Miniature integrated broadband power amplifier circuit, amplifier device and fault detection method

Abstract

The invention discloses a small-sized integrated broadband power amplifier circuit, an amplifier device and a fault detection method, which are applied to the technical field of microwave power amplifiers and aim to solve the problem that in the prior art, a broadband power amplifier module, a power supply module and a heat dissipation device are generally designed respectively. In the field use process, the system is spliced through a connecting line or a transition plate, the size is large, the cost is high, the power consumption is large, the debugging amount is large, the transfer process is inconvenient, meanwhile, when a fault occurs, a fault part cannot be quickly positioned, and personnel have the risk of radiation when troubleshooting the fault for a long time. According to the invention, through a radio frequency link series circuit, the pushing stage module and the amplification stage module are connected in series and automatically spliced under the extremely small size, so that the optimal connection of the two power amplification circuits is ensured; and power, temperature, voltage and user information are monitored through an internal control center, so that the stability and reliability of the system are improved, and the debugging and maintenance difficulty is reduced.

Description

Technical Field

[0001] The invention belongs to the field of microwave power amplifiers, and in particular relates to a power amplifier and a fault detection device having the amplifier. Background Art

[0002] Power amplifiers are an indispensable part of modern communication technology and electronic equipment. Their main function is to enhance the power of signals to achieve long-distance transmission and ensure reliable signal transmission in various environments.

[0003] Broadband power amplifiers are able to operate effectively over a wide frequency range, usually covering multiple communication bands, which means they can be used in a variety of applications such as wireless communications, broadcasting, satellite communications, reconnaissance, jamming, etc. This adaptability makes broadband amplifiers particularly important in modern communication systems.

[0004] With the development of integrated circuit technology, miniaturization has become an important trend in electronic equipment design. Miniaturized broadband power amplifiers can reduce size and weight while ensuring performance, making them easier to integrate into portable devices. Integration technology is an important driving force for the development of electronic products towards miniaturization, high power efficiency, and stable performance. Power amplifiers can integrate multiple functions on a single chip, reduce external components, and reduce costs and signal loss.

[0005] Designing a small, integrated, broadband power amplifier faces many challenges, including high power output, thermal management, linearity, gain flatness, interference, troubleshooting difficulties, etc. These challenges require designers to have deep expertise in material selection, circuit design, and system integration.

[0006] The existing technology generally designs the broadband power amplifier module, power supply module and heat dissipation device separately, and then splices the system together through connecting wires or transition boards during on-site use. This method is not only large in size, high in cost, high in power consumption, requires a lot of debugging, and has an inconvenient transportation process, but also, if a fault occurs under high-power transmission, it is impossible to quickly locate the fault site. There is a risk of radiation exposure when personnel are troubleshooting for a long time, causing safety problems. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a small integrated broadband power amplifier circuit, an amplifier device and a fault detection method.

[0008] One of the technical solutions adopted by the present invention is: a small integrated broadband power amplifier circuit, comprising: an amplifier circuit and an automatic control circuit, wherein the amplifier circuit adopts a radio frequency link series circuit structure, specifically comprising a driver module and an amplifier module connected in sequence, wherein the driver module is configured to amplify the input signal amplitude to the excitation signal required by the amplifier module, and the amplifier module is configured to amplify the output signal of the driver module to the required power value;

[0009] The self-control circuit includes a power module and a control module; the power module is configured to provide power to the driving stage module, the amplifying stage module and the control module, the control module is connected to the power module and the amplifying stage module, and the control module is configured to provide a modulation signal for controlling the power supply of the amplifying stage module, receive monitoring information and analyze faults.

[0010] The driving stage module comprises an input terminal 1, a first attenuator 2, a temperature-compensated attenuator 3, a first-stage amplifier 4, a second attenuator 5, a second-stage amplifier 6 and a third attenuator 7 which are connected in sequence.

[0011] The amplifier module includes: a three-stage amplifier 8, which is used to amplify the input excitation signal, and the amplified signal is input to the first-stage power distributor 9. The first-stage power distributor 9 outputs two signals with the same power, one of which is input to the first-stage power distributor 10, and the other is input to the second-stage power distributor 11;

[0012] The first two-stage power distributor 10 outputs two signals with the same power, one of which is input to the first three-stage power distributor 12, and the other is input to the second three-stage power distributor 13;

[0013] The second two-stage power distributor 11 outputs two signals with the same power, one of which is input to the third three-stage power distributor 14, and the other is input to the fourth three-stage power distributor 15;

[0014] Two signals with the same power outputted by the first three-stage power distributor 12 are inputted into the first four-stage amplifier 16, and the other one is inputted into the second four-stage amplifier 17;

[0015] The two signals with the same power outputted by the second three-stage power divider 13 are inputted into the third four-stage amplifier 18 on one path and the fourth four-stage amplifier 19 on the other path;

[0016] The two signals with the same power outputted by the third three-stage power distributor 14 are inputted into the fifth four-stage amplifier 20 on one path and the sixth four-stage amplifier 21 on the other path;

[0017] The fourth three-stage power divider 15 outputs two signals with the same power, one of which is input to the seventh four-stage amplifier 22, and the other is input to the eighth four-stage amplifier 23;

[0018] The signal amplified by the first four-stage amplifier 16 and the signal amplified by the second four-stage amplifier 17 are input to the first-stage power synthesizer 24;

[0019] The signal amplified by the third four-stage amplifier 18 and the signal amplified by the fourth four-stage amplifier 19 are input to the second first-stage power synthesizer 25;

[0020] The signal amplified by the fifth four-stage amplifier 20 and the signal amplified by the sixth four-stage amplifier 21 are input to the third first-stage power synthesizer 26;

[0021] The signal amplified by the seventh four-stage amplifier 22 and the signal amplified by the eighth four-stage amplifier 23 are input to the fourth first-stage power synthesizer 27;

[0022] The signal output from the first level power combiner 24 and the signal output from the second level power combiner 25 are input to the first level power combiner 28;

[0023] The signal output from the third first-level power combiner 26 and the signal output from the fourth first-level power combiner 27 are input to the second second-level power combiner 29;

[0024] The signal output from the first two-stage power combiner 28 and the signal output from the second two-stage power combiner 29 are input to the three-stage power combiner 30;

[0025] The signal outputted by the three-stage power combiner 30 passes through the coupler 31 and enters the output terminal 32;

[0026] The signal output from the coupler 31 also serves as the input of the forward detection 33 , and the output of the forward detection 33 serves as the input of the detection circuit 34 .

[0027] The power module comprises a power input (35), and the power input (35) converts the input voltage into at least four equal voltages through an AC to DC module (36);

[0028] The first voltage is sequentially passed through the first step-down circuit (37) and the first voltage stabilizing circuit (38) to supply power to the driving-stage module and the amplifying-stage module; the first voltage is sequentially passed through the first step-down circuit (37), the second voltage stabilizing circuit (39) and the first negative voltage circuit (40) to serve as the third-stage amplifying gate voltage; the first voltage is sequentially passed through the first step-down circuit (37), the third voltage stabilizing circuit (41) and the second negative voltage circuit (42) to serve as the fourth-stage amplifying gate voltage; the first voltage is sequentially passed through the first step-down circuit (37) and the fourth voltage stabilizing circuit (43) to supply power to the control module;

[0029] The second voltage supplies power to the modulation circuit (44); the modulation circuit (44) outputs a corresponding modulation power supply according to the modulation signal output by the control module circuit, and the modulation power supply is used to control the operation of the three-stage amplifier and the four-stage amplifier;

[0030] The power module further comprises a voltage detection circuit (45) and a temperature detection circuit (46); the voltage detection circuit (45) is used to detect the output voltage of the AC to DC module (36); the temperature detection circuit (46) is used to detect the operating temperature of the power module;

[0031] The third voltage is used to supply power to the voltage detection circuit (45);

[0032] The fourth voltage supplies power to the temperature detection circuit (46).

[0033] The control module includes FPGA 48, crystal oscillator 49, communication interface 50, serial port conversion 51, register 52 and program editing interface 53;

[0034] The heat dissipation device includes a first fan 54 , a second fan 55 , a third fan 56 , a fourth fan 57 , a heat dissipation duct 58 , a fifth fan 59 , a sixth fan 60 , a seventh fan 61 and an eighth fan 62 .

[0035] The second technical solution adopted by the present invention is: a device based on the above amplifier, comprising a detection body, a device configured to detect the above small integrated broadband power amplifier, and a heat dissipation device;

[0036] An input terminal and an output terminal are arranged on the periphery of the detection body;

[0037] The heat dissipation device includes two rows of fans, one row of fans is arranged at the input end, and the other row of fans is arranged at the output end; the air inlet direction and the air outlet direction of the two rows of fans are consistent; the internal space of the detection body between the two rows of fans serves as a heat dissipation air duct.

[0038] The heat dissipation device is powered by a power module; the AC to DC module (36) in the power module specifically converts the input voltage into five equal-value voltages; the fifth voltage is supplied to the heat dissipation device after passing through a second step-down circuit (47).

[0039] The third technical solution adopted by the present invention is: a small integrated broadband power amplifier circuit fault detection method, characterized in that, based on the small integrated broadband power amplifier according to any one of claims 1 to 4, the fault detection method specifically includes:

[0040] S0, turn on the power switch;

[0041] S1. Monitor the output voltage of the AC-to-DC module 36 in real time through the voltage detection circuit 45. When the voltage value is normal, execute step S2; otherwise, execute step S6;

[0042] S2, the control module circuit sets the modulation signal and turns on;

[0043] S3, monitor the temperature of the power module in real time through the temperature detection circuit 28, and when the temperature is normal, execute step S4; otherwise, execute step S7;

[0044] S4, input terminal 1 inputs RF signal;

[0045] S5, real-time monitoring of the output power of the amplifier module is performed through the detection circuit 34. When the output power is abnormal, step S8 is executed; otherwise, normal operation continues;

[0046] S6. The voltage detection value is reported to the control module. If it is abnormal, the control module determines that the power supply is faulty and reports it to the user center, and the user turns off the power supply.

[0047] S7, the temperature detection value is reported to the control module. If it is abnormal, the control module determines that the temperature is faulty and reports it to the user center, and the user turns off the power supply;

[0048] S8. The power detection circuit value is reported to the control module. If it is abnormal, the control module determines that there is a transmission failure and reports it to the user center, and the user turns off the power.

[0049] Beneficial effects of the present invention: The small integrated broadband power amplifier of the present invention and the fault detection device with the amplifier include a power amplification component and a functional component for operation connected in series with the power amplification component, and the functional component includes a plurality of self-control circuits connected in series. The present invention uses the power amplification component and the plurality of self-control circuits to amplify the power of the radio frequency signal to more than 100W with a small volume, low cost, and simpler debugging operation method, and checks the working conditions of each component in real time according to data information, so as to quickly locate the fault position. According to the integrated design, the reliability of the overall system is improved, the power efficiency is improved, and the energy consumption of the system is significantly reduced. According to the characteristics of the product design such as small volume, stable performance, simple use, and low cost, the user experience can be significantly improved and it is more competitive in the market. Compared with the prior art, it has the following advantages and beneficial effects:

[0050] 1. The present invention uses a radio frequency link series circuit to automatically connect the driving stage module and the amplifier stage module in series in a very small size, ensuring the optimal connection solution of the two power amplifier circuits. The radio frequency amplification link amplifies the input signal of 0dBm±3dB (@6GHz~18GHz) to 53dBm, and the radio frequency output power exceeds 100W after coupling detection. At the same time, the linearity and quality of the system signal are guaranteed, the overall debugging efficiency is improved, and the power consumption is reduced;

[0051] 2. The present invention monitors power, temperature, voltage and user information through the internal control center, can control the output voltage of each circuit of the power module, realize the functions of power amplifier working mode switching, circuit shutdown protection, fault information reporting, etc., improves the stability and reliability of the system, and reduces the difficulty of debugging and maintenance;

[0052] 3. The present invention reduces the number of RF cable interfaces, internal module power interfaces, and external fault detection information output interfaces by integrating the design of the driving stage circuit, the amplifying stage circuit, the power supply circuit, the control circuit, and the heat dissipation device, reduces the risk of failure due to poor connection, and thus improves the reliability of the overall system; at the same time, it helps to improve power efficiency and significantly reduce system energy consumption; and based on the product design characteristics of small size, stable performance, simple use, low cost, etc., it can significantly improve user experience and be more competitive in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a working schematic diagram of the integrated broadband power amplifier circuit in the present invention;

[0054] Figure 2 It is a schematic diagram of the dimensions and structure of the present invention;

[0055] Figure 3 It is a schematic diagram of the working process of the fault detection device in the present invention.

[0056] Description of the accompanying drawings: 1-input end, 2-first attenuator, 3-temperature compensated attenuator, 4-first-stage amplification, 5-second attenuator, 6-second-stage amplification, 7-third attenuator, 8-third-stage amplification, 9-first-stage power distribution, 10-second-stage power distribution, 11-second-stage power distribution, 12-third-stage power distribution, 13-third-stage power distribution, 14-third-stage power distribution, 15-third-stage power distribution, 16-fourth-stage amplification, 17-fourth-stage amplification, 18-fourth-stage amplification, 19-fourth-stage amplification, 20-fourth-stage amplification, 21-fourth-stage amplification, 22-fourth-stage amplification, 23-fourth-stage amplification, 24-first-stage power synthesis, 25-first-stage power synthesis, 26-first-stage power synthesis, 27-first-stage power synthesis, 28-second-stage power synthesis, 29-second-stage power synthesis, 30-third-stage power synthesis, 31- Coupler, 32-output end, 33-forward detection, 34-detection circuit, 35-power input, 36-AC to DC module, 37-first step-down circuit, 38-first voltage stabilizing circuit, 39-second voltage stabilizing circuit, 40-first negative voltage circuit, 41-third voltage stabilizing circuit, 42-second negative voltage circuit, 43-fourth voltage stabilizing circuit, 44-modulation circuit, 45-voltage detection circuit, 46-temperature detection circuit, 47-second step-down circuit, 48-FPGA, 49-crystal oscillator, 50-communication interface, 51-serial port conversion, 52-register, 53-program editing interface, 54-first fan, 55-second fan, 56-third fan, 57-fourth fan, 58-heat dissipation duct, 59-fifth fan, 60-sixth fan, 61-seventh fan, 62-eighth fan. DETAILED DESCRIPTION

[0057] To facilitate those skilled in the art to understand the technical content of the present invention, the present invention is further explained below with reference to the accompanying drawings.

[0058] The present embodiment provides a small integrated broadband power amplifier and a fault detection device having the amplifier. The broadband power amplifier and the fault detection device having the amplifier are mainly used to solve the problems of the prior art in that the broadband power amplifier is large in size, has a high design cost, is not timely in fault location, and is inconvenient in debugging.

[0059] Example 1

[0060] like Figure 1 As shown, the power amplifying component of the present invention includes an amplifying circuit and an automatic control circuit. The amplifying circuit includes a driving stage module and an amplifying stage module connected in sequence from left to right, wherein the driving stage module is configured to amplify the input signal amplitude to the excitation signal required by the amplifying stage module, and the amplifying stage module is configured to amplify the output signal of the driving stage module to the required power value.

[0061] The driving stage module comprises an input terminal 1, a first attenuator 2, a temperature-compensated attenuator 3, a first-stage amplifier 4, a second attenuator 5, a second-stage amplifier 6 and a third attenuator 7 which are connected in sequence.

[0062] The amplifier stage module includes three-stage amplification 8, one-stage power distribution 9, two-stage power distribution 10-11, three-stage power distribution 12-15, four-stage amplification 16-23, one-stage power synthesis 24-27, two-stage power synthesis 28-29, three-stage power synthesis 30, a coupler 31, an output end 32, a forward detection 33 and a detection circuit 34.

[0063] The working principle of the amplifier circuit is as follows: the external RF signal is received through the input terminal 1, and passes through the first attenuator 2, the temperature-compensated attenuator 3 and the first-stage amplifier circuit 4. At this time, the signal power is controlled at about +12dBm. Then the RF signal enters the second attenuator 5, the second-stage amplifier circuit 6 and the third attenuator 7. At this time, the signal obtains a stable driving-level signal with a power of about +24dBm. This driving-level signal is connected in series to the RF link of the amplifier module, and after three-stage amplification 8, first-stage power distribution 9, second-stage power distribution 10-11, and third-stage power distribution 12-15, the signal is divided into eight paths and the power of each path is amplified to about +27.5dBm. Then, after the RF signal passes through the fourth-stage amplification 16-23, eight-path amplified signals with the same power of about +43dBm will be obtained. Finally, through the first-stage power synthesis 24-27, the second-stage power synthesis 28-29, the third-stage power synthesis 30 and the loss of the coupler 31, the RF amplified signal with a power of about +51dBm (greater than 100W) is finally obtained and transmitted to the required scene through the output terminal 32. At the same time, the coupled signal of the coupler 31 is passed through the forward detection 33 to obtain a weak power detection value, and this power detection value is amplified by the detection circuit 34 and the power monitoring data is transmitted to the control module.

[0064] The automatic control circuit includes a power module, a control module and a heat dissipation device which are connected in sequence from top to bottom, wherein the power module is configured to provide the power required by each component, the control module is configured to provide control signals, receive monitoring information, analyze faults and communicate with the outside, and the heat dissipation device is configured to provide the heat dissipation requirements of each component of the system.

[0065] The power supply module includes a power input 35, an AC to DC module 36, a first step-down circuit 37, a first voltage stabilizing circuit 38, a second voltage stabilizing circuit 39, a first negative voltage circuit 40, a third voltage stabilizing circuit 41, a second negative voltage circuit 42, a fourth voltage stabilizing circuit 43, a modulation circuit 44, a voltage detection circuit 45, a temperature detection circuit 46 and a second step-down circuit 47.

[0066] The control module includes FPGA 48 , crystal oscillator 49 , communication interface 50 , serial port conversion 51 , register 52 and program editing interface 53 .

[0067] The heat dissipation device includes a first fan 54 , a second fan 55 , a third fan 56 , a fourth fan 57 , a heat dissipation duct 58 , a fifth fan 59 , a sixth fan 60 , a seventh fan 61 and an eighth fan 62 .

[0068] The working principle of the power module is as follows: the power module receives 220V AC power through the power input 35, and converts the AC220V voltage into five +28V voltages through the switching power supply AC to DC module 36. The +28V branch 1 is converted into +5.5V voltage through the first step-down circuit 37, and the +5.5V is converted into +5V after passing through the first voltage regulator circuit 38 to supply power to the driving stage module and the amplifier stage module; the +5.5V is converted into -2.8V after passing through the second voltage regulator circuit 39 and the first negative voltage circuit 40 to supply the third-stage amplifier gate voltage to the amplifier stage module; the +5.5V is converted into -1.8V after passing through the third voltage regulator circuit 41 and the second negative voltage circuit 42 to supply the fourth-stage amplifier gate voltage to the amplifier stage module; the +5.5V is converted into +3.3V after passing through the fourth voltage regulator circuit 43 to supply power to the control module. +28V branch 2 directly supplies power to the modulation circuit 44. The modulation circuit controls the output form of the power supply by receiving the modulation signal sent by the control module, and goes to the amplification module for the modulation power supply. When the modulation signal is high level (+2.7V~+5.5V), the modulation circuit outputs +28V, and the amplification module can work normally after receiving the modulation power supply; when the modulation signal is low level (0V~+2.7V), the modulation circuit outputs 0V, and the amplification module stops working. +28V branch 3 directly supplies power to the voltage detection circuit 45, and the voltage detection circuit will send voltage monitoring data to the control module. +28V branch 4 directly supplies power to the temperature detection circuit 46, and the temperature detection circuit will send temperature monitoring data to the control module. +28V branch 5 is converted into +24V by the second step-down circuit 47, and goes to the heat dissipation device to supply the fan power supply.

[0069] Example 2

[0070] like Figure 2 As shown, the fault detection device of the present invention comprises a small detection body, a power amplifier in Embodiment 1 arranged in the small detection body, the body can analyze the monitoring information in real time through the internal self-control circuit, and can cut off the amplifier modulation power supply in time when a fault occurs, and a communication interface for reporting data information to the user center is arranged on the periphery of the body. The monitoring information includes power monitoring, temperature monitoring, and voltage monitoring.

[0071] The fault detection device of the present invention comprises the power amplifier in the first embodiment and a functional component for operation connected in series with the power amplifier, wherein the functional component comprises a plurality of self-control circuits connected in series.

[0072] The control module in this embodiment uses FPGA 48 as the control center, crystal oscillator 49 provides clock signal, transmits operation instructions and exchanges information with the user center through communication interface 50 and serial port conversion 51, register 52 provides storage function of FPGA48 data, and program editing interface 53 provides FPGA debugging program and subsequent upgrade optimization function. The working principle of the control module is: the power monitoring data, voltage monitoring data, and temperature monitoring data received by the control module are all sent to FPGA for processing. When a fault occurs, the fault information will be sent to the user center in time, and the power supply of the power amplifier will be turned off in time to play a protective role.

[0073] The working principle of the heat dissipation device is as follows: the heat dissipation device uses a first fan 54, a second fan 55, a third fan 56, and a fourth fan 57 to form an air inlet to suck external cold air into the heat dissipation duct 58, and a fifth fan 59, a sixth fan 60, a seventh fan 61, and an eighth fan 62 to form an air outlet to blow out the hot air in the heat dissipation duct, thereby realizing the exchange of hot and cold air.

[0074] like Figure 3 The device shown has the following main technical indicators: operating frequency of 6GHz to 18GHz; output power ≥100W; input power 0dBm±3dB; period 0.1ms to 10ms; maximum duty cycle 50%; pulse rising edge: ≤150ns; pulse falling edge: ≤150ns. The preferred dimensions in this embodiment are 400mm long × 380mm wide × 150mm high. The driving-stage module, the amplifying-stage module, the power module, and the control module are installed in parallel on the plane of the heat dissipation device. The driving-stage module and the amplifying-stage module adopt bare chips and micro-assembly assembly processes to achieve minimized design. The two are connected in series in the form of SMP direct plug-in. The power supply interface and the detection circuit output interface are provided with power insulator pins on their sides, which can be directly welded to the circuit boards of the power module and the control module. The circuit boards of the power module and the control module adopt FR-4 multilayer board design to reduce the size. Above the heat dissipation device is the installation plane for fixing and heat conduction of the driving-stage module, the amplifying-stage module, the power module, and the control module. Below the heat dissipation device is the heat dissipation duct, which is provided with multiple heat dissipation fins, and the temperature of the installation platform can be quickly cooled by a fan. For details, please refer to the attached instructions. Figure 3 Setting the above dimensions can improve compatibility and facilitate subsequent optimization and upgrading. Of course, the design can also be changed according to actual conditions. The volume commonly used in the prior art generally ranges from: length 600mm-650mm × width 450mm-500mm × height 200mm-250mm; weight: ≤15kg.

[0075] Example 3

[0076] like Figure 3 As shown, the detection process includes the following steps:

[0077] S0, power switch, manually turned on;

[0078] S1, real-time monitoring of the output voltage +28V of the AC-to-DC module (36) through the voltage detection circuit (45), when the voltage value is between +26V and +30V, it is normal, then executing step S2; otherwise, executing step S7;

[0079] S2, the control center sets the modulation signal and turns it on;

[0080] S3, monitoring the temperature of the power module circuit board in real time through the temperature detection circuit (28), when the temperature is less than +75°C, it is normal, then executing step S4; otherwise, executing step S8;

[0081] S4, power input RF signal working;

[0082] S5, real-time monitoring of the output power of the amplifier module is performed through the detection circuit (34). When the detection voltage is greater than +2.3V, the output power is normal and the amplifier is operating normally. Otherwise, step S6 is executed;

[0083] S6. The voltage detection value is reported to the control module. If it is abnormal, the control module determines that the power supply is faulty and reports it to the user center. The user manually turns off the power supply.

[0084] S7, the temperature detection value is reported to the control module. If it is abnormal, the control module determines that the temperature is faulty and reports it to the user center. The user manually turns off the power supply;

[0085] S8. The power detection circuit value is reported to the control module. If it is abnormal, the control module determines that the transmission failure occurs and reports it to the user center. The user manually turns off the power.

[0086] Through the above detailed description of the contents of the present invention, researchers in this field can realize an integrated broadband power amplifier based on the integration of RF amplification components and several automatic control circuits of functional components with a smaller volume, lower cost, lower power consumption and simpler operation means, which improves the debugging efficiency while ensuring the reliability and stability of the system's RF indicators. At the same time, it should be noted that the present invention has better distinguished the processing method used in the prior art for fault detection of high-power broadband power amplifiers.

[0087] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the scope of protection of the present invention is not limited to such specific statements and embodiments. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A small integrated broadband power amplifier circuit, characterized in that: include: An amplifier circuit and an automatic control circuit, wherein the amplifier circuit specifically comprises a driving stage module and an amplifier stage module connected in series using a radio frequency interface, wherein the driving stage module is configured to amplify the input signal amplitude to the excitation signal required by the amplifier stage module, and the amplifier stage module is configured to amplify the output signal of the driving stage module to the required power value; The self-control circuit includes a power supply module and a control module; The power module is configured to provide power to the driving stage module, the amplifying stage module and the control module. The control module is connected to the power module and the amplifying stage module. The control module is configured to provide a modulation signal for controlling the power supply of the amplifying stage module.

2. A small integrated broadband power amplifier circuit according to claim 1, characterized in that: The driving stage module comprises an input end (1), a first attenuator (2), a temperature-compensated attenuator (3), a first-stage amplifier (4), a second attenuator (5), a second-stage amplifier (6) and a third attenuator (7) which are connected in sequence.

3. A small integrated broadband power amplifier circuit according to claim 1, characterized in that: The amplifier module comprises: a three-stage amplifier (8) for amplifying an input excitation signal, the amplified signal is input into a first-stage power distributor (9), the first-stage power distributor (9) outputs two signals with the same power, one of which is input into a first-stage power distributor (10) and the other is input into a second-stage power distributor (11); Two signals with the same power outputted by the first and second level power distributor (10), one of which is inputted into the first and third level power distributor (12), and the other of which is inputted into the second and third level power distributor (13); The second two-stage power distributor (11) outputs two signals with the same power, one of which is input to the third three-stage power distributor (14) and the other is input to the fourth three-stage power distributor (15); Two signals with the same power outputted by the first three-stage power distributor (12), one of which is inputted into the first four-stage amplifier (16), and the other is inputted into the second four-stage amplifier (17); Two signals with the same power outputted from the second three-stage power distributor (13) are inputted into the third four-stage amplifier (18) on one path and into the fourth four-stage amplifier (19) on the other path; Two signals with the same power outputted by the third three-stage power distributor (14), one of which is inputted into the fifth four-stage amplifier (20), and the other is inputted into the sixth four-stage amplifier (21); Two signals with the same power outputted by the fourth three-stage power distributor (15), one of which is inputted into the seventh four-stage amplifier (22), and the other is inputted into the eighth four-stage amplifier (23); The signal amplified by the first four-stage amplifier (16) and the signal amplified by the second four-stage amplifier (17) are input into the first-stage power synthesizer (24); The signal amplified by the third four-stage amplifier (18) and the signal amplified by the fourth four-stage amplifier (19) are input into the second first-stage power synthesizer (25); The signal amplified by the fifth four-stage amplifier (20) and the signal amplified by the sixth four-stage amplifier (21) are input into the third first-stage power synthesizer (26); The signal amplified by the seventh four-stage amplifier (22) and the signal amplified by the eighth four-stage amplifier (23) are input into a fourth first-stage power synthesizer (27); The signal output by the first level power combiner (24) and the signal output by the second level power combiner (25) are input to the first level power combiner (28); The signal output by the third first-level power synthesizer (26) and the signal output by the fourth first-level power synthesizer (27) are input to the second second-level power synthesizer (29); The signal output by the first two-stage power combiner (28) and the signal output by the second two-stage power combiner (29) are input to a three-stage power combiner (30); The signal output by the three-stage power combiner (30) enters the output terminal (32) through the coupler (31); The signal output by the coupler (31) is also used as the input of the forward detection (33), and the output of the forward detection (33) is used as the input of the detection circuit (34).

4. A small integrated broadband power amplifier circuit according to claim 3, characterized in that: The power module comprises a power input (35), and the power input (35) converts the input voltage into at least four equal voltages through an AC to DC module (36); The first voltage is sequentially passed through the first step-down circuit (37) and the first voltage stabilizing circuit (38) to supply power to the driving-stage module and the amplifying-stage module; the first voltage is sequentially passed through the first step-down circuit (37), the second voltage stabilizing circuit (39) and the first negative voltage circuit (40) to serve as the third-stage amplifying gate voltage; the first voltage is sequentially passed through the first step-down circuit (37), the third voltage stabilizing circuit (41) and the second negative voltage circuit (42) to serve as the fourth-stage amplifying gate voltage; the first voltage is sequentially passed through the first step-down circuit (37) and the fourth voltage stabilizing circuit (43) to supply power to the control module; The second voltage supplies power to the modulation circuit (44); the modulation circuit (44) outputs a corresponding modulation power supply according to the modulation signal output by the control module circuit, and the modulation power supply is used to control the operation of the three-stage amplifier and the four-stage amplifier; The power module further comprises a voltage detection circuit (45) and a temperature detection circuit (46); the voltage detection circuit (45) is used to detect the output voltage of the AC to DC module (36); the temperature detection circuit (46) is used to detect the operating temperature of the power module; The third voltage is used to supply power to the voltage detection circuit (45); The fourth voltage supplies power to the temperature detection circuit (46).

5. A small integrated broadband power amplifier circuit according to claim 4, characterized in that: The control module is also configured to receive monitoring information output by the detection circuit (34), the voltage detection circuit (45) and the temperature detection circuit (46) and analyze faults.

6. A small integrated broadband power amplifier device, characterized in that: It comprises a detection body, a small integrated broadband power amplifier as described in any one of claims 1 to 5 arranged in the detection body, and a heat dissipation device; An input terminal and an output terminal are arranged on the periphery of the detection body; The heat dissipation device includes two rows of fans, one row of fans is arranged at the input end, and the other row of fans is arranged at the output end; the air inlet direction and the air outlet direction of the two rows of fans are consistent; the internal space of the detection body between the two rows of fans serves as a heat dissipation air duct.

7. A small integrated broadband power amplifier device according to claim 6, characterized in that: The heat dissipation device is powered by a power module; the AC to DC module (36) in the power module specifically converts the input voltage into five equal-value voltages; the fifth voltage is supplied to the heat dissipation device after passing through a second step-down circuit (47).

8. The small integrated broadband power amplifier circuit according to claim 6, characterized in that: The radio frequency interface connected in series between the driving stage module and the amplifying stage module in the small integrated broadband power amplifier arranged in the detection body adopts the SMP direct plug-in form.

9. The small integrated broadband power amplifier device according to claim 6, characterized in that: The detection body is also provided with a communication interface on its periphery for reporting monitoring information to an external user center, wherein the monitoring information includes power monitoring, temperature monitoring and voltage monitoring.

10. A small integrated broadband power amplifier circuit fault detection method, characterized in that: Based on the small integrated broadband power amplifier according to any one of claims 1 to 5, the fault detection method specifically comprises: S0, turn on the power switch; S1, monitor the output voltage of the AC to DC module (36) in real time through the voltage detection circuit (45), and when the voltage value is normal, execute step S2; otherwise, execute step S6; S2, the control module circuit sets the modulation signal and turns on; S3, monitoring the temperature of the power module in real time through the temperature detection circuit (28), and when the temperature is normal, executing step S4; otherwise, executing step S7; S4, input terminal (1) inputs RF signal; S5, real-time monitoring of the output power of the amplifier module is performed through the detection circuit (34), and when the output power is abnormal, step S8 is executed; otherwise, normal operation is continued; S6. The voltage detection value is reported to the control module. If it is abnormal, the control module determines that the power supply is faulty and reports it to the user center, and the user turns off the power supply. S7, the temperature detection value is reported to the control module. If it is abnormal, the control module determines that the temperature is faulty and reports it to the user center, and the user turns off the power supply; S8. The power detection circuit value is reported to the control module. If it is abnormal, the control module determines that there is a transmission failure and reports it to the user center, and the user turns off the power.

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