35 results about "Microwave power amplifiers" patented technology

The invention discloses a multi-mode ultra-wideband continuously adjustable microwave power amplifier circuit, and belongs to the technical field of microwave integrated circuits. Switching between the ultra wide band and multiple communication frequency bands can be realized by adjusting the control voltage and the drain electrode power supply circuit of the pre-stage circuit, and the center frequency of the communication frequency bands can be independently designed. And the center frequency of the communication frequency band can be changed by changing the values of the capacitor and the inductor in the continuous adjustable branch knot and the inductor in the drain power supply circuit of the pre-stage circuit. Through on-chip voltage and external voltage switching control, mode switching of the ultra wide band and multiple communication frequency bands can be realized, and the problems that the ultra wide band and the communication frequency bands of the high-performance power amplifier can be switched and the communication frequency is continuously adjustable are solved.

The invention provides a radio frequency microwave power amplifier over-standing wave protection system and a protection method thereof. The system comprises a bidirectional coupling module, a dual-path detection module, a signal processing module and a protection execution module, wherein the bidirectional coupling module is used for collecting a forward radio frequency power analog signal and a reverse radio frequency power analog signal; the dual-path detection module is used for generating a forward detection voltage analog signal based on the forward radio frequency power analog signal and generating a reverse detection voltage analog signal based on the reverse radio frequency power analog signal; the signal processing module is used for generating an actual standing-wave ratio based on the forward detection voltage analog signal and the reverse detection voltage analog signal, and generating a control protection signal according to the actual standing-wave ratio; and the protection execution module is used for performing power-off protection on the to-be-protected radio frequency microwave power amplifier based on the control protection signal. The problem that an existing radio frequency microwave power amplifier over standing wave protection scheme cannot be suitable for complex application scenes can be solved.

Embodiments disclosed herein may include a method for impedance match tuning. In an embodiment, the method includes setting a pin depth of a pin inserted into a hole in a dielectric resonator antenna (DRA) to adjust an input impedance of the DRA to match a load impedance of the DRA at a resonant frequency of the DRA. In an embodiment, the method further includes tuning a frequency of a microwave power amplifier that is electrically coupled to the microwave frequency to match the resonant frequency of the DRA. In an embodiment, the method further includes converting the load impedance of the DRA to a characteristic impedance of a coaxial transmission line with an impedance transformer, wherein the impedance transformer is electrically coupled between the microwave power amplifier and the DRA.

The invention discloses a method for repairing a microwave power amplifier module, which belongs to the field of microelectronic module repairing methods and comprises the following steps of: 1, removing a cover to process the module and visually inspecting internal faults; step 2, positioning a fault point through electrical characteristic test, including detection of gain, flatness and power indexes; step 3, carrying out plasma cleaning on the module; 4, replacing a damaged chip or adjusting circuit parameters to repair a fault; step 5, performing circuit function preliminary test on the repaired module; sixthly, conducting internal visual inspection on the states of welding spots and components; step 7, sealing a cover and finishing tin soldering operation; and step 8, self-checking the quality of the welding surface and the cleanliness of the cavity after sealing the cover. According to the method, the problems of low repair precision, poor process compatibility and high cost in the prior art are solved through a standardized process, and the module repair efficiency and reliability are improved.

The utility model discloses a kind of microwave power amplifiers for 5G communication, it is related to 5G communication equipment technical field, to solve the technical problem that current installation angle is inconvenient to adjust, leading to microwave power amplifier cannot be in optimum working state under complex environment, including bottom plate, the top of the bottom plate is fixedly installed with two bearing seats, two the bearing seat between fixedly connected with microwave power amplifier main body, the top of the bottom plate one side is fixedly installed with the adjusting assembly of driving bearing seat rotation, the middle part of each the bearing seat is fixedly provided with the connecting rod for and microwave power amplifier main body connection, the utility model is connected by setting adjusting assembly, rotating adjusting screw can drive rack to move, rack and gear meshing drive bearing seat and microwave power amplifier main body rotation, realize multi-angle adjustment, with in different complex environment Flexible adjustment installation angle, easy to operate, the advantage that structure is stable.

The application provides a replaceable stacked beacon solid-state power amplifier device, which comprises a primary power module, a secondary power module and a microwave power amplifier module, the three modules are connected through an adapter socket and are stacked and assembled, the primary power module comprises an EMI filter circuit, a DC / DC conversion circuit and a relay control circuit, which are used for converting a bus voltage into gate and drain voltages required by a power amplifier tube, the secondary power module comprises a negative voltage protection circuit, a surge suppression circuit, a voltage distribution circuit, a telemetry acquisition circuit and an automatic gain control circuit, wherein the voltage converted by the primary power module is provided to each component in the microwave power amplifier module through the voltage distribution circuit, the device disclosed by the application divides the function of the beacon solid-state power amplifier into general independent modules, and has the characteristics of strong replaceability and strong universality.

Provided is a 10W power amplifier for Ka band. The power amplifier includes, a drive amplifier; an intermediate stage amplifier composed of two transistors; a final stage amplifier composed of 4 transistors; a GCPW, waveguide, and a first spatial combiner unit which are sequentially connected between the drive amplifier and the intermediate stage amplifier to divide a signal output from the drive amplifier and provide the divided signal to the intermediate stage amplifier; a second spatial combiner unit, a waveguide divider, and a third spatial combiner unit which are sequentially connected between the intermediate stage amplifier and the final stage amplifier to divide signals output from the intermediate stage amplifier and provide the divided signals to the final stage amplifier; and a fourth spatial combiner unit and a waveguide combiner which are sequentially connected to the output terminal of the final stage amplifier to combine signals output from the final stage amplifier and finally output the combined signals.

The present invention discloses a pulse power multiplier type microwave power amplifier, which includes a pre-stage amplification matching circuit, a final-stage transistor, a bias circuit, a matching circuit, and a time delay circuit. The pre-stage amplification matching circuit, the final-stage transistor, the matching circuit, and the time delay circuit are connected in sequence along the microwave signal transmission direction. The matching circuit provides matching between the final-stage transistor and the time delay circuit, and the time delay circuit has a time delay effect on the signal with a step of one pulse period. When adjacent k pulse signals pass through the time delay circuit, time delays with a decreasing period of one cycle are sequentially generated, so that the peaks of consecutive k pulses are superimposed at the output end, and a saturated output power k times the original is output. Different saturated output powers are output when k takes different values. The present invention has the characteristics of high saturated output power and adjustable saturated output power, which helps to reduce the complexity and volume of components and is worthy of promotion in the industry.

The application discloses a power amplifier without impedance detection and belongs to the technical field of microwave power amplifiers. The power amplifier comprises a power amplifier module, a mismatched impedance correction network module and a circularly polarized radio frequency antenna module. The power amplifier is used for amplifying a power signal. The multi-port mismatched impedance correction network is used for correcting mismatched impedance under a certain mismatched amplitude to a certain fixed impedance, so that the purpose of resisting mismatch is achieved. The radio frequency antenna is used for transmitting the radio frequency power signal to a radio frequency space through the antenna. The application can complete impedance correction without a feedback impedance calculation network. The application can complete mismatched impedance correction of any phase, and the performance loss is only related to VSWR and the correction effect is excellent.

The application discloses a low-energy-consumption microwave-assisted prefabricated brick rapid curing device, which comprises a heating curing box, a heat exchange recovery mechanism and a low-energy-consumption microwave generator, low-energy-consumption microwave generators are arranged at the two ends of the outer side of the heating curing box, the low-energy-consumption microwave generator adopts a high-efficiency solid-state microwave power amplifier, a heating cavity is arranged in the heating curing box, a heat-conducting corrugated metal sheet is arranged on the top wall of the heating cavity, and heat gathering grooves are arranged on the top of the heating curing box. The low-energy-consumption microwave-assisted prefabricated brick rapid curing device uses the heating cavity of the heating curing box as a prefabricated brick curing space, uses the low-energy-consumption microwave generator as a core component for generating microwave energy, and transmits the microwave energy generated by the low-energy-consumption microwave generator into the heating cavity under the guidance of the inner side waveguide metal pipe, radiates the microwave energy into the heating cavity, and performs microwave curing on the prefabricated bricks on the inner side.

A microwave power amplifier arrangement for an electron paramagnetic resonance (EPR) system provides amplified microwave pulses having a microwave frequency in the X-band. The arrangement has a microwave input and a microwave output, and comprises at least one transistor amplifier device, and at least one switchable reflection device. A respective transistor amplifier device comprises a transistor amplifier device input directly or indirectly connected to the microwave input (2), at least one transistor, and a transistor amplifier device output directly or indirectly connected to the microwave output. A respective switchable reflection device comprises a PIN diode and a lambda / 4 line connected directly or indirectly to the transistor amplifier device output of at least one transistor amplifier device and to a first port of the PIN diode, with lambda being the wavelength of the microwave radiation within the lambda / 4 line. A second port of the PIN diode is connected to ground.

The invention discloses a microwave transmission system for NV color center magnetic detection and a transmission method thereof, the microwave transmission system for NV color center magnetic detection comprises a microwave generator, a microwave power amplifier, a circulator, an impedance matching adjusting device, a microwave antenna and a 50-ohm terminal load, the microwave power amplifier is connected with the microwave generator through a coaxial cable; the circulator is connected with the output end of the microwave power amplifier; the microwave antenna is connected with the output end of the impedance matching network and used for radiating microwave energy to the NV color center in the blind hole of the diamond anvil cell. The 0.1 mm micro electric small loop antenna is matched with the diamond anvil cell blind hole, the L-shaped LC network is adopted to match the antenna impedance from 0.056 + j3.5 ohm to 50 ohm, microwave reflection is remarkably reduced, the ODMR spectrogram contrast ratio and symmetry are improved, and the magnetic field analysis precision reaches the order of magnitude. A protection mechanism formed by the circulator and the 50-ohm load isolates reflected signals, equipment damage is avoided, it is guaranteed that the system stably operates at the frequency band of 2.4-3.3 GHz, and core hardware support is provided for high-voltage magnetic detection.

The application discloses a broadband microwave solid-state power amplifier design method based on a reconfigurable matching network, and belongs to the technical field of microwave power amplifier design. The method acquires transistor model parameters and a target working frequency band, constructs an initial topology of a reconfigurable matching network containing tunable element nodes and switch switching paths, performs discretization sampling on the target frequency band to obtain a plurality of key frequency points, dynamically adjusts element values and switch on-off states for each key frequency point through an iterative search algorithm to generate a corresponding power matching parameter set, compares the power matching parameter sets of adjacent key frequency points in terms of difference degree, identifies parameter jump intervals with a difference degree exceeding a tolerance threshold, positions mismatch element nodes according to the parameter jump intervals, performs a switch path reconstruction operation, and generates a broadband matching parameter sequence. The application can effectively solve the performance deterioration problem of a broadband power amplifier matching network caused by parameter mutation when working across frequency bands.

The utility model discloses a microwave power amplifier circuit board structure convenient to install, and relates to the technical field of microwave power amplifiers, the microwave power amplifier circuit board structure comprises a microwave amplifier lower shell and a circuit board main body, one side of the circuit board main body is provided with an input interface, and the other side of the circuit board main body is provided with a second output interface. A first output interface is installed on one side of the outer surface of the circuit board body, a supporting frame is fixed among the first output interface, the second output interface and the input interface, and a second buffer pad is connected into the supporting frame. Through the arrangement of the input interface, the first output interface, the second output interface and the supporting frame, the circuit board main body does not need to be fastened in the upper shell and the lower shell of the microwave amplifier through bolts during installation, and only the circuit board main body needs to be placed in the lower shell of the microwave amplifier; the input interface, the first output interface and the second output interface penetrate through the lower shell of the microwave amplifier; and moreover, the structural strength is high, and the stability is good.

The application discloses a dual-mode microwave power amplifier circuit for electronic warfare and communication systems and belongs to the technical field of microwave integrated circuits. The dual-mode microwave power amplifier circuit comprises an ultra-wideband front-stage amplification circuit and an ultra-wideband rear-stage amplification circuit. The ultra-wideband front-stage amplification circuit amplifies input signals and adjusts gate voltages. The rear-stage amplification circuit further amplifies output signals of the front stage and outputs the signals. Both the two-stage amplification circuits can switch between ultra-wideband and single communication frequency bands through reconfigurable branches. The switching can be realized by adjusting control voltages. Moreover, the center frequency of the single passband can be changed by changing the values of capacitors and inductors in the reconfigurable branches. The mode switching between the ultra-wideband and the communication frequency band can be realized through on-chip voltage control. The performance is maintained well before and after the switching, and the problem of dual-mode operation of high-performance power amplifiers in the ultra-wideband and the communication frequency band is solved.

The present invention provides a method for testing the electromagnetic pulse radiation interference characteristics of a MEMS microsensor, comprising: selecting an L-band microwave power amplifier-filter circuit based on an RF MEMS filter as a test circuit sample; establishing a space electronic coupling characteristics test system; the space electronic coupling characteristics test system comprising a microwave radiation antenna, a nanosecond pulse drive power supply, a first receiving antenna, a second receiving antenna, an oscilloscope disposed within a shielded room, a radio frequency signal generator, and the test circuit sample; determining test parameters, including the type and parameters of the nanosecond pulse drive power supply, a test frequency band, a test frequency point, antenna distance, and the relative orientation of the test circuit sample to the propagation direction of the electromagnetic wave in space; and performing an electromagnetic interference test based on the space electronic coupling characteristics test system and the test parameters. This invention can provide technical support for ensuring the safe and reliable operation of micro-nano systems in power systems.

The invention discloses a solid-state power amplifier test and synthesis system, a test method and a consistency adjustment method. The system comprises a solid-state power amplifier module, a signal link module, a measurement and control module and a temperature monitoring module, the solid-state power amplifier module comprises a microwave driving module and a microwave power amplifier module; the signal link module comprises a wave-to-same converter and a waveguide directional coupler; wherein the waveguide converter is used for converting a microwave signal from the microwave power amplifier module into a waveguide signal for transmission; the waveguide directional coupler is used for coupling waveguide signals and transmitting coupled signals to the measurement and control module; the measurement and control module is used for sending a test signal to the microwave driving module, collecting a coupling signal of the waveguide directional coupler, and performing data processing and analysis based on the test signal and the coupling signal; the temperature monitoring module is used for monitoring the temperature of a power amplifier component area of the microwave power amplifier module. According to the invention, the safety, efficiency and consistency of testing and synthesis of the high-power solid-state power amplifier can be improved.

The invention discloses an electronic probe micro-discharge detection system and method, and the system comprises a signal source, a modulation unit, a microwave power amplifier, a bi-directional coupler, a vacuum tank and a coupler which are sequentially arranged. The coupler is connected with a high-power matching load and a first spectrum analyzer. For whether the electronic probe micro-discharge detection system can sensitively detect electronic changes, rated electrons can be generated by controlling the wavelength and energy distribution of a UV light source, controlling hardware use through an aperture, irradiating the UV light source to a metal plate through a silica optical fiber and setting the voltage and the aperture of the light source; the current calibration test system is used for testing rated electrons in advance; the method for confirming the optimal detection current position of the electronic probe is provided, different tested pieces adopt different testing positions, and the technical problem that in the prior art, local testing cannot be carried out, and the current change generated when part local micro-discharge is generated cannot be reflected is solved.

The application relates to the field of communication, in particular to a constant-power or constant-gain mode switchable power amplifier control circuit, which comprises an amplification link and an adjusting circuit; the amplification link comprises a preamplification stage, a signal attenuator, a driving amplification stage, a final-stage power amplifier and a signal coupler which are sequentially connected from a signal input end to a signal output end; the adjusting circuit is used for sending a gain adjusting signal to the signal attenuator and maintaining the stability of the amplification link; the application solves the problems that microwave power amplifier equipment needs to be switched in different constant-power or constant-gain working modes, the equipment power amplifier enters a deep saturation working state, the signal quality deteriorates, the reliability of the equipment is reduced and the service life is shortened; the application facilitates the user to switch the working mode in different use scenes, protects the output signal quality of the equipment power amplifier from deterioration, improves the reliability of the equipment and prolongs the service life.

In some aspects, the embodiments described herein relate to a method for tuning a frequency of microwave power delivered to a chamber, including striking a plasma in the chamber. Embodiments may further comprise scanning the frequency from a first frequency to a second frequency, where a set point frequency in a range from the first frequency to the second frequency has a lowest reflected power. In an embodiment, the method further includes setting the frequency of the microwave power delivered to the chamber to the set point frequency. The method may further include changing the set point frequency when a measure of reflected power exceeds a threshold.

The invention provides a rapid and uniform rewarming microwave heating system and heating method for large-scale organs after long-time low-temperature preservation, and relates to the technical field of low-temperature biological preservation, the system is characterized in that microwave energy is input into a resonant cavity through a coupler, and a heated object in the resonant cavity is heated; the spectrum analyzer is used for monitoring the forward microwave power of the coupler and a reflected microwave signal in the resonant cavity, and sending the monitored forward microwave power and reflected microwave signal to the control unit; and the control unit is used for dynamically adjusting the output power and / or the output frequency of the microwave power amplifier based on the preset heating temperature curve and the real-time feedback data until the temperature of the heated object reaches the set temperature. According to the heating system and the heating method provided by the invention, the temperatures inside and outside the organ are uniform in the rewarming process of the organ by using microwave heating, so that the rewarming time of the organ is shortened, and the damage to the organ in the rewarming process is also reduced.

In some aspects, the embodiments described herein relate to a method for tuning a frequency of microwave power delivered to a chamber, including striking a plasma in the chamber. Embodiments may further comprise scanning the frequency from a first frequency to a second frequency, where a set point frequency in a range from the first frequency to the second frequency has a lowest reflected power. In an embodiment, the method further includes setting the frequency of the microwave power delivered to the chamber to the set point frequency. The method may further include changing the set point frequency when a measure of reflected power exceeds a threshold.

The application discloses a high-efficiency microwave power amplifier design method based on limited harmonic control, which aims at improving the efficiency of the microwave power amplifier by reducing the useless energy of the transistor and increasing the output power of the transistor, and solves the problem of low efficiency of the high-power amplifier.The application takes the power amplifier power distribution mechanism under the limited harmonic condition as the starting point, increases a small amount of second harmonic output energy to reduce more transistor dissipation energy, and makes the voltage waveform fundamental wave and second harmonic out of phase to obtain the maximum fundamental wave component.Meanwhile, the application provides a current waveform which can be used with the above-mentioned voltage waveform, so as to ensure that the fundamental wave / harmonic impedance of the output port is always non-negative, and solves the problem of low efficiency of the high-power amplifier when realizing higher output power.

The utility model discloses a target reconnaissance interference device for a low-speed small aircraft, which comprises a plurality of receiving and transmitting antennas for acquiring acquired signals and transmitting interference signals after signal amplification, and high-power switches which are connected with the receiving and transmitting antennas in a one-to-one correspondence manner and are used for switching between receiving and transmitting signals, the microwave receiving and transmitting unit is connected with the high-power switch and used for acquiring and filtering the acquired signals, and the signal processing unit is connected with the microwave receiving and transmitting unit and used for processing the filtered acquired signals to obtain target signals, triggering interference signals and transmitting the interference signals to the microwave receiving and transmitting unit. And the microwave power amplifier is connected with the microwave transceiving unit and the high-power switch and is used for amplifying the interference signal. Through the scheme, the device has the advantages of simple structure, high sensitivity, accuracy, reliability and the like, and has very high practical value and popularization value in the technical field of reconnaissance interference.

This invention discloses a high amplitude and phase consistency adaptive adjustment circuit for arrayed power amplifiers, belonging to the field of microwave wireless communication. The circuit includes at least two power amplifiers, a current detection circuit corresponding to each power amplifier, and a programmable gate voltage regulator circuit. A microcontroller forms a closed-loop adjustment circuit. Based on the drain static current fed back from the current detection circuit, the microcontroller adjusts the gate voltage bias output by the programmable gate voltage regulator circuit, stabilizing the drain static current of each power amplifier to a pre-calibrated target value. This circuit supports fixed-step gate voltage adjustment, and the microcontroller can remember control signals after power-down and perform temperature drift dynamic compensation through a pre-stored temperature mapping table. This effectively improves the amplitude and phase consistency and debugging efficiency of the arrayed power amplifier, is compatible with various RF and microwave power amplifiers, and is suitable for arrayed transmission systems.

The present invention relates to the field of amplifiers, and discloses a heat dissipation control method and control system for a microwave power amplifier, including the following steps: a terminal test server generates a test control container and connects it to a test module, the test module tests the microwave power amplifier, and according to the heat dissipation performance corresponding to the transmission power, matches the compensated heat dissipation power of the heat dissipation performance corresponding to the transmission power in the relationship between the compensated heat dissipation power and the heat dissipation performance. The compensated heat dissipation power of the heat dissipation performance corresponding to the transmission power and the corresponding transmission power constitute a heat dissipation strategy for the power amplifier; heat dissipation is performed on the power amplifier according to the heat dissipation strategy of the power amplifier to complete the heat dissipation control of the power amplifier. By dynamically adjusting the heat dissipation strategy, the present invention ensures that the microwave power amplifier can obtain the best heat dissipation effect under different working states, avoids the problems of insufficient heat dissipation or excessive heat dissipation caused by the traditional fixed heat dissipation strategy, and significantly improves the heat dissipation efficiency.

The utility model discloses an ultra-wideband radar signal reconnaissance and interference system, which comprises a receiving antenna, a transmitting antenna, a radio frequency receiver, a radio frequency transmitter and a signal processor, the signal processor is respectively connected with the radio frequency receiver and the radio frequency transmitter, the receiving end of the radio frequency receiver is connected with the receiving antenna, and the output end of the radio frequency transmitter is connected with the transmitting antenna through the microwave power amplifier. The radio frequency receiver comprises a radio frequency front-end unit, a frequency conversion unit and an intermediate frequency unit which are arranged in sequence, and the radio frequency front-end unit is used for receiving a broadband signal of a target radar, performing filtering, amplification and power conditioning on the broadband signal and sending the broadband signal to the frequency conversion unit; the frequency conversion unit is used for performing secondary superheterodyne frequency conversion on the signal to an intermediate frequency signal; the intermediate frequency unit is used for amplifying and filtering the intermediate frequency signal and then outputting to the signal processor. Due to the characteristic of small link noise coefficient of the radio frequency transceiver, the system has the advantage of ultrahigh sensitivity, can adapt to various signal radar systems, and has better practicability.

The utility model discloses a microwave power amplifier with good heat dissipation performance, relates to the technical field of power amplifiers, and aims to solve the problem that when an existing microwave power amplifier is used, the existing microwave power amplifier cannot be changed after the arrangement position is fixed, dust is accumulated, and the heat dissipation performance of a device body is directly influenced. The movable plate is installed above the microwave power amplifier body, reserved sliding grooves are formed in the two ends of the microwave power amplifier body, the two reserved sliding grooves and the microwave power amplifier body are integrally formed, and the movable plate is installed above the microwave power amplifier body. A plurality of cleaning brush heads are arranged on the lower end face of the movable plate, one end of each cleaning brush head is fixedly connected with the movable plate, a protruding block is arranged on the upper end face of the movable plate, and the protruding block and the movable plate are integrally formed.

The invention discloses a near-net forming and batch preparation method of a high-thermal-conductivity diamond / metal matrix composite device with fins, and relates to a composite device and a preparation method thereof. The invention aims to solve the problems that only a diamond / metal-based composite material with a simple shape can be prepared by the existing air pressure infiltration technology, and the diamond / metal-based composite material with a complex shape cannot be demolded, is low in size precision and heat conductivity, cannot be prepared in batches and the like. Through mold design, a mold made of a special material and a demolding method are adopted for design, near-net forming and batch preparation of the high-heat-conductivity diamond / metal-based composite material device which is in a complex shape, has the heat conductivity of 750-1500 W / mK and is provided with the fins are achieved, and the obtained diamond / metal-based composite material device has high and uniform heat conduction performance; the material has high dimensional accuracy and can be directly applied to heat sinks, cooling fins or shells in high-power microwave power amplifier devices or large-scale integrated circuits.

The application belongs to the field of microwave power amplifier control, and particularly relates to a microwave power amplification modulation system based on coupling detection and intelligent shutdown protection, which comprises a preprocessing module, a joint modulation module, a microwave power amplification module, a coupling detection module and a hierarchical protection execution module. The preprocessing module obtains expected load delivery power through convolution coding and constellation mapping; the joint modulation module fuses an improved PID, scene recognition and dynamic decoupling to output a driving amplitude and a drain voltage instruction; the power amplification module is embedded with an impedance matching optimization algorithm to realize efficient amplification of signals; the coupling detection module separates fundamental wave, harmonic wave and stray interference power through joint decomposition, LSTM-CNN feature extraction and deep reinforcement learning; and the hierarchical protection module matches a hierarchical control template based on a power risk model and a knowledge graph. The system realizes power modulation and intelligent shutdown protection in multiple scenes and improves the operation stability of microwave equipment.