Integrated plug-in type radar power amplifier switch state monitoring circuit

Abstract

The invention provides an integrated plug-in type radar power amplifier switch state monitoring circuit. The circuit comprises a plug-in type monitoring interface, a Hall current mutual inductance module, a conversion module, an operational amplifier module and a first indication module. The integrated plug-in type radar power amplifier on-off state monitoring circuit is connected with a radar through a plug-in type monitoring interface, and a Hall current mutual inductance module generates induced potential according to the change condition of current on a main incoming line of a power management system and outputs a current signal based on the induced potential; the conversion module generates a first voltage signal according to the output current of the Hall current mutual inductance module and transmits the first voltage signal to the operational amplifier module; the operational amplifier module amplifies the first voltage signal to obtain a second voltage signal and transmits the second voltage signal to the first indication module; the first indication module generates a first indication signal according to the second voltage signal to indicate the on-off state of the radar power amplifier to be monitored. Automatic monitoring of the switch state of the radar power amplifier and visual display of the monitoring result can be realized, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of power electronics, and in particular to an integrated plug-in radar power amplifier switch state monitoring circuit. Background Art

[0002] Radar is widely used as an information acquisition equipment that can actively detect long-distance targets all-weather. In the 1960s, phased array radar technology was greatly developed to meet the requirements of observing artificial satellites and ballistic missiles. With the advancement of technology, phased array radar technology has been gradually promoted and applied in many scenarios. In the current situation of gradually increasing product demand in this application environment, low cost and limited versatility are important conditions for promoting phased array radar. To achieve this, advanced technology must be adopted and standardized and modular design principles must be implemented. Therefore, generalizing and facilitating the design of some functional modules can reduce the development cycle and cost of similar products to a certain extent, thereby achieving the widespread promotion of phased array radar.

[0003] Phased array radar hardware circuits are generally composed of signal processing modules, RF link transceiver modules, antenna modules, heat dissipation shielding structures, etc. Whether the power amplifier hardware in the RF link transceiver module is turned on or not is the focus of hardware status monitoring in the field commissioning to determine whether the device is switched from standby mode to detection mode, which is generally judged indirectly through the instantaneous power value of the outdoor power box.

[0004] However, when indirectly judging the power-on status of the power amplifier through the instantaneous power value of the power box in an outdoor test environment, the outdoor test personnel may not be able to intuitively and conveniently observe whether the power amplifier is turned on or not due to reasons such as light intensity and the physical distance between the test personnel and the power supply. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides an integrated plug-in radar power amplifier switch state monitoring circuit, which specifically includes:

[0006] In a first aspect, the present invention provides an integrated plug-in radar power amplifier switch state monitoring circuit, comprising:

[0007] Plug-in monitoring interface, Hall current mutual induction module, conversion module, operational amplifier module and first indication module;

[0008] The input end of the Hall current mutual induction module is connected to the main incoming line of the power management system of the radar to be monitored through a plug-in monitoring interface, and the output end of the Hall current mutual induction module is connected to the input end of the conversion module;

[0009] The input end of the operational amplifier module is connected to the output end of the conversion module, the input end of the operational amplifier module is also used to receive the reference voltage, and the output end of the operational amplifier module is connected to the first indication module;

[0010] The Hall current mutual induction module is used to generate the Hall induced potential according to the current change on the main incoming line of the power management system, and output the current signal based on the Hall induced potential;

[0011] A conversion module, used for generating a first voltage signal according to the output current of the Hall current mutual inductance module, and transmitting the first voltage signal to the operational amplifier module;

[0012] an operational amplifier module, configured to amplify the first voltage signal to obtain a second voltage signal, and transmit the second voltage signal to the first indication module;

[0013] The first indication module is used to generate a first indication signal according to the second voltage signal to indicate the switch state of the radar power amplifier to be monitored.

[0014] In a second aspect, the present invention further provides a radar power amplifier switch state monitoring chip, comprising the integrated plug-in radar power amplifier switch state monitoring circuit provided in the first aspect.

[0015] In a third aspect, the present invention further provides an electronic device, comprising the radar power amplifier switch status monitoring chip provided in the second aspect.

[0016] Beneficial effects of the present invention:

[0017] The integrated plug-in radar power amplifier switch state monitoring circuit provided by the present invention comprises a plug-in monitoring interface, a Hall current mutual induction module, a conversion module, an operational amplifier module and a first indication module; the input end of the Hall current mutual induction module is connected to the main incoming line of the power management system of the radar to be monitored through the plug-in monitoring interface, and the output end of the Hall current mutual induction module is connected to the input end of the conversion module; the input end of the operational amplifier module is connected to the output end of the conversion module, and the input end of the operational amplifier module is also used to receive a reference voltage, and the output end of the operational amplifier module is connected to the first indication module; the Hall current mutual induction module is used to generate a Hall induced potential according to the current change on the main incoming line of the power management system, and output a current signal based on the Hall induced potential; the conversion module is used to generate a first voltage signal according to the output current of the Hall current mutual induction module, and transmit the first voltage signal to the operational amplifier module; the operational amplifier module is used to amplify the first voltage signal to obtain a second voltage signal, and transmit the second voltage signal to the first indication module; the first indication module is used to generate a first indication signal according to the second voltage signal to indicate the switch state of the radar power amplifier to be monitored. Therefore, by monitoring the changes in the current on the main incoming line of the power management system, automatic monitoring of the radar working status is achieved, and the purpose of quickly, accurately and conveniently judging the switch status of the power amplifier module and intuitively displaying the monitoring results during outdoor field testing is achieved. Because it is an integrated functional circuit module, it can be directly applied to the finished radar in a modular plug-in mode without changing the internal signal processing circuit board of the existing radar, so it greatly reduces the manpower and financial costs and reduces the difficulty of monitoring.

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the architecture of an integrated plug-in radar power amplifier switch state monitoring circuit provided by the present invention;

[0020] Figure 2 A schematic diagram of the architecture of another integrated plug-in radar power amplifier switch state monitoring circuit provided by the present invention;

[0021] Figure 3 The present invention provides a schematic structural diagram of an integrated plug-in radar power amplifier switch state monitoring circuit. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

[0023] When the working state of the radar changes, for example, from the standby state to the detection state, or from the detection state to the standby state, it usually corresponds to the change of the switch state of the power amplifier (PA) inside it. The change of the switch state of the internal PA will cause the change of the current on the main incoming line of the radar's power management system. It can be seen that by monitoring the current on the main incoming line of the radar's power management system, the switch state of the power amplifier inside the radar can be indirectly monitored, and then the working state of the radar can be monitored. Based on this, the present invention provides an integrated plug-in radar power amplifier switch state monitoring circuit. Without changing the whole machine, on the basis of the original circuit schematic diagram, the integrated plug-in radar power amplifier switch state monitoring circuit provided by the present invention is added, so as to judge the transient change of the switch state of the power amplifier inside the radar based on the current change on the main incoming line of the radar's power management system, so as to achieve the purpose of quickly, accurately and conveniently judging the switch state of the power amplifier module during outdoor field testing, and can achieve the purpose of long-distance intuitive visualization of the switching gap from standby to working.

[0024] Figure 1 The schematic diagram of the architecture of an integrated plug-in radar power amplifier switch state monitoring circuit provided by the present invention is as follows: Figure 1 As shown, the circuit includes:

[0025] A plug-in monitoring interface 10 , a Hall current mutual inductance module 11 , a conversion module 12 , an operational amplifier module 13 and a first indication module 14 .

[0026] The input end of the Hall current mutual inductance module 11 is connected to the main incoming line of the power management system of the radar to be monitored through the plug-in monitoring interface 10 , and the output end of the Hall current mutual inductance module 11 is connected to the input end of the conversion module 12 .

[0027] The input end of the operational amplifier module 13 is connected to the output end of the conversion module 12 . The input end of the operational amplifier module 13 is also used to receive a reference voltage. The output end of the operational amplifier module 13 is used to connect to the first indication module 14 .

[0028] The Hall current mutual induction module 11 is used to generate a Hall potential according to the change of the current on the main incoming line of the power management system, and output a current signal based on the Hall induced potential.

[0029] Specifically, the Hall current mutual inductance module 11 generates a milliampere current proportional to the load current of the radar to be monitored according to the change of the current on the main incoming line of the power management system, and then is detected in voltage mode through the subsequent circuit.

[0030] The conversion module 12 is used to generate a first voltage signal according to the output current of the Hall current mutual inductance module 11 , and transmit the first voltage signal to the operational amplifier module 13 .

[0031] The operational amplifier module 13 is used to amplify the first voltage signal to obtain a second voltage signal, and transmit the second voltage signal to the first indication module 14 .

[0032] The first indication module 14 is used to generate a first indication signal according to the second voltage signal to indicate the switch state of the radar power amplifier to be monitored.

[0033] Specifically, the radar power amplifier switch state is the switch state of the power amplifier inside the radar.

[0034] Specifically, the Hall current mutual inductance module 11 includes a Hall current sensor. The Hall current sensor is a module that can convert transient current into a corresponding proportional milliampere current according to a fixed value ratio. It uses the Hall effect, that is, the relationship between the force exerted on electrons in a magnetic field and the direction of the current and the direction of the magnetic field to realize the induction detection of the current. Correspondingly, based on the principle of the Hall current sensor, it can be known that the input end of the Hall current mutual inductance module 11 is connected to the main incoming line of the power management system of the radar to be monitored, that is, the main incoming line of the power management system of the radar to be monitored passes through the electromagnetic induction area of ​​the Hall current sensor.

[0035] In a possible implementation, the first indication module 14 is a buzzer.

[0036] Optionally, the buzzer is a piezoelectric buzzer.

[0037] Specifically, when the switch state of the power amplifier of the radar to be monitored changes, the current on the main incoming line of the power management system changes. When the current on the main incoming line of the power management system changes instantaneously, the current flowing through the electromagnetic induction area in the Hall current mutual inductance module 11 changes, so that the transient current is converted according to a fixed value ratio to generate a corresponding proportional milliampere current, and the conversion module 12 added at the later stage detects it in a voltage mode, and the magnitude of this voltage can reflect the change of the current on the main incoming line of the power management system. Further, through the operational amplifier module 14, the output voltage of the conversion module 12 is amplified and output stably. When the amplified voltage reaches the working voltage of the buzzer, the buzzer will be turned on. In order to be able to reflect the switch state of the radar power amplifier in time, the buzzer can be selected according to the actual situation so that it can trigger the buzzer and make a sound when the radar power amplifier is turned on, and the buzzer will not be triggered when the radar power amplifier is not turned on.

[0038] In another possible implementation, the first indication module 14 includes a signal processing module and an indication unit.

[0039] The input end of the signal processing module is connected to the output end of the operational amplifier module 13, and the output end of the signal processing module is connected to the input end of the indication unit.

[0040] The signal processing module is used to control the indicating unit to output a first indication signal according to the output voltage of the operational amplifier module 13 to indicate the switch state of the radar power amplifier to be monitored.

[0041] Optionally, the indicating unit is an indicator light.

[0042] Optionally, the processing module includes a digital signal processing (DSP) unit.

[0043] Specifically, the DSP collects the voltage of the resistor after the output end of the Hall current mutual induction module 11 through the on-chip analog to digital converter (ADC), converts the different voltages into pulse width modulation (PWM) signals, and then outputs the target electrical signal through PWM to control the brightness of the indicator light of the indicating unit. For example, the low brightness of the indicator light corresponds to a smaller induced current generated by the Hall current mutual induction module 11, and the high brightness of the indicator light corresponds to a larger induced current generated by the Hall current mutual induction module 11, and then the brightness of this indicator light reflects the switch state of the power amplifier inside the radar.

[0044] Optionally, the conversion module 12 includes: a variable resistor.

[0045] The conversion module 12 is specifically configured to adjust the voltage value of the first voltage signal by adjusting the resistance value of the variable resistor.

[0046] The circuit can adjust the amplitude of the electrical signal output by the conversion module to the subsequent circuit module by adjusting the resistance value of the variable resistor in the conversion module, thereby avoiding damage to the subsequent circuit due to excessive electrical signals and improving the circuit safety and reliability.

[0047] The integrated plug-in radar power amplifier switch state monitoring circuit provided by the present invention comprises a plug-in monitoring interface, a Hall current mutual induction module, a conversion module, an operational amplifier module and a first indication module. The input end of the Hall current mutual induction module is connected to the main incoming line of the power management system of the radar to be monitored through the plug-in monitoring interface, and the output end of the Hall current mutual induction module is connected to the input end of the conversion module; the second input end of the operational amplifier module is used to receive a reference voltage, and the output end of the operational amplifier module is used to connect to the first indication module. The Hall current mutual induction module is used to generate a Hall potential according to the change of the current on the main incoming line of the power management system to form a milliampere current proportional to the whole machine load current of the radar to be monitored, and then detect it in voltage mode through the subsequent resistor; the input end of the operational amplifier module is connected to the output end of the conversion module, the input end of the operational amplifier module is also used to receive the reference voltage, and the output end of the operational amplifier module is connected to the first indication module; the Hall current mutual induction module is used to generate a Hall induced potential according to the change of the current on the main incoming line of the power management system, and output a current signal based on the Hall induced potential; the conversion module is used to generate a first voltage signal according to the output current of the Hall current mutual induction module, and transmit the first voltage signal to the operational amplifier module; the operational amplifier module is used to perform The first indication module is used to generate a first indication signal according to the second voltage signal to indicate the switch state of the radar power amplifier to be monitored, thereby monitoring the switch state of the power amplifier inside the radar and the working state of the radar by monitoring the change of the current on the main incoming line of the power management system, so as to achieve the purpose of quickly, accurately and conveniently judging the switch state of the power amplifier module and intuitively displaying the monitoring results during outdoor field testing. At the same time, as an integrated functional module, this functional device can be directly superimposed on the whole machine in a modular plug-in manner without changing the finished radar whole machine equipment, thereby reducing manpower and financial costs and reducing the difficulty of outdoor monitoring.

[0048] Optional, see Figure 2 The output end of the Hall current mutual induction module 11 is also connected to the second indication module 15 .

[0049] The second indication module 15 is used to output a second indication signal according to the output current of the Hall current mutual inductance module 11 to indicate the switch state of the radar power amplifier to be monitored.

[0050] Optionally, the second indication module 15 is an indicator light.

[0051] Exemplarily, the indicator light is an LED indicator light.

[0052] Specifically, the integrated module of the present invention can provide a selectively configured DSP internal ADC to collect the voltage signal output by the operational amplifier, so as to accurately adjust the brightness of the LED indicator of the second indication module by adjusting the PWM pulse width.

[0053] Through this circuit, the change of the current on the main incoming line can be directly reflected, and multiple detections can be realized. Through the indication method of the combination of buzzer and indicator light, "sound and light double insurance" can be realized to improve the monitoring precision and accuracy. At the same time, because the detection results are more intuitive, the user experience can be greatly improved. At the same time, this circuit can directly reuse the original board-level circuit of the radar, and superimpose this functional module on the original circuit board without changing the original stereotyped circuit board, which can effectively reduce the design difficulty and cost, and has high feasibility.

[0054] It should be noted that the second indication module 15 may also be a buzzer. The first indication module 14 may also be an indicator light. The indication unit may also be a buzzer. The specific implementation method is not limited.

[0055] Further, such as Figure 3 As shown, the present invention also provides a specific implementation method of an integrated plug-in radar power amplifier switch state monitoring circuit. Figure 3 The circuit shown includes:

[0056] Hall current sensor U1, operational amplifier U2, buzzer F1 and interface J1; resistors R1, R2, R3, R4 and R11, wherein resistor R2 is a variable resistor.

[0057] The main incoming line of the power management system is connected to the input end of the Hall current sensor U1 via the interface J1, and the output end of the Hall current sensor U1 is connected to the front stage of the conversion module formed by the resistor R1 and the resistor R2 connected in parallel.

[0058] Specifically, the main incoming line of the power management system is connected to the integrated plug-in radar power amplifier switch status monitoring circuit through the interface J1. The current on the main incoming line of the power management system is input into the integrated plug-in radar power amplifier switch status monitoring circuit through the interface J1, and then passes through the induction coil of the Hall current sensor U1. When the current on the main incoming line of the power management system changes, the current flowing through the induction coil of the Hall current sensor U1 also changes synchronously, thereby generating a Hall induced potential.

[0059] The rear stage of the conversion module formed by the resistor R1 and the resistor R2 connected in parallel, and the front stage of the resistor R4 are both connected to the positive input terminal IN+ of the operational amplifier U2.

[0060] The subsequent stage of the resistor R4 is used to receive a reference voltage.

[0061] The rear stage of the resistor R3 is connected to the output terminal of the operational amplifier U2, and the front stage of the resistor R3 is connected to the inverting input terminal IN- of the operational amplifier U2.

[0062] The front stage of the resistor R11 is connected to the inverting input terminal IN- of the operational amplifier U2, and the rear stage is connected to the ground signal GND.

[0063] The output end of the operational amplifier U2 is also connected to the input end of the buzzer F1.

[0064] Optionally, the interface J1 may be a socket or a plug, and the specific form is not limited.

[0065] Optional, such as Figure 3 As shown, an LDO power supply is also included.

[0066] The LDO power supply includes an LDO linear voltage-regulated output power supply chip U3 and an operational amplifier U4.

[0067] Resistors R5, R6, R7, R8, R9 and R10, wherein resistor R6 is a variable resistor.

[0068] Capacitors C1, C2, C3 and C4.

[0069] The input end of the LDO linear voltage-stabilized output power supply chip U3 is used to receive a first external input voltage and is connected to the front stage of the capacitor C1 and the front stage of the capacitor C2 respectively.

[0070] The rear stages of the capacitor C1 , the capacitor C2 , the capacitor C3 , the capacitor C4 , and the resistor R8 are connected to a common ground and are all connected to the ground signal GND.

[0071] The output end of the LDO linear voltage-stabilized output power supply chip U3 is respectively connected to the front stage of the capacitor C3, the front stage of the capacitor C4, and the front stage of the resistor R5.

[0072] The front stage of the resistor R6 is connected to the rear stage of the resistor R5 , and the rear stage of the resistor R6 is connected to the front stage of the resistor R7 and the front stage of the resistor R8 , respectively.

[0073] The positive input terminal of the operational amplifier U4 is connected to the rear stage of the resistor R7, the negative input terminal of the operational amplifier U4 is connected to the output terminal of the operational amplifier U4 through the resistor R9, and the negative input terminal of the operational amplifier U4 is also connected to the ground signal GND through R10.

[0074] The output terminal of the operational amplifier U4 is also connected to the front stage of the resistor R4 to transmit the reference voltage generated by the LDO power supply to the operational amplifier U2.

[0075] Among them, the model of the Hall current sensor U1 can be selected according to actual conditions, and specifically, an input and output proportional sensor model that matches the maximum load current consumption of the entire machine can be selected.

[0076] exist Figure 3In the circuit shown, the main incoming line of the power management system is embedded in the middle of the primary secondary coil in the Hall current sensor U1, and the magnetic induction Hall potential is used to form a milliampere current proportional to the whole machine load current of the radar to be monitored, and then detected in voltage mode through the subsequent resistor, and the change of the current of the current-carrying conductor is indirectly monitored by monitoring the magnitude of this voltage. In order to achieve a better monitoring effect, an input and output proportional sensor model that matches the maximum load current consumption of the whole machine can be selected. By adding resistor R1 and adjustable resistor R2 to the output end of the Hall current sensor U1, the output can be converted to the target voltage range required for the subsequent processing. The preset reference voltage Vref plays a role in reference adjustment. Vref is output by the linear LDO voltage regulator output module U3 after filtering by C3 and C4, and then transmitted to the operational amplifier U2 after being followed by the subsequent operational amplifier. Vdc is the power supply voltage input of this operational amplifier module.

[0077] For example, in Figure 3 J1 is an electrical connector, which connects and disconnects the integrated plug-in radar power amplifier switch status monitoring circuit and the power management system through plugging and unplugging.

[0078] Optional, to ensure the safety of the circuit, such as Figure 3 As shown, a resistor R12 may also be included to achieve a common ground.

[0079] The present invention also provides a radar power amplifier switch state monitoring chip, including the integrated plug-in radar power amplifier switch state monitoring circuit provided by any of the above embodiments.

[0080] The present invention also provides an electronic device, comprising the radar power amplifier switch state monitoring chip provided in the above embodiment.

[0081] As for the chip / electronic device embodiment, since it is basically similar to the circuit embodiment, the description is relatively simple, and the specific contents and beneficial effects and other related matters can be referred to the partial description of the method embodiment.

[0082] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0083] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. An integrated plug-in radar power amplifier switch state monitoring circuit, characterized in that: include: Plug-in monitoring interface, Hall current mutual induction module, conversion module, operational amplifier module and first indication module; The input end of the Hall current mutual induction module is connected to the main incoming line of the power management system of the radar to be monitored through the plug-in monitoring interface, and the output end of the Hall current mutual induction module is connected to the input end of the conversion module; The input end of the operational amplifier module is connected to the output end of the conversion module, the input end of the operational amplifier module is also used to receive a reference voltage, and the output end of the operational amplifier module is connected to the first indication module; The Hall current mutual induction module is used to generate a Hall induced potential according to the current change on the main incoming line of the power management system, and output a current signal based on the Hall induced potential; The conversion module is used to generate a first voltage signal according to the output current of the Hall current mutual induction module, and transmit the first voltage signal to the operational amplifier module; The operational amplifier module is used to amplify the first voltage signal to obtain a second voltage signal, and transmit the second voltage signal to the first indication module; The first indication module is used to generate a first indication signal according to the second voltage signal to indicate the switch state of the radar power amplifier to be monitored.

2. The circuit according to claim 1, characterized in that The output end of the Hall current mutual induction module is also connected to the second indication module; The second indication module is used to output a second indication signal according to the output current of the Hall current mutual inductance module to indicate the switch state of the radar power amplifier to be monitored.

3. The circuit according to claim 1 or 2, characterized in that: The conversion module comprises: Variable resistor; The conversion module is specifically used to adjust the voltage value of the first voltage signal by adjusting the resistance value of the variable resistor.

4. The circuit according to claim 1 or 2, characterized in that: The first indication module is a buzzer.

5. The circuit according to claim 2, characterized in that The second indication module is an indicator light.

6. The circuit according to claim 1, characterized in that The first indication module comprises a signal processing module and an indication unit; The input end of the signal processing module is connected to the output end of the operational amplifier module, and the output end of the signal processing module is connected to the input end of the indication unit; The signal processing module is used to control the indication unit to output a first indication signal according to the output voltage of the operational amplifier module to indicate the switch state of the radar power amplifier to be monitored.

7. The circuit according to claim 1, characterized in that The circuit comprises: Hall current sensor U1, operational amplifier U2, buzzer F1 and interface J1; Resistors R1, R2, R3, R4 and R11, wherein resistor R2 is a variable resistor; The main incoming line of the power management system is connected to the input end of the Hall current sensor U1 via the interface J1, and the output end of the Hall current sensor U1 is connected to the front stage of the conversion module formed by the resistor R1 and the resistor R2 in parallel; The rear stage of the conversion module formed by the resistor R1 and the resistor R2 connected in parallel, and the front stage of the resistor R4 are both connected to the positive input terminal IN+ of the operational amplifier U2; The rear stage of the resistor R4 is used to receive the reference voltage; The rear stage of the resistor R3 is connected to the output end of the operational amplifier U2, and the front stage of the resistor R3 is connected to the inverting input end IN- of the operational amplifier U2; The front stage of the resistor R11 is connected to the inverting input terminal IN- of the operational amplifier U2, and the rear stage is connected to the ground signal GND; The output end of the operational amplifier U2 is also connected to the input end of the buzzer F1.

8. The circuit according to claim 7, characterized in that Also includes LDO power supply; The LDO power supply includes an LDO linear voltage-regulated output power chip U3 and an operational amplifier U4; Resistors R5, R6, R7, R8, R9 and R10, wherein resistor R6 is a variable resistor; Capacitors C1, C2, C3 and C4; The input end of the LDO linear voltage regulated output power supply chip U3 is used to receive a first external input voltage and is connected to the front stage of the capacitor C1 and the front stage of the capacitor C2 respectively; The rear stage of the capacitor C1, the rear stage of the capacitor C2, the rear stage of the capacitor C3, the rear stage of the capacitor C4, and the rear stage of the resistor R8 are all connected to the ground signal GND; The output end of the LDO linear voltage regulated output power supply chip U3 is respectively connected to the front stage of the capacitor C3, the front stage of the capacitor C4 and the front stage of the resistor R5; The front stage of the resistor R6 is connected to the rear stage of the resistor R5, and the rear stage of the resistor R6 is connected to the front stage of the resistor R7 and the front stage of the resistor R8 respectively; The positive input terminal of the operational amplifier U4 is connected to the rear stage of the resistor R7, the negative input terminal of the operational amplifier U4 is connected to the output terminal of the operational amplifier U4 through the resistor R9, and the negative input terminal of the operational amplifier U4 is also connected to the ground signal GND through R10; The output end of the operational amplifier U4 is also connected to the front stage of the resistor R4 to transmit the reference voltage generated by the LDO power supply to the operational amplifier U2.

9. A radar power amplifier switch state monitoring chip, characterized in that: It comprises the integrated plug-in radar power amplifier switch state monitoring circuit as described in any one of claims 1-8.

10. An electronic device, characterized in that: It comprises the radar power amplifier switch status monitoring chip as claimed in claim 9.

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