Harmonic suppression method and system and terminal equipment

Abstract

The invention relates to the technical field of signal processing, and provides a harmonic suppression method, a harmonic suppression system and terminal equipment. According to the harmonic suppression method provided by the invention, the preset radio frequency input signal is acquired, and power division processing is performed on the preset radio frequency input signal through the first preset power division strategy, so that the first branch signal and the second branch signal which have the first preset phase difference are obtained; the first branch signal and the second branch signal have a first preset phase difference, and the third branch signal and the fourth branch signal have a second preset phase difference therebetween, so that when signal synthesis processing is performed on the first branch signal and the second branch signal as well as the third branch signal and the fourth branch signal by using a preset signal synthesis strategy, fundamental wave synthesis is not influenced, and harmonic waves are synthesized to be 0, thereby achieving a good harmonic suppression effect. And obtaining the radio frequency output signal meeting the preset signal condition.

Description

Technical Field

[0001] This application relates to the technical field of signal processing, and in particular, to a harmonic suppression method, system, and terminal device. Background Art

[0002] Broadband high-power amplifiers are widely used in fields such as electromagnetic compatibility, electronic countermeasures, and active phased array radars. Due to the nonlinear characteristics of the semiconductor devices used in the amplifiers, harmonic distortion is introduced, which seriously affects the signal quality and causes distortion in precise interference strikes and high-quality signal processing. The high harmonic suppression methods of conventional broadband amplifiers are as follows and have certain limitations in use: 1. The existing method using switches and filter banks first segments the frequency band using switches so that each segment is a narrowband signal, and then filters are configured at the output ends of each narrowband signal for harmonic suppression. However, because the switches have low power tolerance and large insertion losses, they are often used in small signal generators and cannot meet the requirements of high-power amplifiers; 2. The power back-off technology generally uses a power amplifier tube with 6 dB higher power than the required power for power back-off, but this results in low power usage efficiency of high-power tubes and high costs; 3. Using the 1 / 4 short-circuit line principle, specific harmonic difference frequency points are short-circuited to ground by 1 / 4, and the fundamental frequency signal is in an open state, but this matching is often processed at point frequencies or narrowband signals and cannot achieve broadband harmonic suppression; 4. The feedforward predistortion compensation technology can achieve harmonic suppression effects, but because the output signals of each frequency point of the amplifier need to be coupled, the signals are processed in the reverse direction, and the scanning and storage are configured in the FPGA, which requires a high signal processing rate of the FPGA, and the system complexity is large and the cost is high.

[0003] Therefore, how to solve the problem of high harmonic suppression of broadband amplifiers has become increasingly prominent. Summary of the Invention

[0004] The purpose of this application is to provide a harmonic suppression method, system, and terminal device, aiming to solve the technical problem that the problem of high harmonic suppression of current broadband amplifiers has become increasingly prominent.

[0005] In the first aspect, this application provides a harmonic suppression method, which is characterized by including: Obtain a preset radio frequency input signal; Perform power splitting processing on the preset radio frequency input signal through a first preset power splitting strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal. There is a first preset phase difference between the second branch signal and the first branch signal, and a second preset phase difference between the third branch signal and the fourth branch signal; Perform signal synthesis processing on the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal by using a preset signal synthesis strategy to obtain a radio frequency output signal that meets the preset signal conditions.

[0006] The harmonic suppression method provided by the embodiment of the present application, after obtaining a preset radio frequency input signal, performs power splitting processing on the preset radio frequency input signal through a first preset power splitting strategy to obtain a first branch signal and a second branch signal with a first preset phase difference therebetween, and a third branch signal and a fourth branch signal with a second preset phase difference therebetween. When using a preset signal synthesis strategy to perform signal synthesis processing on the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal, due to the first preset phase difference between the first branch signal and the second branch signal, when the harmonics in the fundamental wave and the harmonics respectively included in the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal are synthesized, due to the phase difference between the harmonics of the branch signals, the phases are different during signal synthesis, so that the harmonics are cancelled, and thus the harmonics can be effectively suppressed, while the synthesis of the fundamental wave is not affected, that is, through the solution of the present application, a good harmonic suppression effect can be achieved, that is, a radio frequency output signal meeting the preset signal conditions is obtained.

[0007] In some embodiments, the performing power splitting processing on the preset radio frequency input signal through a first preset power splitting strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal includes: Performing first power splitting processing on the preset radio frequency input signal through a first preset power splitting strategy to obtain a fifth branch signal and a sixth branch signal, and there is a third preset phase difference between the fifth branch signal and the sixth branch signal; Performing second power splitting processing on the fifth branch signal and the sixth branch signal respectively through a second preset power splitting strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal.

[0008] In some embodiments, the signals between the two-way branches included in the preset power splitter have a preset phase difference. The performing first power splitting processing on the preset radio frequency input signal through a first preset power splitting strategy to obtain a fifth branch signal and a sixth branch signal includes: Processing the preset radio frequency input signal through the two-way branches of the preset power splitter based on a first preset power splitting strategy to obtain the fifth branch signal and the sixth branch signal.

[0009] In some embodiments, each two-way branch in the preset power splitter further includes two-way sub-branches, and the signals between the two-way sub-branches have a preset phase difference, and each two-way sub-branch is connected to one power amplifier chip; The performing second power splitting processing on the fifth branch signal and the sixth branch signal respectively through a second preset power splitting strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal includes: Through the two-way branch arms of each branch arm in the preset power divider and the power amplifier chips connected to each branch arm, the fifth branch signal and the sixth branch signal are respectively subjected to second power division processing based on the second preset power division strategy to obtain the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal.

[0010] In some embodiments, it further includes: a preset synthesizer, the preset synthesizer is respectively connected to the output ends of each power amplifier chip, the phase of the first branch signal and the second branch signal is opposite, and the phase of the third branch signal and the fourth branch signal is opposite. The signal synthesis processing of the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal by using the preset signal synthesis strategy to obtain a radio frequency output signal meeting the preset signal conditions includes: The first branch signal and the second branch signal are synthesized by the preset synthesizer using the preset signal synthesis strategy to obtain a first synthesized signal; The third branch signal and the fourth branch signal are synthesized by the preset synthesizer using the preset signal synthesis strategy to obtain a second synthesized signal; The first synthesized signal and the second synthesized signal are subjected to signal synthesis processing by the preset synthesizer using the preset signal synthesis strategy to obtain a radio frequency output signal meeting the preset signal conditions, wherein there is a fourth preset phase difference between the first synthesized signal and the second synthesized signal.

[0011] In some embodiments, based on the preset formula in the preset signal synthesis strategy, the fundamental wave combined power, the synthesized output voltage of the fundamental wave signal, the harmonic combined power, and the synthesized output voltage of the harmonic signal of the first synthesized signal, the second synthesized signal, and the radio frequency output signal are determined by the preset synthesizer.

[0012] In a second aspect, the present application provides a harmonic suppression system, including: An acquisition module, configured to acquire a preset radio frequency input signal; A processing module, configured to perform power division processing on the preset radio frequency input signal through a first preset power division strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal, there is a first preset phase difference between the second branch signal and the first branch signal, and there is a second preset phase difference between the third branch signal and the fourth branch signal; A synthesis module, configured to perform signal synthesis processing on the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal by using the preset signal synthesis strategy to obtain a radio frequency output signal meeting the preset signal conditions.

[0013] In some embodiments, the processing module is configured to perform a first power splitting process on the preset radio frequency input signal through a first preset power splitting strategy to obtain a fifth branch signal and a sixth branch signal, where there is a third preset phase difference between the fifth branch signal and the sixth branch signal; and perform a second power splitting process on the fifth branch signal and the sixth branch signal respectively through a second preset power splitting strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal.

[0014] In some embodiments, it further includes: the signals between the two branches of the preset power splitter have a preset phase difference. The performing a first power splitting process on the preset radio frequency input signal through a first preset power splitting strategy to obtain a fifth branch signal and a sixth branch signal includes: Processing the preset radio frequency input signal through the two branches of the preset power splitter based on the first preset power splitting strategy to obtain the fifth branch signal and the sixth branch signal.

[0015] In a third aspect, the present application provides a terminal device, which is characterized by including a memory, a processor, and a computer program stored in the memory and executable on the processor, where when the processor executes the computer program, the harmonic suppression method described above is implemented.

[0016] It can be understood that the beneficial effects of the above second aspect to the third aspect can refer to the relevant descriptions in the above first aspect, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the implementation process of the harmonic suppression method provided by the embodiment of the present application; Figure 2 It is a schematic diagram of the specific implementation process of step S12 of the harmonic suppression method provided by the embodiment of the present application.

[0019] Figure 3 It is a schematic diagram of the specific implementation process of step S13 of the harmonic suppression method provided by the embodiment of the present application.

[0020] Figure 4 It is a cross-sectional view of a component composed of a preset power splitter and a preset synthesizer provided by the embodiment of the present application.

[0021] Figure 5It is a schematic framework diagram of the harmonic suppression system provided by the embodiment of the present application.

[0022] Figure 6 It is a schematic structural diagram of the terminal device provided by the embodiment of the present application.

[0023] Reference numerals in the drawings: 1. Waveguide cavity; 2. Waveguide-to-coaxial conversion direct-through RF board. Detailed implementation manners

[0024] In the following description, specific details such as specific device structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details.

[0025] As used in the specification of the present application and the appended claims, the term "if" can be interpreted as "when" or "once" or "in response to determining" or "in response to detecting" according to the context. Similarly, the phrase "if it is determined" or "if [the described condition or event] is detected" can be interpreted as meaning "once it is determined" or "in response to determining" or "once [the described condition or event] is detected" or "in response to detecting [the described condition or event]" according to the context.

[0026] In addition, in the description of the specification of the present application and the appended claims, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0027] The reference to "one embodiment" or "some embodiments" etc. in the specification of the present application means that a specific feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0028] In order to illustrate the technical solutions described in the present application, the following will be described through specific embodiments.

[0029] The present application provides a harmonic suppression method, which can avoid affecting the signal quality due to harmonic distortion and bring distortion to precise interference strikes and high-quality signal processing.

[0030] Please refer to Figure 1 ,Figure 1 This is a flowchart for implementing a harmonic suppression method provided by an embodiment of the present application, including the following steps: S11: Obtain a preset radio frequency input signal; In this embodiment, in order to avoid affecting the signal quality and causing distortion to precise interference strikes and high-quality signal processing, a preset radio frequency input signal is obtained so that the preset radio frequency input signal can be processed, solving the problem of high harmonic suppression of broadband power amplifiers, and thus enabling signal transmission to better meet user requirements.

[0031] It can be understood that in the periodic oscillation of the preset radio frequency input signal, the preset radio frequency input signal includes a fundamental wave and harmonics. The sine wave component equal to the longest period of this oscillation is called the fundamental wave. The frequency corresponding to this period is called the fundamental frequency. The sine wave components whose frequencies are integer multiples of the fundamental frequency are called harmonics.

[0032] Definition of fundamental wave: The lowest frequency component of the composite wave of the preset radio frequency input signal.

[0033] Definition of harmonic: It refers to the components of each order greater than an integer multiple of the fundamental frequency obtained by Fourier series decomposition of a periodic non-sinusoidal alternating quantity, usually called high-order harmonics.

[0034] In some embodiments, regarding when to obtain the preset radio frequency input signal, it includes but is not limited to the following scenarios: Scenario 1: Obtain the preset radio frequency input signal when it is detected that the target signal receiving device is started.

[0035] Scenario 2: Obtain the user profile of the user of the target signal receiving device, and when it is determined through the user profile and the current time information that the user is at the time point of processing the target signal demand task, obtain the preset radio frequency input signal.

[0036] Scenario 3: Periodically obtain the preset radio frequency input signal when it is detected that the target signal receiving device is in an operating state.

[0037] S12: Perform power division processing on the preset radio frequency input signal through a first preset power division strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal. There is a first preset phase difference between the second branch signal and the first branch signal, and there is a second preset phase difference between the third branch signal and the fourth branch signal.

[0038] In this embodiment, in order to effectively suppress harmonics, the preset RF input signal is divided by a first preset power splitting strategy to obtain a first branch signal and a second branch signal, as well as a third branch signal and a fourth branch signal, and a first preset phase difference exists between the obtained second branch signal and the first branch signal, and a second preset phase difference exists between the third branch signal and the fourth branch signal. Therefore, when signal synthesis is performed subsequently, based on the phase difference, harmonics can be effectively suppressed.

[0039] It can be understood that according to different harmonic processing requirements, the first preset phase difference and the second preset phase difference can be preset according to actual needs. For example, the first preset phase difference is set to 180 degrees and the second preset phase difference is set to 180 degrees, or the first preset phase difference is set to 90 degrees and the second preset phase difference is set to 90 degrees.

[0040] S13: Use a preset signal synthesis strategy to perform signal synthesis processing on the first branch signal and the second branch signal, as well as the third branch signal and the fourth branch signal, to obtain an RF output signal that meets the preset signal conditions.

[0041] In this embodiment, in order to obtain a signal after suppressing harmonics, a preset signal synthesis strategy is used to perform signal synthesis processing on the first branch signal and the second branch signal, as well as the third branch signal and the fourth branch signal, to obtain an RF output signal that meets the preset signal conditions.

[0042] It can be understood that the preset signal conditions refer to the user's requirements for the harmonics of the signal, such as the harmonics in the signal being 0, or the signal including strong harmonics.

[0043] The harmonic suppression method provided by the embodiment of the present application, after obtaining the preset RF input signal, divides the preset RF input signal by a first preset power splitting strategy to obtain a first branch signal and a second branch signal with a first preset phase difference therebetween, and a third branch signal and a fourth branch signal with a second preset phase difference therebetween. When using a preset signal synthesis strategy to perform signal synthesis processing on the first branch signal and the second branch signal, as well as the third branch signal and the fourth branch signal, because a first preset phase difference exists between the first branch signal and the second branch signal, when the harmonics in the fundamental waves and harmonics respectively included in the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal are synthesized, due to the phase difference between the harmonics of the branch signals, the harmonics can be effectively suppressed during synthesis, while the fundamental waves of the branch signals are not affected. That is, through the solution of the present application, a good harmonic suppression effect can be achieved, that is, an RF output signal that meets the preset signal conditions is obtained.

[0044] Combined with Figure 2, in some embodiments of the present application, the process of splitting the preset RF input signal by the first preset power splitting strategy to obtain a first branch signal, a second branch signal, a third branch signal, and a fourth branch signal includes: S21: Perform a first power splitting process on the preset RF input signal by the first preset power splitting strategy to obtain a fifth branch signal and a sixth branch signal, where there is a third preset phase difference between the fifth branch signal and the sixth branch signal; S22: Perform a second power splitting process on the fifth branch signal and the sixth branch signal respectively by the second preset power splitting strategy to obtain a first branch signal, a second branch signal, a third branch signal, and a fourth branch signal.

[0045] In this embodiment, in order to better suppress the harmonic signals of the preset input RF signal, perform a first power splitting process on the preset RF input signal by the first preset power splitting strategy to obtain a fifth branch signal and a sixth branch signal with a third preset phase difference therebetween. Then, perform a second power splitting process on the fifth branch signal and the sixth branch signal respectively by the second preset power splitting strategy to obtain a first branch signal, a second branch signal, a third branch signal, and a fourth branch signal, so that the fundamental wave synthesis of the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal with corresponding preset phase differences therebetween is not affected, and the harmonic synthesis is 0, achieving a good harmonic suppression effect.

[0046] In some embodiments of the present application, the signals between the two branch arms included in the preset power splitter have a preset phase difference. The process of performing a first power splitting process on the preset RF input signal by the first preset power splitting strategy to obtain a fifth branch signal and a sixth branch signal includes: Process the preset RF input signal through the two branch arms of the preset power splitter based on the first preset power splitting strategy to obtain the fifth branch signal and the sixth branch signal.

[0047] In this embodiment, after obtaining the preset RF input signal, in order to better process the harmonic signals included in the preset RF input signal, process the preset RF input signal through the two branch arms of the preset power splitter based on the first preset power splitting strategy to obtain the fifth branch signal and the sixth branch signal.

[0048] Among them, the first preset power splitting strategy refers to the power splitting requirements set by the user according to the actual usage scenario. When the signal passes through the power splitter (power divider), the power and voltage of the signal usually change to meet the user's needs, that is, after the preset RF input signal is processed by the preset power splitter, the signal power and voltage of the branch signals meet the user's requirements.

[0049] For example, when the preset power divider is an equal-power divider, the input power of the preset RF input signal is divided into two equal parts, and the power of each output port is half of the input power. That is, the power corresponding to the fifth and sixth signals is half of the preset RF input signal.

[0050] Exemplarily, the T-type waveguide power division / synthesis method is adopted, that is, a method of cooperating the preset power divider and the preset synthesizer. The 180° phase difference of the two branches of the T-type power division / synthesis is used to synthesize 4-way power amplifier chips, which improves the harmonic suppression in the 18-26.5 GHz broadband, and has the advantages of high synthesis efficiency, large output power, low complexity and low cost.

[0051] The specific principle is as follows: The input signal of +32 dBm enters the BJ220 waveguide standard port. The length and width of the standard waveguide port are 10.668 mm × 4.318 mm. Then it is T-type power-divided into 2 ways, and the phase difference between the two branch arms is 180°. Each way is impedance-transformed into a BJ320 standard port, and then T-type power-divided into 4 ways. The phase difference between every two branch arms is 180°. Waveguide-to-microstrip impedance transformation is performed at the 4 output waveguide ports, that is, waveguide-to-microstrip impedance transformation is performed at the output ports of the 4 branch arms of the preset power divider. The impedance becomes 50 ohms, and the power on the microstrip line is +25.5 dBm, which is used to drive 4 power amplifier chips to amplify to 40.5 dBm respectively. Then waveguide T-type 4-way synthesis is performed (this synthesis is reciprocal with T-type 4-way power division), that is, the preset synthesizer receives each branch signal from each branch arm of the preset power divider by respectively setting the branch arm channels connected to each branch arm of the preset power divider, and then performs signal synthesis, that is, synthesizes the first synthesized signal and the second synthesized signal, and synthesizes the first synthesized signal and the second synthesized signal to obtain the RF output signal under the preset signal conditions, that is, finally synthesizes a high-power output of 40 W, and the second harmonic suppression is ≥ 65 dBc.

[0052] In addition, the BJ220 standard waveguide is used for 4-way power division / synthesis in the range of 18-26.5 GHz. The inner cavity of the waveguide uses air as the medium, and the air breakdown field strength is , with high power capacity, which can meet the transmission of high-power signals. At the same time, the main mode transmission frequency band of the BJ220 waveguide is 18-26.5 GHz, and the harmonic frequency is 36-53 GHz, which is far outside the waveguide transmission frequency band, and further uses the out-of-band harmonic suppression of the waveguide main transmission mode.

[0053] In some embodiments, each branch arm channel of the preset synthesizer connected to each branch arm of the preset power divider is connected to each branch arm of the preset power divider through a waveguide-to-microstrip direct-through RF board.

[0054] Among them, the waveguide-to-microstrip direct-through RF board is a RF device used to convert waveguide transmission signals and coaxial cable transmission signals.

[0055] In some embodiments of the present application, each branch arm of the preset power divider further includes two branch arms, and the signal phases between the two branch arms differ by a preset degree, and each branch arm is connected to one power amplifier chip; The second power division processing of the fifth branch signal and the sixth branch signal respectively by the second preset power division strategy to obtain the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal includes: Through the two branch arms of each branch arm of the preset power divider and the power amplifier chips connected to each branch arm, the second power division processing is respectively performed on the fifth branch signal and the sixth branch signal by using the second preset power division strategy to obtain the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal.

[0056] In this embodiment, in order to more effectively suppress harmonics, through the two branch arms of each branch arm of the preset power divider and the power amplifier chips connected to each branch arm, the second power division processing is respectively performed on the fifth branch signal and the sixth branch signal by using the second preset power division strategy, that is, the fifth branch signal is power-divided and the signal is amplified by the power amplifier chip to obtain the first branch signal and the second branch signal, and the sixth branch signal is power-divided and the signal is amplified by the power amplifier chip to obtain the third branch signal and the fourth branch signal.

[0057] Exemplarily, in combination with Figure 4 , after the preset radio frequency input signal is input into the preset power divider of the four-way waveguide, the fifth branch signal with a 90-degree phase waveform and the sixth branch signal with a -90-degree phase waveform are first obtained. Then, the fifth branch signal is power-divided again into a branch signal with a 180-degree phase waveform and a branch signal with a 0-degree phase waveform, and at the same time, the sixth branch signal is power-divided again into a branch signal with a 0-degree phase waveform and a branch signal with a 180-degree phase waveform, and the power amplification processing of the signals is respectively performed through the power amplifier chip P1, so as to respectively obtain the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal. It adopts a T-shaped waveguide power division / synthesis method, uses the 180° phase difference between the two arms of the T-shaped power division / synthesis to suppress harmonics, and makes full use of the low-loss characteristics of the waveguide, so that the power amplifier synthesis efficiency is high, the power capacity is large, the overall design complements each other, the complexity is low, and the design is low-cost, providing a core basic module and an effective solution for higher power levels and harmonic suppression.

[0058] In some embodiments, each branch arm channel of the preset synthesizer connected to each branch arm of the preset power divider is connected to each branch arm of the preset power divider through a waveguide-to-coaxial conversion direct-through radio frequency board and a power amplifier chip P1.

[0059] In combination with Figure 3, in some embodiments of the present application, it further includes: a preset synthesizer, the preset synthesizer is respectively connected to the output ends of each power amplifier chip, the first branch signal and the second branch signal have opposite phases, and the third branch signal and the fourth branch signal have opposite phases.

[0060] Performing signal synthesis processing on the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal by using a preset signal synthesis strategy to obtain a radio frequency output signal meeting the preset signal conditions, including: S31: Synthesize the first branch signal and the second branch signal by using the preset signal synthesis strategy through the preset synthesizer to obtain a first synthesized signal; S32: Synthesize the third branch signal and the fourth branch signal by using the preset signal synthesis strategy through the preset synthesizer to obtain a second synthesized signal; S33: Perform signal synthesis processing on the first synthesized signal and the second synthesized signal by using the preset signal synthesis strategy through the preset synthesizer to obtain a radio frequency output signal meeting the preset signal conditions, wherein there is a fourth preset phase difference between the first synthesized signal and the second synthesized signal.

[0061] In this embodiment, in order to suppress harmonics, the first branch signal and the second branch signal are synthesized by using the preset signal synthesis strategy through the preset synthesizer, so that the first branch signal and the second branch signal with a preset phase difference are synthesized to obtain a first synthesized signal; at the same time, the third branch signal and the fourth branch signal are synthesized by using the preset signal synthesis strategy through the preset synthesizer, so that the third branch signal and the fourth branch signal with a preset phase difference are synthesized to obtain a second synthesized signal, and then, the first synthesized signal and the second synthesized signal are subjected to signal synthesis processing by using the preset signal synthesis strategy through the preset synthesizer to obtain a radio frequency output signal meeting the preset signal conditions, thereby suppressing the harmonics of multiple signals with phase differences respectively based on the phase differences to obtain a radio frequency output signal with suppressed harmonics.

[0062] Exemplarily, in combination with Figure 4 , the first branch signal, the second branch signal, the third branch signal, and the fourth branch signal are respectively input into a four-way waveguide synthesizer composed of a preset power divider and a preset synthesizer. Then, the first branch signal and the second branch signal are synthesized to obtain a first synthesized signal with a 90-degree phase waveform. Then, the third branch signal and the fourth branch signal are synthesized to obtain a second synthesized signal with a -90-degree phase waveform. Finally, the first synthesized signal and the second synthesized signal with opposite phases are subjected to signal synthesis processing to obtain a radio frequency output signal meeting the preset signal conditions.

[0063] In some embodiments of the present application, based on a preset formula in a preset signal synthesis strategy, a preset synthesizer determines the fundamental wave combined power, the synthesized output voltage of the fundamental wave signal, the harmonic combined power, and the synthesized output voltage of the harmonic signal of the first synthesized signal, the second synthesized signal, and the radio frequency output signal respectively. In some embodiments of the present application, when the preset synthesizer executes the preset signal synthesis strategy, the preset formula used is as follows: The two arms included in the preset power divider, where the fundamental wave voltage of arm 1 is: , and the fundamental wave voltage of waveguide branch arm 2: , The preset degree of the phase difference between the electric fields of the two arms is 180°, so the fundamental wave signals of the two input signals at the synthesis end are out of phase. Therefore, the output voltage of the fundamental wave signals at the two synthesis ends is: (1) Where .

[0064] Since , where Z is the impedance, P is the power, and v is the voltage, the fundamental wave combined power is: (2) When , P 1,基 = P 2,基= P, .

[0065] Similarly, the second harmonic voltage of arm 1 is: , and the second harmonic voltage of arm 2: , and the voltage at the harmonic synthesis port is: (3) The power at the harmonic synthesis port is: (4) From formulas (2) and (4), it can be known that: When , , When , , therefore, by using the 180° phase difference synthesis of waveguide T-type 4-way power division / synthesis, the fundamental wave synthesis is not affected, and the harmonic synthesis is 0, achieving a good harmonic suppression effect.

[0066] Based on the above calculation formula, the fundamental combined power of the first combined signal corresponding to the preset radio frequency input signal, the combined output voltage of the fundamental signal, the harmonic combined power, the combined output voltage of the harmonic signal, the fundamental combined power of the second combined signal, the combined output voltage of the fundamental signal, the harmonic combined power, the combined output voltage of the harmonic signal, and the fundamental combined power of the radio frequency output signal synthesized based on the first combined signal and the second combined signal, the combined output voltage of the fundamental signal, the harmonic combined power, and the combined output voltage of the harmonic signal can be calculated and determined.

[0067] Through the solution of the present application, the standing wave in the full frequency band ≤ 1.5, and the insertion loss ≤ 0.95, so the combined loss . Additionally, in an example of the present application, 4 11W power divider chips are adopted, and 40W of power is synthesized through a waveguide E-plane T-shaped 4-way combination, and the fundamental combined efficiency can reach . Through comprehensive analysis, the loss of the fundamental combined power is basically the loss in waveguide synthesis transmission. Therefore, the waveguide T-shaped power divider / combiner composed of the preset power divider and the preset combiner has high fundamental power synthesis efficiency, large output power, and has efficient suppression of the second harmonic.

[0068] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The order of execution of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0069] Corresponding to the harmonic suppression method described in the above embodiments, Figure 5 The structural block diagram of the harmonic suppression system provided by the embodiments of the present application is shown. For the convenience of description, only the parts related to the embodiments of the present application are shown.

[0070] Referring to Figure 5 , the system 100 includes: An acquisition module 101, configured to acquire a preset radio frequency input signal; A processing module 102, configured to perform power division processing on the preset radio frequency input signal through a first preset power division strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal. There is a first preset phase difference between the second branch signal and the first branch signal, and a second preset phase difference between the third branch signal and the fourth branch signal; A synthesis module 103, configured to perform signal synthesis processing on the first branch signal and the second branch signal, and the third branch signal and the fourth branch signal by using a preset signal synthesis strategy to obtain a radio frequency output signal that meets the preset signal conditions.

[0071] In one embodiment, the processing module is configured to perform a first power splitting process on the preset radio frequency input signal through a first preset power splitting strategy to obtain a fifth branch signal and a sixth branch signal, where there is a third preset phase difference between the fifth branch signal and the sixth branch signal; and perform a second power splitting process on the fifth branch signal and the sixth branch signal respectively through a second preset power splitting strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal.

[0072] In one embodiment, it further includes: the signals between the two branch arms included in the preset power splitter have a preset phase difference. The performing a first power splitting process on the preset radio frequency input signal through the first preset power splitting strategy to obtain a fifth branch signal and a sixth branch signal includes: The processing module 102 is configured to process the preset radio frequency input signal through the two branch arms of the preset power splitter based on the first preset power splitting strategy to obtain the fifth branch signal and the sixth branch signal.

[0073] In one embodiment, each branch arm in the preset power splitter further includes two branch sub - arms, and the signals between the two branch sub - arms have a preset phase difference, and each branch sub - arm is connected to one power amplifier chip; The processing module 102 is further configured to perform a second power splitting process on the fifth branch signal and the sixth branch signal respectively through the two branch sub - arms of each branch arm in the preset power splitter and the power amplifier chips connected to each branch arm, based on the second preset power splitting strategy, to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal.

[0074] In one embodiment, it further includes: a preset synthesizer, where the preset synthesizer is respectively connected to the output ends of each power amplifier chip, the first branch signal and the second branch signal have opposite phases, and the third branch signal and the fourth branch signal have opposite phases. The synthesizing module 103 is further configured to synthesize the first branch signal and the second branch signal through the preset synthesizer using a preset signal synthesizing strategy to obtain a first synthesized signal; synthesize the third branch signal and the fourth branch signal through the preset synthesizer using a preset signal synthesizing strategy to obtain a second synthesized signal; perform a signal synthesizing process on the first synthesized signal and the second synthesized signal through the preset synthesizer using a preset signal synthesizing strategy to obtain a radio frequency output signal that meets the preset signal conditions, where there is a fourth preset phase difference between the first synthesized signal and the second synthesized signal.

[0075] In one embodiment, a preset synthesizer determines the fundamental wave combined power, the combined output voltage of the fundamental wave signal, the harmonic combined power, and the combined output voltage of the harmonic signal of the first combined signal, the second combined signal, and the radio frequency output signal respectively based on a preset formula in a preset signal synthesis strategy.

[0076] Figure 6 The following is a schematic structural diagram of a terminal device provided in an embodiment of the present application. As Figure 6 shown, the terminal device 6 in this embodiment includes: at least one processor 60 ( Figure 6 only one processor is shown), a memory 61, and a computer program 62 stored in the memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, the steps in any of the above-described embodiments of the harmonic suppression method are implemented.

[0077] The terminal device 6 may be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The terminal device may include, but is not limited to, a processor 60 and a memory 61.

[0078] Those skilled in the art can understand that Figure 6 merely examples of the terminal device 6, which do not constitute a limitation on the terminal device 6, may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, it may also include input / output devices, network access devices, etc.

[0079] The processor 60 may be a central processing unit (CPU), and the processor 60 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0080] The memory 61 may be an internal storage unit of the terminal device 6 in some embodiments, such as a hard disk or memory of the terminal device 6. The memory 61 may also be an external storage device of the terminal device 6 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. equipped on the terminal device 6. Further, the memory 61 may also include both the internal storage unit and the external storage device of the terminal device 6. The memory 61 is used to store an operating device, application programs, a Boot Loader, data, and other programs, such as program codes of the computer program. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0081] It should be noted that for the information interaction, execution process, etc. between the above-mentioned device / units, since they are based on the same concept as the method embodiments of the present application, for their specific functions and the technical effects brought, reference may be specifically made to the method embodiment part, and details will not be elaborated here.

[0082] Those skilled in the art can clearly understand that for the convenience and brevity of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working process of the units and modules in the above device can refer to the corresponding process in the foregoing method embodiments, and details will not be elaborated here.

[0083] The embodiment of the present application also provides a terminal device, which includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor. When the processor executes the computer program, the steps in any of the above method embodiments are implemented.

[0084] The embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0085] An embodiment of the present application provides a computer program product. When the computer program product runs on a terminal device, the terminal device can execute the steps in the above-mentioned method embodiments when executed.

[0086] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above-mentioned method embodiments of the present application, a computer program can be used to instruct relevant hardware to complete. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the device / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal, and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disc, etc.

[0087] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0088] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0089] The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A harmonic suppression method, characterized in that: include: Obtaining a preset radio frequency input signal; The preset RF input signal is power-divided by a first preset power-dividing strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal, wherein a first preset phase difference exists between the second branch signal and the first branch signal, and a second preset phase difference exists between the third branch signal and the fourth branch signal; The first signal and the second signal, as well as the third signal and the fourth signal are synthesized by using a preset signal synthesis strategy to obtain a radio frequency output signal that meets the preset signal condition.

2. The harmonic suppression method according to claim 1, characterized in that: The method of performing power division processing on the preset radio frequency input signal by using the first preset power division strategy to obtain the first branch signal and the second branch signal, as well as the third branch signal and the fourth branch signal includes: Performing a first power division process on the preset radio frequency input signal by using a first preset power division strategy to obtain a fifth branch signal and a sixth branch signal, wherein there is a third preset phase difference between the fifth branch signal and the sixth branch signal; The fifth branch signal and the sixth branch signal are respectively subjected to a second power division process by a second preset power division strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal.

3. The harmonic suppression method according to claim 2, characterized in that: Also includes: The signal phase difference between the two branches included in the preset power divider is a preset degree, and the first power division processing is performed on the preset RF input signal by the first preset power division strategy to obtain the fifth branch signal and the sixth branch signal, including: The preset radio frequency input signal is processed by the two-way branch arms of the preset power divider based on the first preset power division strategy to obtain the fifth branch signal and the sixth branch signal.

4. The harmonic suppression method according to claim 3, characterized in that: Each branch arm in the preset power divider further includes two branch arms, and the signal phase difference between the two branch arms is a preset degree, and each branch arm is connected to a power amplifier chip; The method of performing a second power division process on the fifth branch signal and the sixth branch signal respectively by using a second preset power division strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal includes: By using the two branch arms of each branch arm in the preset power divider and the power amplifier chip connected to each branch arm, the fifth signal and the sixth signal are respectively subjected to the second power division processing based on the second preset power division strategy to obtain the first signal and the second signal, as well as the third signal and the fourth signal.

5. The harmonic suppression method according to claim 4, characterized in that: Also includes: A preset synthesizer is connected to the output end of each power amplifier chip respectively, the first branch signal and the second branch signal have opposite phases, the third branch signal and the fourth branch signal have opposite phases, The method of using a preset signal synthesis strategy to perform signal synthesis processing on the first signal and the second signal, and the third signal and the fourth signal to obtain a radio frequency output signal that meets the preset signal condition includes: The first signal and the second signal are synthesized by the preset synthesizer using a preset signal synthesis strategy to obtain a first synthesized signal; The third signal and the fourth signal are synthesized by the preset synthesizer using a preset signal synthesis strategy to obtain a second synthesized signal; The preset synthesizer uses a preset signal synthesis strategy to perform signal synthesis processing on the first synthesized signal and the second synthesized signal to obtain a radio frequency output signal that meets the preset signal conditions, wherein there is a fourth preset phase difference between the first synthesized signal and the second synthesized signal.

6. The harmonic suppression method according to claim 5, characterized in that: The preset synthesizer determines the fundamental wave synthesized power, the synthesized output voltage of the fundamental wave signal, the harmonic synthesized power, and the synthesized output voltage of the harmonic signal of the first synthesized signal, the second synthesized signal, and the RF output signal, respectively, based on the preset formula in the preset signal synthesis strategy.

7. A harmonic suppression system, characterized in that: include: An acquisition module, used for acquiring a preset radio frequency input signal; a processing module, configured to perform power division processing on the preset RF input signal through a first preset power division strategy to obtain a first branch signal and a second branch signal, and a third branch signal and a fourth branch signal, wherein there is a first preset phase difference between the second branch signal and the first branch signal, and there is a second preset phase difference between the third branch signal and the fourth branch signal; The synthesis module is used to perform signal synthesis processing on the first signal and the second signal, and the third signal and the fourth signal by using a preset signal synthesis strategy to obtain a radio frequency output signal that meets the preset signal conditions.

8. The harmonic suppression method according to claim 6, characterized in that: The processing module is used to perform a first power division processing on the preset RF input signal through a first preset power division strategy to obtain a fifth signal and a sixth signal, and there is a third preset phase difference between the fifth signal and the sixth signal; and perform a second power division processing on the fifth signal and the sixth signal respectively through a second preset power division strategy to obtain a first signal and a second signal, and a third signal and a fourth signal.

9. The harmonic suppression method according to claim 8, characterized in that: Also includes: The signal phase difference between the two branches included in the preset power divider is a preset degree, and the first power division processing is performed on the preset RF input signal by the first preset power division strategy to obtain the fifth branch signal and the sixth branch signal, including: The preset radio frequency input signal is processed by the two-way branch arms of the preset power divider based on the first preset power division strategy to obtain the fifth branch signal and the sixth branch signal.

10. A terminal device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the harmonic suppression method according to any one of claims 1 to 6 when executing the computer program.

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