A high-efficiency power management system for radio frequency power amplifiers

Abstract

The present invention discloses an efficient power management system for a radio frequency power amplifier, which relates to the field of power management technology and includes: a main control display module for realizing the display of liquid crystal display status and parameters, precise adjustment of device gain, data communication and status monitoring; a power supply module for receiving AC power, processing to form a stable DC bus, and providing DC power supply through multiple DC-DC converters; an analog front-end module for processing radio frequency signals, performing pre-amplification, and realizing stable control of the signal amplitude of each channel through voltage adjustment and control circuits; a power amplifier module for multi-stage signal amplification, the output stage of which is composed of high-power switching devices, and is also provided with feedback adjustment and protection circuits for parameter matching and safety protection of power devices. By real-time acquisition of the radio frequency signal envelope and its complex entropy, dynamic adaptive adjustment of the power supply voltage is realized, effectively reducing nonlinear distortion and meeting the demand for high linear output in complex radio frequency environments.

Description

Technical Field

[0001] The present invention relates to the technical field of power management, and in particular to a high-efficiency power management system for a radio frequency power amplifier. Background Art

[0002] With the rapid development of RF communications and microwave technologies, RF power amplifiers (RFPAs) play a vital role in wireless communications, radar, satellite communications, and other fields. Traditional RF power amplifiers and their power management systems typically employ a fixed power supply strategy. Their output voltage and power supply mode struggle to adapt to dynamic changes in input signal amplitude and phase, leading to problems such as low energy utilization, high nonlinear distortion, and inadequate thermal management within certain operating ranges. Furthermore, traditional designs lack real-time adaptive control for multi-channel power balancing and load impedance matching, further limiting the performance of RF power amplifiers in applications requiring high efficiency and low distortion.

[0003] In existing technologies, research on input signal envelope extraction and dynamic power supply voltage modulation has primarily focused on digital signal processing of RF signals, extracting the signal envelope and instantaneous phase through mathematical tools such as the Hilbert transform, and then constructing a power supply voltage modulation scheme. However, these methods generally only perform static mapping of the power supply voltage based on the envelope amplitude, without fully considering the complexity of the RF signal spectrum distribution and the load and thermal issues caused by the instantaneous dynamic changes in the signal. In addition, the coordinated design of multiple DC-DC converters, output matching networks, and feedback regulation circuits still faces technical challenges, making it difficult to achieve precise control of efficient, stable, and low-distortion power supply between modules. Summary of the Invention

[0004] Based on the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a high-efficiency power management system for a radio frequency power amplifier to solve the above-mentioned technical problems.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an efficient power management system for a radio frequency power amplifier, comprising: a main control display module, a power module, an analog front-end module and a power amplifier module;

[0006] The main control display module is used to realize the display of LCD status and parameters, and realize the precise adjustment of equipment gain through the rotary encoder, and perform data communication and status monitoring through the digital interface SPI and USART;

[0007] The power module receives AC power and generates a stable DC bus after EMI filtering, rectification, power factor correction, and high-capacity filtering. It then provides DC power to the main control display module, analog front-end module, and power amplifier module through multiple DC-DC converters.

[0008] The analog front-end module is used to process the RF signal provided by the signal source, pre-amplify the RF signal through the low-noise amplifier circuit, and achieve stable control of the signal amplitude of each channel through the voltage adjustment and control circuit;

[0009] The power amplifier module is used to perform multi-stage amplification on the signal conditioned by the analog front-end module. The output stage is composed of high-power switching devices. It is also equipped with feedback adjustment and protection circuits to perform parameter matching and safety protection on the power devices to prevent damage to the devices due to high voltage and large current.

[0010] The present invention is further configured such that the main control display module includes:

[0011] Digital processing unit, used to realize real-time display and processing of LCD status and parameters;

[0012] A clock management circuit for generating a working clock;

[0013] Address latch and address allocation circuit, used to implement address mapping of external memory and I / O expansion devices;

[0014] Data buffer and I / O expansion circuit for buffering data transmission and expanding external interfaces;

[0015] Storage management unit, including FLASH memory, real-time clock and watchdog components, used for program storage, time recording and abnormality monitoring;

[0016] Digital communication interface, data exchange and status monitoring through digital interfaces SPI and USART;

[0017] User input circuitry, including a rotary encoder, for precise adjustment of the device's gain;

[0018] The LCD driver circuit is used to drive the LCD screen to display the device status and parameters in real time.

[0019] The present invention is further configured such that the power supply module includes:

[0020] AC input and pre-processing unit, used to receive AC power and pre-process the input voltage through EMI filter and surge protection circuit;

[0021] Rectification and power factor correction module, used to convert pre-processed AC power into DC power and improve the power factor through the power factor correction controller;

[0022] The DC bus and filter unit are used to store the rectified DC power and output the DC voltage smoothly and stably through the filter capacitor;

[0023] A multi-channel DC-DC converter unit provides DC power to the main control display module, analog front-end module, and power amplifier module through at least one set of DC-DC converters, wherein each set of DC-DC converters includes a PWM controller, a power switch tube, a freewheeling diode, an inductor, and an output filter capacitor;

[0024] The monitoring and protection control unit monitors the output DC voltage, current and temperature of each DC-DC converter in real time through digital acquisition and control circuits, and automatically adjusts or shuts down the working state of the DC-DC converter when an abnormal state is detected.

[0025] The present invention is further configured such that the analog front-end module includes:

[0026] Low-noise power supply and filtering unit, used for voltage stabilization, noise reduction and filtering of the working power supply;

[0027] The power supply and protection circuit is used to supply power to the low-noise amplifier and perform amplitude limiting and overvoltage protection during the power supply process;

[0028] Low-noise amplifier, used to pre-amplify the RF signal to increase the signal amplitude and system carrier-to-noise ratio;

[0029] Variable gain control circuit, which realizes dynamic adjustment of amplifier gain through digital or analog means, and stably controls the signal amplitude of each channel;

[0030] The signal conditioning and output buffer unit is used to filter, impedance match and buffer the amplified and conditioned signal, and stably output the processed signal to the subsequent module.

[0031] The present invention is further configured such that the power amplification module includes:

[0032] Input signal conditioning unit, used to pre-process the signal from the analog front-end module, perform signal buffering and impedance matching;

[0033] A pre-amplifier circuit is used to perform primary amplification on the pre-processed signal;

[0034] The main power amplifier unit forms the output stage through high-power switching devices and performs multi-stage amplification on the signal after primary amplification;

[0035] Feedback regulation and protection circuit, which monitors and adjusts the output signal in real time through a closed-loop feedback network, performs parameter matching and safety protection on power devices to prevent damage to the devices caused by high voltage and high current;

[0036] The output matching network and filtering unit are used to perform harmonic filtering and impedance matching on the amplified signal, reduce the distortion of the output signal and suppress electromagnetic interference;

[0037] The heat dissipation management and monitoring unit is used to dissipate heat for high-power devices in the main power amplifier unit and to monitor the operating temperature in real time through temperature sensors.

[0038] The present invention is further configured to further include an output module, the output module being connected to the output end of the power amplification module and comprising:

[0039] The output switch unit is used to connect or disconnect the signal output. The output switch unit is connected to the key circuit of the control panel and is used for manual control of the output state;

[0040] The output interface is used to transmit the signal processed by the output switch unit to the external load. The output interface is provided with an impedance matching and filtering network;

[0041] The driving and protection circuit is arranged between the output switch unit and the output interface, and is used to provide a driving signal and realize overcurrent and overvoltage protection functions.

[0042] The present invention is further configured to process a radio frequency signal provided by a signal source, including:

[0043] Define a complex RF signal: ,

[0044] in, for The complex RF signal at time for The time-varying envelope of the moment, for The phase of the moment, is the carrier frequency, is an imaginary number;

[0045] Perform Hilbert transform on the RF signal to obtain the analytical signal: , for The analytical signal at the moment, for The RF signal at the moment, is the Hilbert transform;

[0046] Calculating the time-varying envelope and phase of the complex RF signal according to the analytical signal to obtain the complex RF signal;

[0047] The complex radio frequency signal is normalized, and the envelope complex entropy is calculated based on the normalized complex radio frequency signal.

[0048] The present invention is further configured such that the calculation logic of the time-varying envelope of the complex radio frequency signal is:

[0049] ;

[0050] The calculation logic of the phase of the complex RF signal is: , is the phase of the complex number;

[0051] The normalized calculation logic is: , is the normalized complex RF signal, is the maximum value of the time-varying envelope within the observation window;

[0052] The calculation logic of envelope complex entropy is: , is the envelope complexity entropy, is the number of discrete frequency points, is the normalized amplitude modulation spectrum, is a discrete frequency point; normalized amplitude modulation spectrum:

[0053] , is the Fourier transform, is the signal bandwidth.

[0054] The present invention is further configured to achieve stable control of the signal amplitude of each channel through a voltage adjustment and control circuit, including: calculating the power supply voltage based on the normalized complex RF signal and the envelope complex entropy, and achieving stable control of the signal amplitude of each channel based on the power supply voltage and the control circuit.

[0055] The present invention is further configured as follows:

[0056] ;

[0057] in, for The supply voltage at the moment, and is the maximum and minimum value of the supply voltage, is the envelope compression factor, , is the basic compression factor, is the adjustment coefficient, is the transient overshoot suppression weight, is the envelope change rate sensitivity coefficient.

[0058] The present invention provides an efficient power management system for a radio frequency power amplifier, comprising a main control display module for realizing liquid crystal display status and parameter display, and realizing precise adjustment of device gain through a rotary encoder, and performing data communication and status monitoring through digital interfaces SPI and USART; a power supply module for receiving AC power, forming a stable DC bus through EMI filtering, rectification, power factor correction, and large-capacity filtering, and providing DC power to the main control display module, an analog front-end module, and a power amplifier module through a multi-channel DC-DC converter; the analog front-end module for processing radio frequency signals provided by a signal source, pre-amplifying the radio frequency signals through a low-noise amplifier circuit, and realizing stable control of the signal amplitude of each channel through a voltage adjustment and control circuit; and a power amplifier module for performing multi-stage amplification of the signals conditioned by the analog front-end module, wherein the output stage is composed of high-power switching devices and is further provided with a feedback adjustment and protection circuit for performing parameter matching and safety protection on the power devices to prevent damage to the devices caused by high voltage and high current. The beneficial effects produced include:

[0059] Dynamic Adaptive Power Supply: By performing a Hilbert transform on the RF signal to extract its envelope and phase, and calculating the normalized envelope and envelope complex entropy, the system can capture the dynamic characteristics of the input signal in real time. Using this information, a dynamic power supply voltage formula is constructed, enabling automatic adjustment of the supply voltage to changes in the input signal amplitude, ensuring optimal power supply across different operating ranges, thereby improving overall energy utilization.

[0060] 1. Low distortion and high linearity: Through adaptive parameters such as envelope compression factor, envelope change rate sensitivity coefficient, and transient overshoot suppression weight, the power management system can suppress voltage overshoot and fluctuations caused by sudden changes and nonlinear effects when modulating the supply voltage, effectively reducing the nonlinear distortion of the output signal and maintaining a highly linear output state, meeting the requirements of high-fidelity wireless transmission;

[0061] 2. Adapt to complex RF environments: By using envelope complex entropy as an additional indicator, the power supply voltage modulation logic can adapt to the complex changes in the energy distribution of the input signal in different frequency bands. For the ever-changing RF signals, more sophisticated power management can be achieved, further improving the system's performance in complex RF environments.

[0062] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. In the drawings:

[0064] Figure 1 This is a schematic structural diagram of a high-efficiency power management system for a radio frequency power amplifier according to an exemplary embodiment of the present invention;

[0065] Figure 2 This is a block diagram of the circuit composition of a main control display module of a high-efficiency power management system for a radio frequency power amplifier, shown as an exemplary embodiment of the present invention;

[0066] Figure 3 A first schematic diagram of a power supply module of a high-efficiency power management system for a radio frequency power amplifier is shown as an exemplary embodiment of the present invention;

[0067] Figure 4 A second schematic diagram of a power supply module of a high-efficiency power management system for a radio frequency power amplifier is shown as an exemplary embodiment of the present invention;

[0068] Figure 5 This is a schematic diagram of an analog front-end module of a high-efficiency power management system for a radio frequency power amplifier, showing an exemplary embodiment of the present invention;

[0069] Figure 6 This is a schematic diagram of a power amplification module of a high-efficiency power management system for a radio frequency power amplifier according to an exemplary embodiment of the present invention;

[0070] Figure 7 This is a schematic diagram of an output module of a high-efficiency power management system for a radio frequency power amplifier, showing an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0071] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the various details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0072] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0073] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring the embodiments of the present invention.

[0074] An efficient power management system for RF power amplifiers, such as Figure 1-Figure 7 Shown, including:

[0075] Main control display module, power module, analog front-end module and power amplifier module;

[0076] The main control display module is used to realize the display of LCD status and parameters, and realize the precise adjustment of equipment gain through the rotary encoder, and perform data communication and status monitoring through the digital interface SPI and USART;

[0077] The power module receives AC power and generates a stable DC bus after EMI filtering, rectification, power factor correction, and high-capacity filtering. It then provides DC power to the main control display module, analog front-end module, and power amplifier module through multiple DC-DC converters.

[0078] The analog front-end module is used to process the RF signal provided by the signal source, pre-amplify the RF signal through the low-noise amplifier circuit, and achieve stable control of the signal amplitude of each channel through the voltage adjustment and control circuit;

[0079] The power amplifier module is used to perform multi-stage amplification on the signal conditioned by the analog front-end module. The output stage is composed of high-power switching devices. It is also equipped with feedback adjustment and protection circuits to perform parameter matching and safety protection on the power devices to prevent damage to the devices due to high voltage and large current.

[0080] The present invention is further configured such that the main control display module includes:

[0081] Digital processing unit 201, used to realize real-time display and processing of LCD status and parameters;

[0082] The clock management circuit 202 is used to generate a working clock;

[0083] Data buffer and I / O expansion circuit 203, used for buffering data transmission and expanding external interfaces;

[0084] The storage management unit 204 includes a FLASH memory, a real-time clock, and a watchdog component for program storage, time recording, and abnormality monitoring;

[0085] Digital communication interface 205, for data exchange and status monitoring via digital interfaces SPI and USART;

[0086] User input circuit 206, including a rotary encoder for precise adjustment of device gain;

[0087] The liquid crystal display driving circuit 207 is used to drive the liquid crystal display screen to display the device status and parameters in real time.

[0088] It should be noted that the main control display module may further include an address latch and an address allocation circuit for implementing address mapping between the external memory and the I / O expansion device.

[0089] Specifically, the main control display module is a highly integrated microcontroller unit and display management subsystem, whose main functions are: managing external sensing, control and communication interfaces through the digital processing unit 201, and displaying system status and parameters in real time on the LCD screen; making full use of internal / external resources through circuits such as clock management, address latching, data caching and storage management to achieve unified scheduling of peripherals or expansion interfaces; combining input devices such as rotary encoders or buttons to provide operators or host computers with control methods such as gain adjustment, so as to quickly tune or change equipment parameters; and ensuring the reliability and maintainability of the system in complex environments through means such as real-time clocks, watchdogs and abnormality monitoring.

[0090] The digital processing unit 201 is based on a 32-bit or higher-performance microprocessor (MCU / MPU), which contains a powerful CPU core and a rich set of peripheral controllers, including GPIO, SPI, I²C, and USART. The digital processing unit 201 executes program code and completes real-time task scheduling, including periodically reading sensor data and updating display content; processing user input (rotary encoder, button, or remote communication command) and adjusting device gain or system parameters accordingly; managing data transmission and responding to peripheral interrupts or system calls.

[0091] The clock management circuit 202 includes system clock and reset management and clock generator, which is composed of internal / external crystal oscillators, phase-locked loops (PLLs) and dividers, etc., to provide a unified and stable working clock for the digital processing unit 201 and other functional modules; the clock management circuit 202 generates a high-precision clock signal; and includes functions such as watchdog reset clock and system power-on reset.

[0092] When using external parallel memory or I / O expander, the address latch and address allocation circuit need to latch or decode the CPU address bus to distinguish the program storage area, data storage area and peripheral mapping area; the address latch and address allocation circuit improve access efficiency and ensure that address information is not lost during high-frequency access; and perform chip selection and area division for external expansion ports.

[0093] The data buffer and I / O expansion circuit 203 uses a buffer or a dedicated I / O expansion chip to meet the needs of a large number of digital I / O ports or high-speed data transmission. The data buffer and I / O expansion circuit 203 reduces bus conflicts when directly accessing peripherals; provides more digital input and output ports, and is convenient for connection with liquid crystal displays, rotary encoders and other digital interfaces.

[0094] The storage management unit 204 includes components such as program FLASH, real-time clock (RTC) and watchdog; the FLASH memory is used to store system programs, user parameters and data logs; the RTC provides an accurate time base for recording timestamps or scheduled tasks; the watchdog automatically triggers a reset when the main control program is abnormal or crashes, thereby improving system stability.

[0095] The digital communication interface 205 (SPI / USART) performs external serial communication through the SPI controller and USART controller inside the MCU and the corresponding physical pins. The SPI (Serial Peripheral Interface) exchanges data with high-speed peripherals or external Flash memory. The USART (Universal Synchronous / Asynchronous Receiver / Transmitter) is used for debugging the serial port or communicating with the host computer and other control modules.

[0096] The user input circuit 206 (rotary encoder) includes image rotation / mirroring and dynamic backlight control. It notifies the MCU of the rotation direction and step value through A / B two-phase pulse signals, enabling adjustable gain or other parameters. It converts user rotation operations into digital pulse signals, and the MCU determines the adjustment amplitude based on the pulse quantity and direction. It also enables precise gain setting and rapid parameter traversal.

[0097] The liquid crystal display driver circuit 207 consists of an LCD controller, a frame buffer, and a display interface. A common practice is to integrate the LCD controller inside the MCU or use an external dedicated display control chip; it receives graphic data or register commands sent by the MCU and converts them into row and column scanning signals for the LCD panel; it updates the display interface in real time and intuitively presents information such as system status, input signal strength, and gain value to the user.

[0098] In a feasible embodiment of the present invention, Figure 2 As shown, Figure 2 This is the internal block diagram of the liquid crystal display driver circuit in the main control display module of the present invention. It is integrated into an independent LCD controller chip or the display peripherals of the MCU. It includes: MCUInterface (MCU interface), Frame Buffer (frame buffer), Registers (register group), LCD Controller (row and column scan controller), Rotation / Mirror (image rotation / mirror unit), DBC (Dynamic Backlight Control, dynamic backlight control), System Clock and Reset Mgr (clock and reset management), Clock Generator (clock generator) and LCD Interface (LCD panel parallel / serial interface).

[0099] Specifically, the MCU (digital processing unit) writes pixels to the frame buffer through its internal address latch / allocation circuits and data buffer / I / O expansion circuits (corresponding to 1 and 2, including GPIO, SPI, and USART). The MCU also exchanges status and parameters with the external environment or host computer through the digital communication interface (SPI / USART in 1) and reads or saves configurations from the storage management unit (FLASH / RTC / Watchdog mapped to registers). The Clock and Reset Mgr and Clock Generator provide precise timing for frame buffer readout and LCD controller row and column scanning. The LCD controller retrieves pixel data from the frame buffer according to the resolution and timing configuration in the registers. During the retrieval process, the Rotation / Mirror function dynamically rotates or flips the image, and the DBC adjusts the backlight duty cycle based on the image brightness. Finally, the LCD interface transmits row and column synchronization signals (LFRAME / LLINE / LSHIFT / LDEN), pixel data (LD23:0), and GPIO / PWM signals to actually drive the external LCD panel.

[0100] Through this layered design of "upper-layer MCU → bus / cache / clock → Frame Buffer → register configuration → LCD Controller → Rotation / DBC → LCD Interface", the main control display module can efficiently complete the entire process from data processing to screen display, while taking into account scalability, maintainability and real-time performance.

[0101] The present invention is further configured such that the power supply module includes:

[0102] AC input and pre-processing unit 301, used to receive AC power and pre-process the input voltage through EMI filter and surge protection circuit;

[0103] The multi-channel DC-DC converter unit 302 provides DC power to the main control display module, analog front-end module, and power amplifier module through at least one set of DC-DC converters, wherein each set of DC-DC converters includes a PWM controller, a power switch tube, a freewheeling diode, an inductor, and an output filter capacitor; the rectifier and power factor correction module is used to convert the pre-processed AC power into DC power and improve the power factor through a power factor correction controller;

[0104] Furthermore, the power module package may also include:

[0105] The DC bus and filter unit are used to store the rectified DC power and output the DC voltage smoothly and stably through the filter capacitor;

[0106] The monitoring and protection control unit monitors the output DC voltage, current and temperature of each DC-DC converter in real time through digital acquisition and control circuits, and automatically adjusts or shuts down the working state of the DC-DC converter when an abnormal state is detected.

[0107] Specifically, the power module provides stable, controllable DC power to the system's various functional modules (including the main control and display module, analog front-end module, and power amplifier module) through multi-stage energy conversion and voltage regulation. Its structure includes an AC input and pre-processing unit 301, a rectifier and power factor correction (PFC) module, a DC bus and filtering unit, a multi-channel DC-DC converter unit 302, and a monitoring and protection control unit. This hierarchical design ensures efficient and reliable conversion from high-voltage AC to regulated DC, and incorporates comprehensive protection and monitoring mechanisms.

[0108] The AC input and pre-processing unit 301 incorporates an EMI filter and surge protection circuit at the power input to suppress high-frequency interference from the power grid and prevent transient high voltages at the input from damaging subsequent circuits. The EMI (Electro-Magnetic Interference) filter removes electromagnetic interference from the power grid. Surge protection (such as varistors, gas discharge tubes, or TVS diodes) responds quickly to sudden voltage increases, diverting surge currents and protecting core circuits.

[0109] The rectification and power factor correction (PFC) module converts pre-processed AC power into DC power through a rectifier bridge or active PFC controller. The power factor correction controller also reduces harmonic pollution to the grid and improves the input power factor. Rectification converts AC power into pulsating DC power. PFC (Power Factor Correction) uses a dedicated control chip to automatically adjust the current waveform, ensuring that the input current and voltage are in phase, thereby improving energy utilization.

[0110] The DC bus and filter unit sets a large-capacity filter capacitor or capacitor array at the rectifier output end to form a high-voltage DC bus, and uses a subsequent filter network to smooth the ripple; the filter capacitor can store sufficient electrical energy to reduce the fluctuation of DC voltage caused by transient changes in the load; if the load power is high, multiple electrolytic capacitors or solid-state capacitors with low ESR (equivalent series resistance) can be used in parallel to enhance the instantaneous power supply capability.

[0111] The multi-channel DC-DC converter unit 302 steps down or stabilizes the high-voltage DC bus voltage through independent DC-DC converters, providing different levels of low-noise DC power for each functional module. Each DC-DC converter consists of a PWM controller, a power switch tube, a freewheeling diode, an inductor and an output filter capacitor. Under duty cycle modulation, the output voltage is accurately regulated and can protect itself and the load in the event of overload or short circuit.

[0112] The monitoring and protection control unit uses digital acquisition and control circuits to monitor the output voltage, current, and temperature of each DC-DC converter in real time and communicate with the main control display module. When abnormal conditions such as overcurrent, overvoltage, undervoltage, or overtemperature are detected, the duty cycle of the corresponding DC-DC converter is automatically adjusted or shutdown protection is implemented to prevent the spread of the fault. Data can be uploaded to the main control display module, allowing users to intuitively view the power status and make decisions.

[0113] In a feasible embodiment of the present invention, Figure 3 and Figure 4 As shown, Figure 3 and Figure 4 The implementation of the power supply module in the high-efficiency power management system of the radio frequency power amplifier of the present invention is respectively demonstrated, which includes an AC input and preprocessing unit 301 and a multi-channel DC-DC converter unit 302.

[0114] exist Figure 3 and Figure 4 In the figure, the AC input and pre-processing unit 301 is a potted standard module, which contains a surge protection TVS diode and a parallel EMI filter capacitor to suppress grid spikes and high-frequency interference; the rectification and power factor correction module is immediately connected after the input filter, and converts the pre-processed AC power into pulsating DC through a rectifier bridge.

[0115] Among them, the active PFC control IC cooperates with the external boost inductor and MOSFET to achieve power factor correction; the DC bus and filter unit are composed of large-capacity electrolytic and solid-state capacitors in series and parallel, which smooth the rectification / PFC output and form a stable high-voltage DC bus.

[0116] Moreover, in Figure 3 and Figure 4 In the design, the multi-channel DC-DC converter unit 302 comprises a PWM controller IC, power switches, freewheeling diodes, inductors, and output filter capacitors, forming a buck topology. The monitoring and protection control unit includes voltage sampling at each DC-DC output, optocoupler feedback (REF / A / K / NC blocks), and feedback to the FB pin of the PWM control IC for closed-loop voltage regulation. The MOSFET sampling resistor and COMP / EN pin together implement overcurrent, overvoltage, undervoltage, and overtemperature protection, automatically adjusting the duty cycle or shutting down the output when necessary, and reporting status to the main control display module. This achieves efficient and reliable conversion from high-voltage AC to multi-channel regulated DC, while also providing comprehensive protection and monitoring mechanisms.

[0117] The present invention is further configured such that the analog front-end module includes: a low-noise power supply and filtering unit 401 , a power supply and protection circuit 402 , a low-noise amplifier 403 and a variable gain control circuit 404 .

[0118] Among them, the low-noise power supply and filtering unit 401 is used to stabilize, reduce noise and filter the working power supply;

[0119] The power supply and protection circuit 402 is used to supply power to the low noise amplifier 403 and perform amplitude limiting and overvoltage protection during the power supply process;

[0120] A low noise amplifier 403 is used to pre-amplify the radio frequency signal to increase the signal amplitude and the system carrier-to-noise ratio;

[0121] The variable gain control circuit 404 realizes dynamic adjustment of the amplifier gain through digital or analog means, and stably controls the signal amplitude of each channel;

[0122] In addition, the analog front-end module also includes: a signal conditioning and output buffer unit, which is used to filter, impedance match and buffer the amplified and conditioned signal, and stably output the processed signal to the subsequent module.

[0123] Specifically, the analog front-end module is designed to perform preliminary amplification, protection, and gain control on the input RF signal, providing high-quality signal input for the subsequent power amplifier module or digital processing unit. It includes a low-noise power supply and filtering unit 401, a power supply and protection circuit 402, a low-noise amplifier 403, a variable gain control circuit 404, and a signal conditioning and output buffer unit. The above layered structure ensures high linearity, low noise, and stability from power supply quality, signal coupling, gain adjustment, and final output.

[0124] To meet the stringent power quality requirements of analog circuits, the low-noise power supply and filtering unit 401 utilizes a dedicated low-noise regulator (LDO) or low-noise DC-DC converter. A filtering network, including inductors and capacitors, is added at the input to suppress high-frequency interference or ripple in the power line. This provides a stable and clean operating voltage, reducing power supply noise coupling to high-gain analog stages and ensuring that subsequent amplifiers maintain linearity and low distortion over a wide dynamic range.

[0125] The power supply and protection circuit 402 adds protection elements such as limiting or overvoltage protection diodes at the RF signal input end to prevent large signals or transient spikes from impacting the front-end circuit; the limiting / overvoltage protection clamps the voltage amplitude at the input end to prevent transient high voltage from damaging the op amp or other precision devices.

[0126] The low-noise amplifier 403 includes an amplifier (such as an LNA or an operational amplifier) ​​with good input noise characteristics and gain-bandwidth product (GBW), and is configured with corresponding feedback and bias circuits; it performs primary amplification of weak RF signals to improve signal amplitude and system signal-to-noise ratio (SNR); and reduces the noise contribution of subsequent levels to ensure the overall link signal fidelity.

[0127] Variable gain control circuit 404 combines digital or analog control to adjust gain control components such as attenuators, programmable gate arrays (VGAs), or digital potentiometers. The main control and display module allows online setting of gain parameters via the SPI / I²C / parallel interface. Automatic or manual gain adjustment is performed for different input amplitudes or operating modes, ensuring that each channel's signal amplitude remains within the desired range. In multi-channel systems, this is further used for amplitude balancing and calibration between channels.

[0128] The signal conditioning and output buffer unit further filters (including small LC filtering or active filtering) and impedance matches the signal after gain control, and provides driving capability through an op amp or buffer. Filtering and shaping reduce high-frequency noise, harmonics, or out-of-band components. Impedance matching provides a suitable matching environment for subsequent modules or external loads (such as 50Ω / 75Ω) to reduce reflections. The output buffer reduces the load impact of the subsequent circuit on the amplifier at this stage, maintaining a stable output level.

[0129] In a feasible embodiment of the present invention, Figure 5 As shown, the low-noise power supply and filtering unit 401 includes the inductor, filter capacitors, and decoupling capacitors behind the LDO regulator circuit, providing a stable, low-noise ±12V operating power supply to the entire analog front-end. The power supply and protection circuit 402, comprised of a limiting diode D1 and a TVS (transient voltage suppressor), isolates the DC bias, clamps input peak voltages, and protects against overvoltage surges. The variable gain control (VGA) 404 is located after the input signal. The AFE_INPUT signal passes through the U1 chip. The chip's internal RF signal pins (RF1 / RF2), along with its peripheral feedback capacitors, digital circuits, and controller, dynamically adjust the gain via the MCU and bus control module. The low-noise amplifier (LNA) 403, comprised of the U2 signal conditioning and output buffer unit, its feedback capacitors, resistors, output coupling capacitors, and a 50Ω impedance matching network at the output, smooths and filters the amplified and gain-adjusted signal, providing buffering, drive, and impedance matching. It ensures the complete process of input RF signal from power supply, front-end protection, primary amplification, dynamic gain adjustment to final stable output.

[0130] The present invention is further configured such that the power amplification module includes: an input signal conditioning unit 501 , a main power amplification unit 502 , and an output matching network and filtering unit 503 .

[0131] The input signal conditioning unit 501 is used to pre-process the signal from the analog front-end module, perform signal buffering and impedance matching;

[0132] The main power amplifier unit 502, which forms an output stage through high-power switching devices, performs multi-stage amplification on the signal after primary amplification;

[0133] The output matching network and filtering unit 503 is used to perform harmonic filtering and impedance matching on the amplified signal, thereby reducing the distortion of the output signal and suppressing electromagnetic interference.

[0134] Furthermore, the power amplifier module also includes:

[0135] A pre-amplifier circuit is used to perform primary amplification on the pre-processed signal;

[0136] Feedback regulation and protection circuit, which monitors and adjusts the output signal in real time through a closed-loop feedback network, performs parameter matching and safety protection on power devices to prevent damage to the devices caused by high voltage and high current;

[0137] The heat dissipation management and monitoring unit is used to dissipate heat for high-power devices in the main power amplifier unit and to monitor the operating temperature in real time through temperature sensors.

[0138] Specifically, the power amplifier module, as the core output stage of the present invention, undertakes the critical task of amplifying the RF signal from the analog front-end module to the target power level. To maintain reliability and linearity in high-power and high-voltage environments, the module is divided into the following six functional units, which work together to achieve a high-efficiency, low-distortion, and controllable power amplification process: input signal conditioning unit 501, pre-amplifier circuit, main power amplifier unit 502, feedback regulation and protection circuit, output matching network and filter unit 503, and heat management and monitoring unit;

[0139] The input signal conditioning unit 501 provides a stable, matched signal input for the subsequent amplifier stage through impedance transformation and signal buffering, avoiding mismatch or noise amplification caused by direct coupling between the source end and the high-power stage. Signal buffering uses a buffer amplifier or a simple impedance transformation device to eliminate losses caused by insufficient driving capability of the front-end transmission line or device. Impedance matching: If the subsequent main power amplifier stage is designed with 50Ω or other standard impedance, it ensures that the previous stage signal has good matching within the specified frequency band to reduce reflections and interference.

[0140] The pre-amplifier circuit is located before the main power amplifier unit 502, and uses a low- to medium-power amplifier to initially amplify the signal to reach the driving level required by the main power amplifier; primary amplification: the signal output by the input conditioning unit is increased to an appropriate amplitude, improving the signal-to-noise ratio and linearity of the overall signal chain; bandwidth and linearity optimization: devices optimized for the target frequency band and linearity indicators are used, including RF BJT, LDMOS or GaN devices, to reduce the bandwidth and linearity pressure of the main amplifier stage.

[0141] The main power amplifier unit 502 utilizes a multi-stage amplification topology comprised of high-power switching devices (including LDMOS, GaN FETs, or IGBTs) to achieve high-power amplification of RF signals. Multi-stage amplification utilizes the most appropriate devices and operating points at each amplification stage to progressively increase output power. The output stage withstands the highest voltage and current stresses while providing high-power drive capability to the load. Linearity control combines bias design, impedance matching, and feedback techniques to ensure the output meets the stringent distortion and harmonic requirements of communications or RF systems.

[0142] The feedback regulation and protection circuit establishes a closed-loop feedback loop between the amplifier output and the preceding stage, enabling real-time monitoring and dynamic adjustment of the output signal. It also integrates a safety protection mechanism. This closed-loop feedback detects the output amplitude and phase, compares them with the desired input signal, and controls the amplifier's gain or bias, reducing distortion and stabilizing gain. Overcurrent / overvoltage protection monitors the output current and voltage through sampling resistors or voltage comparators, initiating current limiting or shutdown protection if preset thresholds are exceeded. Safety protection prevents unexpected damage to power devices caused by high voltage and current, thereby extending the life of the device.

[0143] The output matching network and filtering unit 503 uses an LC network, balun, or transmission line transformer to perform final impedance matching and harmonic filtering on the output signal to meet system output port specifications (e.g., 50Ω) and electromagnetic compatibility (EMC) requirements. Harmonic filtering removes second-order and higher-order harmonic energy, reducing out-of-band radiated interference and improving signal quality. Impedance matching ensures optimal transmission efficiency and minimizes reflection coefficient between the output port and the load (e.g., an antenna or subsequent receiving device). Electromagnetic interference suppression suppresses parasitic oscillations and radiated interference during high-power amplification.

[0144] To address the potential high heat dissipation of the main power devices, the thermal management and monitoring unit is equipped with a heat sink, fan, or liquid cooling system, and uses temperature sensors for monitoring. Active cooling is used to quickly dissipate heat during high-power or high-duty-cycle operation, ensuring that the power transistor junction temperature remains within a safe range. Temperature monitoring and early warning issues alarms or automatically reduces power when temperatures are too high, preventing device failure due to thermal reasons.

[0145] In a feasible embodiment of the present invention, Figure 6 As shown, the input signal conditioning unit includes an input signal conditioning unit 501 (BNC input IN) → coupling capacitor → impedance matching → GND bypass network, which is used for coupling capacitor isolation of DC, preventing mutual interference of the front-stage bias, and matching 50Ω input to prevent reflection.

[0146] The front-stage signal control circuit includes the HMC472 or a similar RF amplifier IC, as well as the bias resistors, inductors, and bypass capacitors on its input pins (RF1 / RF2) and output pins (RF3 / RF4), which are used to boost the coupled weak signal to the level required by the driving power stage.

[0147] Moreover, the main power amplifier unit 502 includes four RF power amplifier chips and their respective bias power supplies and input and output matching networks. Through four parallel connections, each channel is responsible for approximately 1 / 4 of the power, and the combined output is as high as the rated output.

[0148] In addition, the feedback regulation and protection circuit includes a sampling resistor, a small resistor in the source or output loop of each amplifier, which is used to detect the output current, and a feedback network: a voltage divider and an RC compensation circuit on the COMP / FB pin, which sends the error signal back to the internal bias regulation of the RF power amplifier chip; when the current or bias is abnormal, the DIS / EN pin is used to limit the current or shut down the amplifier.

[0149] In addition, the output matching network and filtering unit 503 includes a series inductor L and a parallel filter capacitor C after the amplifier output is combined, plus a 50Ω terminal resistor, which is used to filter out the second and higher harmonic components to meet the harmonic suppression requirements.

[0150] It should be noted that the heat dissipation management and monitoring unit includes a heat sink / fan and a temperature sensor to ensure that the temperature of the power tube is controlled under high power output. This is existing technology and is not shown in the figure, so it will not be described in detail here. It realizes the entire set of processing from low-power RF signals to high-power output, and provides comprehensive technical support in amplification, matching, protection and heat dissipation.

[0151] The present invention is further configured to further include an output module, the output module being connected to the output end of the power amplification module and comprising:

[0152] The output switch unit 601 is used to turn on or off the signal output. The output switch unit is connected to the key circuit of the control panel and is used for manual control of the output state.

[0153] The output interface 602 is used to transmit the signal processed by the output switch unit to an external load. The output interface is provided with an impedance matching and filtering network;

[0154] The driving and protection circuit 603 is provided between the output switch unit and the output interface, and is used to provide a driving signal and implement overcurrent and overvoltage protection functions.

[0155] Specifically, the output module, located at the output end of the power amplifier module, is responsible for safely and stably delivering high-power signals to external loads, while also enabling manual control and real-time monitoring of the output status. To achieve this goal, the output module includes an output switch unit 601, an output interface 602, and a drive and protection circuit 603. This modular design facilitates connection to external loads (including antennas and test instruments), while also enabling control of the output status and safety protection via buttons or digital commands.

[0156] The output switch unit 601 uses a power switching device, such as a relay (RE1) or MOSFET, to form a circuit to connect or disconnect the power amplifier output signal. Manual / panel control connects the output switch to the control panel button circuit, allowing the user to manually turn the output on or off when needed, preventing high-power signal output when not ready or under abnormal operating conditions.

[0157] Output interface 602 (impedance matching and filtering network) reduces interference with external devices and ensures signal transmission efficiency by meeting the system impedance standard (commonly 50Ω) and harmonic filtering circuits (capacitors, inductors, or bandpass filters). Impedance matching is used to ensure the best possible match between the output end and the external load (including antennas and measuring instruments) to reduce reflection loss. Filtering and noise reduction suppresses high-order harmonics and electromagnetic interference by configuring LC filters or EMI filters, improving signal quality and reducing interference with the surrounding environment.

[0158] The drive and protection circuit 603 is located between the output switch unit 601 and the output interface 602. It provides stable signals through local drive or control components (including op amps and MOSFET drivers) and provides timely protection against overcurrent and overvoltage conditions. Drive enhancement is used when the output requires greater drive capability; additional drive circuits ensure proper operation of the switching components. Overcurrent / overvoltage protection activates protection mechanisms (including output shutdown, fusing, and warnings) when the output current or voltage exceeds the limit, preventing damage to subsequent equipment or the device itself.

[0159] In a feasible embodiment of the present invention, Figure 7 As shown, the output switch unit 601 includes a relay RE1 (or an optional power MOSFET) and its contacts. The ON / OFF button on the control panel (or the MCU) drives Q1, thereby turning the relay coil on and off. The relay contacts connect / disconnect the amplifier output signal to realize the output switching of manual or digital commands.

[0160] The drive and protection circuit 603 includes a drive transistor Q1, a current limiting / reverse protection diode D1, a sampling resistor (R5–R14) and an RC filter (C2–C10) network, and an ON / OFF control port. Q1 amplifies the button or MCU signal to ensure reliable switching of the relay or MOSFET.

[0161] The output interface 602 includes RC filtering and then inputs into the protection logic. Once the set threshold is exceeded, Q1 of the driving and protection circuit 603 is cut off or an alarm is issued to prevent device damage. The output monitoring circuit operational amplifier circuit, output filter capacitor C and 50Ω load matching resistor are used to ensure that the output matches the 50Ω load of the external monitoring port, reducing reflections; reducing out-of-band interference and improving signal purity; while ensuring that the user can manually or remotely control the output switch, the output module also performs impedance matching and filtering on the output signal, and timely intervenes through the driving and protection circuits under abnormal working conditions to achieve safe and stable output of high-power RF signals to the external load.

[0162] The present invention is further configured to process a radio frequency signal provided by a signal source, including:

[0163] Define a complex RF signal: , for The complex RF signal at time for The time-varying envelope of the moment, for The phase of the moment, is the carrier frequency, is an imaginary number; specifically, a complex RF signal is a signal that mathematically expresses the RF signal in complex form. After being expressed in complex form, the signal contains both amplitude (envelope) and phase information, which can more comprehensively reflect the dynamic characteristics of the RF signal;

[0164] Perform Hilbert transform on the RF signal to obtain the analytical signal: , for The analytical signal at the moment, for The RF signal at the moment, is the Hilbert transform; specifically, is the actual measured RF real-valued signal in the form of , the analytical signal consists of the RF real-valued signal and the Hilbert transformed signal, which is in the form of a complex number and can be used to simultaneously extract the envelope (by taking the modulus) and the instantaneous phase (by finding the angle);

[0165] The time-varying envelope and phase of the complex RF signal are calculated according to the analytical signal to obtain the complex RF signal. The present invention is further configured such that the calculation logic of the time-varying envelope of the complex RF signal is: The calculation logic of the phase of the complex RF signal is: , is the phase of the complex number;

[0166] Normalize the complex RF signal, and calculate the envelope complex entropy based on the normalized complex RF signal. The normalization calculation logic is: , is the normalized complex RF signal, is the maximum value of the time-varying envelope within the observation window;

[0167] The calculation logic of envelope complex entropy is: , is the envelope complexity entropy, is the number of discrete frequency points, is the normalized amplitude modulation spectrum, is a discrete frequency point; normalized amplitude modulation spectrum: , is the Fourier transform, is the signal bandwidth; specifically, the envelope complex entropy is used to characterize the complexity and dynamic characteristics of the envelope signal spectrum. In dynamic power supply systems, the envelope complex entropy serves as the basis for adjusting parameters (including the envelope compression factor), allowing the supply voltage to be adjusted to better adapt to the dynamic characteristics of the signal; the normalized amplitude modulation spectrum reveals the frequency characteristics of the envelope signal—the distribution of energy across various frequency components. By observing the normalized amplitude modulation spectrum, it is possible to determine whether the envelope signal is concentrated at certain frequencies (energy concentration) or evenly distributed (energy dispersion);

[0168] The present invention is further configured to achieve stable control of the signal amplitude of each channel through a voltage adjustment and control circuit, including: calculating the supply voltage based on the normalized complex RF signal and the complex entropy of the envelope, and achieving stable control of the signal amplitude of each channel based on the supply voltage and the control circuit. The present invention is further configured to: , for The supply voltage at the moment, and is the maximum and minimum value of the supply voltage, is the envelope compression factor, , is the basic compression factor, is the adjustment coefficient, is the transient overshoot suppression weight, Specifically, the above calculation logic is based on the normalized envelope of the input signal. and its dynamic characteristics (including spectrum complexity and instantaneous rate of change), adaptively generates real-time supply voltage, and The envelope signal is subjected to nonlinear compression modulation, where the envelope compression factor According to the envelope complexity Dynamic adjustment; through Partially reflects the envelope change rate, using The function performs nonlinear restriction on it to suppress transient overshoot; the above two parts are weighted and then multiplied by And add , ensuring the final Always within the preset supply voltage range; basic compression factor Represents the complexity of the envelope The default compression level is 0, the value range is [1,2], and the adjustment coefficient For control The impact amplitude of the compression factor is in the range of [0.1, 0.5], transient overshoot suppression weight Used to adjust the contribution of the transient regulation part to the overall power supply voltage. The value range is [0.1, 0.5]. The envelope change rate sensitivity coefficient The coefficient for adjusting the sensitivity of the envelope change rate is right To zoom in or out, the value range is [0.5,5]; through the above dynamic supply voltage formula, using the normalized envelope , envelope complex entropy and envelope change rate information, and realizes the adaptive real-time adjustment of the power supply voltage. 、 、 、 ) is determined based on experimental and simulation results to ensure that in actual RF environments, it can maintain high energy efficiency while reducing nonlinear distortion and transient overshoot, thereby significantly improving the overall performance and reliability of the RF power amplifier system.

[0169] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0170] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. A and B can be singular or plural. Furthermore, the character " / " as used herein generally indicates an "or" relationship between the associated objects, but it may also indicate an "and / or" relationship. For specific understanding, please refer to the context.

[0171] In this application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0172] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0173] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0174] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0175] In the several embodiments provided in this application, it should be understood that the disclosed system can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0176] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0177] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0178] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0179] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An efficient power management system for a radio frequency power amplifier, characterized in that: include: Main control display module, power module, analog front-end module and power amplifier module; The main control display module is used to realize the display of LCD status and parameters, and realize the precise adjustment of equipment gain through the rotary encoder, and perform data communication and status monitoring through the digital interface SPI and USART; The power module receives AC power and generates a stable DC bus after EMI filtering, rectification, power factor correction, and high-capacity filtering. It then provides DC power to the main control display module, analog front-end module, and power amplifier module through multiple DC-DC converters. The analog front-end module is used to process the RF signal provided by the signal source, pre-amplify the RF signal through the low-noise amplifier circuit, and achieve stable control of the signal amplitude of each channel through the voltage adjustment and control circuit; processing the RF signal provided by the signal source includes: defining the complex RF signal: , for The complex RF signal at time for The time-varying envelope of the moment, for The phase of the moment, is the carrier frequency, is an imaginary number; the RF signal is transformed by Hilbert to obtain the analytical signal: , for The analytical signal at the moment, for The RF signal at the moment, is a Hilbert transform; a time-varying envelope and a phase of the complex RF signal are calculated according to the analytical signal to obtain a complex RF signal; the complex RF signal is normalized, and the envelope complex entropy is calculated according to the normalized complex RF signal; The calculation logic of the time-varying envelope of the complex RF signal is: The calculation logic of the phase of the complex RF signal is: , is the phase of the complex RF signal; the normalized calculation logic is: , is the normalized complex RF signal, is the maximum value of the time-varying envelope within the observation window; the calculation logic of the envelope complex entropy is: , is the envelope complexity entropy, is the number of discrete frequency points, is the normalized amplitude modulation spectrum, is a discrete frequency point; normalized amplitude modulation spectrum: , is the Fourier transform, is the signal bandwidth; Achieving stable control of the signal amplitude of each channel through a voltage adjustment and control circuit, including: calculating a supply voltage based on the normalized complex RF signal and the complex entropy of the envelope, and achieving stable control of the signal amplitude of each channel based on the supply voltage and the control circuit; , for The supply voltage at the moment, and is the maximum and minimum value of the supply voltage, is the envelope compression factor, , is the basic compression factor, is the adjustment coefficient, is the transient overshoot suppression weight, is the envelope change rate sensitivity coefficient; The power amplifier module is used to perform multi-stage amplification on the signal conditioned by the analog front-end module. The output stage is composed of high-power switching devices. It is also equipped with feedback adjustment and protection circuits to perform parameter matching and safety protection on the power devices to prevent damage to the devices due to high voltage and large current.

2. The high-efficiency power management system for a radio frequency power amplifier according to claim 1, characterized in that: The main control display module includes: Digital processing unit, used to realize real-time display and processing of LCD status and parameters; A clock management circuit for generating a working clock; Address latch and address allocation circuit, used to implement address mapping of external memory and I / O expansion devices; Data buffer and I / O expansion circuit for buffering data transmission and expanding external interfaces; Storage management unit, including FLASH memory, real-time clock and watchdog components, used for program storage, time recording and abnormality monitoring; Digital communication interface, data exchange and status monitoring through digital interfaces SPI and USART; User input circuitry, including a rotary encoder, for precise adjustment of the device's gain; The LCD driver circuit is used to drive the LCD screen to display the device status and parameters in real time.

3. The high-efficiency power management system for a radio frequency power amplifier according to claim 1, characterized in that: The power module includes: AC input and pre-processing unit, used to receive AC power and pre-process the input voltage through EMI filter and surge protection circuit; Rectification and power factor correction module, used to convert pre-processed AC power into DC power and improve the power factor through the power factor correction controller; The DC bus and filter unit are used to store the rectified DC power and output the DC voltage smoothly and stably through the filter capacitor; A multi-channel DC-DC converter unit provides DC power to the main control display module, analog front-end module, and power amplifier module through at least one set of DC-DC converters, wherein each set of DC-DC converters includes a PWM controller, a power switch tube, a freewheeling diode, an inductor, and an output filter capacitor; The monitoring and protection control unit monitors the output DC voltage, current and temperature of each DC-DC converter in real time through digital acquisition and control circuits, and automatically adjusts or shuts down the working state of the DC-DC converter when an abnormal state is detected.

4. The high-efficiency power management system for a radio frequency power amplifier according to claim 1, wherein: The analog front-end module includes: Low-noise power supply and filtering unit, used for voltage stabilization, noise reduction and filtering of the working power supply; The power supply and protection circuit is used to supply power to the low-noise amplifier and perform amplitude limiting and overvoltage protection during the power supply process; Low-noise amplifier, used to pre-amplify the RF signal to increase the signal amplitude and system carrier-to-noise ratio; Variable gain control circuit, which realizes dynamic adjustment of amplifier gain through digital or analog means, and stably controls the signal amplitude of each channel; The signal conditioning and output buffer unit is used to filter, impedance match and buffer the amplified and conditioned signal, and stably output the processed signal to the subsequent module.

5. The high-efficiency power management system for a radio frequency power amplifier according to claim 1, characterized in that: The power amplifier module includes: Input signal conditioning unit, used to pre-process the signal from the analog front-end module, perform signal buffering and impedance matching; A pre-amplifier circuit is used to perform primary amplification on the pre-processed signal; The main power amplifier unit forms the output stage through high-power switching devices and performs multi-stage amplification on the signal after primary amplification; Feedback regulation and protection circuit, which monitors and adjusts the output signal in real time through a closed-loop feedback network, performs parameter matching and safety protection on power devices to prevent damage to the devices caused by high voltage and high current; The output matching network and filtering unit are used to perform harmonic filtering and impedance matching on the amplified signal, reduce the distortion of the output signal and suppress electromagnetic interference; The heat dissipation management and monitoring unit is used to dissipate heat for high-power devices in the main power amplifier unit and to monitor the operating temperature in real time through temperature sensors.

6. The high-efficiency power management system for a radio frequency power amplifier according to claim 1, characterized in that: It also includes an output module, which is connected to the output end of the power amplifier module and includes: The output switch unit is used to connect or disconnect the signal output. The output switch unit is connected to the key circuit of the control panel and is used for manual control of the output state; The output interface is used to transmit the signal processed by the output switch unit to the external load. The output interface is provided with an impedance matching and filtering network; The driving and protection circuit is arranged between the output switch unit and the output interface, and is used to provide a driving signal and realize overcurrent and overvoltage protection functions.

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