Radio frequency power amplifier transmitter

Abstract

The invention discloses a radio frequency power amplifier transmitter. The radio frequency power amplifier transmitter comprises a pulse transmitter and a continuous wave transmitter which are connected with a monitoring system, each of the pulse transmitter and the continuous wave transmitter comprises a power supply module and a BITE module; the continuous wave transmitter further comprises a transmitting monitoring board. Each power supply module receives a first control signal and a second control signal; the BITE module monitors the working state of components in the transmitter, feeds back the working state to the transmitting monitoring board, and outputs a second control signal to the transmitting monitoring board when a fault is monitored; the transmitting monitoring board transmits a monitoring signal from the BITE module to a monitoring system to realize a working state feedback function of the transmitter, and receives a first control signal from the monitoring system and transmits the first control signal to a power supply module in a specified transmitter to turn on / off the power supply module at the same time; the on / off function of the transmitter under the control of a monitoring system is achieved, and the problem that an existing radio frequency power amplifier transmitter is single in signal output type is solved.

Description

Technical Field

[0001] The present invention relates to the field of electronic technologies, and particularly to a radio frequency power amplifier transmitter. Background Art

[0002] The radio frequency power amplifier transmitter can be used as a transmitting unit in radar and data link equipment to achieve power amplification of radar signals and data link signals; it can also be used as a jamming source or test equipment in electronic countermeasure equipment to test the anti-jamming performance of radar or other devices under test, so as to improve the comprehensive anti-jamming ability of the devices under test. It has extensive applications and great potential in optimizing signal-to-noise ratio, anti-noise, anti-clutter, etc. to improve signal quality. Therefore, as the most important component unit in equipment such as radar, data link, and electronic countermeasures, the performance of the radio frequency power amplifier transmitter will have an important impact on the overall performance of the machine.

[0003] At the present stage, the radio frequency power amplifier transmitter has a high degree of customization according to the usage requirements of the equipment, with single functions and signal formats, and cannot simultaneously meet the usage requirements of equipment such as radar, data link, and electronic countermeasures. As the core index of the radio frequency power amplifier transmitter, the output power value, relevant articles or reports show that the output power value is less than 2KW in the VHF working frequency band. In addition, most of the existing radio frequency power amplifier transmitters are integrated, lacking functions such as fault detection, status feedback, credibility check, and abnormal location, which pose a threat to the long-term working stability.

[0004] In the prior art, the invention patent with the patent publication number CN103675764A discloses a fully solid-state multi-channel combined microwave power radar transmitter. In this patent, the synthesizer in the transmitter is used to perform power synthesis on the radio frequency signals provided by multiple power amplifier modules and then output. This synthesizer has a fault self-adaptive function. If a fault occurs in one of the input signals, the synthesizer will automatically switch the internal microwave switch to make the normal input signals all output without loss at the output port of the synthesizer, avoiding the transmission of normal signals to the damaged port and causing power waste, and improving the synthesis efficiency. However, the transmitter in this patent is a single signal. In the text, there are multiple power amplifier modules, not a transmitter with multiple signal formats. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to solve the problems that at the present stage, the radio frequency power amplifier transmitter has a single signal format and lacks fault detection.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] A radio frequency power amplifier transmitter, comprising: a pulse transmitter, a continuous wave transmitter; the radio frequency power amplifier transmitter is connected to a monitoring system; wherein, both the pulse transmitter and the continuous wave transmitter include a power supply module and a BITE module; and the continuous wave transmitter further includes a transmission monitoring board.

[0008] Each power supply module receives a first control signal and a second control signal; the BITE module monitors the operating status of the components inside the transmitter and feeds it back to the transmission monitoring board. When a fault is detected, it outputs a second control signal to the transmission monitoring board.

[0009] The transmission monitoring board sends the monitoring signal from the BITE module to the monitoring system to implement the feedback function of the operating status of the transmitter. At the same time, it receives the first control signal from the monitoring system and sends it to the power supply module in the specified transmitter to turn it on / off, implementing the on / off function of the transmitter under the control of the monitoring system.

[0010] Technical effects: The present invention integrates a pulse transmitter and a continuous wave transmitter at the same time, has pulse or continuous wave operating modes, and the signal patterns include multiple patterns such as linear frequency modulation, non-linear frequency modulation, phase coding, and frequency modulation continuous wave. By freely switching the operating mode and signal pattern, the usage requirements of equipment such as radar, data link, and electronic countermeasure can be taken into account at the same time. The BITE module can implement the credibility check and abnormal positioning functions during the signal transmission process.

[0011] In an embodiment of the present invention, implementing the on / off function of the transmitter under the control of the monitoring system includes:

[0012] When the transmitter is not working, the first and second control signals for each power supply module are invalid.

[0013] When the user needs to start the pulse transmitter or the continuous wave transmitter, the monitoring system sends a first control signal valid instruction to the transmission monitoring board, and this valid instruction is then transmitted by the transmission monitoring board to each power supply module in this type of transmitter, making its first control signal valid and the second control signal invalid to turn on this type of transmitter; when the transmitter is working, each BITE module monitors the operating status of each component in its corresponding transmitter:

[0014] 1) If a fault is detected, each BITE module sends a second control signal valid instruction to the transmission monitoring board, and this valid instruction is then transmitted by the transmission monitoring board to each power supply module of this type of transmitter, making both the first and second control signals valid to turn off this type of transmitter to implement the self-protection function of the transmitter and inform the user.

[0015] 2) If no fault is detected, each BITE module sends a second control signal invalid instruction to the transmission monitoring board, and this invalid instruction is then transmitted by the transmission monitoring board to each power supply module of this type of transmitter, making the first control signal valid and the second control signal invalid to maintain the normal operation of this type of transmitter.

[0016] 3) When the user needs to turn off the transmitter during its normal operation, the monitoring system sends an invalid instruction of the first control signal to the transmitter monitoring board, and this invalid instruction is then transmitted by the transmitter monitoring board to each power module of the transmitter, making both the first control signal and the second control signal invalid to turn off this type of transmitter.

[0017] In an embodiment of the present invention, the BITE module includes a signal sampling module, a noise signal generator, a first mixer, a second mixer, and a signal processing module;

[0018] An intermediate frequency port IF is provided on the signal processing module x , a transmission port T x and a reception port R x ;

[0019] After the signal sampling module samples the working state signal f s issued by the BITE module, it inputs the sampled signal into the first mixer to mix with the determined noise signal f N issued by the noise signal generator, and the first mixer outputs a filtered intermediate frequency signal f t ;

[0020] The intermediate frequency signal f T is directly input into the reception port R x of the signal processing module on the one hand, and on the other hand, it is output from the transmission port T x as the radio frequency input signal f R of the second mixer;

[0021] And, the radio frequency input signal f R is mixed with the determined noise signal f N in the second mixer, and the second mixer outputs a filtered intermediate frequency signal IF and inputs it to the intermediate frequency port IF x .

[0022] In an embodiment of the present invention, the BITE module determines whether an abnormality occurs during the transmission of the working state signal and locates the abnormality through the following method:

[0023] The signal processing module compares the signal received at the transmission port T x with the sampled signal f s , compares the signal received at the reception port R x with the sampled signal f s , and compares the signal received at the intermediate frequency port IF x with the intermediate frequency signal IF, and then obtains the area where an abnormality occurs during the signal transmission process.

[0024] In an embodiment of the present invention, when the signal T x0 received at the port = |f s -f N | and Rx0 = |f s - f N | and IF x0 = |f s - 2f N |, it indicates that no abnormality occurs during the signal transmission process, and each working state signal is reliable; where T x0 is the signal received by the transmitting port T x and R x0 is the signal received by the receiving port R x and IF x0 is the signal received by the intermediate frequency port IF x ;

[0025] When T x0 ≠ |f s - f N |, it indicates that an abnormality occurs in the transmission path before the radio frequency input terminal of the first mixer, and each working state signal is not reliable;

[0026] When T x0 = |f s - f N | and R x0 ≠ |f s - f N |, it indicates that an abnormality occurs in the transmission path between the output terminal of the first mixer and the input terminal of the second mixer, and each working state signal is not reliable;

[0027] When T x0 = |f s - f N | and R x0 = |f s - f N | and IF x0 ≠ |f s - 2f N |, it indicates that an abnormality occurs in the transmission path before the signal enters the second mixer, and each working state signal is not reliable.

[0028] In an embodiment of the present invention, the pulse transmitter includes a pre-stage chassis and a plurality of final-stage chassis;

[0029] The pre-stage chassis amplifies the multiplexed radio frequency pulse signals generated inside it respectively and sends them to the corresponding plurality of final-stage chassis. Each final-stage chassis performs power splitting, amplification, and power combination on the received pulse signal, and outputs an amplified pulse signal and a coupled signal;

[0030] Among them, a power supply module, a BITE module, and a fan module are provided in both the pre-stage chassis and each final-stage chassis.

[0031] In an embodiment of the present invention, a pre-stage chassis includes a pre-stage component, the pre-stage component has a plurality of output ports, and each output port is sequentially connected to an input port of a final-stage component in each final-stage chassis;

[0032] The pre-stage component includes: a digital transceiver module and a plurality of radio frequency amplification channels with the same structure;

[0033] The digital transceiver module generates a plurality of radio frequency pulse signals and sends them to the plurality of radio frequency amplification channels respectively; after each radio frequency amplification channel amplifies a pulse signal from the digital transceiver module to meet the input power requirement of a single final-stage component, it sends them to the corresponding final-stage component respectively.

[0034] In an embodiment of the present invention, the final-stage component of the final-stage chassis includes:

[0035] A band-pass filter II, a 1-to-4 power divider, first to fourth final-stage power amplifiers, first to fourth isolators, a 4-and-1 combiner, and a coupler I;

[0036] The radio frequency signal enters the final-stage component, after passing through the band-pass filter II, it is evenly output as four radio frequency signals through the 1-to-4 power divider to drive the final-stage power amplifiers. After the output of each final-stage power amplifier passes through the isolator respectively, it enters the 4-and-1 combiner for power combination, and after combination, it is sent to the coupler I to output an amplified pulse signal and a coupled signal.

[0037] In an embodiment of the present invention, the continuous wave transmitter amplifies and divides the externally input radio frequency continuous wave signal, and outputs a plurality of amplified continuous wave signals and a coupled signal.

[0038] In an embodiment of the present invention, the continuous wave transmitter includes a continuous wave component;

[0039] The continuous wave component includes: a fixed attenuator IV, a numerically controlled attenuator, a fifth final-stage power amplifier, a coupler II, and a six-way extended coaxial power divider;

[0040] The fifth final-stage power amplifier amplifies the externally input radio frequency continuous wave signal that has passed through the fixed attenuator and the numerically controlled attenuator and then outputs it to the coupler II. After receiving the signal, the coupler II outputs a continuous wave signal and a coupled signal. After receiving the continuous wave signal, the six-way extended coaxial power divider divides it for output.

[0041] Compared with the prior art, the beneficial effects of the present invention are:

[0042] Multiple power amplification modules and power combining techniques are adopted to increase the output power of the RF power amplifier transmitter. A chassis-type design is adopted to improve the working stability of the RF power amplifier transmitter and the assembly and maintenance efficiency. A BITE module and a monitoring system are adopted to realize the working state feedback function of the transmitter, the self-protection function during faults, and the on / off function under the control of the monitoring system.

[0043] The present invention has pulse or continuous wave working modes, and the signal formats include multiple formats such as linear frequency modulation, non-linear frequency modulation, phase coding, frequency modulation continuous wave, etc. The working mode and signal format can be freely switched through the display and control interface, which can meet the usage requirements of equipment such as radar, data link, and electronic countermeasure at the same time. The present invention creatively uses high-power combining technology and adopts a 4-way combining scheme to achieve an output power greater than 3KW in the VHF working frequency band; the interconnection and interoperability between the transmitter and the display and control system are realized through a high-speed communication control interface; it has software / hardware fault monitoring circuits and protection circuits; the BITE module can be used to monitor indicators such as the output power, working pulse width, working duty cycle, and working voltage of all channels in real time, and can also realize the abnormal judgment and positioning functions during the signal transmission process, improving the reliability of the long-term operation of the transmitter and the credibility of the received signals.

[0044] In the FPGA unit of the digital transceiver module of the front-stage component, multiple signal formats such as linear frequency modulation, non-linear frequency modulation, phase coding, and frequency modulation continuous wave are stored. According to the input instructions of the display and control interface, the corresponding parameters are configured, and the set waveform is directly calculated and generated in software. Using the system clock, digital baseband symbols are generated according to the control and timing signals, and through DAC conversion, the digital baseband symbols are converted into intermediate-frequency analog signals, and then through filtering, frequency conversion, and amplification, the required excitation signal is output. Description of the Drawings

[0045] Figure 1 It is a schematic diagram of an RF power amplifier transmitter according to an embodiment of the present invention.

[0046] Figure 2 It is a schematic diagram of the BITE module according to an embodiment of the present invention.

[0047] Figure 3 It is a schematic diagram of the front-stage component according to an embodiment of the present invention.

[0048] Figure 4 It is a schematic diagram of the digital transceiver module according to an embodiment of the present invention.

[0049] Figure 5 It is a schematic diagram of the drive power amplification circuit according to an embodiment of the present invention.

[0050] Figure 6 It is a schematic diagram of the final-stage component according to an embodiment of the present invention.

[0051] Figure 7 Schematic diagram of the continuous wave component according to an embodiment of the present invention.

[0052] Figure 8 Schematic diagram of the structure of the pre-stage component according to an embodiment of the present invention.

[0053] Figure 9 Schematic diagram of the structure of the final-stage component according to an embodiment of the present invention.

[0054] Figure 10 Schematic diagram of the structure of the continuous wave component according to an embodiment of the present invention.

[0055] Figure 11 Schematic diagram of the chassis according to an embodiment of the present invention. Detailed implementation manners

[0056] To facilitate the understanding of the technical solution of the present invention by those skilled in the art, the technical solution of the present invention will be further described below with reference to the accompanying drawings of the specification.

[0057] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0058] Please refer to Figure 1 As shown, the present invention provides a radio frequency power amplifier transmitter, including a pulse transmitter and a continuous wave transmitter. In addition, the radio frequency power amplifier transmitter is connected to a monitoring system. The present invention does not limit the specific monitoring system, as long as it can implement the monitoring function.

[0059] In this embodiment, the pulse transmitter includes a pre-stage chassis and a plurality of final-stage chassis. The pre-stage component has a plurality of output ports, and each output port is sequentially connected to the input port of the final-stage component in each final-stage chassis. The pre-stage chassis amplifies the multiplex radio frequency pulse signals generated inside it and sends them to the corresponding plurality of final-stage chassis respectively. Each final-stage chassis performs power splitting, amplification, and power combination on the received single-path pulse signal, and outputs a single-path amplified pulse signal and a single-path coupled signal. In this embodiment, six final-stage chassis with the same structure are taken as an example for illustration.

[0060] In this embodiment, the continuous wave transmitter has only one continuous wave chassis, including a continuous wave component. The continuous wave component amplifies and performs power splitting on the externally input radio frequency continuous wave signal, and outputs a plurality of amplified continuous wave signals and a single-path coupled signal.

[0061] In this embodiment, both the pulse transmitter and the continuous wave transmitter include a power supply module, a BITE (Built in Test Equipment) module, and a fan module. That is, a power supply module, a BITE module, and a fan module are provided in the pre-stage chassis, each final-stage chassis, and the continuous wave transmitter.

[0062] The pre-stage chassis includes pre-stage components. Each final-stage chassis is provided with final-stage components. The pre-stage components have multiple output ports, and each output port is sequentially connected to the input port of the final-stage components in each final-stage chassis. In addition, the continuous wave transmitter further includes a transmission monitoring board and continuous wave components. The continuous wave transmitter amplifies and distributes the externally input radio frequency continuous wave signal, and outputs multiple amplified continuous wave signals and one coupled signal.

[0063] In this embodiment, each power supply module receives an external mains voltage, a first control signal, and a second control signal, and supplies power to the components in the chassis where it is located. Each fan module dissipates heat from the chassis where it is located. Each BITE module monitors the working states of the components, the power supply module, and the fan module in the chassis where it is located and sends them to the transmission monitoring board. When an abnormality occurs during the transmission of the working state signal, it also sends the abnormal position information to the transmission monitoring board. When one or more of the component over-temperature fault, the power supply module over-voltage / under-voltage fault, and the fan operation fault occur, it also outputs a second control signal to the transmission monitoring board.

[0064] The transmission monitoring board receives the monitoring signals from the BITE modules in each chassis and sends them to the monitoring system to implement the working state feedback function of the transmitter. It also receives the second control signal from the BITE module and sends it to the power supply module in the faulty chassis to turn it off, to implement the self-protection function when the transmitter fails. It also receives the first control signal from the monitoring system and sends it to the power supply module in the specified chassis to turn it on / off, to implement the on / off function of the transmitter under the control of the monitoring system.

[0065] It should be noted that the BITE module monitors the components in the chassis where it is located, which undoubtedly refers to the pre-stage components in the pre-stage chassis, the final-stage components in each final-stage chassis, and the continuous wave components in the continuous wave transmitter.

[0066] In an embodiment of the present invention, the first control signal is sent by the monitoring system, and the second control signal is sent by each BITE module. The first and second control signals jointly control each power supply module. Specifically:

[0067] When the transmitter is not working, the first and second control signals of each power supply module are both invalid.

[0068] When the user needs to start a certain type of transmitter (here refers to a pulse transmitter or a continuous wave transmitter), the monitoring system sends a first control signal valid instruction to the transmitter monitoring board, and this valid instruction is then transmitted by the transmitter monitoring board to each power module of this type of transmitter, making the first control signal valid and the second control signal invalid to turn on this type of transmitter.

[0069] When the transmitter is working, each BITE module monitors the working states of the components, power supply, and fan in its chassis:

[0070] 1) If a fault is detected, each BITE module sends a second control signal valid instruction to the transmitter monitoring board, and this valid instruction is then transmitted by the transmitter monitoring board to each power module of this type of transmitter, making both the first and second control signals valid to turn off this type of transmitter to achieve the self - protection function of the transmitter and inform the user.

[0071] 2) If no fault is detected, each BITE module sends a second control signal invalid instruction to the transmitter monitoring board, and this invalid instruction is then transmitted by the transmitter monitoring board to each power module of this type of transmitter, making the first control signal valid and the second control signal invalid to maintain the normal operation of this type of transmitter.

[0072] 3) When the user needs to turn off the transmitter during its normal operation, the monitoring system sends a first control signal invalid instruction to the transmitter monitoring board, and this invalid instruction is then transmitted by the transmitter monitoring board to each power module of the transmitter, making both the first and second control signals invalid to turn off this type of transmitter.

[0073] Please refer to Figure 2 As shown, in an embodiment of the present invention, the BITE module includes a signal sampling module, a noise signal generator, a first mixer, a second mixer, and a signal processing module. An intermediate - frequency port IF is provided on the signal processing module x , a transmission port T x and a reception port R x .

[0074] After the signal sampling module samples the working - state signal f s sent by the BITE module, it inputs it into the first mixer to mix with the determined noise signal f N sent by the noise signal generator. The first mixer outputs a filtered intermediate - frequency signal f T .

[0075] The intermediate - frequency signal f T is directly input into the reception port R x of the signal processing module on the one hand, and on the other hand, it is output from the transmission port T x as the radio - frequency input signal f R of the second mixer.

[0076] And, the radio frequency input signal f R is mixed with the determined noise signal f N in Mixer 2. Mixer 2 outputs the filtered intermediate frequency signal IF and inputs it to the intermediate frequency port IF x .

[0077] In this embodiment, the realization of the abnormal positioning function is as follows: The signal processing module compares the signal received at the transmission port T x with the sampling signal f s , compares the signal received at the reception port R x with the sampling signal f s , and compares the signal received at the intermediate frequency port IF x with the intermediate frequency signal IF, and then obtains the area where an abnormality occurs during the signal transmission process.

[0078] In this embodiment, when the signal T received at the port x0 =|f s -f N | and R x0 =|f s -f N | and IF x0 =|f s -2f N |, it indicates that no abnormality occurs during the signal transmission process, and the signals of each working state are credible. Among them, T x0 is the signal received at the transmission port T x , R x0 is the signal received at the reception port R x , and IF x0 is the signal received at the intermediate frequency port IF x .

[0079] When T x0 ≠|f s -f N |, it indicates that an abnormality occurs in the transmission path before the radio frequency input end of Mixer 1, and the signals of each working state are not credible.

[0080] When T x0 =|f s -f N | and R x0 ≠|f s -f N |, it indicates that an abnormality occurs in the transmission path between the output end of Mixer 1 and the input end of Mixer 2, and the signals of each working state are not credible.

[0081] When T x0 =|f s -f N | and R x0 =|fs -f N | and IF x0 ≠ |f s -2f N |, it indicates that an abnormality occurs in the transmission path before the input mixer two, and the working state signals are not reliable.

[0082] In this embodiment, shielded cables are used for all transmission paths connected to the upper ports of the signal processing module, and the interference occurring on this path can be approximately ignored. By controlling the sampling frequency of the signal sampling module, the monitoring frequency of the abnormality location can be controlled.

[0083] Please refer to Figure 3 As shown, in an embodiment of the present invention, the pre-stage component includes: a digital transceiver module and multiple radio frequency amplification channels with the same structure. Each radio frequency amplification channel includes: a band-pass filter one, a fixed attenuator two, and a drive power amplification circuit.

[0084] In this embodiment, the digital transceiver module generates multiple radio frequency pulse signals and sends them to the multiple radio frequency amplification channels respectively. After each radio frequency amplification channel amplifies one pulse signal from the digital transceiver module to meet the input power requirement of the single-stage component, it sends them to the corresponding single-stage component respectively.

[0085] Please refer to Figure 4 As shown, in this embodiment, in the FPGA unit of the digital transceiver module, multiple signal patterns such as linear frequency modulation, non-linear frequency modulation, phase coding, and frequency-modulated continuous wave are stored. According to the input instructions on the display and control interface, the corresponding parameters are configured, and the set waveform is directly calculated and generated in software. Using the system clock according to the control and timing signals, digital baseband symbols are generated, and through DAC conversion, the digital baseband symbols are converted into intermediate-frequency analog signals, and then through filtering, frequency conversion, and amplification, the required excitation signal is output.

[0086] Please refer to Figure 5 As shown, in this embodiment, the drive power amplification circuit includes: a gain equalization circuit, a fixed attenuator two, a power amplifier P1, a fixed attenuator three, a temperature compensation circuit, and a power amplifier P2. The gain equalization circuit is used to improve the flatness of the transmitter output power, and the temperature compensation circuit is used to suppress the influence of the ambient temperature on the transmitter output power. In this embodiment, the drive power amplification circuit has six ports: one pulse signal input port, four power amplifier power supply ports, and one pulse signal output port; the pulse signal output port is connected to the input port of the single-stage chassis.

[0087] Please refer to Figure 6As shown in the figure, in an embodiment of the present invention, the final-stage component adopts a four-tube synthesis scheme, including a band-pass filter II, a 1-to-4 power divider, first to fourth final-stage power amplifiers, first to fourth isolators, a 4-to-1 synthesizer, and a coupler I.

[0088] In this embodiment, the RF signal enters the final-stage component. After passing through the band-pass filter II, it is evenly output into four RF signals through the 1-to-4 power divider to drive the final-stage power amplifiers. The output power of each final-stage power amplifier is greater than 1200W. After passing through the isolators respectively, they enter the 4-to-1 synthesizer for power synthesis, and the output power is greater than 3KW.

[0089] In this embodiment, the first to fourth final-stage power amplifiers are exactly the same, and the first to fourth isolators are exactly the same; the 1-to-4 power divider receives a single-path RF pulse signal from the previous-stage component, divides its power, and sends it to the four final-stage power amplifiers respectively. The four final-stage power amplifiers amplify the received pulse signals and send them to the 4-to-1 synthesizer through the four isolators. The 4-to-1 synthesizer synthesizes the four received pulse signals and sends them to the coupler I. The coupler I outputs a single amplified pulse signal and a coupled signal after receiving this signal.

[0090] It should be noted that the present invention does not limit the specific structures of each module and each circuit, as long as the required functions are satisfied.

[0091] Please refer to Figure 7 As shown in the figure, in an embodiment of the present invention, the continuous-wave component includes: a fixed attenuator IV, a numerically controlled attenuator, a fifth final-stage power amplifier, a coupler II, and a six-way extended coaxial power divider.

[0092] In this embodiment, the fifth final-stage power amplifier amplifies the externally input RF continuous-wave signal that has passed through the fixed attenuator IV and the numerically controlled attenuator and then outputs it to the coupler II. The coupler II outputs a single continuous-wave signal and a coupled signal after receiving this signal. The six-way extended coaxial power divider receives the continuous-wave signal and divides its power for output.

[0093] Please refer to Figures 8 to 10 As shown in the figure, in an embodiment of the present invention, the schematic external views of the previous-stage component, the final-stage component, and the continuous-wave component. When the previous-stage component, the final-stage component, and the continuous-wave component are installed, thermal conductive silicone grease is applied to their bottom surfaces. When each power amplifier in the previous-stage component, the final-stage component, and the continuous-wave component is installed, indium sheets are added to their bottom surfaces to enable the transmitter to meet the air-cooled heat dissipation conditions.

[0094] As Figure 11 shown, an embodiment of the present invention discloses a schematic diagram of a single chassis in the transmitter. Each chassis is moisture-proof, salt-fog-proof, and mildew-proof.

[0095] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0096] The above-described embodiments merely represent the implementation manners of the invention. The protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention.

Claims

1. A radio frequency power amplifier transmitter, characterized in that: include: Pulse transmitter, continuous wave transmitter; the radio frequency power amplifier transmitter is connected to the monitoring system; wherein the pulse transmitter and the continuous wave transmitter are both included in the power module and the BITE module; and the continuous wave transmitter also includes a transmission monitoring board; Each power module receives a first control signal and a second control signal; the BITE module monitors the working status of the internal components of the transmitter and feeds it back to the transmitter monitoring board, and when a fault is detected, outputs a second control signal to the transmitter monitoring board; The transmitter monitoring board receives the monitoring signal from the BITE module and sends it to the monitoring system, realizing the working status feedback function of the transmitter, and at the same time receives the first control signal from the monitoring system and sends it to the power module in the designated transmitter to turn it on / off, realizing the on / off function of the transmitter under the control of the monitoring system.

2. The radio frequency power amplifier transmitter according to claim 1, characterized in that: Realize the transmitter on / off function under the control of the monitoring system, including: When the transmitter is not working, the first and second control signals to each power module are invalid; When the user needs to start the pulse transmitter or continuous wave transmitter, the monitoring system sends a valid instruction of the first control signal to the transmitter monitoring board, and the valid instruction is then transmitted by the transmitter monitoring board to each power module in the transmitter, so that the first control signal is valid and the second control signal is invalid to start the transmitter; when the transmitter is working, each BITE module monitors the working status of each component in the transmitter where it is located: 1) If a fault is detected, each BITE module sends a second control signal valid instruction to the transmitter monitoring board, and the effective instruction is then transmitted by the transmitter monitoring board to each power module of the transmitter, so that the first and second control signals are both valid to shut down the transmitter to realize the self-protection function of the transmitter, and inform the user; 2) If no fault is detected, each BITE module sends a second control signal invalidation instruction to the transmitter monitoring board, and the invalidation instruction is then transmitted by the transmitter monitoring board to each power module of the transmitter, so that the first control signal is valid and the second control signal is invalid to maintain the normal operation of the transmitter; 3) When the user needs to turn off the transmitter when it is working normally, the monitoring system sends a first control signal invalid instruction to the transmitter monitoring board, and the invalid instruction is then transmitted by the transmitter monitoring board to each power module of the transmitter, making the first control signal and the second control signal invalid to turn off the transmitter.

3. The radio frequency power amplifier transmitter according to claim 1, characterized in that: The BITE module includes a signal sampling module, a noise signal generator, a mixer 1, a mixer 2, and a signal processing module; The signal processing module is provided with an intermediate frequency port IF x , Send port T x and receiving port R x ; The signal sampling module sends a working status signal f to the BITE module s After sampling, it is input into the mixer and the determined noise signal f sent by the noise signal generator. N Mixing, mixer 1 outputs the filtered intermediate frequency signal f T ; Intermediate frequency signal f T On the one hand, the receiving port R of the signal processing module is directly input x On the other hand, from the sending port T x The output is used as the RF input signal f of mixer 2 R ; And, the RF input signal f R and determine the noise signal f N Mixing is performed in mixer 2, and mixer 2 outputs the filtered intermediate frequency signal IF, which is input to the intermediate frequency port IF. x .

4. The radio frequency power amplifier transmitter according to claim 3, characterized in that BI The TE module determines whether an abnormality occurs during the transmission of the working status signal and locates the abnormality in the following ways: The signal processing module sends the signal to port T x The received signal and the sampled signal f s Compare, receive port R x The received signal and the sampled signal f s Comparison, intermediate frequency port IF x The received signal is compared with the intermediate frequency signal IF to determine the area where the abnormality occurred during the signal transmission process.

5. The radio frequency power amplifier transmitter according to claim 4, characterized in that: When the port receives the signal T x0 =|f s -f N | and R x0 =|f s -f N | and IF x0 =|f s -2f N |, indicating that no abnormality occurs during signal transmission and the working status signals are credible; among them, T x0 For sending port T x The received signal, R x0 For receiving port R x The received signal, IF x0 IF is the intermediate frequency port x The received signal; When T x0 ≠|f s -f N |, indicating that an abnormality occurs in the transmission path before the mixer-RF input terminal, and the working status signals are unreliable; When T x0 =|f s -f N | and R x0 ≠|f s -f N |, indicating that an abnormality occurs in the transmission path between the output end of mixer 1 and the input end of mixer 2, and the working status signals are unreliable; When T x0 =|f s -f N | and R x0 =|f s -f N | and IF x0 ≠|f s -2f N |, indicating that an abnormality occurs in the signal transmission path before the input mixer 2, and the working status signals are unreliable.

6. The radio frequency power amplifier transmitter according to claim 1, characterized in that: The pulse transmitter includes a front-stage chassis and a plurality of final-stage chassis; The front-stage chassis amplifies the multiple RF pulse signals generated inside it and sends them to the corresponding multiple final-stage chassis. Each final-stage chassis performs power division, amplification and power synthesis on the received pulse signal, and outputs an amplified pulse signal and a coupled signal. Among them, a power module, a BITE module and a fan module are arranged in the front-stage chassis and each final-stage chassis.

7. The radio frequency power amplifier transmitter according to claim 6, characterized in that: The front-stage chassis includes a front-stage component, and the front-stage component has a plurality of output ports, each of which is sequentially connected to an input port of a final-stage component in each final-stage chassis; The front stage components include: a digital transceiver module and a multi-channel RF amplification channel with the same structure; The digital transceiver module generates multiple RF pulse signals and sends them to multiple RF amplification channels respectively; each RF amplification channel amplifies a pulse signal from the digital transceiver module to meet the input power requirement of a single-channel final-stage component, and then sends them to the corresponding final-stage component respectively.

8. The radio frequency power amplifier transmitter according to claim 6, characterized in that: The final stage components of the final stage chassis include: a second bandpass filter, a 1-to-4 power divider, first to fourth final stage power amplifiers, first to fourth isolators, a 4-and-1 combiner and a coupler; The RF signal enters the final stage component, passes through bandpass filter 2, and then outputs four RF signals on average through a 1-to-4 power divider to drive the final stage power amplifier. Each output of the final stage power amplifier passes through an isolator and enters the 4 and 1 synthesizer for power synthesis. After synthesis, it is sent to coupler 1 to output an amplified pulse signal and a coupled signal.

9. The radio frequency power amplifier transmitter according to claim 1, characterized in that: The continuous wave transmitter amplifies and performs power division processing on the externally input RF continuous wave signal, and outputs multiple amplified continuous wave signals and one coupled signal.

10. The radio frequency power amplifier transmitter according to claim 9, characterized in that: The continuous wave transmitter includes a continuous wave assembly; The continuous wave components include: a fourth fixed attenuator, a digitally controlled attenuator, a fifth final power amplifier, a second coupler and a six-way extended coaxial power divider; The fifth final-stage power amplifier amplifies the externally input RF continuous wave signal after passing through the fixed attenuator and the digitally controlled attenuator and outputs it to coupler 2. After receiving the signal, coupler 2 outputs a continuous wave signal and a coupled signal. The six-way extended coaxial power divider receives the continuous wave signal and performs power division output on it.

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