A high linearity signal transmitting device, method and transceiver

Abstract

The present invention discloses a high-linearity signal transmitting device, method and transceiver, and relates to the technical field of transceiver. The high-linearity signal transmitting device includes a baseband processing unit, a downlink power amplifier unit and a control unit, the baseband processing unit is used to generate a radio frequency downlink signal and a radio frequency reference signal; the downlink power amplifier unit is connected to the baseband processing unit, the downlink power amplifier unit is used to power amplify and linearize the radio frequency downlink signal, and couple the radio frequency reference signal during the power amplification and linearization process; the control unit is connected to the downlink power amplifier unit, the control unit is used to extract the radio frequency reference signal from the downlink power amplifier unit and perform power detection, and adjust the gain value of the power amplification and the phase value of the linearization process of the downlink power amplifier unit according to the power detection result; the purpose of the high-linearity output signal of the entire transceiver is achieved, thereby solving the problem existing in the application of multi-carrier signals to base station transceivers.

Description

Technical Field

[0001] The present invention relates to the technical field of transceiver devices, and in particular to a high linearity signal transmitting device, method and transceiver device. Background Art

[0002] Private network communication appeared earlier than public network communication and was mainly used in some special scenarios. For example, units such as petroleum, geology, coal, and electricity built their own private network communication systems because it was inconvenient to use public network communication systems in the field. There are also reasons such as confidentiality, such as the military and public security, and for personalized services, such as civil aviation, railways, and rail transit, they have built their own private network communication systems.

[0003] Compared with the rapid development of public network bandwidth capacity, private networks pay more attention to the reliability and security of network connections. For example, in PDT, P25, TETRA, DMR and other standards, narrowband technology is still the mainstream of private network communication. At the same time, in order to meet the capacity requirements in the field of private network communication, multi-carrier private network signals have been promoted and applied in recent years. However, the application of multi-carrier private network signals has also brought new problems. Due to the characteristics of the power amplifier, when the multi-carrier private network signal is input, nonlinearity will be generated, which will interfere with other channel signals, causing the multi-carrier signal base station transceiver equipment to fail to work properly. Therefore, after using multi-carrier signals, high-linearity signal transceiver devices are particularly important.

[0004] There are usually two types of nonlinear processing for multi-carrier signals: digital pre-distortion technology and feed-forward technology. Digital pre-distortion technology has been tried in base station transceivers because it can be integrated with baseband technology. However, this technology has a good correction effect on broadband signals, such as LTE and 5G NR, but a poor correction effect on narrowband signals, such as PDT, TETRA and other multi-carrier signals. In particular, when the interval between two narrowband signal carriers is small, the correction effect will be worse, and it cannot meet the application of base station transceiver equipment well. Feed-forward technology has a good correction effect on narrowband multi-carrier signals, but due to the characteristics of the technical architecture itself, when it is used alone, it requires complex signal generation and detection technology. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a high linearity signal transmitting device, method and transceiver device for solving the problems existing in the application of multi-carrier signals to base station transceivers.

[0006] According to a first aspect of the present invention, there is provided a high linearity signal transmitting device, comprising:

[0007] A baseband processing unit, the baseband processing unit is used to generate a radio frequency downlink signal and a radio frequency reference signal;

[0008] A downlink power amplifier unit, the downlink power amplifier unit is connected to the baseband processing unit, and the downlink power amplifier unit is used to power amplify and linearize the RF downlink signal, and couple the RF reference signal during the power amplification and linearization process;

[0009] The control unit is connected to the downlink power amplifier unit, and is used to extract the RF reference signal from the downlink power amplifier unit and perform power detection, and adjust the gain value of the downlink power amplifier unit for power amplification and the phase value of linearization processing according to the power detection result.

[0010] The high linearity signal transmitting device of the present invention extracts the coupled radio frequency reference signal from the downlink power amplifier unit and performs power detection through the control unit, and adjusts the gain value of the downlink power amplifier unit for power amplification and the phase value of the linearization processing according to the power detection result, so as to achieve the purpose of high linearity output signal of the entire transceiver device, thereby solving the problems existing in the application of multi-carrier signals to base station transceivers.

[0011] In some implementations, the downlink power amplifier unit includes:

[0012] A first coupler, the first coupler is connected to the baseband processing unit, and the first coupler is used to divide the radio frequency downlink signal into a first part and a second part;

[0013] A first fixed time delayer, the first fixed time delayer is connected to the first coupler, and the first fixed time delayer is used to perform time delay adjustment on a first part of the radio frequency downlink signal;

[0014] A first phase adjustment circuit, the first phase adjustment circuit is connected to the first coupler, and the first phase adjustment circuit is used to adjust the phase of the second part of the radio frequency downlink signal;

[0015] A third coupler, the third coupler is connected to the first phase adjustment circuit and the baseband processing unit respectively, and the third coupler is used to combine the second part of the phase-adjusted RF downlink signal with the RF reference signal to obtain a RF synthetic downlink signal;

[0016] A first gain adjustment circuit, the first gain adjustment circuit is connected to the third coupler, and the first gain adjustment circuit is used to adjust the gain of the radio frequency synthesized downlink signal;

[0017] A first delay adjustment circuit, the first delay adjustment circuit is connected to the first gain adjustment circuit, and the first delay adjustment circuit is used to perform delay adjustment on the gain-adjusted RF synthesized downlink signal;

[0018] A first power amplifier tube, the first power amplifier tube is connected to the first delay adjustment circuit, and the first power amplifier tube is used to adjust the power of the RF synthesized downlink signal after the delay adjustment;

[0019] A Doherty circuit, the Doherty circuit is connected to the first power amplifier tube, and the Doherty circuit is used to amplify the power of the RF synthesized downlink signal after power adjustment to obtain a high-power RF synthesized distorted downlink signal;

[0020] a fifth coupler, the fifth coupler being connected to the Doherty circuit, and the fifth coupler being used for dividing the high-power radio frequency synthesized distorted downlink signal into a first part and a second part;

[0021] A first isolator, the first isolator is connected to the fifth coupler, and the first isolator is used to isolate a first part of the high-power radio frequency synthesis distorted downlink signal;

[0022] A second fixed time delayer, the second fixed time delayer is connected to the first isolator, and the second fixed time delayer is used to perform time delay adjustment on the first part of the high-power RF synthetic distorted downlink signal after isolation processing;

[0023] a third gain adjustment circuit, the third gain adjustment circuit being connected to the fifth coupler, and the third gain adjustment circuit being used for performing gain adjustment on the second part of the high-power radio frequency synthesized distorted downlink signal;

[0024] An electric bridge, the electric bridge is connected to the first fixed time delay device and the third gain adjustment circuit respectively, and the electric bridge is used to combine the first part of the delay-adjusted RF downlink signal with the second part of the gain-adjusted high-power RF synthetic distortion downlink signal to obtain an RF synthetic distortion component signal;

[0025] A second power amplifier tube, the second power amplifier tube is connected to the bridge, and the second power amplifier tube is used to adjust the power of the radio frequency synthesis distortion component signal;

[0026] A second coupler, the second coupler is connected to the second power amplifier tube, and the second coupler is used to divide the radio frequency synthesis distortion component signal after power adjustment into a first part and a second part, and the second part of the radio frequency synthesis distortion component signal is sent to the control unit;

[0027] A second phase adjustment circuit, the second phase adjustment circuit is connected to the second coupler, and the second phase adjustment circuit is used to adjust the phase of the first part of the radio frequency synthesis distortion component signal;

[0028] A second gain adjustment circuit, the second gain adjustment circuit is connected to the second phase adjustment circuit, and the second gain adjustment circuit is used to perform gain adjustment on the first part of the phase-adjusted radio frequency synthesis distortion component signal;

[0029] A second delay adjustment circuit, the second delay adjustment circuit is connected to the second gain adjustment circuit, and the second delay adjustment circuit is used to perform delay adjustment on the first part of the gain-adjusted RF synthesis distortion component signal;

[0030] A third power amplifier tube, the third power amplifier tube is connected to the second delay adjustment circuit, and the third power amplifier tube is used to adjust the power of the first part of the RF synthesis distortion component signal after the delay adjustment;

[0031] an eleventh power amplifier tube and a twelfth power amplifier tube, the eleventh power amplifier tube and the twelfth power amplifier tube are connected in parallel to the third power amplifier tube, and the eleventh power amplifier tube and the twelfth power amplifier tube are used to power amplify the first part of the radio frequency synthesis distortion component signal after power adjustment;

[0032] A sixth coupler, the sixth coupler is connected to the second fixed delay device and the eleventh power amplifier tube respectively, and the sixth coupler is used to combine the first part of the high-power RF synthesis distortion downlink signal after delay adjustment with the first part of the RF synthesis distortion component signal after power amplification to obtain an RF synthesis cancellation downlink signal;

[0033] a seventh coupler, the seventh coupler being connected to the sixth coupler, the seventh coupler being used to divide the RF synthesis cancellation downlink signal into a first part and a second part, and the seventh coupler sending the second part of the RF synthesis cancellation downlink signal to the control unit;

[0034] The second isolator is connected to the seventh coupler and is used for isolating the first part of the RF synthesis cancellation downlink signal.

[0035] In some embodiments, the control unit comprises:

[0036] A second mean power detection module, the second mean power detection module is connected to the second coupler, and the second mean power detection module is used to detect the power value of the second part of the radio frequency synthesis distortion component signal to obtain a second power value;

[0037] A radio frequency integrated mixer, the radio frequency integrated mixer is connected to the seventh coupler, the radio frequency integrated mixer receives the second part of the radio frequency synthesis cancellation downlink signal and extracts a radio frequency reference signal;

[0038] A reference signal filtering module, the reference signal filtering module is connected to the RF integrated mixer, and the reference signal filtering module is used to filter the RF reference signal;

[0039] A reference signal logarithmic power detection module, the reference signal logarithmic power detection module is connected to the reference signal filtering module, and the reference signal logarithmic power detection module is used to detect the power value of the RF reference signal after filtering to obtain a third power value;

[0040] A microcontrol chip, the microcontrol chip is connected to the second mean power detection module and the reference signal logarithmic power detection module respectively, and the microcontrol chip is used to compare the second power value with the second threshold value, and adjust the phase value of the first phase adjustment circuit and the gain value of the first gain adjustment circuit according to the comparison result; and compare the third power value with the third threshold value, and adjust the phase value of the second phase adjustment circuit and the gain value of the second gain adjustment circuit according to the comparison result.

[0041] In some embodiments, the baseband processing unit includes:

[0042] Baseband chip, which is used to generate baseband downlink signals and reference baseband signals;

[0043] A first RF transceiver, the first RF transceiver is connected to the baseband chip, and the first RF transceiver is used to perform RF processing on the reference baseband signal to obtain a low-power RF reference signal;

[0044] a fifth gain adjustment circuit, the fifth gain adjustment circuit being connected to the first RF transceiver, and the fifth gain adjustment circuit being used to perform gain adjustment on the low-power RF reference signal;

[0045] a fifth power amplifier tube, the fifth power amplifier tube is connected to the fifth gain adjustment circuit, and the fifth power amplifier tube is used to adjust the power of the gain-adjusted low-power radio frequency reference signal to obtain a medium-power radio frequency reference signal, and send it to the third coupler;

[0046] The second RF transceiver is connected to the baseband chip and is used for performing RF processing on the baseband downlink signal to obtain a low-power RF downlink signal.

[0047] In some implementations, an input power control unit is further included. The input power control unit is connected between the baseband processing unit and the downlink power amplifier unit. The input power control unit is used to adjust the power of the RF downlink signal.

[0048] In some embodiments, the input power control unit comprises:

[0049] A fourth gain adjustment circuit, the fourth gain adjustment circuit is used to adjust the gain of the radio frequency downlink signal;

[0050] A fourth power amplifier tube, the fourth power amplifier tube is connected to a fourth gain adjustment circuit, and the fourth power amplifier tube is used to adjust the power of the gain-adjusted RF downlink signal to obtain a medium-power RF downlink signal;

[0051] a fourth coupler, the fourth coupler being connected to the fourth power amplifier tube, and the fourth coupler being used for dividing the medium-power RF downlink signal into a first part and a second part, and sending the first part of the medium-power RF downlink signal to the first coupler;

[0052] A first average power detection module, the first average power detection module is connected to the fourth coupler, and the first average power detection module is used to detect the power value of the second part of the medium-power RF downlink signal to obtain a first power value;

[0053] A comparator is connected to the first average power detection module, and is used to compare the first power value with the first threshold value, and adjust the bias value of the fourth gain adjustment circuit according to the comparison result.

[0054] According to a second aspect of the present invention, there is provided a high linearity signal transmission method, comprising:

[0055] Generate a radio frequency reference signal according to the lowest frequency point, the highest frequency point and the frequency offset value of the radio frequency reference signal of the working frequency band of the radio frequency downlink signal;

[0056] Amplifying and linearizing the radio frequency downlink signal, and coupling the radio frequency reference signal during the power amplification and linearization process;

[0057] A radio frequency reference signal is extracted from the process of power amplification and linearization processing and power detection is performed, and a gain value of power amplification and a phase value of linearization processing in the process of power amplification and linearization processing are adjusted according to the power detection result.

[0058] In some implementations, power amplifying and linearizing the radio frequency downlink signal, and coupling the radio frequency reference signal during the power amplification and linearization process includes:

[0059] dividing the radio frequency downlink signal into a first part and a second part;

[0060] Performing time delay adjustment on the first part of the radio frequency downlink signal;

[0061] adjusting the phase of the second part of the radio frequency downlink signal;

[0062] Combining the second part of the phase-adjusted RF downlink signal with the RF reference signal to obtain a RF synthesized downlink signal;

[0063] Perform gain adjustment on the RF synthesized downlink signal;

[0064] Performing delay adjustment on the gain-adjusted RF synthesized downlink signal;

[0065] Power adjustment of the delay-adjusted RF synthesized downlink signal;

[0066] Amplifying the power-adjusted RF synthesized downlink signal to obtain a high-power RF synthesized distorted downlink signal;

[0067] dividing the high-power radio frequency synthesized distorted downlink signal into a first part and a second part;

[0068] isolating a first portion of a high-power radio frequency synthesized distorted downlink signal;

[0069] Performing time delay adjustment on the first part of the isolated high-power RF synthesized distorted downlink signal;

[0070] Performing gain adjustment on the second part of the high-power RF synthesized distorted downlink signal;

[0071] The first part of the delay-adjusted RF downlink signal is combined with the second part of the gain-adjusted high-power RF synthesized distorted downlink signal to obtain a RF synthesized distorted component signal;

[0072] Adjusting the power of the radio frequency synthesized distortion component signal;

[0073] dividing the power-adjusted radio frequency synthesized distortion component signal into a first part and a second part;

[0074] Phase-adjusting a first portion of the radio frequency synthesized distortion component signal;

[0075] Performing gain adjustment on the first part of the phase-adjusted radio frequency synthesized distortion component signal;

[0076] Performing time delay adjustment on the first part of the gain-adjusted radio frequency synthesized distortion component signal;

[0077] Power-adjusting the first part of the delay-adjusted RF synthesized distortion component signal;

[0078] Performing power adjustment on the first part of the power-adjusted radio frequency synthesized distortion component signal;

[0079] Combining the first part of the high-power RF synthesis distortion downlink signal after time delay adjustment with the first part of the RF synthesis distortion component signal after power amplification to obtain a RF synthesis cancellation downlink signal;

[0080] The RF synthesis cancellation downlink signal is divided into a first part and a second part.

[0081] In some implementations, extracting a radio frequency reference signal from a power amplification and linearization process and performing power detection, and adjusting a power amplification gain value and a linearization phase value in the power amplification and linearization process according to a power detection result include:

[0082] Detecting a power value of a second part of the radio frequency synthesis distortion component signal to obtain a second power value;

[0083] Detect the power value of the RF reference signal after filtering to obtain a third power value

[0084] The second power value is compared with the second threshold value, and the phase value for phase adjustment of the second part of the RF downlink signal and the gain value for gain adjustment of the RF synthesized downlink signal are adjusted according to the comparison result; and the third power value is compared with the third threshold value, and the phase value for phase adjustment of the first part of the RF synthesized distortion component signal and the gain value for gain adjustment of the first part of the RF synthesized distortion component signal after phase adjustment are adjusted according to the comparison result.

[0085] According to a third aspect of the present invention, there is provided a high linearity signal transceiver device, comprising the above-mentioned high linearity signal transmitting device, a duplex unit and an uplink low noise amplifier unit;

[0086] The duplex unit is connected to the high linearity signal transmitting device, and the duplex unit is used to transmit downlink signals and receive uplink signals;

[0087] The uplink low noise amplifier unit is connected between the high linearity signal transmitting device and the duplex unit, and is used for performing linear amplification processing on the uplink signal.

[0088] Compared with the prior art, the high linearity signal transmitting device, method and transceiver of the present invention extract the coupled RF reference signal from the downlink power amplifier unit and perform power detection through the control unit, and adjust the gain value of the downlink power amplifier unit for power amplification and the phase value of the linearization processing according to the power detection result, so as to achieve the purpose of high linearity output signal of the entire transceiver, thereby solving the problems existing in the application of multi-carrier signals to base station transceivers. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Figure 1 A schematic diagram of the composition of a high linearity signal transceiver device according to an embodiment of the present invention;

[0090] Figure 2 A flowchart of a high linearity signal transmission method according to an embodiment of the present invention;

[0091] Figure 3 The flowchart of a high linearity signal transmission method according to another embodiment of the present invention.

[0092] Explanation of the accompanying drawings: baseband processing unit 100, baseband chip 110, first RF transceiver 120, second RF transceiver 130, first reference crystal oscillator 140, input power control unit 200, first mean power detection module 210, comparator 220, downlink power amplifier unit 300, Doherty circuit 310, control unit 400, second mean power detection module 410, RF integrated mixer 420, second reference crystal oscillator 430, reference signal filtering module 440, reference signal logarithmic power detection module 450, microcontroller chip 460. DETAILED DESCRIPTION

[0093] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0094] According to a first aspect of the present invention, Figure 1 A high linearity signal transmitting device according to an embodiment of the present invention is schematically shown. Figure 1 As shown, the high linearity signal transmitting device includes a baseband processing unit 100 , an input power control unit 200 , a downlink power amplifier unit 300 and a control unit 400 .

[0095] The baseband processing unit 100 is used to generate a RF downlink signal and a RF reference signal; the baseband processing unit includes a baseband chip 110, a first RF transceiver 120, a fifth gain adjustment circuit G5, a fifth power amplifier A5, a second RF transceiver 130 and a first reference crystal oscillator 140.

[0096] The baseband chip 110 generates a baseband downlink signal that meets the customer's application according to the needs of the private network communication base station, and generates a sinusoidal baseband signal as a reference baseband signal. Exemplarily, the baseband chip 110 can be implemented using FPGA or DSP, and the baseband downlink signal is characterized by a specific carrier bandwidth and 1...N baseband signals with arbitrary carrier intervals. Preferably, the baseband chip 110 uses Xilinx's XC7Z100 or Fudan Micro's FMQL45T900, and the baseband downlink signal carrier bandwidth is 25kHz. The carrier interval can be set arbitrarily, N is 8, and the reference baseband signal is a single carrier frequency signal.

[0097] The first RF transceiver 120 is connected to the baseband chip 100, and is used to perform RF processing on the reference baseband signal to obtain a low-power RF reference signal; illustratively, the first RF transceiver 120 is implemented using a dedicated chip, and preferably, the first RF transceiver 120 can be implemented using an integrated transceiver chip such as AD937x, CX814x, B20, etc.

[0098] The fifth gain adjustment circuit G5 is connected to the first RF transceiver 120 and is used to adjust the gain of the low-power RF reference signal. Exemplarily, the fifth gain adjustment circuit G5 can be constructed using dedicated devices or diodes.

[0099] The fifth power amplifier tube A5 is connected to the fifth gain adjustment circuit G5. The fifth power amplifier tube A5 is used to adjust the power of the low-power RF reference signal after gain adjustment to obtain a medium-power RF reference signal with linear power amplification. The fifth power amplifier tube A5 is a power amplifier tube working in Class A state; exemplarily, the fifth power amplifier tube A5 is a GaAs amplifier tube.

[0100] The second RF transceiver 130 is connected to the baseband chip 110. The second RF transceiver 130 is used to perform RF processing on the baseband downlink signal to obtain a low-power RF downlink signal. Exemplarily, the second RF transceiver 130 is implemented using a dedicated chip. Preferably, the first RF transceiver 120 can be implemented using an integrated transceiver chip such as AD937x, CX814x, B20, etc.

[0101] The first reference crystal oscillator 140 is connected to the baseband chip 110, the first RF transceiver 120 and the second RF transceiver 130 respectively. In order to ensure the frequency synchronization of the RF downlink signal and the RF reference signal, the baseband chip 110, the first RF transceiver 120 and the second RF transceiver 130 need to share the first reference crystal oscillator 140 as a reference source. Exemplarily, the reference crystal oscillator 1 is implemented by a constant temperature crystal oscillator. Preferably, the constant temperature crystal oscillator uses 30.72MHz.

[0102] The input power control unit 200 is connected between the baseband processing unit 100 and the downlink power amplifier unit 300, and the input power control unit 200 is used to adjust the power of the RF downlink signal; the input power control unit 200 includes a fourth gain adjustment circuit G4, a fourth power amplifier tube A4, a fourth coupler CPL4, a first mean power detection module 210 and a comparator 220.

[0103] The fourth gain adjustment circuit G4 is connected to the second RF transceiver 130 , and is used to adjust the gain of the RF downlink signal; illustratively, the fourth gain adjustment circuit G4 can be constructed using dedicated devices or diodes.

[0104] The fourth power amplifier tube A4 is connected to the fourth gain adjustment circuit G4. The fourth power amplifier tube A4 is used to adjust the power of the gain-adjusted RF downlink signal to obtain a medium-power RF downlink signal with linear power amplification. The fourth power amplifier tube A4 is a power amplifier tube working in Class A state; exemplarily, the fourth power amplifier tube A4 is a GaAs amplifier tube.

[0105] The fourth coupler CPL4 is connected to the fourth power amplifier tube A4, and the fourth coupler CPL4 is also grounded through the fourth resistor R4. The fourth coupler CPL4 is used to divide the medium-power RF downlink signal into a first part and a second part; exemplarily, the fourth coupler CPL4 is implemented using a microstrip line, and preferably, the coupling degree of the fourth coupler CPL4 is 20dB.

[0106] The first mean power detection module 210 is connected to the fourth coupler CPL4, and the first mean power detection module 210 is used to receive the second part of the medium-power RF downlink signal, and detect the power value of the second part of the medium-power RF downlink signal to obtain a first power value; exemplarily, the first mean power detection module 210 is implemented using a dedicated device, and preferably, the first mean power detection module 210 is implemented using an AD836x chip.

[0107] The comparator 220 is connected to the first mean power detection module 210. The comparator 220 is used to compare the first power value with the first threshold value, and adjust the bias value of the fourth gain adjustment circuit G4 according to the comparison result (i.e., the difference between the first power value and the first threshold value) to ensure that the RF downlink signal power passing through the fourth coupler CPL4 remains constant. Exemplarily, the comparator 220 is implemented using an operational amplifier.

[0108] The downlink power amplifier unit 300 is connected to the baseband processing unit 100, and is used for power amplifying and linearizing the RF downlink signal, and coupling the RF reference signal during the power amplification and linearization process; the downlink power amplifier unit 300 includes a first coupler CPL1, a first fixed delay delay1, a first phase adjustment circuit P1, a third coupler CPL3, a first gain adjustment circuit G1, a first delay adjustment circuit D1, a first power amplifier tube A1, a Doherty circuit 310, a fifth coupler CPL5, a first isolator ISO1, a second fixed delay delay2, a third gain adjustment circuit G3, a bridge RF1, a second power amplifier tube A2, a second coupler CPL2, a second phase adjustment circuit P2, a second gain adjustment circuit G2, a second delay adjustment circuit D2, a third power amplifier tube A3, an eleventh power amplifier tube AB3, a twelfth power amplifier tube AB4, a sixth coupler CPL6, a seventh coupler CPL6 and a second isolator ISO2.

[0109] The first coupler CPL1 is connected to the fourth coupler CPL4 in the input power control unit 200, and the first coupler CPL1 is also grounded through the first resistor R1. The first coupler CPL1 is used to divide the first part of the medium-power RF downlink signal (i.e., the RF downlink signal) sent from the fourth coupler CPL4 into a first part and a second part; illustratively, the first coupler CPL1 is implemented using a microstrip line, and preferably, the coupling degree of the first coupler CPL1 is 10dB. Of course, in other embodiments, the first coupler CPL1 can also be directly connected to the baseband processing unit 100, that is, the baseband processing unit 100 directly sends the RF downlink signal to the line power amplifier unit 300, thereby eliminating the input power control unit 200.

[0110] The first fixed delay device delay1 is connected to the first coupler CPL1, and is used for adjusting the delay of the first part of the RF downlink signal; illustratively, the first fixed delay device delay1 is implemented by a dedicated device or cable.

[0111] The first phase adjustment circuit P1 is connected to the first coupler CPL1, and is used to adjust the phase of the second part of the RF downlink signal; illustratively, the first phase adjustment circuit P1 can be constructed using dedicated devices or diodes.

[0112] The third coupler CPL3 is respectively connected to the first phase adjustment circuit P1 and the fifth power amplifier tube A5 in the baseband processing unit 100. The third coupler CPL3 is also grounded through the third resistor R3. The third coupler CPL3 is used to combine the second part of the phase-adjusted RF downlink signal with the RF reference signal sent from the fifth power amplifier tube A5 to obtain an RF synthetic downlink signal including the RF reference signal and the RF downlink signal; illustratively, the third coupler CPL3 is implemented using a microstrip line, and preferably the coupling degree of the third coupler CPL3 is 10dB.

[0113] The first gain adjustment circuit G1 is connected to the third coupler CPL3, and is used to adjust the gain of the RF synthesized downlink signal; illustratively, the first gain adjustment circuit G1 can be constructed using dedicated devices or diodes.

[0114] The first delay adjustment circuit D1 is connected to the first gain adjustment circuit G1, and is used to perform delay adjustment on the gain-adjusted RF synthesized downlink signal; illustratively, the first delay adjustment circuit D1 is implemented by a varactor diode.

[0115] The first power amplifier tube A1 is connected to the first delay adjustment circuit D1. The first power amplifier tube A1 is used to adjust the power of the RF synthesized downlink signal after delay adjustment. The first power amplifier tube A1 is a power amplifier tube working in Class A state; illustratively, the first power amplifier tube A1 is a GaAs amplifier tube.

[0116] The Doherty circuit 310 is connected to the first power amplifier tube A1 , and is used for amplifying the power-adjusted RF synthesized downlink signal to obtain a power-amplified high-power RF synthesized distorted downlink signal.

[0117] The Doherty circuit 310 includes a ninth power amplifier tube AB1, a tenth power amplifier tube AB2 and a thirteenth power amplifier tube C1. The ninth power amplifier tube AB1 is connected to the first power amplifier tube A1; the tenth power amplifier tube AB2 is connected to the ninth power amplifier tube AB1, and the thirteenth power amplifier tube C1 is connected in parallel with the tenth power amplifier tube AB2; the ninth power amplifier tube AB1 and the tenth power amplifier tube AB2 are power amplifier tubes working in class AB state, and the thirteenth power amplifier tube C1 is a power amplifier tube working in class C state. Exemplarily, the ninth power amplifier tube AB1 is a GaAs power amplifier tube or a LDMOS power amplifier tube, and the tenth power amplifier tube AB2 and the thirteenth power amplifier tube C1 are LDMOS or GaN power amplifier tubes.

[0118] The fifth coupler CPL5 is connected to the tenth power amplifier tube AB2 in the Doherty circuit 310, and the fifth coupler CPL5 is also grounded through the fifth resistor R5. The fifth coupler CPL5 is used to divide the high-power RF synthetic distorted downlink signal into a first part and a second part; exemplarily, the fifth coupler CPL5 is implemented using a microstrip line, and preferably, the coupling degree of the fifth coupler CPL5 is 30dB.

[0119] The first isolator ISO1 is connected to the fifth coupler CPL5, and the first isolator ISO1 is used for isolating and outputting the first part of the high-power RF synthesized distorted downlink signal.

[0120] The second fixed delay device delay2 is connected to the first isolator ISO1, and is used for adjusting the delay of the first part of the isolated high-power RF synthetic distorted downlink signal; illustratively, the second fixed delay device delay2 is implemented by a dedicated device or cable.

[0121] The third gain adjustment circuit G3 is connected to the fifth coupler CPL5, and is used to adjust the gain of the second part of the high-power RF synthesized distorted downlink signal; illustratively, the third gain adjustment circuit G3 can be constructed using dedicated devices or diodes.

[0122] The bridge RF1 is respectively connected to the first fixed delay device delay1 and the third gain adjustment circuit G3. The bridge RF1 is also grounded through the eighth resistor R8. The bridge RF1 is used to combine the first part of the delay-adjusted RF downlink signal with the second part of the gain-adjusted high-power RF synthetic distorted downlink signal to offset the RF downlink signal in the high-power RF synthetic distorted downlink signal, thereby obtaining a RF synthetic distorted component signal containing a RF reference signal. Exemplarily, the bridge RF1 adopts a 3dB bridge.

[0123] The second power amplifier tube A2 is connected to the bridge RF1, and is used for adjusting the power of the RF synthesis distortion component signal; the second power amplifier tube A2 is a power amplifier tube working in the Class A state, and illustratively, the second power amplifier tube A2 is a GaAs power amplifier tube.

[0124] The second coupler CPL2 is connected to the second power amplifier tube A2, and the second coupler CPL2 is also grounded through the second resistor R2. The second coupler CPL2 is used to divide the power-adjusted RF synthetic distortion component signal into a first part and a second part; exemplarily, the second coupler CPL2 is implemented using a microstrip line, and preferably, the coupling degree of the second coupler CPL2 is 10dB.

[0125] The second phase adjustment circuit P2 is connected to the second coupler CPL2, and is used to adjust the phase of the first part of the RF synthesis distortion component signal; illustratively, the second phase adjustment circuit P2 can be constructed using dedicated devices or diodes.

[0126] The second gain adjustment circuit G2 is connected to the second phase adjustment circuit P2, and is used to perform gain adjustment on the first part of the phase-adjusted RF synthesis distortion component signal; illustratively, the second gain adjustment circuit G2 can be constructed using dedicated devices or diodes.

[0127] The second delay adjustment circuit D2 is connected to the second gain adjustment circuit G2, and is used to perform delay adjustment on the first part of the gain-adjusted RF synthesis distortion component signal; illustratively, the second delay adjustment circuit D2 is implemented using a varactor diode.

[0128] The third power amplifier tube A3 is connected to the second delay adjustment circuit D2, and the third power amplifier tube A3 is used to adjust the power of the first part of the RF synthetic distortion component signal after delay adjustment; the third power amplifier tube A3 is a power amplifier tube working in Class A state, and exemplarily, the third power amplifier tube A3 is a GaAs power amplifier tube.

[0129] The eleventh power amplifier tube AB3 and the twelfth power amplifier tube AB4 are connected in parallel to the third power amplifier tube A3. The eleventh power amplifier tube AB3 and the twelfth power amplifier tube AB4 are used to power amplify the first part of the power-adjusted RF synthetic distortion component signal; the eleventh power amplifier tube AB3 and the twelfth power amplifier tube AB4 are power amplifier tubes working in the AB class state. Exemplarily, the eleventh power amplifier tube AB3 and the twelfth power amplifier tube AB4 are GaAs power amplifier tubes or LDMOS power amplifier tubes.

[0130] The sixth coupler CPL6 is respectively connected to the second fixed delay device delay2 and the eleventh power amplifier tube AB3, and the sixth coupler CPL6 is also grounded through the sixth resistor R6. The sixth coupler CPL6 is used to combine and cancel the first part of the high-power RF synthetic distortion downlink signal after delay adjustment with the first part of the RF synthetic distortion component signal after power amplification to obtain an RF synthetic cancellation downlink signal containing an RF reference signal; exemplarily, the sixth coupler CPL6 is implemented by a microstrip line, and preferably, the coupling degree of the sixth coupler CPL6 is 10dB.

[0131] The seventh coupler CPL7 is connected to the sixth coupler CPL6, and the seventh coupler CPL7 is also grounded through the seventh resistor R7. The seventh coupler CPL7 is used to divide the RF synthesis cancellation downlink signal into a first part and a second part; exemplarily, the seventh coupler CPL7 is implemented using a microstrip line, and preferably, the coupling degree of the seventh coupler CPL7 is 30dB.

[0132] The second isolator ISO2 is connected to the seventh coupler CPL7, and is used for isolating and outputting the first part of the RF synthesis cancellation downlink signal.

[0133] The control unit 400 is connected to the downlink power amplifier unit 300 respectively, and the control unit 400 is used to extract the RF reference signal from the downlink power amplifier unit 300 and perform power detection, and adjust the gain value of the power amplification and the phase value of the linearization processing of the downlink power amplifier unit 300 according to the power detection result; the control unit 400 includes a second mean power detection module 410, an RF integrated mixer 420, a second reference crystal oscillator 430, a reference signal filtering module 440, a reference signal logarithmic power detection module 450 and a microcontroller chip 460.

[0134] The second mean power detection module 410 is connected to the second coupler CPL2. The second mean power detection module 410 is used to receive the second part PWR1 of the RF synthetic distortion component signal sent by the second coupler CPL2 and perform power value detection to obtain a second power value. Exemplarily, the second mean power detection module 410 is implemented using an AD836x chip.

[0135] The RF integrated mixer 420 is connected to the seventh coupler CPL7, and is also connected to the second reference crystal oscillator 430. The RF integrated mixer 420 is used to receive the second part of the RF synthesis cancellation downlink signal sent by the seventh coupler CPL7 and extract the RF reference signal in the RF synthesis cancellation downlink signal; exemplarily, the RF integrated mixer 420 adopts the ECR865x chip, and the frequency of the second reference crystal oscillator 430 adopts 40MHz.

[0136] The reference signal filtering module 440 is connected to the RF integrated mixer 420 , and is used to filter the RF reference signal; illustratively, the reference signal filtering module 440 is implemented by a bandpass filter device.

[0137] The reference signal logarithmic power detection module 450 is connected to the reference signal filtering module 440, and the reference signal logarithmic power detection module 450 is used to detect the power value of the RF reference signal after filtering to obtain a third power value; exemplarily, the reference signal logarithmic power detection module 450 uses an AWE253 or AD831x chip.

[0138] The microcontroller chip 460 is connected to the second mean power detection module 410 and the reference signal logarithmic power detection module 450 respectively. The microcontroller chip 460 is used to compare the second power value with the second threshold value, and adjust the phase value of the first phase adjustment circuit P1 and the gain value of the first gain adjustment circuit G1 according to the comparison result; and compare the third power value with the third threshold value, and adjust the phase value of the second phase adjustment circuit P2 and the gain value of the second gain adjustment circuit G2 according to the comparison result. The control unit 400 extracts the coupled RF reference signal from the downlink power amplifier unit 300 and performs power detection, and adjusts the gain value of the downlink power amplifier unit for power amplification and the phase value of the linearization processing according to the power detection result, so as to achieve the purpose of high linearity output signal of the entire transceiver device, thereby solving the multi-carrier signal. Applied to the problems existing in the base station transceiver; in addition, the microcontroller chip 460 is also connected to the baseband chip 110 in the baseband processing unit 100 and the comparator 220 in the input power control unit 200, respectively. The baseband chip 110 transmits the operating frequency information of the RF downlink signal and the frequency information of the RF reference signal to the microcontroller chip 460. The microcontroller chip 460 controls the RF integrated mixer 420 according to the frequency information of the RF reference signal, extracts the RF reference signal by setting the same RF reference signal frequency value, and controls the comparator 220 according to the operating frequency information of the RF downlink signal, and sets the first threshold value of the comparator 220; illustratively, the microcontroller chip 460 adopts DSP, and preferably, the microcontroller chip 460 selects TI's TMS320F28xx series or the corresponding series chip of Allwinner Technology.

[0139] According to a second aspect of the present invention, Figure 2 The high linearity signal transmission method according to one embodiment of the present invention is schematically shown. Figure 2 As shown, the high linearity signal transmitting method is used to control the above-mentioned high linearity signal transmitting device, comprising:

[0140] S100: Generate a radio frequency reference signal according to the lowest frequency point, the highest frequency point and the frequency offset value of the radio frequency reference signal of the working frequency band of the radio frequency downlink signal;

[0141] In this implementation method, generating a radio frequency reference signal according to the lowest frequency point, the highest frequency point and the radio frequency reference signal frequency offset value of the radio frequency downlink signal working frequency band includes:

[0142] Determine the lowest frequency point F1, the highest frequency point F2 of the working frequency band of the radio frequency downlink signal, and the frequency offset value ΔF of the radio frequency reference signal;

[0143] The frequency value of the RF reference signal is calculated according to the formula ((F1+F2) / 2)+ΔF);

[0144] According to the calculated frequency value, a radio frequency reference signal is generated, and a radio frequency downlink signal is generated according to actual needs.

[0145] S200: performing power amplification and linearization processing on the radio frequency downlink signal, and coupling the radio frequency reference signal during the power amplification and linearization processing;

[0146] In this implementation method, power amplifying and linearizing the radio frequency downlink signal, and coupling the radio frequency reference signal during the power amplification and linearization process include:

[0147] dividing the radio frequency downlink signal into a first part and a second part;

[0148] Performing time delay adjustment on the first part of the radio frequency downlink signal;

[0149] adjusting the phase of the second part of the radio frequency downlink signal;

[0150] Combining the second part of the phase-adjusted RF downlink signal with the RF reference signal to obtain a RF synthesized downlink signal;

[0151] Perform gain adjustment on the RF synthesized downlink signal;

[0152] Performing delay adjustment on the gain-adjusted RF synthesized downlink signal;

[0153] Power adjustment of the delay-adjusted RF synthesized downlink signal;

[0154] Amplifying the power-adjusted RF synthesized downlink signal to obtain a high-power RF synthesized distorted downlink signal;

[0155] dividing the high-power radio frequency synthesized distorted downlink signal into a first part and a second part;

[0156] isolating a first portion of a high-power radio frequency synthesized distorted downlink signal;

[0157] Performing time delay adjustment on the first part of the isolated high-power RF synthesized distorted downlink signal;

[0158] Performing gain adjustment on the second part of the high-power RF synthesized distorted downlink signal;

[0159] The first part of the delay-adjusted RF downlink signal is combined with the second part of the gain-adjusted high-power RF synthesized distorted downlink signal to obtain a RF synthesized distorted component signal;

[0160] Adjusting the power of the radio frequency synthesized distortion component signal;

[0161] dividing the power-adjusted radio frequency synthesized distortion component signal into a first part and a second part;

[0162] Phase-adjusting a first portion of the radio frequency synthesized distortion component signal;

[0163] Performing gain adjustment on the first part of the phase-adjusted radio frequency synthesized distortion component signal;

[0164] Performing time delay adjustment on the first part of the gain-adjusted radio frequency synthesized distortion component signal;

[0165] Power-adjusting the first part of the delay-adjusted RF synthesized distortion component signal;

[0166] amplifying the power of the first part of the radio frequency synthesized distortion component signal after power adjustment;

[0167] Combining the first part of the high-power RF synthesis distortion downlink signal after time delay adjustment with the first part of the RF synthesis distortion component signal after power amplification to obtain a RF synthesis cancellation downlink signal;

[0168] The RF synthesis cancellation downlink signal is divided into a first part and a second part.

[0169] S300: extracting a radio frequency reference signal from the process of power amplification and linearization processing and performing power detection, and adjusting a gain value of power amplification and a phase value of linearization processing in the process of power amplification and linearization processing according to the power detection result.

[0170] In this implementation method, extracting a radio frequency reference signal from the process of power amplification and linearization processing and performing power detection, and adjusting the gain value of power amplification and the phase value of linearization processing in the process of power amplification and linearization processing according to the power detection result include:

[0171] Detecting a power value of a second part of the radio frequency synthesis distortion component signal to obtain a second power value;

[0172] Detect the power value of the RF reference signal after filtering to obtain a third power value

[0173] The second power value is compared with the second threshold value, and the phase value for phase adjustment of the second part of the RF downlink signal and the gain value for gain adjustment of the RF synthesized downlink signal are adjusted according to the comparison result; and the third power value is compared with the third threshold value, and the phase value for phase adjustment of the first part of the RF synthesized distortion component signal and the gain value for gain adjustment of the first part of the RF synthesized distortion component signal after phase adjustment are adjusted according to the comparison result.

[0174] In an exemplary scenario, Figure 3 As shown, including:

[0175] The baseband processing unit 100 determines the lowest frequency point F1, the highest frequency point F2, and the frequency offset value ΔF of the RF reference signal in the downlink signal operating frequency band;

[0176] The baseband chip 110 in the baseband processing unit 100 calculates the frequency value of the radio frequency reference signal according to the formula ((F1+F2) / 2)+ΔF);

[0177] The baseband processing unit 100 generates a radio frequency reference signal according to the calculated frequency value; and generates a radio frequency downlink signal according to actual needs;

[0178] The control unit 400 obtains the frequency value of the radio frequency reference signal transmitted by the baseband processing unit 100;

[0179] The microcontroller chip 460 in the control unit 400 controls the RF integrated mixer 420 to extract the RF reference signal by setting the same RF reference signal frequency value;

[0180] The radio frequency reference signal is subjected to signal filtering and logarithmic power detection to obtain a third power value of the radio frequency reference signal;

[0181] Whether the third power value is less than the third threshold value, if so, the current adjustment is ended, otherwise, the phase value of the second phase adjustment circuit P2 and the gain value of the second gain adjustment circuit G2 are changed;

[0182] In addition, the downlink power amplifier unit 300 inputs a radio frequency downlink signal and a radio frequency reference signal;

[0183] The second coupler CPL2 in the downlink power amplifier unit 300 extracts the radio frequency synthesis distortion component signal PWR1;

[0184] PWR1 passes through the second mean power detection module 410 of the control unit 400 to obtain a second power value of the distortion component signal;

[0185] Whether the second power value is less than the second threshold value, if it is, the current adjustment is ended, otherwise, the phase value of the first phase adjustment circuit P1 and the gain value of the first gain adjustment circuit G1 are changed.

[0186] According to the third aspect of the present invention, continue to refer to Figure 1 , Figure 1 A high linearity signal transceiver device according to an embodiment of the present invention is schematically shown. Figure 1 As shown, the high linearity signal transceiver device includes the above-mentioned high linearity signal transmitting device, a duplex unit 500 and an uplink low noise amplifier unit 600;

[0187] The duplex unit 500 is connected to a high-linearity signal transmitting device, and is used to perform downlink filtering on the RF synthesis cancellation downlink signal after the isolated output, and then transmit a high-linearity downlink signal outward, as well as receive an uplink signal and perform uplink filtering on the uplink signal; exemplarily, the duplex unit 500 is a cavity duplexer.

[0188] The uplink low noise amplifier unit 600 is connected between the high linear signal transmitting device and the duplex unit 500, and is used to perform linear amplification processing on the uplink signal; the uplink low noise amplifier unit 600 includes a seventh power amplifier tube A7, an eighth power amplifier tube A8, a bandpass filter BP1, a sixth power amplifier tube A6 and a sixth gain adjustment circuit G6.

[0189] The seventh power amplifier tube A7 is connected in parallel with the eighth power amplifier tube A8, and the seventh power amplifier tube A7 is connected to the duplex unit 500. The seventh power amplifier tube A7 and the eighth power amplifier tube A8 are used to adjust the power of the uplink signal; the seventh power amplifier tube A7 and the eighth power amplifier tube A8 are power amplifier tubes in Class A working state. Exemplarily, the seventh power amplifier tube A7 and the eighth power amplifier tube A8 are GaAs power amplifier tubes.

[0190] The bandpass filter BP1 is connected to the seventh power amplifier tube A7, and the bandpass filter BP1 is used for filtering the uplink signal after power adjustment.

[0191] The sixth power amplifier tube A6 is connected to the bandpass filter BP1 and is used to adjust the power of the uplink signal after filtering. The sixth power amplifier tube A6 is a power amplifier tube in Class A working state. Exemplarily, the sixth power amplifier tube A6 is a GaAs power amplifier tube.

[0192] The sixth gain adjustment circuit G6 is connected to the sixth power amplifier tube A6. The sixth gain adjustment circuit G6 is used to adjust the gain of the uplink signal after power adjustment, and send it to the high linearity signal transmitting device, enter the uplink channel of the second RF transceiver 130 of the baseband processing unit 100, and after signal conversion, enter the baseband chip 110 to complete the processing of the uplink signal; illustratively, the gain adjustment circuit G6 can be constructed using special devices or diodes.

[0193] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A high linearity signal transmitting device, characterized in that: include: A baseband processing unit, the baseband processing unit is used to generate a radio frequency downlink signal and a radio frequency reference signal; A downlink power amplifier unit, the downlink power amplifier unit is connected to the baseband processing unit, the downlink power amplifier unit is used to power amplify and linearize the radio frequency downlink signal, and couple the radio frequency reference signal during the power amplification and linearization process; A control unit, the control unit is connected to the downlink power amplifier unit, the control unit is used to extract the RF reference signal from the downlink power amplifier unit and perform power detection, and adjust the gain value of the power amplification and the phase value of the linearization processing of the downlink power amplifier unit according to the power detection result; The downlink power amplifier unit comprises: A first coupler, the first coupler is connected to the baseband processing unit, and the first coupler is used to divide the radio frequency downlink signal into a first part and a second part; A first fixed time delayer, the first fixed time delayer is connected to the first coupler, and the first fixed time delayer is used to perform time delay adjustment on a first part of the RF downlink signal; a first phase adjustment circuit, the first phase adjustment circuit being connected to the first coupler, and the first phase adjustment circuit being used to perform phase adjustment on the second part of the RF downlink signal; a third coupler, the third coupler being connected to the first phase adjustment circuit and the baseband processing unit respectively, and the third coupler being used for combining the second part of the phase-adjusted RF downlink signal with the RF reference signal to obtain a RF synthetic downlink signal; A first gain adjustment circuit, the first gain adjustment circuit is connected to the third coupler, and the first gain adjustment circuit is used to perform gain adjustment on the RF synthesized downlink signal; A first delay adjustment circuit, the first delay adjustment circuit is connected to the first gain adjustment circuit, and the first delay adjustment circuit is used to perform delay adjustment on the gain-adjusted RF synthesized downlink signal; A first power amplifier tube, the first power amplifier tube is connected to the first delay adjustment circuit, and the first power amplifier tube is used to adjust the power of the RF synthesized downlink signal after the delay adjustment; A Doherty circuit, the Doherty circuit is connected to the first power amplifier tube, and the Doherty circuit is used to amplify the power of the RF synthesized downlink signal after power adjustment to obtain a high-power RF synthesized distorted downlink signal; a fifth coupler, the fifth coupler being connected to the Doherty circuit, and the fifth coupler being used for dividing the high-power radio frequency synthesized distorted downlink signal into a first part and a second part; A first isolator, the first isolator is connected to the fifth coupler, and the first isolator is used to isolate a first part of the high-power RF synthesized distorted downlink signal; A second fixed time delayer, the second fixed time delayer is connected to the first isolator, and the second fixed time delayer is used to adjust the delay of the first part of the high-power RF synthetic distorted downlink signal after isolation processing; a third gain adjustment circuit, the third gain adjustment circuit being connected to the fifth coupler, and the third gain adjustment circuit being used for performing gain adjustment on the second part of the high-power RF synthesized distorted downlink signal; A bridge, the bridge is connected to the first fixed delay device and the third gain adjustment circuit respectively, and the bridge is used to combine the first part of the RF downlink signal after delay adjustment with the second part of the high-power RF synthetic distortion downlink signal after gain adjustment to obtain a RF synthetic distortion component signal; a second power amplifier tube, the second power amplifier tube being connected to the bridge, and the second power amplifier tube being used for adjusting the power of the radio frequency synthesized distortion component signal; A second coupler, the second coupler is connected to the second power amplifier tube, the second coupler is used to divide the radio frequency synthesis distortion component signal after power adjustment into a first part and a second part, and the second part of the radio frequency synthesis distortion component signal is sent to the control unit; a second phase adjustment circuit, the second phase adjustment circuit being connected to the second coupler, and the second phase adjustment circuit being used for performing phase adjustment on a first part of the radio frequency synthesized distortion component signal; a second gain adjustment circuit, the second gain adjustment circuit being connected to the second phase adjustment circuit, and the second gain adjustment circuit being used for performing gain adjustment on a first part of the phase-adjusted radio frequency synthesized distortion component signal; A second delay adjustment circuit, the second delay adjustment circuit is connected to the second gain adjustment circuit, and the second delay adjustment circuit is used to perform delay adjustment on the first part of the gain-adjusted RF synthesized distortion component signal; a third power amplifier tube, the third power amplifier tube being connected to the second delay adjustment circuit, and the third power amplifier tube being used for adjusting the power of the first part of the RF synthesis distortion component signal after delay adjustment; an eleventh power amplifier tube and a twelfth power amplifier tube, wherein the eleventh power amplifier tube and the twelfth power amplifier tube are connected in parallel to the third power amplifier tube, and the eleventh power amplifier tube and the twelfth power amplifier tube are used to power amplify the first part of the radio frequency synthesis distortion component signal after power adjustment; a sixth coupler, the sixth coupler being connected to the second fixed delay device and the eleventh power amplifier tube respectively, and the sixth coupler being used to combine the first part of the high-power RF synthesis distortion downlink signal after delay adjustment with the first part of the RF synthesis distortion component signal after power amplification to obtain an RF synthesis cancellation downlink signal; a seventh coupler, the seventh coupler being connected to the sixth coupler, the seventh coupler being used to divide the RF synthesis cancellation downlink signal into a first part and a second part, and the seventh coupler sending the second part of the RF synthesis cancellation downlink signal to the control unit; a second isolator, the second isolator being connected to the seventh coupler, and the second isolator being used to isolate a first part of the RF synthesis cancellation downlink signal; The control unit comprises: A second mean power detection module, the second mean power detection module is connected to the second coupler, and the second mean power detection module is used to detect the power value of the second part of the radio frequency synthesis distortion component signal to obtain a second power value; A radio frequency integrated mixer, the radio frequency integrated mixer is connected to the seventh coupler, the radio frequency integrated mixer receives the second part of the radio frequency synthesis cancellation downlink signal and extracts the radio frequency reference signal; A reference signal filtering module, the reference signal filtering module is connected to the RF integrated mixer, and the reference signal filtering module is used to filter the RF reference signal; A reference signal logarithmic power detection module, the reference signal logarithmic power detection module is connected to the reference signal filtering module, and the reference signal logarithmic power detection module is used to detect the power value of the RF reference signal after filtering to obtain a third power value; A microcontroller chip, wherein the microcontroller chip is respectively connected to the second mean power detection module and the reference signal logarithmic power detection module, and the microcontroller chip is used to compare the second power value with a second threshold value, and adjust the phase value of the first phase adjustment circuit and the gain value of the first gain adjustment circuit according to the comparison result; and compare the third power value with a third threshold value, and adjust the phase value of the second phase adjustment circuit and the gain value of the second gain adjustment circuit according to the comparison result.

2. The high linearity signal transmitting device according to claim 1, characterized in that: The baseband processing unit comprises: A baseband chip, wherein the baseband chip is used to generate a baseband downlink signal and a reference baseband signal; A first RF transceiver, the first RF transceiver is connected to the baseband chip, and the first RF transceiver is used to perform RF processing on the reference baseband signal to obtain a low-power RF reference signal; a fifth gain adjustment circuit, the fifth gain adjustment circuit being connected to the first RF transceiver, and the fifth gain adjustment circuit being used to perform gain adjustment on the low-power RF reference signal; a fifth power amplifier tube, the fifth power amplifier tube being connected to the fifth gain adjustment circuit, and the fifth power amplifier tube being used for performing power adjustment on the gain-adjusted low-power RF reference signal to obtain a medium-power RF reference signal, and sending the signal to the third coupler; A second RF transceiver is connected to the baseband chip, and is used for performing RF processing on the baseband downlink signal to obtain a low-power RF downlink signal.

3. The high linearity signal transmitting device according to claim 2, characterized in that: It also includes an input power control unit, which is connected between the baseband processing unit and the downlink power amplifier unit, and is used to adjust the power of the radio frequency downlink signal.

4. The high linearity signal transmitting device according to claim 3, characterized in that: The input power control unit comprises: a fourth gain adjustment circuit, the fourth gain adjustment circuit being used to perform gain adjustment on the radio frequency downlink signal; a fourth power amplifier tube, the fourth power amplifier tube being connected to the fourth gain adjustment circuit, and the fourth power amplifier tube being used for adjusting the power of the gain-adjusted RF downlink signal to obtain a medium-power RF downlink signal; a fourth coupler, the fourth coupler being connected to the fourth power amplifier tube, the fourth coupler being used to divide the medium-power RF downlink signal into a first part and a second part, and sending the first part of the medium-power RF downlink signal to the first coupler; a first average power detection module, the first average power detection module being connected to the fourth coupler, and the first average power detection module being used to detect a power value of the second part of the medium-power RF downlink signal to obtain a first power value; A comparator, the comparator is connected to the first average power detection module, the comparator is used to compare the first power value with a first threshold value, and adjust the bias value of the fourth gain adjustment circuit according to the comparison result.

5. A high linearity signal transmission method, characterized in that: include: Generate a radio frequency reference signal according to the lowest frequency point, the highest frequency point and the frequency offset value of the radio frequency reference signal of the working frequency band of the radio frequency downlink signal; Performing power amplification and linearization processing on the radio frequency downlink signal, and coupling the radio frequency reference signal during the power amplification and linearization processing; Extracting the radio frequency reference signal from the process of power amplification and linearization processing and performing power detection, and adjusting the gain value of power amplification and the phase value of linearization processing in the process of power amplification and linearization processing according to the power detection result; The power amplification and linearization processing of the radio frequency downlink signal, and coupling the radio frequency reference signal during the power amplification and linearization processing include: Dividing the radio frequency downlink signal into a first part and a second part; Performing time delay adjustment on the first part of the radio frequency downlink signal; performing phase adjustment on the second part of the radio frequency downlink signal; Combining the second part of the phase-adjusted RF downlink signal with the RF reference signal to obtain a RF synthesized downlink signal; Performing gain adjustment on the radio frequency synthesized downlink signal; Performing delay adjustment on the gain-adjusted RF synthesized downlink signal; Adjusting the power of the RF synthesized downlink signal after delay adjustment; Amplifying the power-adjusted RF synthesized downlink signal to obtain a high-power RF synthesized distorted downlink signal; Dividing the high-power radio frequency synthesized distorted downlink signal into a first part and a second part; Isolating a first portion of the high-power radio frequency synthesized distorted downlink signal; Performing time delay adjustment on the first part of the high-power RF synthesized distorted downlink signal after isolation processing; Performing gain adjustment on the second part of the high-power RF synthesized distorted downlink signal; Combining the first part of the delay-adjusted RF downlink signal with the second part of the gain-adjusted high-power RF synthesized distorted downlink signal to obtain a RF synthesized distorted component signal; Performing power adjustment on the radio frequency synthesized distortion component signal; dividing the radio frequency synthesized distortion component signal after power adjustment into a first part and a second part; Performing phase adjustment on a first portion of the radio frequency synthesized distortion component signal; Performing gain adjustment on the first part of the phase-adjusted radio frequency synthesized distortion component signal; Performing time delay adjustment on the first part of the gain-adjusted radio frequency synthesized distortion component signal; Power-adjusting the first part of the delay-adjusted RF synthesized distortion component signal; Amplifying the power of the first part of the radio frequency synthesized distortion component signal after power adjustment; Combining the first part of the high-power RF synthesis distortion downlink signal after time delay adjustment with the first part of the RF synthesis distortion component signal after power amplification to obtain a RF synthesis cancellation downlink signal; Dividing the radio frequency synthesis cancellation downlink signal into a first part and a second part; The extracting the radio frequency reference signal from the process of power amplification and linearization processing and performing power detection, and adjusting the gain value of power amplification and the phase value of linearization processing in the process of power amplification and linearization processing according to the power detection result include: Detecting a power value of a second part of the radio frequency synthesized distortion component signal to obtain a second power value; Detecting the power value of the RF reference signal after filtering to obtain a third power value The second power value is compared with the second threshold value, and the phase value of the second part of the RF downlink signal for phase adjustment and the gain value of the RF synthesized downlink signal for gain adjustment are adjusted according to the comparison result; and the third power value is compared with the third threshold value, and the phase value of the first part of the RF synthesized distortion component signal for phase adjustment and the gain value of the first part of the RF synthesized distortion component signal after phase adjustment are adjusted according to the comparison result.

6. A high linearity signal transceiver, characterized in that: It comprises the high linearity signal transmitting device, duplex unit and uplink low noise amplifier unit as described in any one of claims 1 to 4; The duplex unit is connected to the high linearity signal transmitting device, and the duplex unit is used to transmit downlink signals and receive uplink signals; The uplink low noise amplifier unit is connected between the high linearity signal transmitting device and the duplex unit, and is used for performing linear amplification processing on the uplink signal.

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