellation output combining circuit are composed of combining circuits or coupling circuits, or other circuits that realize the combining function, and respectively meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits.

[0144] The input cancellation main signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected in series with a phase modulation adjustment circuit connected in series with the main signal power amplifier circuit. It meets the main signal power capacity requirements of the corresponding circuits above and does not generate new distortion.

[0145] The distortion adjustment power amplifier circuit for input cancellation is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, and then connecting the distortion signal power amplifier circuit in series. It meets the corresponding power capacity requirements of the distortion signal in the above-mentioned circuits and does not generate new distortion.

[0146] Among them, the input cancellation coupling feedback adjustment circuit and the input combining coupling feedback adjustment circuit are connected to the feedback signal adjustment power amplifier circuit by the coupling output terminal of the feedback coupling circuit. The feedback signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected to the feedback signal power amplifier circuit, or is composed of an amplitude modulation circuit.

[0147] Among them, the main power amplifier circuit in the main circuit of the branch similar input combiner and input cancellation combiner is a Class C main power amplifier circuit, which is composed of a single power amplifier circuit or multiple power amplifier circuits combined through a combiner or through an impedance transformation network. The main power amplifier circuit is a single-stage or multi-stage power amplifier circuit.

[0148] The beneficial effect of this embodiment 2 is that the combining and cancellation characteristics at the output of the main circuit of the branch similar input combining and input cancellation are as follows: at the input combining synchronization power point in the main circuit of the branch similar input combining and main signal combining and the input cancellation synchronization power point in the main circuit of the branch similar input combining and input cancellation combining and main signal combining, the time delay is equal or nearly equal, the amplitude is equal or nearly equal, and the phase of the two circuits in the main circuit of the branch similar input combining and main signal combining is between 0 degrees and Within a 45-degree range, when the phases of the main circuit of the similar input combining circuit and the input cancellation circuit are opposite or nearly opposite, in the parallel circuit of the similar input combining circuit and the cancellation circuit of the main signal branch, the distortion signal with input in-phase combining compensation output by the similar input combining circuit of the branch and the pre-distortion signal with input out-of-phase similar cancellation output by the similar input cancellation circuit of the branch, generate a combined cancellation composite distortion signal at the output of the parallel circuit of the similar input combining circuit and the cancellation circuit of the main signal branch.

[0149] In the combined distortion signal of the collapsible cancellation, the distortion signal generated by the branch similar input combiner circuit and compensated by the input in-phase combiner has the characteristic of expanding the linear dynamic range of the gain of the main power signal output from the Class C main power amplifier circuit that is smaller than the input combiner synchronization power point to a smaller output main power signal. At the output of the branch similar input combiner and the main signal combiner circuit of the input cancelling combiner main circuit, the time delay, amplitude and near-equality at the input combiner synchronization power point are equal, and the phase of the two circuits is between 0 degrees and 45 degrees. Within a certain range, the gain linear dynamic range compensation of the distorted signal with in-phase combining compensation generated by the branch similar input combining circuit and the Class C main power signal output by the Class C main power amplifier circuit, which is smaller than the input combining synchronous power point, is extended to a smaller output main power signal. Furthermore, within the already extended smaller output main power signal gain linear dynamic range, the EVM value and gain fluctuation are improved, increasing the linear ACPR value of the Class C main power signal of the branch similar input combining circuit and the main signal combining main circuit to above 30–35 dBc.

[0150] Specifically, when the branch-similar input combining main circuit reaches the range of linear dynamic range extension of the Class C main power signal gain, and the linear ACPR value of the output Class C main power signal reaches 30-35dBc or higher, the pre-distorted signal generated by the input anti-phase similarity cancellation in the combined distortion signal of the branch-similar input cancellation circuit has characteristics similar to the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal of the main power signal of the branch-similar input combining and main signal combining main circuits. At the output of the circuit, when the time delay, amplitude, and phase at the input cancellation synchronization power point are equal or nearly equal, the pre-distortion signal with anti-phase similar cancellation generated by the branch similar input cancellation circuit and the distortion signal in the Class C main power signal of the main power signal of the branch similar input combining circuit and the main signal combining circuit of the main circuit with the main signal have an extended linear dynamic range of gain, which is greater than the input cancellation synchronization power point. This improves the linear ACPR value of the Class C main power signal output by the branch similar input combining circuit and the main circuit with the input cancellation to above 40-45 dBc. Alternatively, it can achieve anti-phase similarity cancellation of the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal of the combined main circuit of the branch similar input cancellation circuit with the pre-distortion signal generated by the branch similar input cancellation circuit and the main signal, and achieve anti-phase similarity cancellation of the pre-distortion signal with the pre-distortion signal generated by the branch similar input cancellation circuit and the main signal, and improve the EVM value and gain ripple within the already expanded smaller output main power signal gain linear dynamic range, and improve the linear ACPR value of the Class C main power signal of the combined main circuit of the branch similar input cancellation circuit to above 40-45 dBC. And through the higher ACPR value, it can improve the overall efficiency of a power amplifier circuit with similar combination and cancellation.

[0151] Specifically, the similarity and synchronization accuracy of the pre-distorted signal generated by the branch similar input cancellation circuit with the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal of the main power signal of the branch similar input combiner and the main signal combiner are determined to achieve the effect of anti-phase similar cancellation between the pre-distorted signal with anti-phase similar cancellation generated by the branch similar input cancellation circuit and the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal of the main power signal of the branch similar input combiner and the main signal combiner are determined to achieve the effect of anti-phase similar cancellation between the pre-distorted signal with anti-phase similar cancellation generated by the branch similar input cancellation circuit and the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal of the main power signal of the branch similar input combiner and the main signal combiner are determined to achieve the effect of anti-phase similar cancellation between the branch similar input cancellation circuit and the main signal combiner.

[0152] Example 3

[0153] As shown in Figure 3, the specific implementation of Embodiment 3 of this disclosure is as follows:

[0154] A power amplifier circuit with similar input combining and input cancellation is provided. The output terminal of the series circuit of similar input combining and input cancellation of the main signal branch is connected to the main power amplifier circuit. The output terminal of the main power amplifier circuit is connected to the input terminal of the coupling feedback adjustment circuit of input cancellation. The coupling output terminal of the series circuit of similar input combining and input cancellation of the main signal branch is connected to the coupling input terminal of the coupling feedback adjustment circuit of input cancellation, forming a main circuit of similar input combining and input cancellation of the branch.

[0155] The series circuit for combining and canceling the similar inputs of the main signal branch is composed of a circuit combining the main signal and the similar inputs of the branch, and a digital predistortion circuit for canceling the similar inputs of the branch, connected in series. The output terminal of the circuit combining the main signal and the similar inputs of the branch, and the input terminal of the digital predistortion circuit for canceling the similar inputs of the branch, are the corresponding output and input terminals of the series circuit for combining and canceling the similar inputs of the main signal branch.

[0156] The output of the circuit that combines the main signal and the branch similar input circuit is connected to the input of the main power amplifier circuit, forming the main circuit that combines the branch similar input circuit and the main signal.

[0157] The output of the digital predistortion circuit that cancels out branch similar inputs is connected to the input of the main circuit that combines branch similar inputs and the main signal, forming the main circuit that combines branch similar inputs and cancels out inputs.

[0158] The main signal and the branch similar input combination circuit are connected by the input branch circuit, the output combination circuit of the branch main circuit, and the input and output terminals of the two circuits of the analog distortion extraction adjustment amplifier circuit of the branch similar input combination circuit and the main signal delay adjustment circuit of the input combination circuit, which are connected in parallel, to form the main signal and the branch similar input combination circuit.

[0159] Specifically, a branch-like input combining circuit is formed by connecting the output of the analog distortion circuit of the branch-like input combining circuit to the main path input of the coupled output load circuit of the input combining circuit or the input of the amplitude modulation attenuation circuit of the input combining circuit. This circuit, along with the main signal adjustment power amplifier circuit of the input combining circuit, is connected in parallel to the input and output of the corresponding two circuits. The output of the branch-like input combining circuit is then connected to the input of the distortion adjustment power amplifier circuit of the input combining circuit, thus forming a branch-like input combining circuit circuit with the function of a distortion extraction and adjustment amplifier circuit for analog distortion of the branch-like input combining circuit.

[0160] Among them, the input branch circuit of the main branch and the input branch circuit of the input branch are composed of branch circuits, or coupling circuits, or other circuits that realize the branch function, and respectively meet the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits.

[0161] Among them, the output combining circuit of the main branch and the output combining circuit of the input combining distortion are composed of combining circuits or coupling circuits, or other circuits that realize the combining function, and respectively meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits.

[0162] The input combining main signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected in series with a phase modulation adjustment circuit connected in series with the main signal power amplifier circuit. It meets the main signal power capacity requirements of the corresponding circuits above and does not generate new distortion.

[0163] The input combining distortion adjustment power amplifier circuit is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, and then connecting the distortion signal power amplifier circuit in series. It meets the corresponding power capacity requirements of the distortion signal in the above circuits and does not generate new distortion.

[0164] The input combining main signal delay adjustment circuit is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, or an adjustment circuit formed by an amplitude modulation circuit connected in series with a main signal delay circuit, and meets the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above.

[0165] The coupled output load circuit of the input combiner consists of the main path output terminal of the input combiner load coupling circuit connected to the ungrounded end of the input combiner load resistor. The main path input terminal and coupled output terminal of the input combiner load coupling circuit are respectively the main path input terminal and output terminal of the coupled output load circuit of the branch input combiner. The output terminal of the coupled output load circuit of the branch input combiner is the output terminal of the analog pre-distortion signal extraction circuit of the similar input combiner of the branch.

[0166] Among them, the analog distortion circuit of the branch similar input combiner, formed by the low-power branch power amplifier circuit of the input combiner or the branch feedforward power amplifier circuit of the input combiner, has the function of generating the distortion signal of the input in-phase combiner compensation and the characteristic of compensating the gain linear dynamic range of the main power signal of the Class C main power signal output by the Class C main power amplifier circuit that is smaller than the synchronous power point of the input combiner to the smaller output power signal.

[0167] The main power amplifier circuit is a Class C main power amplifier circuit, which consists of a single power amplifier circuit or multiple power amplifier circuits combined through a combining circuit or an impedance transformation network. The main power amplifier circuit can be a single-stage or multi-stage power amplifier circuit.

[0168] The digital predistortion circuit for branch similar input cancellation is composed of a digital predistortion circuit that generates an input inverse similarity cancellation distortion signal and has the characteristics of a Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input combining circuit and the main signal, which is greater than the input cancellation synchronization power point. The output of the input cancellation digital-to-analog converter is connected to the input of the input cancellation low-power analog power amplifier circuit. The feedback input of the digital predistortion circuit is connected to the feedback output of the branch input cancellation coupling feedback adjustment circuit installed at the output of the main power amplifier circuit, forming a main signal and branch similar input cancellation combined circuit with the function of digital predistortion circuit for branch similar input cancellation.

[0169] The input cancellation coupling feedback adjustment circuit is connected to the feedback signal adjustment power amplifier circuit by the coupling output terminal of the feedback coupling circuit. The feedback signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected to the feedback signal power amplifier circuit or is composed of an amplitude modulation circuit.

[0170] The beneficial effect of this embodiment 3 is that the combining and cancellation characteristics of the branch similar input combining and input cancellation combining main circuit output terminal of a power amplifier circuit with similar combining and cancellation are as follows: at the input combining synchronous power point in the main circuit of the branch similar input combining and main signal combining and the input cancellation synchronous power point in the main circuit of the branch similar input combining and input cancellation combining and the main circuit, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delay is equal or nearly equal, and the amplitude is equal or nearly equal, the two in the branch similar input combining and main signal combining main circuit are... When the phase of the circuit is within the range of 0 to 45 degrees, and the phase of the main circuit in the branch similar input combining circuit and the input cancellation circuit is opposite or nearly opposite, in the parallel or series circuit of the main signal branch similar input combining circuit and the input cancellation circuit that satisfies the above conditions, the distortion signal with input in-phase combining compensation output by the branch similar input combining circuit and the pre-distortion signal with input out-of-phase similar cancellation output by the branch similar input cancellation circuit generate a combined cancellation composite distortion signal at the output terminal of the parallel or series circuit of the main signal branch similar input combining circuit and the input cancellation circuit.

[0171] In the combined distortion signal of the collapsible cancellation, the distortion signal generated by the branch similar input combiner circuit and compensated by the input in-phase combiner has the characteristic of expanding the linear dynamic range of the gain of the main power signal output from the Class C main power amplifier circuit that is smaller than the input combiner synchronization power point to a smaller output main power signal. At the output of the branch similar input combiner and the main signal combiner circuit of the input cancelling combiner main circuit, the time delay, amplitude and near-equality at the input combiner synchronization power point are equal, and the phase of the two circuits is between 0 degrees and 45 degrees. Within a certain range, the gain linear dynamic range compensation of the distorted signal with in-phase combining compensation generated by the branch similar input combining circuit and the Class C main power signal output by the Class C main power amplifier circuit is extended to a smaller output main power signal with a gain linear dynamic range smaller than the input combining synchronous power point. Furthermore, within the already extended smaller output main power signal gain linear dynamic range, the EVM value and gain fluctuation are improved, increasing the linear ACPR value of the Class C main power signal of the branch similar input combining circuit and the main signal combining main circuit to above 30–35 dBc.

[0172] Specifically, when the output of the main circuit combining the branch-similar input combiner and the main signal reaches a linear ACPR value of 30-35 dBc or higher for the Class C main signal with a gain linear dynamic range extension, the pre-distorted signal generated by the branch-similar input cancellation circuit in the combined distortion signal has similar characteristics to the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal with a gain linear dynamic range extension of the main power signal of the main circuit combining the branch-similar input combiner and the main signal. At the output of the main circuit combining the branch-similar input combiner and the input cancellation circuit, When the time delay at the input cancellation synchronization power point is equal or nearly equal, the amplitude is equal or nearly equal, and the phase is opposite or nearly opposite, the pre-distortion signal with anti-phase similarity cancellation generated by the branch similar input cancellation circuit and the distortion signal in the Class C main power signal of the branch similar input combining circuit and the main signal combining circuit of the main circuit with the main signal have an extended linear dynamic range of gain and are greater than the input cancellation synchronization power point, the linear ACPR value of the Class C main power signal with an extended linear dynamic range of gain of the branch similar input combining circuit and the main circuit with the input cancellation is increased to above 40-45 dBC. Alternatively, it can achieve anti-phase similarity cancellation of the pre-distorted signal with anti-phase similarity cancellation generated by the branch similar input cancellation circuit and the main power signal of the combined main circuit of the branch similar input and the main signal, in which the distortion signal greater than the input cancellation synchronization power point of the Class C main power signal is extended by the linear dynamic range of the gain of the main power signal. It can also achieve the linear dynamic range of the gain of the main power signal extended by the Class C output main power signal, further extending it to a smaller output main power signal, and improving the EVM value and gain fluctuation within the already extended smaller output main power signal gain linear range. This improves the linear ACPR value of the Class C main power signal of the combined main circuit of the branch similar input and input cancellation to above 40-45 dBC. Finally, it achieves an improvement in the overall efficiency of a power amplifier circuit with similar combining and cancellation.

[0173] Specifically, the similarity and synchronization accuracy of the pre-distorted signal generated by the branch similar input cancellation circuit with the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal of the main power signal of the branch similar input combiner and the main signal combiner are determined to achieve the effect of anti-phase similar cancellation between the pre-distorted signal with anti-phase similar cancellation generated by the branch similar input cancellation circuit and the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal of the main power signal of the branch similar input combiner and the main signal combiner are determined to achieve the effect of anti-phase similar cancellation between the pre-distorted signal with anti-phase similar cancellation generated by the branch similar input cancellation circuit and the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal of the main power signal of the branch similar input combiner and the main signal combiner are determined to achieve the effect of anti-phase similar cancellation between the branch similar input cancellation circuit and the main signal combiner.

[0174] Example 4

[0175] As shown in Figure 4, the specific implementation of Embodiment 4 of this disclosure is as follows:

[0176] A power amplifier circuit with similar input combining and input cancellation is provided. The output of a series circuit of similar input combining and input cancellation of the main signal branch is connected to the main power amplifier circuit. The output of the main power amplifier circuit is connected to the input of the input combining coupled feedback adjustment circuit. The feedback input of the analog-digital distortion circuit of the input combining is connected to the feedback output of the input combining coupled feedback adjustment circuit. The output of the input combining coupled feedback adjustment circuit is connected to the input of the input cancellation coupled feedback adjustment circuit. The feedback input of the digital predistortion circuit of input cancellation is connected to the feedback output of the input cancellation coupled feedback adjustment circuit, forming a main circuit with similar input combining and input cancellation of the branch.

[0177] The series circuit for the similar input combiner and input cancellation of the main signal branch is composed of the analog-digital distortion circuit of the input combiner and the digital predistortion circuit of the input cancellation, connected in series. The output terminal of the analog-digital distortion circuit of the input combiner and the input terminal of the digital predistortion circuit of the input cancellation are the corresponding output and input terminals of the series circuit for the similar input combiner and input cancellation of the main signal branch.

[0178] The input combining circuit, which has the function of a main circuit for combining analog and digital distortion of input combining circuits, and the main circuit for combining the main signal, consists of the output terminal of the analog and digital distortion circuit for combining input combining circuits connected to the input terminal of the main power amplifier circuit, and the output terminal of the main power amplifier circuit connected to the input terminal of the input combining circuit coupling feedback adjustment circuit. The input terminal of the analog and digital distortion circuit for combining input combining circuits and the output terminal of the input combining circuit coupling feedback adjustment circuit are respectively the input terminal and the output terminal of the main circuit for combining input combining circuits and the main signal.

[0179] The analog-digital distortion circuit of the input combiner generates an analog-digital predistortion circuit that provides input in-phase similarity compensation distortion signal. This predistortion circuit is then connected to the input of a low-power analog power amplifier circuit via the output of the digital-to-analog converter circuit of the input combiner. The feedback input of the analog-digital predistortion circuit is connected to the feedback output of the input combiner coupling feedback adjustment circuit installed at the output of the main power amplifier circuit. This forms a main signal and input combiner circuit with the function of an analog-digital distortion circuit for input combiner.

[0180] The input cancellation digital predistortion circuit generates an input inverse similarity cancellation distortion signal. The output of the input cancellation digital-to-analog converter circuit is connected to the input of the input cancellation low-power analog power amplifier circuit. The feedback input of the digital predistortion circuit is connected to the feedback output of the input cancellation coupling feedback adjustment circuit installed at the output of the main power amplifier circuit, forming a main signal and input cancellation combining circuit with the function of the input cancellation digital predistortion circuit.

[0181] Among them, the input cancellation coupling feedback adjustment circuit and the input combining coupling feedback adjustment circuit are connected to the feedback signal adjustment power amplifier circuit by the coupling output terminal of the feedback coupling circuit. The feedback signal adjustment power amplifier circuit is composed of an amplitude modulation and phase modulation circuit connected to the feedback signal power amplifier circuit or is composed of an amplitude modulation circuit.

[0182] Among them, the main power amplifier circuit in the main circuit of the branch similar input combiner and input cancellation combiner is a Class C main power amplifier circuit, which is composed of a single power amplifier circuit or multiple power amplifier circuits combined through a combiner or through an impedance transformation network. The main power amplifier circuit is a single-stage or multi-stage power amplifier circuit.

[0183] The beneficial effect of Embodiment 4 is as follows: The combining and cancellation characteristics of the input combining and input cancellation combining main circuit output terminals of a power amplifier circuit with similar combining and cancellation are as follows: at the input combining synchronous power point in the main circuit combining the input combining and main signal and at the input cancellation synchronous power point in the main circuit combining the input combining and input cancellation, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delay is equal or nearly equal, and the amplitude is equal or nearly equal, at the input combining circuit and the main signal combining main circuit... When the phases of the two circuits in the circuit are within the range of 0 to 45 degrees, and the phases of the main circuits of the input combining circuit and the input cancelling circuit are opposite or nearly opposite, in the parallel or series circuits of the main signal input combining circuit and the input cancelling circuit that meet the above conditions, the distortion signal output by the input combining circuit with input in-phase combining compensation and the pre-distortion signal output by the input cancelling circuit with input out-of-phase similar cancellation are generated at the output of the parallel or series circuits of the main signal input combining circuit and the input cancelling circuit to form a combined cancelling distortion signal.

[0184] Specifically, when the output of the main circuit combining the input combiner and the main signal reaches a linear ACPR value of 30-35 dBc or higher for the Class C main power signal with linear gain expansion of the main power signal, the pre-distorted signal generated by the input cancellation circuit in the combined distortion signal has similar characteristics to the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal with linear gain expansion of the main power signal of the main circuit combining the input combiner and the main signal. At the output of the main circuit combining the input combiner and the input cancellation, at a value equal to... When the time delays at the input cancellation synchronization power point are equal or nearly equal, the amplitudes are equal or nearly equal, and the phases are opposite or nearly opposite, the pre-distortion signal with anti-phase similar cancellation generated by the input cancellation circuit and the distortion signal in the Class C main power signal of the main power signal of the input combiner and the main signal combined main circuit with linear gain expansion are anti-phase similarly canceled, thereby improving the linear ACPR value of the Class C main power signal of the main power signal output by the input combiner and the input cancellation combined main circuit to above 40-45 dBc.

[0185] Alternatively, it can achieve anti-phase similar cancellation of the pre-distorted signal with anti-phase similar cancellation generated by the input cancellation circuit and the distortion signal greater than the input cancellation synchronization power point in the Class C main power signal of the main circuit combining the input and main signals, and achieve linear expansion of the gain of the Class C output main power signal, further expanding it to a smaller output main power signal. Within this smaller gain linear range, it improves the EVM value and gain fluctuation, increasing the linear ACPR value of the Class C main power signal with linear expansion of the gain of the main circuit combining the input and input cancellation circuits to above 40-45 dBc. This also improves the overall efficiency of a power amplifier circuit with similar combining and cancellation.

[0186] Specifically, the similarity and synchronization accuracy between the pre-distorted signal generated by the input cancellation circuit (which has anti-phase similarity cancellation) and the distortion signal in Class C of the main power signal of the main power signal of the main circuit of the input combiner and the main signal (which has a linear dynamic range of gain extension) that is greater than the input cancellation synchronization power point are determined. This determines the anti-phase similarity cancellation effect of the pre-distorted signal generated by the branch similar input cancellation circuit (which has anti-phase similarity cancellation) and the distortion signal in Class C of the main power signal of the main circuit of the main circuit of the branch similar input combiner and the main signal (which has a linear dynamic range of gain extension) that is greater than the input cancellation synchronization power point.

[0187] Example 5

[0188] As shown in Figure 5, the specific implementation of Embodiment 5 of this disclosure is as follows:

[0189] A power amplifier circuit with similar combining and cancellation is provided. It consists of a combining input shunt circuit and a combining output coupling circuit, and the input and output terminals of a main combining circuit with branch similar input combining and input cancellation and a branch similar output cancellation circuit are connected in parallel to form a power amplifier circuit with similar input combining cancellation and branch output cancellation functions.

[0190] In the main circuit of the branch similar input combiner and input cancellation combiner of the power amplifier circuit described above, the output terminal of the parallel circuit of the main signal branch similar input combiner and input cancellation is connected to the main circuit of the power amplifier circuit to form the main circuit of the branch similar input combiner and input cancellation combiner.

[0191] The output terminal of the combining circuit of the analog-digital predistortion circuit with branch similar input cancellation and the analog distortion extraction and adjustment amplifier circuit with branch similar input cancellation is connected to the input terminal of the main power amplifier circuit, forming a main circuit with branch similar input combining and main signal combining, which has the function of combining the main signal in the analog-digital predistortion circuit with branch similar input cancellation.

[0192] The parallel circuit for similar input combining and input cancellation of the main signal branch is composed of a parallel input shunting circuit, a parallel output combining circuit, and the input and output terminals of the analog-digital predistortion circuit for similar input cancellation of the branch and the distortion extraction and adjustment amplification circuit for analog distortion of similar input combining of the branch. The input terminal of the parallel input shunting circuit and the output terminal of the parallel output combining circuit are the corresponding input and output terminals of the parallel circuit for similar input combining and cancellation of the main signal branch.

[0193] The analog-digital predistortion circuit with branch similar input cancellation is composed of an analog-digital predistortion circuit that generates an input inverse cancellation distortion signal, and an input cancellation digital-to-analog converter circuit whose output is connected to the input of a low-power input cancellation analog power amplifier circuit. The feedback input of the analog-digital predistortion circuit is connected to the feedback output of the input cancellation coupling feedback adjustment circuit installed at the output of the main power amplifier circuit, forming a combined circuit of the main signal and branch similar input cancellation with the function of the analog-digital predistortion circuit with branch similar input cancellation.

[0194] Specifically, a distortion signal extraction circuit for analog distortion of the branch-like input combined circuit is formed by connecting the output terminal of the analog distortion circuit of the branch-like input combined circuit to the main path input terminal of the coupled output load circuit of the input combined circuit or the input terminal of the amplitude modulation attenuation circuit of the input combined circuit. This circuit, together with the main signal adjustment power amplifier circuit of the input combined circuit, is connected in parallel to the input splitter circuit and the distortion output combined circuit of the input combined circuit. The output terminal of the distortion extraction circuit for analog distortion of the branch-like input combined circuit is then connected to the input terminal of the distortion adjustment power amplifier circuit of the input combined circuit, thus forming a branch-like input combined circuit circuit with the function of a distortion extraction and adjustment amplifier circuit for analog distortion of the branch-like input combined circuit.

[0195] Among them, the combined input split circuit, the parallel input split circuit, and the input combined input split circuit are composed of split circuits, or coupling circuits, or other circuits that realize the split function, and respectively meet the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits.

[0196] Among them, the parallel output combining circuit and the input combining distortion output combining circuit are composed of combining circuits or coupling circuits, or other circuits that realize the combining function, and respectively meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits.

[0197] The main signal adjustment power amplifier circuit of the input combiner is composed of an amplitude modulation circuit connected in series with a phase modulation adjustment circuit connected in series with the main signal power amplifier circuit. It meets the requirements of the main signal power capacity in the corresponding circuit above, and does not generate new distortion.

[0198] The distortion adjustment power amplifier circuit of the input combiner is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, and then connecting the distortion signal power amplifier circuit in series. It meets the corresponding power capacity requirements of the distortion signal in the above circuits and does not generate new distortion.

[0199] The coupled output load circuit of the input combiner consists of the main path output terminal of the load coupling circuit of the input combiner connected to the ungrounded end of the load resistor of the input combiner. The main path input terminal and coupled output terminal of the load coupling circuit of the input combiner are respectively the main path input terminal and output terminal of the coupled output load circuit of the branch input combiner. The output terminal of the coupled output load circuit of the branch input combiner is the output terminal of the distortion signal extraction circuit for the analog distortion of the similar input combiner in the branch.

[0200] Among them, the analog distortion circuit of the branch similar input combiner, through the branch power amplifier circuit of the low power input combiner or the branch feedforward power amplifier circuit of the input combiner, forms the analog distortion circuit of the branch similar input combiner, which generates a distortion signal with input in-phase combiner compensation, and has the characteristic of extending the gain linear dynamic range of the main power signal smaller than the synchronous power point of the input combiner in the Class C main power signal output by the Class C main power amplifier circuit to a smaller output main power signal.

[0201] The input cancellation coupling feedback adjustment circuit is connected to the feedback signal adjustment power amplifier circuit by the coupling output terminal of the feedback coupling circuit. The feedback signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected to the feedback signal power amplifier circuit, or is composed of an amplitude modulation circuit.

[0202] In the power amplifier circuit of the similar combining and canceling circuit described above, in the main circuit of the combining circuit of branch similar input combining and branch output canceling, the branch similar output canceling circuit is characterized as follows: by connecting the output terminal of the branch similar input combining circuit of the branch similar output canceling circuit and the input canceling circuit of the auxiliary circuit of the combining ...

[0203] Specifically, by replacing the main power amplifier circuit in the main circuit of the branch similar input combiner and input cancellation combiner with a similar low-power Class C first auxiliary power amplifier circuit, an auxiliary circuit of the branch similar output cancellation combiner and input cancellation combiner is formed. This generates a branch similar output cancellation circuit with a distortion signal that has output inverse similar cancellation and is similar to the distortion signal in the Class C main power signal whose gain is linearly extended by the main power signal of the branch similar input combiner and input cancellation combiner main circuit, which is greater than the output cancellation synchronization power point.

[0204] The output terminal of the distortion extraction circuit of the branch similar output cancellation branch similar input combiner and the input cancellation auxiliary circuit is connected to the input terminal of the output cancellation distortion adjustment power amplifier circuit, forming a branch similar output cancellation circuit with the function of a branch similar input combiner and the input cancellation auxiliary circuit distortion extraction adjustment amplifier circuit.

[0205] In this circuit, the input terminal of the output cancellation input branch circuit and the output terminal of the output cancellation distortion adjustment power amplifier circuit in the branch similar output cancellation circuit correspond to the input terminal and output terminal of the branch similar output cancellation circuit, respectively.

[0206] The output-canceling coupled output load circuit consists of the main path output terminal of the output-canceling load coupling circuit connected to the ungrounded end of the output-canceling load resistor. The main path input terminal and coupled output terminal of the output-canceling load coupling circuit are the main path input terminal and output terminal of the output-canceling coupled output load circuit, respectively. The output terminal of the output-canceling coupled output load circuit is the output terminal of the distortion signal extraction circuit of the branch-similar input combiner and the input-canceling auxiliary circuit of the branch-similar output-canceling circuit.

[0207] The output distortion cancellation output combining circuit consists of a combining circuit or a coupling circuit, or other circuits that perform the combining function, and satisfies the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits mentioned above.

[0208] The output cancellation main signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected in series with a phase modulation adjustment circuit connected in series with the main signal power amplifier circuit. It meets the requirements of main signal power capacity and low power in the corresponding circuits above, and does not generate new distortion.

[0209] The output distortion adjustment power amplifier circuit is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, and then connecting the distortion signal power amplifier circuit in series. It meets the corresponding power capacity requirements of the distortion signal in the above circuits and does not generate new distortion.

[0210] Among them, the output coupling circuit of the combined circuit consists of a combined circuit or a coupling circuit, or other circuits that realize the combined or coupling function, and meets the corresponding power capacity requirements of the corresponding distorted signal in the above-mentioned circuits, and does not generate new distortion.

[0211] The beneficial effect of this embodiment 5 is that, when the linear ACPR value of the Class C main power signal with linear gain expansion of the main power signal reaches 40-45 dBc or higher in the main circuit of the branch similar input combining and input cancelling, and when the time delay, amplitude, and phase at the output cancellation synchronization power point in the main circuit of the branch similar input combining and input cancelling are equal or nearly equal, equal or nearly equal, and opposite or nearly opposite, the distortion signal with output anti-phase similar cancellation characteristics generated by the branch similar output cancellation circuit is similar to the distortion signal in the Class C main power signal with linear gain expansion of the main power signal output by the main circuit of the branch similar input combining and input cancelling that is greater than the output cancellation synchronization power point. Therefore, at the output of the main circuit of the branch similar input combining and output cancelling, the distortion signal generated by the branch similar output cancellation circuit has output anti-phase similar cancellation characteristics. The distortion signal produced by the phase-inverse synchronous cancellation is canceled out. The distortion signal in the Class C main power signal with a gain linearly extended by the main power signal output by the main circuit of the main circuit with similar input cancellation and input cancellation is also canceled out. The main power signal generated by the branch similar output cancellation circuit has a compensation characteristic with the Class C main power signal with a gain linearly extended by the main power signal of the main circuit of the branch similar input cancellation and input cancellation. The gain linearity of the Class C main power signal output is extended to a smaller range of output main power. Within the further extended gain linearity range, the EVM value and gain fluctuation are improved. The linear ACPR value of the Class C main power signal output by the main circuit of the branch similar input cancellation and branch output cancellation is increased to above 50-55dBC, and the overall efficiency is improved.

[0212] Specifically, the degree of similarity and synchronization accuracy between the distorted signal generated by the branch similar output cancellation circuit with the distorted signal having output anti-phase similarity cancellation characteristics and the distorted signal in the Class C main power signal whose gain is linearly extended by the main power signal output by the main circuit of the branch similar input combining and input cancellation is greater than the output cancellation synchronization power point are determined. This determines the effect of reverse similarity cancellation between the distorted signal with output anti-phase synchronization cancellation generated by the branch similar output cancellation circuit and the distorted signal in the Class C main power signal whose gain is linearly extended by the main circuit of ...

[0213] Example 6

[0214] As shown in Figure 6, the specific implementation of Embodiment 6 of this disclosure is as follows:

[0215] A power amplifier circuit with similar combining and cancellation is provided. It consists of a combining digital input shunt circuit and a combining output coupling circuit, and two circuits, whose digital input terminals and output terminals are connected in parallel: a combining main circuit for branch similar input combining and input cancellation and a branch similar output cancellation circuit. This circuit forms a power amplifier circuit with the function of combining main circuit for branch similar input combining and branch output cancellation.

[0216] In the main circuit of the branch similar input combining and input cancellation in the power amplifier circuit of the aforementioned similar combining and cancellation circuit, the output terminal of the series circuit of the main signal branch similar input combining and input cancellation is connected to the main power amplifier circuit to form the main circuit of the branch similar input combining and input cancellation circuit.

[0217] The series circuit for the main signal branch similar input combining and input cancellation is composed of the input terminal of the analog-digital distortion circuit of the branch similar input combining circuit and the output terminal of the digital pre-distortion circuit of the branch similar input cancellation circuit, connected in series. The output terminal of the analog-digital distortion circuit of the branch similar input combining circuit and the digital input terminal of the digital pre-distortion circuit of the branch similar input cancellation circuit are the corresponding output and digital input terminals of the series circuit for the main signal branch similar input combining and input cancellation.

[0218] The analog-digital distortion circuit of the branch similar input combiner is composed of an analog-digital predistortion circuit that generates an input in-phase compensation distortion signal and has the characteristic of extending the gain linear dynamic range of the main power signal with a gain less than the synchronous power point of the input combiner to a smaller output power signal. This circuit generates an input in-phase compensation distortion signal and has the characteristic of extending the gain linear dynamic range of the main power signal with a gain less than the synchronous power point of the input combiner to a smaller output power signal. The output of the digital-to-analog converter of the input combiner is connected to the input of the analog power amplifier circuit of the low-power input combiner. The feedback input of the analog-digital predistortion circuit is connected to the feedback output of the input combiner coupling feedback adjustment circuit installed at the output of the main power amplifier circuit, forming a main signal and branch similar input combiner combined circuit with the analog-digital distortion circuit of the branch similar input combiner function.

[0219] The digital predistortion circuit for branch similar input cancellation is composed of a digital predistortion circuit that generates an input inverse similarity cancellation distortion signal, and a digital predistortion circuit that generates an input inverse similarity cancellation distortion signal. This digital predistortion circuit generates a Class C main power signal with a gain linear dynamic range extension greater than the input cancellation synchronization power point, which is similar to the distortion signal of the main power signal of the main circuit combining the branch similar input and the main signal. The output of the input cancellation digital-to-analog converter is connected to the input of a low-power input cancellation analog power amplifier circuit. The feedback input of the digital predistortion circuit is connected to the feedback output of the input cancellation coupling feedback adjustment circuit installed at the output of the main power amplifier circuit, forming a main signal and branch similar input cancellation combined circuit with the function of the digital predistortion circuit for branch similar input cancellation.

[0220] The input cancellation coupling feedback adjustment circuit is connected to the feedback signal adjustment power amplifier circuit by the coupling output terminal of the input cancellation feedback coupling circuit. The feedback signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected to the feedback signal power amplifier circuit, or is composed of an amplitude modulation circuit.

[0221] The input combining feedback adjustment circuit is connected to the feedback signal adjustment power amplifier circuit by the coupling output terminal of the input combining feedback coupling circuit. The feedback signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected to the feedback signal power amplifier circuit, or is composed of an amplitude modulation circuit.

[0222] The main power amplifier circuit is a Class C main power amplifier circuit, which consists of a single power amplifier circuit or multiple power amplifier circuits combined through a combining circuit or an impedance transformation network. The main power amplifier circuit can be a single-stage or multi-stage power amplifier circuit.

[0223] In the power amplifier circuit of the similar combining and canceling circuit described above, in the main circuit of the combining circuit of branch similar input combining and canceling and branch output canceling, the branch similar output canceling circuit is characterized as follows: the signal extraction circuit of the digital distortion of the branch similar output canceling is formed by connecting the output terminal of the digital distortion circuit of the branch similar output canceling to the main path input terminal of the output canceling coupled output load circuit, and the output canceling main signal adjustment power amplifier circuit. Through the output canceling digital input split circuit and the output canceling distortion output combining circuit, one analog input terminal and one digital input terminal of the two circuits and the analog output terminal of the two circuits are connected in parallel to form the distortion extraction circuit of the digital distortion of the branch similar output canceling. The output terminal of the distortion extraction circuit of the digital distortion of the branch similar output canceling is connected to the input terminal of the output canceling distortion adjustment power amplifier circuit, thus forming a branch similar output canceling circuit with the function of distortion extraction and adjustment amplifier circuit of the digital distortion of the branch similar output canceling.

[0224] The output-cancelling coupled output load circuit consists of the main path output terminal of the output-cancelling load coupling circuit connected to the ungrounded end of the output-cancelling load resistor. The main path input terminal and coupled output terminal of the output-cancelling load coupling circuit are the main path input terminal and output terminal of the output-cancelling coupled output load circuit, respectively. The output terminal of the output-cancelling coupled output load circuit is the output terminal of the signal extraction circuit for digital distortion caused by branch-like output cancellation.

[0225] The branch similar output cancellation digital distortion circuit is composed of a digital distortion circuit with an output inverted similar cancellation distortion signal, and the output terminal of the output cancellation digital-to-analog converter circuit is connected to the input terminal of a low-power output cancellation analog power amplifier circuit. The feedback input terminal of the digital distortion circuit is connected to the feedback output terminal of the output cancellation coupling feedback adjustment circuit installed at the output terminal of the branch similar input combining cancellation and branch output cancellation main circuit, thus forming the branch similar output cancellation digital distortion circuit.

[0226] Among them, the combined digital input splitter circuit and the output cancellation digital input splitter circuit are composed of digital splitter circuits and meet the requirements of digital signals. Both output terminals are digital terminals, or one of them is a digital signal output terminal and the other digital output terminal is an analog output terminal connected to the output terminal of the digital-to-analog converter circuit. They respectively meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits.

[0227] The output distortion cancellation output combining circuit consists of a combining circuit or a coupling circuit, or other circuits that perform the combining function, and satisfies the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits mentioned above.

[0228] The output cancellation coupling feedback adjustment circuit is connected to the feedback signal adjustment power amplifier circuit by the coupling output terminal of the output cancellation feedback coupling circuit. The feedback signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected to the feedback signal power amplifier circuit, or is composed of an amplitude modulation circuit.

[0229] The main signal adjustment power amplifier circuit for output cancellation is composed of an amplitude modulation circuit connected in series with a phase modulation adjustment circuit connected in series with the main signal power amplifier circuit. It meets the requirements of the main signal power capacity in the corresponding circuit above, and does not generate new distortion.

[0230] The output distortion adjustment power amplifier circuit is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, and then connecting the distortion signal power amplifier circuit in series. It meets the corresponding power capacity requirements of the distortion signal in the above circuits and does not generate new distortion.

[0231] Among them, the output coupling circuit of the combined circuit consists of a combined circuit or a coupling circuit, or other circuits that realize the combined or coupling function, and meets the corresponding power capacity requirements of the corresponding distorted signal in the above-mentioned circuits, and does not generate new distortion.

[0232] The beneficial effect of this embodiment 6 is that when the combined main circuit of the branch similar input combining circuit and the input cancellation circuit reaches a linear ACPR value of 40-45 dBc or higher for the Class C main power signal with a linear dynamic range expansion of the gain of the main power signal, and when the time delay, amplitude, and phase at the output cancellation synchronization power point in the combined main circuit of the branch similar input combining circuit cancellation and the branch output cancellation are equal or nearly equal, equal or nearly equal, and opposite or nearly opposite, the distortion signal with output anti-phase similar cancellation characteristics generated by the branch similar output cancellation circuit is similar to the distortion signal in the Class C main power signal with a linear dynamic range expansion of the gain of the main power signal output by the combined main circuit of the branch similar input combining circuit cancellation and the input cancellation circuit, which is greater than the output cancellation synchronization power point. Therefore, at the output of the combined main circuit of the branch similar input combining circuit cancellation and the branch output cancellation circuit, the output anti-phase synchronous cancellation generated by the branch similar output cancellation circuit is realized. The distortion signal is compensated by the main power signal generated by the branch similar output cancellation circuit and the main power signal of the branch similar input cancellation circuit. The gain linear dynamic range of the main power signal output by the main power signal of the branch similar input cancellation circuit is extended to the Class C main power signal with the gain linear dynamic range of the main power signal of the branch similar input cancellation circuit. The gain linearity of the main power signal is extended to the Class C main power signal, and further extended to a smaller output main power range. Within the further extended gain linear dynamic range, the EVM value and gain fluctuation are improved, and the linear ACPR value of the main power signal output by the branch similar input cancellation and branch output cancellation circuit is increased to above 50-55dBC, thereby improving the overall efficiency.

[0233] Specifically, the degree of similarity and synchronization accuracy between the distorted signal generated by the branch similar output cancellation circuit with the distorted signal having output anti-phase similarity cancellation characteristics and the distorted signal in the Class C main power signal whose gain is linearly extended by the main power signal output by the main circuit of the branch similar input combining and input cancellation is greater than the output cancellation synchronization power point are determined. This determines the effect of reverse similarity cancellation between the distorted signal with output anti-phase synchronization cancellation generated by the branch similar output cancellation circuit and the distorted signal in the Class C main power signal whose gain is linearly extended by the main circuit of ...

[0234] Example 7

[0235] As shown in Figure 7, the specific implementation of Embodiment 7 of this disclosure is as follows:

[0236] A power amplifier circuit with similar input combining and cancellation is provided. The main power output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar input combining and input cancellation is connected to the main power input terminal of the main circuit feedforward output cancellation circuit. The distortion output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar input combining and input cancellation is connected to the distortion input terminal of the main circuit feedforward output cancellation circuit. This forms a power amplifier circuit with similar input combining cancellation of branch similar input combining and main circuit and feedforward output cancellation in series.

[0237] In the circuit of the similar input combining and canceling power amplifier circuit of the above-mentioned power amplifier circuit, the feedforward distortion extraction circuit of the similar input combining and canceling main circuit of the branch similar input combining and input canceling main circuit is characterized by: connecting the main path input terminal of the main path feedforward input coupling circuit to the output terminal of the similar input combining and input canceling main circuit of the branch similar input combining and input canceling main circuit to form the feedforward signal extraction circuit of the similar input combining and input canceling main circuit. The coupling output terminal of the main path feedforward input coupling circuit is the output terminal of the feedforward signal extraction circuit of the similar input combining and input canceling main circuit of the branch similar input combining and input canceling main circuit. It is connected to the input terminal or another output terminal of the feedforward input branch circuit connected to the input terminal of the feedforward main signal adjustment power amplifier circuit and the feedforward main signal adjustment power amplifier circuit. The feedforward distortion output combining circuit is connected in parallel to the output terminals of the two circuits to form the feedforward distortion extraction circuit of the similar input combining and input canceling main circuit of the branch similar input combining and input canceling main circuit. Among them, the input terminal of the feedforward input branch circuit, the main path output terminal of the main path feedforward input coupling circuit, and the output terminal of the feedforward distortion output combining circuit are respectively the main signal input terminal, main power output terminal, and distortion output terminal of the feedforward distortion extraction circuit of the main path circuit of the branch similar input combining circuit and input cancellation combining circuit.

[0238] In the aforementioned power amplifier circuit with similar input combining and canceling branches, where the main circuit and feedforward output canceling are connected in series, the feedforward distortion extraction circuit of the main circuit of the similar input combining and canceling branches is characterized by: connecting the output terminal of the main circuit of the main circuit feedforward input coupling circuit to the main circuit output terminal of the similar input combining and canceling branches, thus forming a feedforward signal extraction circuit of the main circuit of the similar input combining and canceling branches, and a power amplifier circuit for adjusting the main signal of the feedforward main circuit. The input terminal of the feedforward main signal adjustment power amplifier circuit is connected to the input terminal or another output terminal of the feedforward input branch circuit. It is installed in the input combining or input cancelling main signal adjustment power amplifier circuit. It is connected in parallel to the analog input terminal of the two circuits or one digital input terminal and one analog input terminal and the output terminal of the two circuits through the feedforward input branch circuit or feedforward digital input branch circuit and feedforward distortion output combining circuit, forming the feedforward distortion extraction circuit of the combined main circuit of the branch similar input combining and input cancelling. The coupling output of the main feedforward input coupling circuit is the output of the feedforward signal extraction circuit of the main circuit combining branch similar inputs and input cancellation. The analog input of the feedforward input branch circuit or the digital input of the feedforward digital input branch circuit, the main path output of the main feedforward input coupling circuit, and the output of the feedforward distortion output combining circuit are respectively the analog or digital input, main power output, and distortion output of the feedforward distortion extraction circuit of the main circuit combining branch similar inputs and input cancellation.

[0239] In the aforementioned power amplifier circuit with similar input combining and canceling, the main circuit and feedforward output canceling are connected in series. The main feedforward output canceling circuit is composed of a feedforward main circuit delay circuit whose main input terminal is connected to the output terminal of the feedforward canceling coupling circuit, and a feedforward distortion adjustment power amplifier circuit whose coupling input terminal is connected to the output terminal of the feedforward distortion adjustment power amplifier circuit. The input terminal of the feedforward main circuit delay circuit is the main power input terminal of the main feedforward output canceling circuit, and the input terminal of the feedforward distortion adjustment power amplifier circuit is the distortion input terminal of the main feedforward output canceling circuit. The output terminal of the feedforward canceling coupling circuit is the output terminal of the main feedforward output canceling circuit.

[0240] In the series circuit of branch similar input combining cancellation and feedforward output cancellation, the main path input terminal of the main path feedforward input coupling circuit, through the feedforward main path delay circuit and the feedforward distortion adjustment power amplifier circuit connected through the output terminal of the feedforward distortion output combining circuit, to the output terminal of the feedforward cancellation coupling circuit, forms the combining feedforward cancellation circuit from the input terminal of the main path feedforward input coupling circuit to the output terminal of the feedforward cancellation coupling circuit.

[0241] The main circuit of the branch similar input combining circuit and the input cancellation circuit is composed of a parallel input shunt circuit, a parallel output combining circuit, and two analog input terminals and two output terminals of the distortion extraction and adjustment amplifier circuit of the main signal and the branch similar input combining circuit and the branch similar input cancellation analog digital predistortion circuit connected in parallel. Then, it is connected in series to the input terminal of the main power amplifier circuit. The input terminal of the parallel input shunt circuit and the output terminal of the main power amplifier circuit are the corresponding input and output terminals of the branch similar input combining circuit and the input cancellation main circuit, respectively.

[0242] The analog distortion combining circuit of the main signal and the similar input circuit of the branch is formed by connecting the input circuit into the input branch circuit, the input circuit into the input branch circuit, the input circuit into the output circuit, the distortion extraction, adjustment and amplification circuit of the similar input circuit of the branch circuit, and the input and output terminals of the input circuit main signal delay adjustment circuit in parallel.

[0243] Specifically, a branch-like input combining circuit is formed by connecting the output of the analog distortion circuit of the branch-like input combining circuit to the main path input of the coupled output load circuit of the input combining circuit or the input of the amplitude modulation attenuation circuit of the input combining circuit. This circuit, along with the main signal adjustment power amplifier circuit of the input combining circuit, is connected in parallel to the input and output of the corresponding two circuits via the input shunting circuit and the distortion output combining circuit of the input combining circuit. The output of the branch-like input combining circuit is then connected to the input of the distortion adjustment power amplifier circuit of the input combining circuit, thus forming a branch-like input combining circuit with the function of a distortion extraction and adjustment amplifier circuit for analog distortion of the branch-like input combining circuit.

[0244] The input combining and input splitting circuits consist of splitting circuits, coupling circuits, or other circuits that implement splitting functions, and respectively meet the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits mentioned above.

[0245] The input combining distortion output combining circuit consists of a combining circuit or a coupling circuit, or other circuits that realize the combining function, and respectively meets the power capacity requirements of the corresponding circuits and the requirement of not generating new distortion.

[0246] The input combining main signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected in series with a phase modulation adjustment circuit connected in series with the main signal power amplifier circuit. It meets the main signal power capacity requirements of the corresponding circuits above and does not generate new distortion.

[0247] The input combining distortion adjustment power amplifier circuit is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, and then connecting the distortion signal power amplifier circuit in series. It meets the corresponding power capacity requirements of the distortion signal in the above circuits and does not generate new distortion.

[0248] The input combining main signal delay adjustment circuit is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, or an adjustment circuit formed by an amplitude modulation circuit connected in series with a main signal delay circuit, and meets the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above.

[0249] The input combining coupled output load circuit consists of the main path output terminal of the input combining load coupling circuit connected to the ungrounded end of the input combining load resistor. The main path input terminal and coupled output terminal of the input combining load coupling circuit are respectively the main path input terminal and output terminal of the coupled output load circuit of the branch input combining circuit. The output terminal of the coupled output load circuit of the branch input combining circuit is the output terminal of the analog distortion signal extraction circuit of the similar input combining circuit of the branch.

[0250] Among them, the analog distortion circuit of the branch similar input combiner, formed by the low-power branch power amplifier circuit or the branch feedforward power amplifier circuit, has the function of generating the distortion signal of the input in-phase combiner compensation.

[0251] The main power amplifier circuit is a Class C main power amplifier circuit, which consists of a single power amplifier circuit or multiple power amplifier circuits combined through a combining circuit or an impedance transformation network. The main power amplifier circuit can be a single-stage or multi-stage power amplifier circuit.

[0252] Specifically, a signal extraction circuit for analog-digital predistortion with branch-like input cancellation is formed by connecting the output of the analog-digital predistortion circuit with branch-like input cancellation to the input of the attenuation adjustment circuit with input cancellation. This circuit, along with the main signal adjustment power amplifier circuit with input cancellation, is connected in parallel to the corresponding two circuit inputs and two circuit outputs. The output of the distortion extraction circuit for analog-digital predistortion with branch-like input cancellation is then connected to the input of the distortion adjustment power amplifier circuit with input cancellation. This forms a branch-like input combining circuit with the distortion extraction and adjustment amplifier circuit function of analog-digital predistortion with branch-like input cancellation.

[0253] The input shunt circuit for input cancellation consists of a shunt circuit, a coupling circuit, or other circuits that implement the shunt function, and satisfies the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits mentioned above.

[0254] The input-cancelled distortion-output combining circuit consists of a combining circuit or a coupling circuit, or other circuits that perform the combining function, and satisfies the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits mentioned above.

[0255] The input cancellation coupling feedback adjustment circuit is connected to the feedback signal adjustment power amplifier circuit by the coupling output terminal of the feedback coupling circuit. The feedback signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected to the feedback signal power amplifier circuit, or is composed of an amplitude modulation circuit.

[0256] The analog-digital predistortion circuit with branch similar input cancellation is composed of an analog-to-digital converter circuit whose output is connected to the input of a low-power analog power amplifier circuit. The feedback input of the analog-digital predistortion circuit is connected to the feedback output of the input cancellation coupling feedback adjustment circuit installed at the output of the main power amplifier circuit.

[0257] The input cancellation attenuation adjustment circuit is composed of an adjustable analog or digital attenuator, and respectively meets the power capacity requirements of the corresponding circuits above and the requirement of not generating new distortion.

[0258] The input cancellation main signal adjustment power amplifier circuit is composed of an amplitude modulation circuit connected in series with a phase modulation adjustment circuit connected in series with the main signal power amplifier circuit. It meets the main signal power capacity requirements of the corresponding circuits above and does not generate new distortion.

[0259] The distortion adjustment power amplifier circuit for input cancellation is composed of an adjustment circuit formed by connecting an amplitude modulation circuit in series with a phase modulation circuit, and then connecting the distortion signal power amplifier circuit in series. It meets the corresponding power capacity requirements of the distortion signal in the above-mentioned circuits and does not generate new distortion.

[0260] The similar input combining and canceling power amplifier circuit described above exhibits the following cancellation characteristics at the output of the similar input combining canceling main circuit and the feedforward output canceling series circuit: When the main power signal gain linearly expands to a Class C main power linear ACPR of 40-45 dBc or higher in the main power combining main circuit with the similar input combining and input canceling, under the conditions that the time delay, amplitude, and phase at the feedforward canceling synchronous power point are equal or nearly equal, and opposite or nearly opposite, the main power signal with linearly expanded gain is extracted from the main power signal output by the feedforward distortion extraction circuit of the main power combining and input canceling main circuit. The distortion signal is eliminated by combining the feedforward cancellation circuit at the input of the main circuit and the output of the feedforward cancellation circuit. This achieves linear expansion of the gain of the main power signal output by the main circuit of the main circuit with similar inputs of the branch and input cancellation, cancelling the distortion signal of the same type in the Class C main power signal, and further expanding the gain linear expansion of the main power signal to achieve the gain linearity of the Class C output main power signal to the Class AB output main power signal. Within the already expanded gain linear dynamic range, the EVM value and gain fluctuation are improved, and the linear ACPR value of the Class AB main power signal output by the circuit of the main circuit with similar inputs of the branch and feedforward cancellation in series is increased to above 50-55dBC, thereby improving the overall efficiency.

[0261] Among them, the similarity between the distortion signal extracted by the feedforward distortion extraction circuit of the branch similar input combiner and the input cancelling combiner main circuit and the distortion signal in the C-type main power signal whose gain is linearly extended by the output main power signal of the branch similar input combiner and the input cancelling combiner main circuit, as well as the synchronization accuracy, determines the effect of reverse similarity cancellation of the distortion signal of the same type in the C-type main power signal whose gain is linearly extended by the output main power signal of the branch similar input combiner and the input cancelling combiner main circuit.

[0262] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A power amplifier circuit with similar input combining and canceling, wherein the output terminal of a parallel circuit of similar input combining and input canceling of the main signal branch or a series circuit of similar input combining and input canceling of the main signal branch is connected to a main power amplifier circuit, forming a power amplifier circuit with similar input combining and input canceling of the branch main circuit, wherein, The output terminal of the main signal and the branch similar input combiner and input cancellation parallel circuit or the main signal and branch similar input combiner and input cancellation series circuit is connected to the input terminal of the main power amplifier circuit to form the main circuit of the branch similar input combiner and the main signal. In the main circuit of the similar input combining circuit and input cancellation combining circuit of the power amplifier circuit described above, the parallel circuit of the main signal branch similar input combining circuit and input cancellation is formed by connecting the main signal and the branch similar input combining circuit in parallel through a parallel input shunting circuit or a parallel digital input shunting circuit and a parallel output combining circuit, and the analog input terminal of the two circuits of the branch similar input cancellation circuit, or one analog input terminal and one digital input terminal of the two circuits, or the digital input terminal and the output terminal of the two circuits; or by connecting the main signal and the branch similar input cancellation circuit in parallel through a parallel input shunting circuit or a parallel digital input shunting circuit and a parallel output combining circuit, and the two circuits of the branch similar input combining circuit in parallel. The circuit consists of an analog input terminal or one analog input terminal and one digital input terminal in a two-way circuit, or the digital input terminal and the output terminal of a two-way circuit; or it consists of an analog input terminal and one digital input terminal and the output terminal of a two-way circuit, or a parallel circuit for combining similar inputs and canceling inputs, connected in parallel with the input terminal of the main signal delay adjustment circuit for the corresponding input combining or input canceling; wherein the input terminal of the parallel input shunt circuit or the digital input terminal of the parallel digital input shunt circuit, and the output terminal of the parallel output combining circuit are the corresponding input terminals or digital input terminals and output terminals of the parallel circuit for combining similar inputs and canceling inputs in the main signal branch; In the main circuit of the similar input combining and input cancellation power amplifier circuit, the main signal branch similar input combining and input cancellation series circuit is composed of a main signal and branch similar input combining circuit and a main signal and branch similar input cancellation circuit connected in series; wherein the input terminal and output terminal of the main signal and branch similar input canceling circuit, or the input terminal of the branch similar input combining circuit and the output terminal of the branch similar input cancellation circuit, are the corresponding input terminal and output terminal of the main signal branch similar input combining and input cancellation series circuit; Among them, in the parallel circuit of similar input combining and input cancellation of the main signal branch, there can only be one main signal delay adjustment circuit with input combining or input cancellation. In addition, in the combined circuit of the main signal and similar input combining of the branch or the combined circuit of the main signal and similar input cancellation of the branch, there can only be one main signal delay adjustment circuit with input combining or input cancellation. In the circuit where the main signal and the branch similar inputs are combined or the main signal and the branch similar inputs are canceled, the input branch circuit or the branch main cancellation circuit or the branch main cancellation circuit, and the output circuit of the branch main cancellation circuit are connected in parallel to the input terminals of the two circuits of the main signal delay adjustment circuit with the corresponding input combination or input cancellation circuit, or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits, to form the circuit where the main signal and the branch similar inputs are combined or the main signal and the branch similar inputs are canceled. Or, the combined circuit of similar input combining and input cancellation of the combined branch, through the input branch circuit of the main branch or the input branch circuit of the main branch cancellation, or through the digital input branch circuit of the main branch or the output circuit of the main branch cancellation, and the input terminal of the two circuits or the digital input terminal of the two circuits or one analog input terminal and one digital input terminal and the output terminal of the two circuits are connected in parallel to form the combined circuit of similar input combining and input cancellation of the combined branch; The branch-similar input combiner circuit is configured to output a distorted signal with input in-phase combiner compensation, and to extend the gain linear dynamic range of the main power signal with a smaller output main power signal to compensate for the main power signal with a smaller input combiner synchronous power point in the Class C main power amplifier circuit output. A branch similar input cancellation circuit is configured to output a predistorted signal with input anti-phase similar cancellation, and to have similarity characteristics with the main power signal of the branch similar input combining circuit and the main signal combining circuit of the main power signal, and the C-class main power signal with a gain linear dynamic range extension greater than the input cancellation synchronization power point. The characteristics of input combining and input cancellation at the output of the main circuit in the branch similar input combining and input cancellation combining circuits are as follows: At the input combining synchronization power point in the main circuit where the branch similar input combining circuit and the main signal are combined, and at the input cancellation synchronization power point in the main circuit where the branch similar input combining circuit and the input cancellation circuit are combined, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delays are equal or nearly equal, and the amplitudes are equal or nearly equal, the phases of the two circuits in the main circuit where the branch similar input combining circuit and the main signal are combined are within the range of 0 degrees to 45 degrees, and the phases of the two circuits in the main circuit where the branch similar input combining circuit and the input cancellation circuit are opposite or adjacent. Conversely, in the parallel circuit of the main signal branch similar input combining and input cancellation or the series circuit of the main signal branch similar input combining and input cancellation that meet the above conditions, the distortion signal with input in-phase combining compensation output by the branch similar input combining circuit and the pre-distortion signal with input out-of-phase similar cancellation output by the branch similar input cancellation circuit generate a combined cancellation composite distortion signal at the output terminal of the parallel circuit of the main signal branch similar input combining and input cancellation or the series circuit of the main signal branch similar input combining and input cancellation. Among them, in the combined distortion signal cancellation, the distortion signal generated by the branch similar input combiner circuit and compensated by the input in-phase combiner has a gain linear dynamic range that extends to compensate for the main power signal of the Class C main power signal output from the Class C main power amplifier circuit that is smaller than the input combiner synchronization power point, and has a smaller output main power. When the characteristics of the signal are such that, at the output of the main circuit of the branch similar input combiner and the main signal combiner in the branch similar input combiner and the input cancelling combiner main circuit, the time delay is equal, the amplitude is equal or nearly equal, and the phase of the two circuits is within the range of 0 degrees to 45 degrees, the gain linear dynamic range compensation of the distortion signal with in-phase combiner compensation generated by the branch similar input combiner circuit and the main power signal of Class C output of Class C main power amplifier circuit that is smaller than the input combiner synchronous power point is extended to a smaller output main power signal, and the gain linear dynamic range of the already extended smaller output main power signal is improved to improve the EVM value and gain fluctuation, and the linear ACPR value of the Class C main power signal of the main power signal of the branch similar input combiner and the main signal combiner main circuit is increased to 30 to 35 dBc or more. Specifically, when the output of the main circuit combining the branch-similar input combiner and the main signal reaches a linear ACPR value of 30-35 dBc or higher (Class C, with linear dynamic range extension of gain for the main power signal), the pre-distortion signal generated by the branch-similar input cancelling circuit in the combined distortion signal exhibits similarity characteristics to the distortion signal greater than the input cancelling synchronization power point in the Class C main power signal of the main power signal combining the branch-similar input combiner and the main signal (Class C, with linear dynamic range extension of gain for the main power signal). At the output of the main circuit combining the branch-similar input combiner and the input cancelling circuit, when the time delay, amplitude, and phase at the input cancelling synchronization power point are equal or nearly equal, and nearly equal or nearly equal, and nearly opposite, the pre-distortion signal with anti-phase similarity cancellation generated by the branch-similar input cancelling circuit achieves anti-phase similarity cancellation with the distortion signal greater than the input cancelling synchronization power point in the Class C main power signal of the main power signal combining the branch-similar input combiner and the main signal (Class C, with linear dynamic range extension of gain for the main power signal). This technology aims to: 1) improve the linear ACPR value of the main power signal output from the main circuit of the branch-similar input combining and input cancellation main circuit to 40–45 dBc or higher; 2) achieve anti-phase similarity cancellation between the pre-distortion signal with anti-phase similarity cancellation generated by the branch-similar input cancellation circuit and the distortion signal greater than the input cancellation synchronization power point in the main power signal of the main circuit of the branch-similar input combining and main signal main circuit, and achieve further expansion of the gain linear dynamic range of the output main power signal to a smaller output main power signal; 3) improve the EVM value and gain fluctuation within the already expanded smaller output main power signal gain linear dynamic range; and 4) improve the overall efficiency of the power amplifier circuit with similar combining and cancellation. Alternatively, by using a combining input shunting circuit or a combining digital input shunting circuit, and a combining output coupling circuit, the analog input terminals or digital input terminals of the two circuits, or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits, can be connected in parallel to form a similar combining and canceling power amplifier circuit with the function of combining main circuit with branch similar input canceling and branch output canceling; Among them, in the main circuit of the branch similar input combining cancellation and branch output cancellation, there can only be one main signal delay adjustment circuit with input combining or input cancellation. Among them, the branch similar output cancellation circuit generates a distortion signal with output anti-phase similar cancellation at the output end, and has similar characteristics to the distortion signal in the Class C main power signal of the branch similar input combination and input cancellation main circuit whose gain linear dynamic range is extended to the output cancellation synchronous power point. The output cancellation characteristic at the output terminal of the main circuit of the combined circuit, where branch similar input cancelling and branch output cancelling are combined, is as follows: When the output circuit of the main circuit combining branch similar input cancelling circuit and input cancelling circuit achieves a linear ACPR value of 40-45 dBc or higher for the Class C main power signal with a linear dynamic range extension of the main power signal gain, and when the time delay, amplitude, and phase are equal or nearly equal, or opposite or nearly opposite at the output cancellation synchronization power point in the main circuit combining branch similar input cancelling circuit and branch output cancelling circuit, the distorted signal generated by the branch similar output cancelling circuit with output anti-phase similar cancellation characteristics is combined with the branch similar input cancelling circuit. The gain of the main power signal output by the main circuit of the branch similar input cancelling and the branch output cancelling is similar to the distortion signal in the Class C main power signal with a linear dynamic range extension of the gain of the main power signal output by the main circuit of the branch similar input cancelling and the branch output cancelling. This distortion signal with output inverse synchronous cancellation is achieved at the output of the main circuit of the branch similar input cancelling and the branch output cancelling. This cancels the distortion signal in the Class C main power signal with a linear dynamic range extension of the gain of the main power signal output by the main circuit of the branch similar input cancelling and the branch output cancelling, which is greater than the distortion signal in the output cancelling synchronous power point, thus improving the similar input of the branch. The combined main circuit output of the main power signal, which is further extended by the branch output cancellation, achieves a linear ACPR value of over 50-55 dBc for the Class C main power signal, or achieves the cancellation of the distortion signal with output anti-phase synchronous cancellation generated by the branch similar output cancellation circuit. This cancels the distortion signal in the Class C main power signal with a gain linear dynamic range extension greater than the output cancellation synchronous power point, which is generated by the branch similar output cancellation circuit and cancelled by the branch similar input. The gain linear dynamic range of the main power signal of the circuit extends the reverse compensation characteristics of the Class C main power signal, which has the reverse compensation characteristics. The gain linear dynamic range of the main power signal extends the gain linearity of the Class C output main power signal, further extending it to a smaller output main power range. The gain linear dynamic range of the extended gain improves the EVM value and gain fluctuation, and improves the linear ACPR value of the main power signal output of the combined main circuit of the branch similar input cancelling and branch output cancelling to 50-55dBC or more, and achieves the improvement of the overall efficiency. Alternatively, the main power output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar inputs and input cancellation is connected to the main power input terminal of the main circuit feedforward output cancellation circuit, and the distortion output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar inputs and input cancellation is connected to the distortion input terminal of the main circuit feedforward output cancellation circuit, thus forming a similar combining and cancellation power amplifier circuit with the function of main circuit series main circuit combining branch similar inputs and input cancellation; In the series circuit of branch similar input combining cancellation and feedforward output cancellation, the input terminal of the main path of the main path feedforward input coupling circuit, the feedforward distortion adjustment power amplifier circuit connected to the output terminal of the feedforward main path delay circuit and the feedforward distortion output combining circuit, and the output terminal of the feedforward cancellation coupling circuit form the main path feedforward combining cancellation circuit from the input terminal of the main path feedforward input coupling circuit to the output terminal of the feedforward cancellation coupling circuit. The same type of cancellation characteristic at the output of the branch similar input combining cancellation main circuit and the feedforward output cancellation series circuit is as follows: When the output of the branch similar input combining and input cancellation main circuit reaches a Class C main power linear ACPR of 40-45 dBC or higher, at the output of the branch similar input combining cancellation main circuit and the feedforward output cancellation series circuit, under the conditions that the time delay, amplitude, and phase at the feedforward cancellation synchronization power point are equal or nearly equal, equal or nearly equal, and nearly opposite, the distortion signal in the Class C main power signal with the gain linear dynamic range extended by the main power signal output by the branch similar input combining and input cancellation main circuit is extracted by the distortion output of the feedforward distortion extraction circuit of the branch similar input combining and input cancellation main circuit. The distortion signal in the extended Class C main power signal is of the same type. At the output of the main path feedforward combining cancellation circuit, when the time delay, amplitude, and phase at the feedforward cancellation synchronization power point are equal or nearly equal, the linear dynamic range of the gain of the main power signal output by the branch similar input combining circuit and the input cancellation circuit of the main path circuit are equal or nearly equal, the distortion signal of the same type in the extended Class C main power signal is canceled, and the linear dynamic range of the gain of the main power signal is further extended to the Class C output main power signal, reaching the linear dynamic range of the gain of the Class AB output main power. Within the extended linear dynamic range of the gain, the EVM value and gain fluctuation are improved, and the Class C bus linear dynamic range of the Class AB main power signal output by the circuit of the branch similar input combining cancellation main path and the feedforward output cancellation series circuit is improved, reaching the linear ACPR value of the Class AB output power signal to above 50-55dBC, and the overall efficiency is improved.

2. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, The output terminal of the parallel circuit of the main signal branch similar input combining and input cancellation or the series circuit of the main signal branch similar input combining and input cancellation is connected to the main power amplifier circuit to form a similar combining and canceling power amplifier circuit with the function of a main circuit combining branch similar input combining and input cancellation. The output terminal of the circuit combining the main signal and the branch similar input combining in the parallel circuit of the main signal branch similar input combining and input cancellation or the series circuit of the main signal branch similar input combining and input cancellation is connected to the input terminal of the main power amplifier circuit to form a main circuit combining branch similar input combining and main signal. Among them, the branch similar input combiner circuit is configured to output a distortion signal with input in-phase combiner compensation, and has the characteristic of extending the gain linear dynamic range of the main power signal in the Class C main power signal output by the compensated Class C main power amplifier circuit that is smaller than the input combiner synchronous power point to have a smaller output main power signal. Among them, the branch similar input cancellation circuit is configured to output a predistorted signal with input anti-phase similar cancellation, and has characteristics similar to the distortion signal in the Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input combining circuit and the main signal combining circuit of the main ... The input combining and input cancellation characteristics at the output of the main circuit of the branch similar input combining and input cancellation are as follows: at the input combining synchronization power point in the main circuit of the branch similar input combining and input cancellation, and at the input cancellation synchronization power point in the main circuit of the branch similar input combining and input cancellation, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delay is equal or nearly equal, the amplitude is equal or nearly equal, the phase of the two circuits in the main circuit of the branch similar input combining and input cancellation is within the range of 0 degrees to 45 degrees, and the phase of the two circuits in the main circuit of the branch similar input combining and input cancellation is within the range of 0 degrees to 45 degrees. When the phases of the main circuits of the input cancellation are opposite or nearly opposite, in the parallel circuit of the main signal branch similar input cancellation and input cancellation or the series circuit of the main signal branch similar input cancellation and input cancellation that meet the above conditions, the distortion signal with input in-phase combination compensation output by the branch similar input cancellation circuit and the pre-distortion signal with input out-of-phase similar cancellation output by the branch similar input cancellation circuit generate a combined cancellation distortion signal at the output of the parallel circuit of the main signal branch similar input cancellation and input cancellation or the series circuit of the main signal branch similar input cancellation and input cancellation. In the combined distortion signal of the collapsible cancellation, the distortion signal generated by the branch similar input combiner circuit and compensated by the input in-phase combiner has the characteristic of expanding the linear dynamic range of the gain of the main power signal output from the Class C main power amplifier circuit that is smaller than the input combiner synchronization power point to a smaller output main power signal. At the output of the branch similar input combiner and the main signal combiner circuit of the input cancelling combiner main circuit, the time delay, amplitude, or near-equal amplitude at the input combiner synchronization power point are equal, and the phase of the two circuits is between 0 degrees and... Within a 45-degree range, the gain linear dynamic range compensation of the distortion signal with in-phase combining compensation generated by the branch similar input combining circuit and the Class C main power signal output by the Class C main power amplifier circuit is extended to a smaller output main power signal with a gain linear dynamic range smaller than the input combining synchronous power point. Within the gain linear dynamic range of the already extended smaller output main power signal, the EVM value and gain fluctuation are improved, and the linear ACPR value of the Class C main power signal with the extended gain linear dynamic range of the branch similar input combining circuit and the main signal combining main circuit is increased to above 30-35dBc. Specifically, when the output of the main circuit combining the branch-similar input combiner and the main signal reaches a linear ACPR value of 30-35 dBc or higher (Class C, with linear dynamic range extension of gain for the main power signal), the pre-distorted signal generated by the branch-similar input cancelling circuit in the combined distortion signal exhibits similarity characteristics to the distortion signal greater than the input cancellation synchronization power point in the Class C, main power signal of the main power signal combining the branch-similar input combiner and the main signal. At the output of the main circuit combining the branch-similar input combiner and the input cancellation, when the time delay, amplitude, and phase at the input cancellation synchronization power point are equal or nearly equal, the pre-distorted signal with inverse similarity cancellation generated by the branch-similar input cancelling circuit and the Class C, main power signal of the main power signal combining the branch-similar input combiner and the main signal exhibit similarity characteristics. The distortion signal in the main power signal that is greater than the input cancellation synchronization power point is anti-phase similarly canceled, thereby increasing the gain of the main power signal output by the main circuit of the branch similar input combiner and the input cancellation main circuit to a linear dynamic range extension of the Class C main power signal, and increasing the linear ACPR value to above 40-45 dBc; or achieving anti-phase similar cancellation of the pre-distortion signal with anti-phase similarity cancellation generated by the branch similar input cancellation circuit and the distortion signal in the Class C main power signal of the main circuit of the branch similar input combiner and the main signal, which is greater than the input cancellation synchronization power point. The system achieves the following: extending the linear dynamic range of the main power signal gain to a Class C output main power signal, further extending it to a smaller output main power signal; improving the EVM value and gain fluctuation within the already extended smaller output main power signal gain linear dynamic range; increasing the linear ACPR value of the Class C main power signal gain linear dynamic range of the combined main circuit of similar input combiners and input cancellers to 40–45 dBc or higher; and improving the overall efficiency of the power amplifier circuit with similar combiners and cancellers.

3. The power amplifier circuit with similar combining and canceling as described in claim 1 or 2, wherein, The main power amplifier circuit in the branch similar input combiner and input cancellation combiner main circuit is a Class C power amplifier circuit, which is composed of a single Class C power amplifier circuit or at least one Class C multi-channel power amplifier circuit combined or combined through an impedance transformation network.

4. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, In the main circuit of the branch similar input combining and input cancellation, the parallel circuit of the main signal branch similar input combining and input cancellation is connected to the main signal and branch similar input combining circuit through the parallel input split circuit or through the parallel digital input split circuit and the parallel output combining circuit. This is then connected to the main signal and branch similar input combining circuit through the parallel circuit of the main signal and branch similar input combining circuit, which is either a distortion extraction, adjustment, and amplification circuit for analog distortion of the main signal and branch similar input combining circuit, or an analog-to-digital distortion circuit for branch similar input combining circuit, or a digital distortion circuit for branch similar input combining circuit. The circuit consists of the analog input terminal of a two-way circuit similar to the branch input cancellation circuit, or one analog input terminal and one digital input terminal of the two-way circuit, or the digital input terminal and the output terminal of the two-way circuit; or it is formed by combining input shunting circuits or digital input shunting circuits and combining output combining circuits, and then connecting them in parallel to form a combined circuit where the main signal cancels out the branch similar inputs, which is a distortion extraction, adjustment and amplification circuit for analog pre-distortion, or a branch similar input cancellation circuit. The circuit comprises a combined circuit for distortion extraction, adjustment, and amplification of the auxiliary circuit of the similar input combiner and the main signal combiner, or an analog-digital predistortion circuit for branch similar input cancellation, or a digital predistortion circuit for branch similar input cancellation, and the analog input terminal of the two circuits of the branch similar input combiner circuit, or one analog input terminal and one digital input terminal of the two circuits, or the digital input terminal and the output terminal of the two circuits; or it is composed of the input terminal of the main signal delay adjustment circuit of the corresponding input combiner or input cancellation, or one analog input terminal and one digital input terminal of the two circuits, and the output terminal of the two circuits, connected in parallel through a parallel input splitter circuit or a parallel digital input splitter circuit and a parallel output combiner circuit; wherein, the input terminal of the parallel input splitter circuit or the digital input terminal of the parallel digital input splitter circuit, and the output terminal of the parallel output combiner circuit are the corresponding input terminal or digital input terminal and output terminal of the parallel circuit of the main signal branch similar input combiner and input cancellation; Among them, in the parallel circuit of similar input combining and input cancellation of the main signal branch, there can only be one main signal delay adjustment circuit with input combining or input cancellation. In addition, in the combined circuit of the main signal and similar input combining of the branch or the combined circuit of the main signal and similar input cancellation of the branch, there can only be one main signal delay adjustment circuit with input combining or input cancellation. The cancellation characteristics of the synthesized distorted signal in the main signal branch similar input combining and input cancellation parallel circuit of the main circuit combining branch similar input combining and input cancellation are as follows: at the input combining synchronization power point in the main circuit combining branch similar input combining and input cancellation, and at the input cancellation synchronization power point in the main circuit combining branch similar input combining and input cancellation, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delay is equal or nearly equal, and the amplitude is equal or nearly equal, at the main circuit combining branch similar input combining and main signal... When the phases of the two circuits in the circuit are within the range of 0 to 45 degrees, and the phases of the main circuit in the similar input combining circuit of the branch and the input cancellation circuit are opposite or nearly opposite, in the parallel circuit of the similar input combining circuit of the main signal branch and the input cancellation circuit that meets the above conditions, the distortion signal with input in-phase combining compensation output by the similar input combining circuit of the branch and the pre-distortion signal with input out-of-phase similar cancellation output by the similar input cancellation circuit of the branch and the output of the similar input cancellation circuit of the branch and the input cancellation circuit generate a combined cancellation composite distortion signal at the output of the parallel circuit of the similar input combining circuit of the main signal branch and the input cancellation circuit. Among them, in the combined distortion signal of the combined circuit cancellation, the distortion signal of the input in-phase combined circuit compensation generated by the branch similar input combined circuit has the characteristic of extending the linear dynamic range of the gain of the main power signal of the Class C main power signal output in the compensated Class C main power amplifier circuit that is smaller than the synchronous power point of the input combined circuit to the output main power signal with a smaller output main power signal. Among them, in the combined distortion signal of the collapsible cancellation, the pre-distortion signal generated by the branch similar input cancellation circuit has the same characteristics as the distortion signal of Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input collapsible and main signal collapsible main circuit, which is greater than the input cancellation synchronization power point.

5. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, In the main circuit of the branch similar input combining and input cancellation, the series circuit of the main signal branch similar input combining and input cancellation is composed of the main signal and the branch similar input combining circuit and the main signal and the branch similar input cancellation circuit connected in series; wherein, the input terminal and the output terminal of the main signal and the branch similar input combining circuit, or the input terminal of the branch similar input combining circuit and the output terminal of the branch similar input cancellation circuit, are the corresponding input terminals and output terminals of the series circuit of the main signal branch similar input combining and input cancellation. The circuit for combining the main signal and the similar input of the branch includes: the main signal and the similar input of the branch The circuit for combining analog distortion extraction and adjustment amplifier circuits of the path, the circuit for analog digital distortion of similar input combined circuits of branches, and the circuit for digital distortion of similar input combined circuits of branches; The combined circuit for canceling the main signal and the similar input of the branch includes: a combined circuit of the distortion extraction, adjustment and amplification circuit of the analog predistortion canceling the main signal and the similar input of the branch, an analog digital predistortion circuit of the similar input of the branch, a digital predistortion circuit of the similar input of the branch, and a combined circuit of the distortion extraction, adjustment and amplification circuit of the auxiliary circuit of the similar input of the branch and the similar input of the main signal canceling the similar input of the branch and the similar input of the branch and the similar input of the main signal; Among them, in the combined circuit of the main signal and the similar input of the branch or the combined circuit of the main signal and the similar input of the branch canceling, there can only be one main signal delay adjustment circuit with input combining or input canceling. The characteristics of the combined distortion signal synthesized by the main signal in the main circuit of the branch similar input combining and input cancellation series circuit are as follows: at the input combining synchronization power point in the main circuit of the branch similar input combining and input cancellation, and at the input cancellation synchronization power point in the main circuit of the branch similar input combining and input cancellation, and when the main power amplifier circuit is a Class C power amplifier circuit, when the time delay is equal or nearly equal, and the amplitude is equal or nearly equal, at the main circuit of the branch similar input combining and main signal... When the phases of the two circuits in the path are within the range of 0 to 45 degrees, and the phases of the main circuit in the similar input combining circuit of the branch and the input cancellation circuit are opposite or nearly opposite, in the series circuit of the similar input combining circuit of the main signal branch and the input cancellation circuit that meets the above conditions, the distortion signal with input in-phase combining compensation output by the similar input combining circuit of the branch and the pre-distortion signal with input out-of-phase similar cancellation output by the similar input cancellation circuit of the branch will generate a combined cancellation composite distortion signal at the output of the series circuit of the similar input combining circuit of the main signal branch and the input cancellation circuit. Among them, in the combined distortion signal of the combined circuit cancellation, the distortion signal of the input in-phase combined circuit compensation generated by the branch similar input combined circuit has the characteristic of extending the linear dynamic range of the gain of the main power signal of the Class C main power signal output in the compensated Class C main power amplifier circuit that is smaller than the synchronous power point of the input combined circuit to the output main power signal with a smaller output main power signal. Among them, in the combined distortion signal of the collapsible cancellation, the pre-distortion signal generated by the branch similar input cancellation circuit has the characteristic of being similar to the distortion signal of the main power signal of Class C main power signal with a gain linear dynamic range extension of the main power signal of the combined main circuit of the branch similar input cancellation circuit and the main signal, which is greater than the input cancellation synchronization power point.

6. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, The main signal and the branch similar input combination circuit are connected in parallel through the input branch circuit or the digital input branch circuit of the branch main circuit, and the output combination circuit of the branch main circuit. The circuit is connected to the analog distortion extraction, adjustment and amplification circuit of the branch similar input combination circuit, or the analog digital distortion extraction, adjustment and amplification circuit of the branch similar input combination circuit, or the digital distortion extraction, adjustment and amplification circuit of the branch similar input combination circuit, and the input terminal of the two circuits of the corresponding input combination main signal delay adjustment circuit, or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits, to form the main signal and the branch similar input combination circuit. Since the analog-digital distortion circuit of the branch similar input combiner or the digital distortion circuit of the branch similar input combiner contains the main signal and the distortion signal, the analog-digital pre-distortion circuit of the branch similar input combiner or the digital distortion circuit of the branch similar input combiner directly forms the combiner circuit of the main signal and the branch similar input combiner. The branch similar input combiner circuit includes: a distortion extraction, adjustment, and amplification circuit for analog distortion of the branch similar input combiner; a distortion extraction, adjustment, and amplification circuit for analog digital distortion of the branch similar input combiner; and a distortion extraction, adjustment, and amplification circuit for digital distortion of the branch similar input combiner. Furthermore, in the combined circuit of the main signal and the similar input of the branch, there can only be one main signal delay adjustment circuit for the input combined circuit.

7. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, The main signal and branch similar input cancellation combined circuit, through the branch main cancellation input branch circuit or through the branch main cancellation digital input branch circuit, and the branch main cancellation output combined circuit, are connected in parallel to the branch similar input cancellation circuit's analog pre-distortion distortion extraction adjustment amplifier circuit, or branch similar input cancellation analog digital pre-distortion distortion extraction adjustment amplifier circuit, or branch similar input cancellation digital pre-distortion distortion extraction adjustment amplifier circuit, or the distortion extraction adjustment amplifier circuit of the branch similar input cancellation branch similar input combined circuit and the main signal combined auxiliary circuit, and the corresponding input cancellation main signal delay adjustment circuit's two circuit input terminals or one analog input terminal and one digital input terminal of the two circuits and the two circuit output terminals, to form the main signal and branch similar input cancellation combined circuit ... The branch similar input cancellation circuit includes: a distortion extraction, adjustment, and amplification circuit for analog predistortion of branch similar input cancellation; a distortion extraction, adjustment, and amplification circuit for analog digital predistortion of branch similar input cancellation; a distortion extraction, adjustment, and amplification circuit for digital predistortion of branch similar input cancellation; and a distortion extraction, adjustment, and amplification circuit for the auxiliary circuit of the branch similar input combiner and the main signal combiner of branch similar input cancellation. Furthermore, in the combined circuit where the main signal and the branch similar inputs cancel each other out, there can only be one main signal delay adjustment circuit with input cancellation.

8. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, The combined circuit of similar input combining and input cancellation of the branch is formed by connecting the input branch circuit of the branch main combining or the branch main cancellation, or by connecting the digital input branch circuit of the branch main combining or the branch main cancellation, and the output combining circuit of the branch main combining or the branch main cancellation through parallel connection of the input terminals of the two circuits, or the digital input terminals of the two circuits, or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits. The branch similar input combiner circuit includes: a distortion extraction, adjustment, and amplification circuit for analog distortion of the branch similar input combiner; a distortion extraction, adjustment, and amplification circuit for analog digital distortion of the branch similar input combiner; and a distortion extraction, adjustment, and amplification circuit for digital distortion of the branch similar input combiner. The branch similar input cancellation circuit includes: a distortion extraction, adjustment, and amplification circuit for analog predistortion of branch similar input cancellation; a distortion extraction, adjustment, and amplification circuit for analog digital predistortion of branch similar input cancellation; a distortion extraction, adjustment, and amplification circuit for digital predistortion of branch similar input cancellation; and a distortion extraction, adjustment, and amplification circuit for the auxiliary circuit of the branch similar input combiner and the main signal combiner of branch similar input cancellation.

9. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, The circuit features of the branch-similar input combiner circuit are as follows: A signal extraction circuit for analog distortion of the branch-similar input combiner is formed by connecting the input terminal of the main path of the coupled output load circuit of the input combiner or the input terminal of the amplitude modulation attenuation circuit of the input combiner through the output terminal of the analog distortion circuit of the branch-similar input combiner, or the output terminal of the analog-digital distortion circuit of the branch-similar input combiner, or the output terminal of the digital distortion circuit of the branch-similar input combiner. This forms a signal extraction circuit for analog distortion of the branch-similar input combiner, or a signal extraction circuit for analog-digital distortion of the branch-similar input combiner, or a signal extraction circuit for digital distortion of the branch-similar input combiner. This circuit, along with the main signal adjustment power amplifier circuit of the input combiner, is connected in parallel through the input branch circuit's input branch circuit or digital input branch circuit, and the distortion output combiner circuit of the input combiner. The analog input terminals of the corresponding two circuits, or one digital input terminal and one analog input terminal of one of the two circuits, are connected to the two circuits. The output terminal of the circuit, the output terminal of the analog distortion extraction circuit of the branch-similar input combiner, or the output terminal of the analog digital distortion extraction circuit of the branch-similar input combiner, or the output terminal of the digital distortion extraction circuit of the branch-similar input combiner, is connected to the input terminal of the distortion adjustment power amplifier circuit of the input combiner, forming a branch-similar input combiner circuit with the functions of analog distortion extraction adjustment amplifier circuit of the branch-similar input combiner, analog digital distortion extraction adjustment amplifier circuit of the branch-similar input combiner, or digital distortion extraction adjustment amplifier circuit of the branch-similar input combiner. Furthermore, by generating a distortion signal with input in-phase combiner compensation, it has the characteristic of extending the linear dynamic range of the gain of the main power signal smaller than the synchronous power point of the input combiner in the Class C main power signal output by the Class C main power amplifier circuit to a smaller output main power signal. The input terminals of the input branch circuit or the digital input branch circuit in the similar input combining circuit, and the output terminal of the distortion adjustment power amplifier circuit in the similar input combining circuit, correspond to the input and output terminals of the distortion extraction adjustment amplifier circuit for analog distortion of the similar input combining circuit, or the input and output terminals of the distortion extraction adjustment amplifier circuit for analog and digital distortion of the similar input combining circuit, or the input and output terminals of the distortion extraction adjustment amplifier circuit for digital distortion of the similar input combining circuit. The analog distortion circuit for branch-like input combiners, formed by a low-power branch power amplifier circuit for the input combiner or a branch feedforward power amplifier circuit for the input combiner, generates a distortion signal with input in-phase combiner compensation and amplifies the compensation Class C main circuit power. The gain linear dynamic range of the main power signal in the Class C main power signal output by the circuit, which is smaller than the input combined synchronous power point, is extended to have the characteristic of having a smaller output main power signal. The analog-digital distortion circuit or digital predistortion circuit of the branch similar input combiner generates an input in-phase combiner to compensate for distortion. It has the characteristic of extending the linear dynamic range of the gain of the main power signal with a gain less than the synchronous power point of the input combiner to a smaller output power signal, which compensates for the main power signal output by the Class C main power amplifier circuit. The output of the digital-to-analog converter circuit of the input combiner is connected to the input of a low-power input combiner analog power amplifier circuit. The feedback input of the analog-digital distortion circuit or digital predistortion circuit of the branch similar input combiner is connected to the feedback output of the input combiner coupling feedback adjustment circuit installed at the output of the main power amplifier circuit. This forms a corresponding main signal and branch similar input combiner combined circuit with the functions of the analog-digital distortion circuit or digital predistortion circuit of the branch similar input combiner.

10. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, The circuit features of the branch similar input cancellation circuit are as follows: The input terminal of the main path of the input cancellation coupling output load circuit or the input terminal of the input cancellation amplitude modulation attenuation circuit is connected to the output terminal of the branch similar input cancellation analog predistortion circuit, or the output terminal of the branch similar input cancellation analog digital predistortion circuit, or the output terminal of the branch similar input cancellation digital predistortion circuit, or the output terminal of the auxiliary circuit of the branch similar input cancelling branch similar input combining circuit and main signal combining circuit, thus forming a branch similar input cancellation analog predistortion signal extraction circuit, or forming a branch. The signal extraction circuit for analog-to-digital predistortion with similar input cancellation, or the signal extraction circuit for digital predistortion forming branch similar input cancellation, or the signal extraction circuit for auxiliary circuit combining branch similar input cancellation with the main signal, together with the main signal adjustment power amplifier circuit for input cancellation, through the input splitter circuit for input cancellation or through the digital input splitter circuit for input cancellation, and the input distortion output combiner circuit for input cancellation, are connected in parallel to the analog input terminals of the corresponding two circuits, or one digital input terminal and one analog input terminal of the two circuits and the output terminals of the two circuits, to form... The output terminal of the distortion extraction circuit for analog predistortion with branch-like input cancellation, or the output terminal of the distortion extraction circuit for analog-digital predistortion with branch-like input cancellation, or the output terminal of the distortion extraction circuit for digital predistortion with branch-like input cancellation, or the output terminal of the distortion extraction circuit for the auxiliary circuit of the branch-like input combiner and the main signal combiner, is connected to the input terminal of the distortion adjustment power amplifier circuit with input cancellation, thus forming a distortion extraction and adjustment amplifier circuit with the function of analog predistortion with branch-like input cancellation, or forming an analog predistortion amplifier circuit with branch-like input cancellation. The circuit has the functions of a digital predistortion distortion extraction and adjustment amplifier circuit, or a branch similar input cancellation circuit that forms a branch similar input cancellation auxiliary circuit with the distortion extraction and adjustment amplifier circuit of the branch similar input cancelling branch similar input and the main signal. Furthermore, the predistortion signal generated by the input inverse similar cancellation loss has characteristics similar to the distortion signal in the Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input cancelling main circuit with the main signal of the main circuit with the main signal cancelling branch similar input and the main signal, which is greater than the input cancellation synchronization power point. Among them, the input cancellation input branch circuit or the input cancellation digital input in the branch similar input cancellation circuit The input terminal of the input branch circuit and the output terminal of the input cancellation distortion adjustment power amplifier circuit correspond to the input and output terminals of the branch similar input cancellation analog pre-distortion distortion extraction adjustment amplifier circuit, or the input and output terminals of the branch similar input cancellation analog digital pre-distortion distortion extraction adjustment amplifier circuit, or the input and output terminals of the branch similar input cancellation digital pre-distortion distortion extraction adjustment amplifier circuit, or the input and output terminals of the branch similar input cancellation branch similar input combiner and main signal auxiliary circuit distortion extraction adjustment amplifier circuit, respectively. Among them, the analog predistortion circuit of branch similar input cancellation is formed by a branch power amplifier circuit with low power input cancellation or a branch feedforward power amplifier circuit with input cancellation. The circuit generates a predistortion signal with input inverse similar cancellation and has characteristics similar to the distortion signal in Class C main power signal with a gain linear dynamic range extension of the main power signal of the main circuit of the branch similar input combination and the main signal combination main circuit with the main signal, which is greater than the input cancellation synchronous power point. Specifically, by replacing the main power amplifier circuit in the main circuit of the branch similar input combiner and the main signal combiner with a similar low-power Class C input first auxiliary power amplifier circuit, a branch similar input cancelling branch similar input combiner and the main signal combiner auxiliary circuit generates a pre-distortion signal with input anti-phase similar cancellation, and has the same characteristics as the distortion signal of Class C main power signal with a gain linear dynamic range extension greater than the input cancellation synchronization power point as the main power signal output by the branch similar input combiner and the main signal combiner main circuit; The circuit consists of an analog-digital predistortion circuit or a digital predistortion circuit with branch-similar input cancellation that generates an input-inverting similarity cancellation predistortion signal. This signal has similarity characteristics to the main power signal of the main circuit with the combined main signal of the branch-similar input cancellation circuit and the main signal, and the gain of the main power signal is extended to a linear dynamic range of Class C. The output of the input cancellation digital-to-analog converter is connected to the input of a low-power input cancellation analog power amplifier circuit. The feedback input of the analog-digital predistortion circuit or the digital predistortion circuit with branch-similar input cancellation is connected to the feedback output of the input cancellation coupling feedback adjustment circuit installed at the output of the main power amplifier circuit. This forms a combined circuit of the main signal and the branch-similar input cancellation corresponding to the function of the analog-digital predistortion circuit or the digital predistortion circuit with branch-similar input cancellation. The input terminal of the input cancellation main signal adjustment power amplifier circuit in the branch similar input cancellation circuit is connected to the input terminal of the input cancellation input branch circuit and another output terminal, or it is installed in the input cancellation main signal delay adjustment circuit.

11. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, The input combining or input cancelling main signal delay adjustment circuit is composed of a delay circuit for input combining or input cancelling connected in series with an adjustable attenuation circuit for input combining or input cancelling or an amplitude modulation circuit for input combining or input cancelling; and it meets the main power signal requirements in the main circuit of the similar input combining and input cancelling branch circuits without generating new distortion signals.

12. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, By using a combining input splitter circuit or a combining digital input splitter circuit and a combining output coupling circuit, the analog input terminals or digital input terminals of the two circuits, or one analog input terminal and one digital input terminal and the output terminal of the two circuits, are connected in parallel to form a similar combining and canceling power amplifier circuit with the function of combining main circuit with branch similar input cancellation and branch output cancellation. Among them, the branch similar output cancellation circuit outputs a distortion signal with output inverse similar cancellation, and has similar characteristics to the C-class main power signal of the main power signal of the branch similar input combining circuit and the main circuit of the input cancellation combining circuit, which has a linear dynamic range extension of gain and is greater than the distortion signal of the output cancellation synchronous power point. Among them, the branch similar output cancellation circuit includes a distortion extraction, adjustment and amplification circuit for analog distortion cancellation of branch similar output, or a distortion extraction, adjustment and amplification circuit for analog digital distortion cancellation of branch similar output, or a distortion extraction, adjustment and amplification circuit for digital distortion cancellation of branch similar output, or a distortion extraction, adjustment and amplification circuit for auxiliary circuit of branch similar input combining circuit and input cancellation. The output cancellation characteristics at the output of the main circuit combining branch-similar input cancelling and branch-output cancelling are as follows: when the linear ACPR value of the Class C main power signal, which represents the linear dynamic range extension of the main power signal gain, reaches 40-45 dBc or higher at the output of the main circuit combining branch-similar input cancelling and input cancelling, the time delays at the output cancellation synchronization power points in the main circuit combining branch-similar input cancelling and branch-output cancelling are equal or nearly equal, equal or nearly equal, or opposite or nearly opposite in phase. The distorted signal generated by the branch similarity output cancellation circuit has output anti-phase similarity cancellation characteristics. This signal, through a gain linear dynamic range extension of the Class C main power signal output by the main circuit of the branch similarity input combining and input cancellation, is similar to the distorted signal greater than the output cancellation synchronization power point in the main power signal output by the main circuit of the branch similarity input combining and input cancellation. At the output of the main circuit of the branch similarity input combining and branch output cancellation, the distorted signal generated by the branch similarity output cancellation circuit with output anti-phase synchronization cancellation is realized, and this is similar to the distorted signal generated by the branch similarity output cancellation circuit with the distorted signal output anti-phase synchronization cancellation of the main circuit of the main circuit of the branch similarity input combining and input cancellation. The linear dynamic range of the gain of the main power signal output by the circuit extends to cancel the distortion signal greater than the output cancellation synchronization power point in the Class C main power signal. This improves the linear ACPR value of the main power signal output by the combined main circuit of the branch similar input cancelling and branch output cancelling to above 50-55 dBc. Alternatively, it achieves the cancellation of the distortion signal with output anti-phase synchronization cancellation generated by the branch similar output cancelling circuit, which cancels the distortion signal greater than the output cancellation synchronization power point in the Class C main power signal output by the combined main circuit of the branch similar input cancelling and input cancelling. It also has the reverse compensation characteristic of the Class C main power signal with the linear dynamic range of the gain of the main power signal generated by the branch similar output cancelling circuit and the combined main circuit of the branch similar input cancelling and input cancelling. This extends the linear dynamic range of the gain of the main power signal to further extend the linear gain of the Class C output main power signal to a smaller output main power range, improving the EVM value and gain fluctuation within the further extended linear dynamic range of the gain.

13. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, In the main circuit of the branch-similar input combining and branch-output combining circuits, the branch-similar output combining circuit is characterized by: connecting the output terminal of the analog distortion circuit of the branch-similar output combining circuit, or the output terminal of the analog-digital distortion circuit of the branch-similar output combining circuit, or the output terminal of the digital distortion circuit of the branch-similar output combining circuit, or the output terminal of the auxiliary circuit of the branch-similar input combining and input combining circuits of the branch-similar output combining circuit, to the input terminal of the main path of the output combining coupled output load circuit, or the input terminal of the output combining amplitude modulation attenuation circuit, thus forming a branch-similar output combining circuit. The signal extraction circuit includes: analog distortion signal extraction circuit with output cancellation, analog digital distortion signal extraction circuit with branch-like output cancellation, digital distortion signal extraction circuit with branch-like output cancellation, and signal extraction circuit with branch-like input combining circuit and input cancellation auxiliary circuit; and output cancellation main signal adjustment power amplifier circuit. Through output cancellation input splitter circuit or output cancellation digital input splitter circuit, and output cancellation distortion output combining circuit, the analog input terminals of two of the circuits are connected in parallel, or one digital input terminal of one of the two circuits is connected to one analog input terminal. The output terminals of the two-way circuit form the output terminals of the analog distortion extraction circuit for branch-like output cancellation, or the output terminals of the analog-digital distortion extraction circuit for branch-like output cancellation, or the output terminals of the digital distortion extraction circuit for branch-like output cancellation, or the output terminals of the distortion extraction circuit of the auxiliary circuit for the branch-like input combining and input cancellation; connected to the input terminals of the output cancellation distortion adjustment power amplifier circuit, forming a distortion extraction and adjustment amplifier circuit with the function of analog distortion extraction for branch-like output cancellation, or branch-like output... The circuit has the functions of distortion extraction and adjustment amplifier circuit for analog digital distortion cancellation, distortion extraction and adjustment amplifier circuit for digital distortion cancellation by branch similar output, and distortion extraction and adjustment amplifier circuit for branch similar output cancellation auxiliary circuit with distortion extraction and adjustment amplifier circuit with distortion extraction and adjustment amplifier circuit with branch similar input combiner and input cancellation. The output generates a distortion signal with output inverse similar cancellation, and has similar characteristics to the distortion signal in Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input combiner and input cancellation main circuit that is greater than the output cancellation synchronous power point. The branch similar output cancellation circuit N and the main circuit of the branch similar input cancellation and branch output cancellation are connected to the main circuit of the branch similar input cancellation and branch output cancellation through the branch input branch circuit N or the branch digital input branch circuit N, the branch output coupling circuit N, the analog input terminal of the two circuits or the digital input terminal of the two circuits or one analog input terminal and one digital input terminal of the two circuits and the output terminal of the two circuits in parallel, forming the main circuit of the branch similar input cancellation and branch output cancellation N-1. The branch similar output cancellation circuit N connected to the output terminal of the branch similar output cancellation circuit N is installed after the output terminal of the branch similar input cancellation circuit N-1 connected to the output terminal of the branch similar input cancellation circuit. The generated inverse similar cancellation distortion signal is similar to the distortion signal in the Class C main power signal with linear dynamic range extension of the main power signal gain of the branch similar input cancellation and branch output cancellation N-1, which is greater than the output cancellation synchronization power point. When the branch similar output cancellation circuit is N, the same applies, where N is a natural number greater than 1. The input terminal of the output cancellation input shunt circuit N or the output cancellation digital input shunt circuit N and the output terminal of the output cancellation distortion adjustment power amplifier circuit correspond to branch similar input combining cancellation and branch output cancellation, respectively. The input and output terminals of the N-1 combined main circuit, where; Among them, the analog distortion circuit with branch similar output cancellation is formed by a low-power output cancellation branch power amplifier circuit or an output power branch feedforward power amplifier circuit. It generates a distortion signal with output inverse similar cancellation, and has similar characteristics to the distortion signal in Class C main power signal with a gain linear dynamic range extension of the main power signal of the branch similar input combining circuit and the input cancellation main circuit, which is greater than the output cancellation synchronous power point. Specifically, by replacing the main power amplifier circuit in the main circuit of the branch similar input combining and input cancellation combining circuit with a similar low-power Class C output first auxiliary power amplifier circuit, an auxiliary circuit of the branch similar output cancellation combining and input cancellation combining circuit is formed, generating a distortion signal with output anti-phase similar cancellation, and having similar characteristics to the distortion signal in the Class C main power signal with a linear dynamic range extension of gain of the main power signal of the branch similar input combining and input cancellation combining main circuit with a distortion signal greater than the output cancellation synchronization power point; Alternatively, by replacing the main power amplifier circuit in the main circuit of the combined circuit with branch similar input cancelling and branch output cancelling N-1, a similar low-power Class C output Nth auxiliary power amplifier circuit is formed, forming a combined auxiliary circuit with branch similar output cancelling and branch output cancelling N-1. This generates a distorted signal with output anti-phase similar cancellation, and has similar characteristics to the Class C main power signal with a gain linear dynamic range extension of the main power signal of the combined main circuit with branch similar input cancelling and branch output cancelling N-1, where N is a natural number greater than 1. The analog-digital distortion circuit or digital distortion circuit with branch-similar output cancellation generates a distortion signal with output inverse similarity cancellation. This distortion signal has similar characteristics to the distortion signal in Class C main power signal with a linear dynamic range extension of the gain of the main power signal of the main circuit of the branch-similar input combination and the input cancellation main circuit. The output of the output cancellation digital-to-analog converter is connected to the input of a low-power output cancellation analog power amplifier circuit. The feedback input of the analog-digital distortion circuit or digital distortion circuit with branch-similar output cancellation is connected to the feedback output of the output cancellation coupling feedback adjustment circuit installed at the output of the main circuit of the branch-similar input combination cancellation and the branch-output cancellation. This forms the analog-digital distortion circuit or digital distortion circuit with branch-similar output cancellation. Among them, the branch similar output cancellation circuit in the main circuit of the branch similar input cancelling and branch output cancelling, wherein the input terminal of the main signal adjustment power amplifier circuit for output cancellation is connected to the input terminal and another output terminal of the output cancellation input branch circuit, or is installed in the input combining circuit or the main signal delay adjustment circuit for input cancellation in the main circuit of the branch similar input cancelling and branch output cancelling.

14. The power amplifier circuit with similar combining and canceling as described in claim 1, wherein, The main power output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar inputs and input cancellation is connected to the main power input terminal of the main circuit feedforward output cancellation circuit. The distortion output terminal of the feedforward distortion extraction circuit of the main circuit combining branch similar inputs and input cancellation is connected to the distortion input terminal of the main circuit feedforward output cancellation circuit, forming a similar combining and cancellation power amplifier circuit with the function of main circuit series combination of branch similar inputs and input cancellation and feedforward output cancellation. In a circuit where the branch-similar input combining and canceling main circuit and the feedforward output canceling circuit are connected in series, the feedforward distortion extraction circuit of the branch-similar input combining and input canceling main circuit is characterized by: connecting the output of the branch-similar input combining and input canceling main circuit to the input of the main path of the main circuit feedforward input coupling circuit to form a feedforward signal extraction circuit of the branch-similar input combining and input canceling main circuit; connecting the feedforward main circuit main signal adjustment power amplifier circuit, through a feedforward input shunting circuit or a feedforward digital input shunting circuit, and a feedforward distortion output combining circuit; and connecting in parallel to the analog input of the two circuits or one digital input of the two circuits and one... The analog input terminal of the branch circuit and the output terminal of the two circuits form a feedforward distortion extraction circuit for the main circuit of the combined circuit of similar inputs of the branches and input cancellation. The coupling output terminal of the main circuit feedforward input coupling circuit is the output terminal of the feedforward signal extraction circuit of the main circuit of the combined circuit of similar inputs of the branches and input cancellation. The analog input terminal of the feedforward input branch circuit or the digital input terminal of the feedforward digital input branch circuit, the output terminal of the main path of the main circuit feedforward input coupling circuit, and the output terminal of the feedforward distortion output combining circuit are the corresponding analog or digital input terminals, main power output terminals, and distortion output terminals of the feedforward distortion extraction circuit of the main circuit of the combined circuit of similar inputs of the branches and input cancellation. In the series circuit of branch similar input combining cancellation main circuit and feedforward output cancellation, the main circuit feedforward output cancellation circuit is composed of a feedforward main circuit delay circuit whose main input terminal is connected to the output terminal of the feedforward cancellation coupling circuit, and a feedforward distortion adjustment power amplifier circuit whose coupling input terminal is connected to the output terminal of the feedforward distortion adjustment power amplifier circuit. The input terminal of the feedforward main circuit delay circuit is the main power input terminal of the main circuit feedforward output cancellation circuit, the input terminal of the feedforward distortion adjustment power amplifier circuit is the distortion input terminal of the main circuit feedforward output cancellation circuit, and the output terminal of the feedforward cancellation coupling circuit is the output terminal of the main circuit feedforward output cancellation circuit. In the series circuit of branch similar input combining cancellation and feedforward output cancellation, the input terminal of the main path of the main path feedforward input coupling circuit, the feedforward distortion adjustment power amplifier circuit connected to the output terminal of the feedforward main path delay circuit and the feedforward distortion output combining circuit, and the output terminal of the feedforward cancellation coupling circuit form the main path feedforward combining cancellation circuit from the input terminal of the main path feedforward input coupling circuit to the output terminal of the feedforward cancellation coupling circuit. Among them, the input terminal of the feedforward input branch circuit and the feedforward output cancellation series circuit of the branch similar input combining circuit and the input cancellation combining circuit of the main circuit of the main circuit of the feedforward distortion extraction circuit of the feedforward main circuit of the main signal adjustment power amplifier circuit is connected to the input terminal of the feedforward input branch circuit and another output terminal, or is installed in the main signal delay adjustment circuit of the input combining circuit or input cancellation. The same type of cancellation characteristic at the output of the branch similar input combining cancellation main circuit and feedforward output cancellation series circuit is as follows: when the output of the branch similar input combining and input cancellation combining main circuit reaches a Class C main power linear ACPR of 40-45 dBc or higher, the gain linear dynamic range extension of the main power signal is achieved. At the output of the main circuit of the combining cancellation circuit and the feedforward output cancellation circuit, under the conditions that the time delay is equal or nearly equal, the amplitude is equal or nearly equal, and the phase is opposite or nearly opposite, the distortion signal extracted from the feedforward distortion extraction circuit of the main circuit of the combining main circuit of the similar input combining circuit and the input cancellation circuit is the same type of distortion signal. This distortion signal is obtained from the gain linear dynamic range extension of the Class C main power signal of the main power signal output by the main power signal of the main circuit of the combining main circuit of the similar input combining circuit and the input cancellation circuit. At the output of the main circuit feedforward combining cancellation circuit, under the conditions that the time delay is equal or nearly equal, the amplitude is equal or nearly equal, and the phase is opposite, the distortion signal is obtained from the gain linear dynamic range extension of the Class C main power signal of the main power signal output by the feedforward distortion extraction circuit of the main circuit of the similar input combining circuit and the input cancellation circuit is the same type of distortion signal. When the delays are equal or nearly equal, the amplitudes are equal or nearly equal, and the phases are opposite or nearly opposite, the gain linear dynamic range of the main power signal output by the main circuit of the branch similar input combining and input cancellation is extended. This results in the cancellation of the same type of distortion signal in the Class C main power signal, and further extends the gain linear dynamic range of the main power signal to reach the gain linear dynamic range of the Class AB output main power signal. It also improves the EVM value and gain fluctuation within the already extended gain linear dynamic range, and increases the Class C bus linear dynamic range of the Class AB main power signal output by the circuit of the branch similar input combining cancellation main circuit and the feedforward output cancellation series circuit to reach the linear ACPR value of the Class AB output power signal to above 50-55dBC, thereby improving the overall efficiency.

15. The power amplifier circuit with similar combining and canceling according to any one of claims 1 to 14, wherein, The input shunt circuit, the parallel input shunt circuit, the main-branch combined or main-branch canceling input shunt circuit, the input combined or input canceling input shunt circuit, the output canceling input shunt circuit, and the feedforward input shunt circuit are composed of shunt circuits, coupling circuits, or other circuits that realize the shunt function, and respectively meet the power capacity requirements and the requirement of not generating new distortion signals in the corresponding circuits above. Among them, the combined digital input splitter circuit, the parallel digital input splitter circuit, the feedforward digital input splitter circuit, the input combined digital input splitter circuit, the input cancelling digital input splitter circuit, and the output cancelling digital input splitter circuit are composed of digital splitter circuits and meet the requirements of digital signals. Both output terminals are digital terminals, or one of them is a digital signal output terminal and the other digital output terminal is an analog output terminal connected to the output terminal of the digital-to-analog converter circuit. They also meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above. Among them, the combined output coupling circuit, load coupling circuit, feedback coupling circuit, main feedforward input coupling circuit, and feedforward cancellation coupling circuit are composed of coupling circuits or other circuits that realize coupling functions, and respectively meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above. Among them, the parallel output combining circuit, the branch main combining circuit or the branch main canceling output combining circuit, the input combining circuit or the input canceling distortion output combining circuit, the output canceling distortion output combining circuit, and the feedforward distortion output combining circuit are composed of combining circuits or coupling circuits, or other circuits that realize the combining function, and respectively meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above. Among them, the input combining or input canceling main signal adjustment power amplifier circuit, the output canceling main signal adjustment power amplifier circuit, and the feedforward main signal adjustment power amplifier circuit are composed of the amplitude modulation circuit of the input combining or input canceling or output canceling or feedforward main circuit connected in series with the phase modulation circuit of the input combining or input canceling or output canceling or feedforward main circuit, and the adjustment circuit of the input combining or input canceling or output canceling or feedforward main circuit connected in series with the main signal power amplifier circuit of the input combining or input canceling or output canceling or feedforward main circuit. It meets the main signal power capacity requirements of the corresponding circuits above and does not generate new distortion. Among them, the output distortion cancellation adjustment power amplifier circuit, the input combining or input distortion cancellation adjustment power amplifier circuit, and the feedforward distortion adjustment power amplifier circuit are composed of an input combining or input cancellation or output cancellation or feedforward amplitude modulation circuit connected in series with an input combining or input cancellation or output cancellation or feedforward phase modulation circuit to form an adjustment circuit, and then connected in series with an input combining or input cancellation or output cancellation or feedforward distortion signal power amplifier circuit. In addition, it meets the corresponding power capacity requirements of the corresponding distortion signal in the above corresponding circuits and does not generate new distortion requirements. The input combining or input cancelling main signal delay adjustment circuit and the output cancelling main signal delay adjustment circuit are composed of an input combining or input cancelling adjustment circuit or an output cancelling adjustment circuit formed by connecting the input combining or input cancelling phase modulation circuit or the output cancelling phase modulation circuit in series, and an input combining or input cancelling or output cancelling delay circuit in series. They also meet the power capacity requirements and the requirement of not generating new distortion in the corresponding circuits above. Among them, the coupled output load circuit of input combining or input canceling or output canceling is composed of the main path output terminal of the load coupling circuit of input combining or input canceling or output canceling connected to the ungrounded end of the load resistor of input combining or input canceling or output canceling, and meets the power capacity requirements and the requirement of not generating new distortion in the corresponding circuit above. The input combining, input canceling, or output canceling coupled feedback adjustment circuit is connected to the input combining, input canceling, or output canceling feedback signal adjustment power amplifier circuit by connecting the coupled output terminal of the input combining, input canceling, or output canceling feedback coupling circuit. The input combining, input canceling, or output canceling feedback signal adjustment power amplifier circuit is composed of an input combining, input canceling, or output canceling amplitude modulation circuit connected to the input combining, input canceling, or output canceling feedback signal power amplifier circuit or an amplitude modulation circuit, and meets the power capacity requirements and the requirement of not generating new distortion in the above corresponding circuits.

16. The power amplifier circuit with similar combining and canceling according to any one of claims 1 to 15, wherein, The connection with the ET envelope tracking circuit forms a similar combining and canceling ET power amplifier circuit; The ET envelope tracking circuit is composed of two outputs of the ET branch circuit, connected to the input of the envelope tracking control circuit and the input of the ET main signal adjustment delay circuit, respectively. The envelope tracking control circuit is composed of the output of the envelope tracking signal processing circuit connected to the envelope input of the control power supply circuit. The ET input... The input terminal of the shunt circuit, the multiple power output terminals of the control power supply circuit with different voltages in the envelope tracking control circuit, the power input terminal, and the main signal output terminal of the ET main signal adjustment delay circuit are respectively the input terminal and power output terminal of the ET envelope tracking circuit, and the power input terminal and main signal output terminal. The ET envelope tracking circuit is connected to the drain power supply terminals of multiple power amplifier circuits with different and the same voltages in a similar combining and canceling power amplifier circuit through multiple power output terminals with different and the same voltages. The ET envelope tracking circuit is connected to the power supply, and the main signal output terminal of the ET envelope tracking circuit is connected to the input terminal of the similar combining and canceling power amplifier circuit, thus forming a similar combining and canceling ET power amplifier circuit. In the aforementioned similar combining and canceling ET power amplifier circuit, the ET envelope tracking control power supply and power of the power amplifier circuit of the similar combining input canceling main circuit of the branch are characterized as follows: by segmenting the envelope tracking signal and according to the relationship between drain voltage and output power, the corresponding main output power is achieved under different drain voltage combinations in the similar combining and canceling power amplifier circuit corresponding to each segment region of the envelope tracking signal. The conversion of the envelope tracking signal between segments requires readjusting the input combining and input cancellation characteristics of the main circuit output terminal of the main circuit that achieves similar input combining and input cancellation of the branch, or readjusting the output cancellation characteristics of the main circuit output terminal of the main circuit that achieves similar input combining and branch output cancellation, or readjusting the linear ACPR value of the output main power signal of the power amplifier circuit that achieves similar combining and cancellation characteristics of the main circuit output terminal of the main circuit that achieves similar input combining and feedforward output cancellation in series to 55dBc or higher, and improving the overall efficiency; the sum of the time delay consumed and the signal processing time delay of the envelope tracking signal in the envelope tracking control circuit and the time delay required for the control power supply circuit to change the voltage is equal to the time delay of the main signal adjustment delay circuit, or the sum of the time delay consumed and the envelope signal processing time delay of the envelope tracking control circuit and the time delay required for the control power supply to change the voltage under the condition of known envelope tracking signal segment area information is synchronously equal to the sum of the envelope signal processing time delay of the envelope tracking control circuit and the time delay required for the control power supply to change the voltage, and is equal to the time delay of the ET main signal adjustment delay circuit; The relationship between drain voltage and output power is characterized as follows: when the output power of the similarly combined and canceled power amplifier circuits decreases from a high power value to a low power value, the drain voltage of the multiple power amplifier circuits can decrease from the original high voltage combination to the low voltage drain voltage combination corresponding to the power value; when the output power of the similarly combined and canceled power amplifier circuits increases from a low power value to a high power value, the drain voltage of the multiple power amplifier circuits should first increase from the original low voltage combination to the high voltage combination corresponding to the power value of the high power value before the output power can change from a low power value to a high power value.

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