Radio frequency microwave power synthesis device
By coordinating the design of a dynamic power adjustment module, a phase matching module, and a reconfigurable filter network, the problems of low efficiency and high complexity of existing RF microwave power combining devices under high power output and broadband operation are solved, and efficient and stable signal synthesis is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING BENYIJIE COMM EQUIP CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-05-19
AI Technical Summary
Existing radio frequency microwave power combining devices are inefficient, have limited bandwidth, and are highly complex in high-power output and broadband operation scenarios, making it difficult to achieve efficient combining.
By employing a collaborative design of a dynamic power adjustment module, a phase matching module, a power amplification module, and a power synthesis module, combined with a reconfigurable filter network and a frequency selective switch matrix, and through integrated chip design, efficient signal amplification and synthesis are achieved.
It improves power combining efficiency, reduces power consumption, reduces signal distortion, achieves high-efficiency power combining over a wide bandwidth, reduces system complexity and size, and improves cost-effectiveness and reliability.
Smart Images
Figure CN224264953U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radio frequency microwave communication technology, and in particular to a radio frequency microwave power combining device. Background Technology
[0002] A radio frequency microwave power combining device is widely used in satellite communications, radar systems, and wireless communication base stations. In satellite communications, it is used to increase transmission power to ensure signal transmission quality; in radar systems, it is used to enhance detection range and accuracy; and in wireless communication base stations, power combining improves coverage and signal strength. Radio frequency microwave power combining technology is key to improving signal transmission quality and system performance, and can significantly enhance signal transmission distance and quality.
[0003] A search revealed Chinese Patent Publication No. CN222621419U, which discloses a radio frequency microwave power combining device, comprising a housing and a combining unit. The housing is made of metal. The combining unit includes a first conductor, several second conductors, and a heat sink. The first conductor is disposed inside the housing and includes a first conductor post and a second conductor post coaxially arranged. One end of the first conductor post is connected to one end of the second conductor post, and the other end of the second conductor post is configured as an output terminal. The other end of the first conductor post is configured to connect to one end of the heat sink, and the other end of the heat sink is configured to connect to the housing. The heat sink is made of metal and has an electrical length of 0.15 to 0.5 wavelengths. Several second conductors are radially distributed along the first conductor, and one end of each second conductor passes through the housing and connects to the first conductor post. The other end of each second conductor is configured as an input terminal. The power combining device provided by this invention has excellent heat dissipation performance and can be applied to high-power combining.
[0004] The aforementioned utility model connects the combining unit and the metal casing by introducing a heat dissipation part, which can transfer the heat generated by the combining unit during operation to the casing in a timely manner, and then dissipate the heat from the casing to the surrounding environment through convection and radiation, thereby reducing the temperature of the power combining device and thus improving its power handling capacity. However, in actual use, the above-mentioned device has problems such as low efficiency, limited bandwidth, high complexity and difficulty in achieving high power combining, especially performing poorly in scenarios that require high power output and broadband operation. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a radio frequency microwave power combining device, which aims to improve the problems of low efficiency, limited bandwidth, high complexity and difficulty in achieving high power combining in the prior art, especially the poor performance in scenarios requiring high power output and broadband operation.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a radio frequency microwave power combining device, comprising an external power supply, an EMC protection module, and a power management module. The external power supply is electrically connected to the EMC protection module, the EMC protection module is connected in series at the input terminal of the power management module, the EMC protection module is electrically connected to a communication module, and the power management module is electrically connected to a signal preprocessing module, a power amplification module, an input coupling and detection module, a frequency selection switch matrix module, a reconfigurable filter network module, a dynamic power adjustment module, a phase matching module, a power combining module, an output coupling and detection module, and an intelligent control module.
[0007] The above technical solutions can improve power quality, ensure the reliability of power supply to each module of the system, reduce faults caused by power interference, realize functions such as signal power and phase adjustment and power synthesis, and ensure the overall performance of the system.
[0008] As a further description of the above technical solution:
[0009] The output of the signal preprocessing module is connected to the input of the power amplification module, the power amplification module is connected to the input coupling and detection module, and the output of the signal preprocessing module is connected to the input of the input coupling and detection module.
[0010] The above technical solution can ensure efficient signal amplification, achieve dual monitoring of input and output signals, avoid overload damage, and improve system reliability.
[0011] As a further description of the above technical solution:
[0012] The input coupling and detection module is signal-connected to the dynamic power adjustment module, the output terminal of the dynamic power adjustment module is signal-connected to the input terminal of the power amplification module, and the output terminal of the power amplification module is signal-connected to the input terminal of the phase matching module.
[0013] The power combining mechanism, which combines dynamic power adjustment algorithm with phase matching network, significantly improves power combining efficiency.
[0014] As a further description of the above technical solution:
[0015] The phase matching module is signal-connected to the power combining module, and the power combining module is signal-connected to the reconfigurable filter network module. The reconfigurable filter network module contains multiple bandpass filters, each corresponding to a specific center frequency and bandwidth.
[0016] The above technical solution allows for preprocessing to optimize signal quality, amplification, and phase calibration to achieve in-phase superposition of multiple signals, thereby improving synthesis efficiency. Furthermore, by switching different filter combinations, filtering and shaping of signals at different frequencies can be achieved.
[0017] As a further description of the above technical solution:
[0018] The reconfigurable filter network module is signal-connected to the frequency selective switch matrix module. The array of the frequency selective switch matrix module is composed of electronic switches, including GaAs MESFETs, CMOS transistors, PIN diode switches, and RF relays. The output terminal of the frequency selective switch matrix module is signal-connected to the input terminal of the output coupling and detection module.
[0019] The above technical solution involves a frequency selective switch matrix composed of a series of precise and controllable electronic switches. It can guide the input signal to the corresponding filter channel according to the instructions of the main control unit, ensuring lossless signal transmission. By using a reconfigurable filter network and a frequency selective switch matrix, the circuit parameters can be quickly adjusted according to different operating frequencies to cover a wide frequency band from low to high frequencies.
[0020] As a further description of the above technical solution:
[0021] The output terminals of both the input coupling and detection module and the output coupling and detection module are signal-connected to the input terminal of the main control module. The main control module is bidirectionally connected to the power management module and bidirectionally connected to the intelligent control module.
[0022] The above technical solution involves real-time acquisition of key parameters of the system's input and output signals, transmission of the data to the main control module, and then coordinated control of multiple power combining devices by the adopted intelligent control algorithm.
[0023] As a further description of the above technical solution:
[0024] The output of the main control module is connected to the input signals of the dynamic power adjustment module, the phase matching module, the reconfigurable filter network module, and the frequency selection switch matrix module, respectively. The main control module is bidirectionally connected to the communication module, and the communication module is bidirectionally connected to external devices.
[0025] Through the above technical solution, the main control module can configure and control the connected functional modules based on the signal parameters fed back by the input coupling and detection module and the output coupling and detection module.
[0026] As a further description of the above technical solution:
[0027] The power amplification module includes multiple power amplifiers, and the phase matching module includes a phase matching network. The multiple power amplifiers, the phase matching network, and the intelligent control module are packaged on a single chip.
[0028] The above technical solution reduces system complexity by leveraging integrated chip design, resulting in a smaller size and lower cost for the power combining device, while also improving reliability and ease of use.
[0029] This utility model has the following beneficial effects:
[0030] 1. In this utility model, the power combining efficiency of the radio frequency microwave power combining device is improved, power consumption is reduced, and signal distortion is reduced by the synergy of the dynamic power adjustment module, phase matching module, power amplification module, and power combining module. By adopting the design of reconfigurable filter network and frequency selective switch matrix, high-efficiency power combining in a wide bandwidth is achieved. Through integrated chip design, the system complexity and size are effectively reduced, and the cost performance and reliability of the entire power combining device are improved.
[0031] 2. In this utility model, the input coupling and detection module and the output coupling and detection module can monitor the signal parameters in real time and then feed them back to the main control module. The feedback mechanism of the main control module and the intelligent control module in a two-way connection realizes the closed-loop control of the system and ensures the stability of long-term operation.
[0032] 3. In this utility model, the EMC protection module can filter out power interference, enabling the power management module to provide stable power supply to different modules, thereby improving the power supply reliability of the system. Through the functional coordination of each module, high-power, high-purity, and flexibly configurable signal output is achieved, while also possessing stable closed-loop control and fault monitoring capabilities. Attached Figure Description
[0033] Figure 1 This is a schematic block diagram of a radio frequency microwave power combining device proposed in this utility model;
[0034] Figure 2 This is a schematic block diagram showing the connection of the power management module of a radio frequency microwave power combining device proposed in this utility model. Detailed Implementation
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0036] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a radio frequency microwave power combining device, comprising an external power supply, an EMC protection module, and a power management module. The external power supply is electrically connected to the EMC protection module, the EMC protection module is connected in series at the input terminal of the power management module, the EMC protection module is electrically connected to a communication module, and the power management module is electrically connected to a signal preprocessing module, a power amplification module, an input coupling and detection module, a frequency selection switch matrix module, a reconfigurable filter network module, a dynamic power adjustment module, a phase matching module, a power combining module, and an output coupling and detection module.
[0037] Specifically, when an external power source is connected, the EMC protection module can filter out common-mode and differential-mode interference on the power line, preventing interference signals from the external power grid from entering the system and avoiding interference with the normal operation of electronic equipment within the system. It can also protect subsequent circuit components from damage caused by transient high-voltage surges. The power supply processed by the EMC protection module can then provide a more stable and pure supply to the power management module. The power management module can then perform voltage conversion and regulation, thereby providing stable power to various modules such as the signal preprocessing module, power amplification module, input coupling and detection module, frequency selection switch matrix module, reconfigurable filter network module, dynamic power adjustment module, phase matching module, power combining module, and output coupling and detection module. Furthermore, it can perform precise power allocation and management according to the different voltage and current requirements of each module.
[0038] Reference Figure 1 The output of the signal preprocessing module is connected to the input of the power amplification module, the power amplification module is connected to the input coupling and detection module, and the output of the signal preprocessing module is connected to the input of the input coupling and detection module.
[0039] Specifically, after the original signal is optimized by the signal preprocessing module, it can be directly sent to the power amplifier module for power enhancement. The clean signal after preprocessing can avoid nonlinear distortion caused by input noise or spurious signals in the power amplifier module, thereby improving amplification efficiency and output signal purity. The input coupling and detection module can couple out a small portion of the signal output from the signal preprocessing module for monitoring. By monitoring the power of this portion of the signal, the signal strength before entering the power amplifier module can be grasped in real time. Through the connection between the power amplifier module and the input coupling and detection module, the amplified signal can be sent back to the input coupling and detection module to verify the gain accuracy and linearity of the amplification link.
[0040] Reference Figure 1The input coupling and detection module is signal-connected to the dynamic power adjustment module; the output of the dynamic power adjustment module is signal-connected to the input of the power amplification module; the output of the power amplification module is signal-connected to the input of the phase matching module; the phase matching module is signal-connected to the power combining module; the power combining module is signal-connected to the reconfigurable filter network module, which contains multiple bandpass filters, each corresponding to a specific center frequency and bandwidth; the reconfigurable filter network module is signal-connected to the frequency selective switch matrix module, which is composed of electronic switches, including GaAs MESFETs, CMOS transistors, PIN diode switches, and RF relays; the output of the frequency selective switch matrix module is signal-connected to the input of the output coupling and detection module.
[0041] Specifically, the input coupling and detection module monitors the power of the pre-processed signal and feeds the data back to the dynamic power adjustment module for real-time adjustment of the input power, preventing overload of the power amplifier module. The dynamic power adjustment module adjusts the signal gain or attenuation in real time based on the feedback data, ensuring the signal entering the power amplifier module is within the optimal input range, improving power amplification efficiency and linearity. The dynamically adjusted signal is then fed into the power amplifier module for power boosting. The phase matching module ensures that the multiple amplified signals maintain phase consistency, preventing energy cancellation during power combining due to phase mismatch and improving power combining efficiency. The high-power signal from the power amplifier module enters the phase matching module, where the signal phase is adjusted to prepare for subsequent power combining. Reconfigurable filtering... The wave network module contains multiple switchable bandpass filters, allowing the filter path to be switched via control signals according to system requirements. The synthesized high-power signal then enters the reconfigurable filter network. By selecting a specific bandpass filter, harmonics, spurious interference, or unwanted frequency band components in the signal are filtered out. Through a frequency selective switch matrix module composed of precision electronic switches, different signal paths can be switched via control signals. The signal filtered by the reconfigurable filter network module is then sent to the frequency selective switch matrix, which selects a specific frequency band for output. The signal selected by the frequency selective switch matrix module is then sent to the output coupling and detection module, where the coupled energy is used to monitor parameters such as the power, frequency, and waveform of the output signal, thereby enabling real-time monitoring of the quality and specifications of the final output signal of the system.
[0042] Reference Figure 1 and 2The output terminals of both the input coupling and detection module and the output coupling and detection module are connected to the input terminals of the main control module. The main control module has a bidirectional communication connection with the power management module and a bidirectional signal connection with the intelligent control module. The output terminals of the main control module are connected to the input terminals of the dynamic power adjustment module, the phase matching module, the reconfigurable filter network module, and the frequency selection switch matrix module, respectively. The main control module has a bidirectional signal connection with the communication module, and the communication module has a bidirectional signal connection to external devices. The power amplification module includes multiple power amplifiers, and the phase matching module includes a phase matching network. Multiple power amplifiers, the phase matching network, and the intelligent control module are packaged on a single chip.
[0043] Specifically, the power management module provides power to the main control module, and the main control module sends control commands to the power management module to manage the power supply. The power management module also needs to report its operating status to the main control module. The main control module can judge the system's operating status based on monitoring data, providing a basis for dynamic adjustment. The intelligent control module uses intelligent control algorithms to deeply analyze the data from the main control module, generating optimized decision adjustments. Then, the main control module sends control commands to various functional modules to coordinate the control of multiple power combining devices. By monitoring the system status in real time and automatically adjusting the power distribution of each device, it can adapt to the power requirements under different operating conditions. Furthermore, the main control module can send the system status and data to external devices through the communication module. External devices can then send commands to the main control module through the communication module, which will parse and adjust the system parameters to remotely control the system, thereby realizing data interaction between the system and external devices.
[0044] Working Principle: First, the EMC protection module reduces performance degradation or malfunctions caused by electromagnetic interference from external power sources, improving the system's electromagnetic compatibility and operational stability. Then, the power management module provides a stable and clean power supply to each module, ensuring stable and reliable operation of the entire system. During system operation, input or output signals may fluctuate due to external interference. Continuous monitoring by the input coupling and detection module and the output coupling and detection module detects abnormal signal changes in a timely manner and feeds these signal parameters back to the main control module. The main control module then sends real-time operating data to the intelligent control module, providing analysis data. The intelligent control module processes the data using intelligent control algorithms and sends optimization commands back to the main control module, triggering corresponding adjustment mechanisms to maintain the overall stability of the system. The main control module can transmit key system data to external devices via the communication module, allowing external devices to monitor the system's operating status in real time without on-site debugging. External devices can then send adjustment commands to the system via a bidirectional signal connection, which are forwarded to the main control module via the communication module. The main control module then executes the specific operations, achieving remote control and improving system flexibility and operational efficiency.
[0045] This radio frequency microwave power combining device employs a multi-stage cascaded power amplifier (PA) configuration, with each PA connected via a phase-matching network to ensure phase consistency and smooth power transition across signals. The device includes a main control unit for dynamically adjusting the operating points of each PA to optimize overall efficiency. At the system level, intelligent control algorithms are used to coordinate the control of multiple power combining devices. By monitoring system status in real time and automatically adjusting the power allocation of each device, it adapts to power demands under different operating conditions. Methodologically, it combines digital predistortion technology with adaptive power control strategies. First, it uses a precise mathematical model to predict and compensate for nonlinear distortion. Then, based on feedback information from the actual output power, it adjusts the PA gain and bias current to achieve efficient and stable power combining. Furthermore, it introduces a reconfigurable filter network and a frequency-selective switching matrix, thus achieving stable and efficient power combining across a wide frequency band from low to high frequencies, significantly expanding the operating bandwidth. To further reduce system complexity, an integrated design approach is adopted, encapsulating multiple power amplifiers, phase-matching networks, and intelligent control modules onto a single chip, achieving miniaturization and high performance through advanced semiconductor processes.
[0046] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A radio frequency microwave power combining device, comprising an external power supply, an EMC protection module, and a power management module, characterized in that: The external power supply is electrically connected to the EMC protection module, which is connected in series at the input of the power management module. The EMC protection module is electrically connected to a communication module, and the power management module is electrically connected to a signal preprocessing module, a power amplification module, an input coupling and detection module, a frequency selection switch matrix module, a reconfigurable filter network module, a dynamic power adjustment module, a phase matching module, a power combining module, an output coupling and detection module, and an intelligent control module.
2. The radio frequency microwave power combining device according to claim 1, characterized in that: The output of the signal preprocessing module is connected to the input of the power amplification module, the power amplification module is connected to the input coupling and detection module, and the output of the signal preprocessing module is connected to the input of the input coupling and detection module.
3. The radio frequency microwave power combining device according to claim 1, characterized in that: The input coupling and detection module is signal-connected to the dynamic power adjustment module, the output terminal of the dynamic power adjustment module is signal-connected to the input terminal of the power amplification module, and the output terminal of the power amplification module is signal-connected to the input terminal of the phase matching module.
4. The radio frequency microwave power combining device according to claim 1, characterized in that: The phase matching module is signal-connected to the power combining module, and the power combining module is signal-connected to the reconfigurable filter network module. The reconfigurable filter network module contains multiple bandpass filters, each corresponding to a specific center frequency and bandwidth.
5. The radio frequency microwave power combining device according to claim 1, characterized in that: The reconfigurable filter network module is signal-connected to the frequency selective switch matrix module. The array of the frequency selective switch matrix module is composed of electronic switches, including GaAs MESFETs, CMOS transistors, PIN diode switches, and RF relays. The output terminal of the frequency selective switch matrix module is signal-connected to the input terminal of the output coupling and detection module.
6. The radio frequency microwave power combining device according to claim 1, characterized in that: The output terminals of both the input coupling and detection module and the output coupling and detection module are signal-connected to the input terminal of the main control module. The main control module is bidirectionally connected to the power management module and bidirectionally connected to the intelligent control module.
7. The radio frequency microwave power combining device according to claim 6, characterized in that: The output of the main control module is connected to the input signals of the dynamic power adjustment module, the phase matching module, the reconfigurable filter network module, and the frequency selection switch matrix module, respectively. The main control module is bidirectionally connected to the communication module, and the communication module is bidirectionally connected to external devices.
8. The radio frequency microwave power combining device according to claim 1, characterized in that: The power amplification module includes multiple power amplifiers, and the phase matching module includes a phase matching network. The multiple power amplifiers, the phase matching network, and the intelligent control module are packaged on a single chip.