Air-cooled solid-state power source device and system

Abstract

The utility model discloses an air-cooled solid-state power source device and system, and relates to the technical field of solid-state power sources. An input protection module; a pre-stage power amplifier module; a final-stage power amplifier module; and a main control module. According to the utility model, the input protection module, the pre-stage power amplifier module and the final-stage power amplifier module are connected in series to form a radio frequency link, and the input protection module is used for carrying out amplitude limiting protection and filtering on an input radio frequency signal transmitted by an input end and then inputting a first radio frequency signal; performing temperature compensation attenuation and bandwidth internal gain equalization on the first radio frequency signal by using a pre-stage power amplifier module, and outputting a second radio frequency signal after amplification; and then the last-stage power amplifier module is used for carrying out the last-stage amplification on the second radio frequency signal, and the radio frequency signal after the last-stage amplification is detected by the main control module and then is coupled and output, so that the solid-state power source outputs a stable and reliable output radio frequency signal, and the stable and reliable radio frequency requirement of the particle accelerator is met.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-state power sources, in particular to an air-cooled solid-state power source device and system. Background Art

[0002] Solid-state power sources are a crucial component of particle accelerators, primarily providing radio frequency (RF) power. Therefore, while meeting test requirements and specifications, they must also be safe, stable, reliable, have a long lifespan, and be easy to maintain. Utility Model Content

[0003] The purpose of the utility model is to realize that a solid-state power source meets the stable and reliable radio frequency requirements of a particle accelerator, and to propose an air-cooled solid-state power source device and system.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The first aspect of the present invention provides an air-cooled solid-state power source device, the device comprising:

[0006] A mainboard, wherein a radio frequency input terminal and a radio frequency output terminal are provided on the mainboard;

[0007] An input protection module, the input protection module being disposed on one side of the mainboard, one end of the input protection module being electrically connected to the RF input terminal of the mainboard, the input protection module being configured to perform limiting protection and filtering on an input RF signal transmitted from the RF input terminal of the mainboard, and output a stable first RF signal;

[0008] a pre-amplifier module, the pre-amplifier module being disposed on one side of the mainboard and located on one side of the input protection module, one end of the pre-amplifier module being electrically connected to the other end of the input protection module, the pre-amplifier module being configured to perform temperature-compensated attenuation and gain equalization within the bandwidth on the first RF signal, and output a second RF signal;

[0009] a final-stage power amplifier module, the final-stage power amplifier module being disposed on one side of the mainboard, the pre-stage power amplifier module being located on a side of the pre-stage power amplifier module away from the input protection module, one end of the final-stage power amplifier module being electrically connected to the other end of the pre-stage power amplifier module, the final-stage power amplifier module being configured to perform a final stage of amplification and coupled output on the second RF signal;

[0010] A main control module is provided on the other side of the main board. The main control module is electrically connected to the input protection module, the pre-stage power amplifier module, and the final stage power amplifier module. The main control module is used to monitor the overall operation of the power source and power amplifier and to detect the output RF signal of the coupled output;

[0011] A power supply module, which is disposed on the other side of the mainboard and is electrically connected to the main control module, and is used to provide power for the power amplifier operation of the solid-state power source device;

[0012] An air cooling module is provided on one side of the mainboard, the air cooling module is located below the final-stage power amplifier module and the pre-stage power amplifier module, the air cooling module is electrically connected to the main control module, and the air cooling module is used to perform air cooling and heat dissipation on the power amplifier operation according to the main control module.

[0013] In some feasible solutions, the input protection module includes:

[0014] a first attenuator, the first attenuator being electrically connected to the RF input terminal of the mainboard, and the first attenuator being used to reduce an input standing wave ratio of an input RF signal;

[0015] a first amplifier circuit, one end of the first amplifier circuit being electrically connected to the first attenuator, the first amplifier circuit being configured to perform signal gain amplification processing on the input RF signal after attenuation processing by the first attenuator;

[0016] a second attenuator, one end of the second attenuator being electrically connected to the other end of the first amplifying circuit, the second attenuator being configured to adjust the signal amplitude of the input RF signal after amplification by the first amplifying circuit;

[0017] a limiting circuit, one end of which is electrically connected to the other end of the second attenuator, the limiting circuit being configured to filter and limit the signal amplitude of the input RF signal processed by the second attenuator;

[0018] a third attenuator, one end of the third attenuator being electrically connected to the limiter circuit, and the third attenuator being configured to filter and limit the signal amplitude of the input radio frequency signal processed by the limiter circuit;

[0019] a radio frequency switching circuit, one end of which is electrically connected to the other end of the third attenuator, the radio frequency switching circuit being electrically connected to the main control module, and the radio frequency switching circuit being configured to perform radio frequency switching on the input radio frequency signal processed by the limiter circuit according to a control signal of the main control module;

[0020] a filter circuit, one end of which is electrically connected to the RF switch circuit, the filter circuit being configured to remove harmonics and clutter outside the bandwidth of the input RF signal processed by the RF switch circuit;

[0021] A second amplifier circuit, one end of the second amplifier circuit is connected to the other end of the filter circuit, the other end of the second amplifier circuit is electrically connected to the pre-stage power amplifier module, and the second amplifier circuit is used to perform a second signal amplification processing on the input RF signal processed by the filter circuit.

[0022] In some feasible solutions, the input protection module further includes:

[0023] a first voltage stabilizing circuit, wherein one end of the first voltage stabilizing circuit is electrically connected to the power supply module, and the other end of the first voltage stabilizing circuit is electrically connected to the first amplifying circuit and the second amplifying circuit respectively;

[0024] Wherein, the first voltage stabilizing circuit includes: a plurality of filter capacitors and voltage stabilizing diodes.

[0025] In some feasible solutions, the pre-stage power amplifier module includes:

[0026] a temperature compensation circuit, the temperature compensation circuit being electrically connected to the input protection module, and configured to perform temperature compensation on a first radio frequency signal obtained by processing an input radio frequency signal transmitted from the input end and processed by the input protection module;

[0027] a third amplifying circuit, the third amplifying circuit being connected to the temperature compensating circuit, and the third amplifying circuit dividing the first radio frequency signal into equal parts, removing the DC signal, and then resynthesizing the divided signal;

[0028] an equalizing circuit, the equalizing circuit being electrically connected to the third amplifying circuit, and configured to perform gain adjustment at different frequency points within a bandwidth on the first radio frequency signal processed by the third amplifying circuit;

[0029] a fourth amplifying circuit, the fourth amplifying circuit being electrically connected to the equalizing circuit, and configured to amplify the first RF signal after being amplified by the equalizing circuit;

[0030] a fifth amplifying circuit, the fifth amplifying circuit being electrically connected to the fourth amplifying circuit, and the fifth amplifying circuit being configured to amplify the first radio frequency signal processed by the fourth amplifying circuit;

[0031] A negative voltage control circuit is electrically connected to the main control module, and the negative voltage control circuit is electrically connected to the third amplifier circuit, the fourth amplifier circuit, and the fifth amplifier circuit respectively. The negative voltage control circuit is used to stabilize the power supply to the third amplifier circuit, the fourth amplifier circuit, and the fifth amplifier circuit according to the control signal of the main control module and the set power supply timing.

[0032] In some feasible solutions, the third amplifying circuit includes:

[0033] a first bridge connected to the temperature compensation circuit, configured to divide the first radio frequency signal processed by the temperature compensation circuit into two equal parts;

[0034] Two power amplifier tubes, the input ends of the two power amplifier tubes being electrically connected to the first bridge respectively, so as to enable the two power amplifier tubes to amplify the first radio frequency signal that is split into two parts;

[0035] The second bridge is electrically connected to the other ends of the two power amplifier tubes respectively, and the second bridge is used to synthesize the two first radio frequency signals that have been amplified by the two power amplifier tubes.

[0036] In some feasible solutions, the fifth amplifying circuit includes:

[0037] a circulator, the circulator having three pins, one pin of the circulator being electrically connected to the fourth amplifying circuit;

[0038] A power amplifier tube, the power amplifier tube being electrically connected to the second pin of the circulator;

[0039] A ceramic load is electrically connected to the three pins of the circulator.

[0040] In some feasible solutions, the negative pressure control circuit includes:

[0041] A plurality of ground capacitors, wherein the plurality of ground capacitors are respectively arranged at the input and output ends of the voltage regulator tube;

[0042] wherein the capacitance values ​​of the plurality of ground capacitors are different;

[0043] A voltage regulator diode, one end of which is electrically connected to the power supply module and the negative voltage control circuit through multiple capacitors to ground, and the other end of which is electrically connected to the third amplifier circuit, the fourth amplifier circuit, and the fifth amplifier circuit through multiple capacitors to ground.

[0044] In some feasible solutions, the final stage power amplifier module includes:

[0045] an equal current splitting circuit, wherein an input end of the equal current splitting circuit is electrically connected to the pre-stage power amplifier module, and the equal current splitting circuit is used to equally split the second radio frequency signal output by the pre-stage power amplifier module into multiple parts;

[0046] a plurality of circulators, each of which is connected to the output end of the equal current splitting circuit, and each of which receives a portion of the split second radio frequency signal;

[0047] a sixth amplifying circuit, each of which is connected to the plurality of circulators, and is configured to amplify the plurality of split second RF signals;

[0048] a synthesis circuit, wherein an input end of the synthesis circuit is electrically connected to the sixth amplification circuit, and the synthesis circuit is used to integrate and synthesize the second radio frequency signal after each split amplification;

[0049] A coupling detection circuit is electrically connected to the main control module and the synthesis circuit respectively, and is used to detect the second radio frequency signal output by the synthesis circuit according to the control signal of the main control module.

[0050] In some feasible solutions, the equal current splitting circuit includes: a Wilkinson 1:3 divider with a microstrip structure;

[0051] The synthesis circuit includes a Wilkinson 1:3 synthesizer with a microstrip structure.

[0052] In a second aspect, the present invention provides a solid-state power source system, which adopts an air-cooled solid-state power source device as described in any one of the first aspects.

[0053] The beneficial effects of the utility model are:

[0054] In an embodiment of the utility model, an input protection module, a front-stage power amplifier module, and a final-stage power amplifier module are connected in series to form a radio frequency link. The input protection module is used to perform limiting protection and filtering on the input radio frequency signal transmitted from the input end, and then inputs a first radio frequency signal. The front-stage power amplifier module is then used to perform temperature-compensated attenuation and gain equalization within the bandwidth on the first radio frequency signal, and outputs a second radio frequency signal after amplification. The final-stage power amplifier module is then used to perform a final amplification on the second radio frequency signal, and the radio frequency signal after the final amplification is detected by the main control module and then coupled out, so as to enable the solid-state power source to output a stable and reliable output radio frequency signal, thereby meeting the stable and reliable radio frequency requirements of the particle accelerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1This is a schematic diagram of the overall structure of an air-cooled solid-state power source device provided in an embodiment of the present invention (from the perspective of the pre-amplifier module);

[0056] Figure 2 This is a schematic diagram of the overall structure of an air-cooled solid-state power source device provided in an embodiment of the present utility model (from the perspective of the main control module);

[0057] Figure 3 This is a schematic diagram of the overall structural connection of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0058] Figure 4 This is a schematic diagram of the connection structure of an input protection module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0059] Figure 5 This is a circuit connection diagram of an input protection module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0060] Figure 6 This is a schematic diagram of a first voltage stabilizing circuit in an input protection module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0061] Figure 7 This is a schematic diagram of a first amplifier circuit and a limiter circuit in an input protection module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0062] Figure 8 This is a schematic diagram of a radio frequency switch circuit, a filter circuit, and a second amplifier circuit in an input protection module of an air-cooled solid-state power source device provided in an embodiment of the present invention;

[0063] Figure 9 This is a schematic diagram of the connection structure of a pre-amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0064] Figure 10 This is a circuit connection diagram of a pre-amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0065] Figure 11 This is a circuit diagram of a temperature compensation circuit, a third amplifying circuit, an equalizing circuit, and a fourth amplifying circuit in a pre-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0066] Figure 12 This is a schematic diagram of a fifth amplifier circuit and a limiting circuit in a pre-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0067] Figure 13 This is a schematic diagram of a second voltage stabilizing circuit in a front-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0068] Figure 14 This is a schematic diagram of a negative voltage control circuit in a front-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0069] Figure 15 This is a schematic diagram of the connection structure of the final power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0070] Figure 16 This is a circuit connection diagram of a final-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0071] Figure 17 This is a schematic diagram of a medium shunt circuit in a final-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0072] Figure 18 This is a schematic diagram of a gate voltage power supply circuit in a final-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0073] Figure 19 This is a schematic diagram of a negative voltage timing control circuit and multiple bias circuits in a final-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0074] Figure 20 This is a schematic diagram of a synthesis circuit in a final-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0075] Figure 21 This is a schematic diagram of a coupling detection circuit in a final-stage power amplifier module of an air-cooled solid-state power source device provided in an embodiment of the present utility model;

[0076] Figure 22 This is a schematic structural diagram of a power supply module of an air-cooled solid-state power source device provided in an embodiment of the present utility model.

[0077] The markings in the figure are as follows:

[0078] 1. Mainboard; 11. RF input terminal; 12. RF output terminal;

[0079] 2. Pre-amplifier module;

[0080] 3. Input protection module;

[0081] 4. Final power amplifier module;

[0082] 5. Air cooling module;

[0083] 6. First switching power supply;

[0084] 7. Main control module;

[0085] 8. Second switching power supply;

[0086] 9. Current monitoring unit. DETAILED DESCRIPTION

[0087] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0088] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0089] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0090] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0091] Example

[0092] Reference Figures 1 to 22In order to enable the solid-state power source to meet the stable and reliable RF requirements of the particle accelerator, the utility model provides an air-cooled solid-state power source device, the device including a main board 1, and a RF input terminal 11 and a RF output terminal 12 are provided on one side of the main board 1. The RF input terminal 11 of the main board 1 is used to connect and transmit the input RF signal, and the RF output terminal 12 of the main board 1 is used to connect and transmit the output RF signal after being processed by the solid-state power source, that is, the RF input terminal 11 of the main board 1 is connected to the signal source (generating the RF excitation signal), and the RF output terminal 12 of the main board 1 is connected to the particle accelerator. Therefore, in order to enable the output RF signal of the solid-state power source to meet the stable and reliable RF requirements of the particle accelerator, the device also includes: an input protection module 3, a pre-stage power amplifier module 2, a final stage power amplifier module 4, a power supply module, an air-cooling module 5 and a main control module 7. The input protection module 3 is disposed on one side of the mainboard 1. One end of the input protection module 3 is electrically connected to the RF input terminal 11 of the mainboard 1. The input protection module 3 is used to perform limiting protection and filtering on the input RF signal transmitted from the RF input terminal 11 of the mainboard 1, allowing the other end of the input protection module 3 to output a stable first RF signal. The pre-stage power amplifier module 2 is disposed on one side of the mainboard 1. The pre-stage power amplifier module 2 is located on one side of the input protection module 3. One end of the pre-stage power amplifier module 2 is electrically connected to the other end of the input protection module 3. The pre-stage power amplifier module 2 is used to perform temperature-compensated attenuation and within-bandwidth gain equalization on the first RF signal after the input protection module 3 has performed limiting protection and filtering, and then amplify the first RF signal to output a second RF signal. The final power amplifier module 4 is disposed on one side of the mainboard 1. The pre-amplifier module 2 is located on a side of the pre-amplifier module 2 away from the input protection module 3. One end of the final power amplifier module 4 is electrically connected to the other end of the pre-amplifier module 2. The final power amplifier module 4 is used to perform temperature compensation attenuation and bandwidth gain equalization on the second RF signal after being amplified by the pre-amplifier module 2, as well as perform the final stage of amplification and coupled output, so as to achieve a stable and reliable output RF signal through the transmission end. The main control module 7 is disposed on the other side of the mainboard 1. The main control module 7 is electrically connected to the input protection module 3, the pre-amplifier module 2, and the final power amplifier module 4. The main control module 7 is used to monitor the overall operation of the power source amplifier and detect the coupled output RF signal. The power supply module is disposed on the other side of the mainboard 1. The power supply module is electrically connected to the main control module 7 and is used to provide power for the power amplifier operation of the solid-state power source device.The air cooling module 5 is disposed on one side of the mainboard 1 and is located below the final-stage power amplifier module 4 and the pre-stage power amplifier module 2. The air cooling module 5 is electrically connected to the main control module 7 and is used to cool the power amplifier according to the main control module 7. In this embodiment, an RF chain is formed by connecting the input protection module 3, the pre-stage power amplifier module 2, and the final-stage power amplifier module 4 in series. The input protection module 3 performs limiter protection and filtering on the input RF signal transmitted from the RF input terminal 11 of the mainboard 1, and then inputs a first RF signal. The pre-stage power amplifier module 2 then performs temperature compensation attenuation and bandwidth gain equalization on the first RF signal, and then amplifies and outputs a second RF signal. The final-stage power amplifier module 4 then performs a final amplification on the second RF signal, and the final amplified RF signal is detected by the main control module 7 and then coupled out, thereby achieving a stable and reliable output RF signal from the solid-state power source, thereby meeting the stable and reliable RF requirements of the particle accelerator. It should be noted that the preferred frequency band for this solid-state power source is 3.8GHz to 4.2GHz / 150W, that is, this solid-state power source device can be used in the 3.8GHz to 4.2GHz / 150W frequency band. Of course, the frequency band can also be adjusted according to usage requirements.

[0093] Reference Figure 4 and Figure 8To facilitate understanding of how the input protection module 3 performs limiting protection and filtering on the input RF signal transmitted from the input terminal, the following description is provided. Specifically, the input protection module 3 includes: a first attenuator, a first amplifier circuit, a second attenuator, a limiting circuit, a third attenuator, an RF switching circuit, a filtering circuit, and a second amplifier circuit. The first attenuator is electrically connected to the RF input terminal 11 of the mainboard 1 and is configured to perform π-type attenuation on the input RF signal transmitted from the RF input terminal 11 of the mainboard 1, thereby allowing the first attenuator to reduce the input standing wave ratio of the input RF signal. One end of the first amplifier circuit can be electrically connected to the first attenuator via a DC blocking capacitor. The first amplifier circuit is configured to perform a first signal gain amplification on the input RF signal after attenuation by the first attenuator. One end of the second attenuator can be electrically connected to the other end of the first amplifier circuit via a DC blocking capacitor. The second attenuator is configured to adjust the amplitude of the input RF signal after amplification by the first amplifier circuit, so that the input RF signal processed by the second attenuator meets the limiting level requirements of the subsequent limiting circuit. One end of the limiting circuit is electrically connected to the other end of the second attenuator. The limiting circuit is used to filter and limit the signal amplitude of the input RF signal processed by the second attenuator to prevent the excessive power of the input RF signal from damaging subsequent devices. One end of the third attenuator can be electrically connected to the limiting circuit via a DC blocking capacitor. The third attenuator is used to filter and limit the signal amplitude of the input RF signal processed by the limiting circuit to prevent damage to subsequent devices due to excessive input power of the input RF signal processed by the limiting circuit. One end of the RF switching circuit is electrically connected to the other end of the third attenuator via a DC blocking capacitor. The RF switching circuit is electrically connected to the main control module 7. The RF switching circuit is used to perform RF switching on the input RF signal processed by the limiting circuit according to the control signal of the main control module 7. One end of the filter circuit can be electrically connected to the RF switching circuit via a DC blocking capacitor. The filter circuit is used to remove harmonics and noise outside the bandwidth of the input RF signal processed by the RF switching circuit. One end of the second amplifier circuit is connected to the other end of the filter circuit through a DC blocking capacitor, and the other end of the second amplifier circuit can be electrically connected to the pre-stage power amplifier module 2 through a DC blocking capacitor. The second amplifier circuit is used to perform a second signal amplification process on the input RF signal processed by the filter circuit, and to isolate the DC signal of the input RF signal processed by the second amplifier circuit through a DC blocking capacitor, and then output the input RF signal. Here, in order to ensure the power supply stability of the signal amplification in the input protection module 3, a first voltage stabilizing circuit is also provided, one end of the first voltage stabilizing circuit is electrically connected to the power supply module, and the other end of the first voltage stabilizing circuit is electrically connected to the first amplifier circuit and the second amplifier circuit respectively. Wherein, referring to Figure 5 and Figure 6 The first voltage-stabilizing circuit further includes: multiple filter capacitors and a voltage-stabilizing diode, so that the supply voltage from the power supply module passes through the multiple filter capacitors before entering the voltage-stabilizing diode. The DC voltage output by the voltage-stabilizing diode then passes through the multiple filter capacitors and, via the inductor, supplies power to the first and second amplifier circuits. Furthermore, in this embodiment, the amplitude limiting circuit can select an appropriate limiter based on actual power usage.

[0094] Reference Figure 9 and Figure 14To facilitate understanding of how the pre-amplifier module 2 performs temperature-compensated attenuation and bandwidth-balanced gain on the first RF signal processed by the input protection module 3, and then outputs a second RF signal, the following description is provided. Specifically, the pre-amplifier module 2 includes a temperature-compensated circuit, a third amplifying circuit, an equalizing circuit, a fourth amplifying circuit, a fifth amplifying circuit, and a negative voltage control circuit. The temperature-compensated circuit is electrically connected to the input protection module 3 and is used to perform temperature compensation on the first RF signal obtained by processing the input RF signal transmitted from the input end by the input protection module 3, thereby meeting the temperature compensation requirements of the multi-stage power amplification of the first RF signal. The third amplifying circuit is connected to the temperature-compensated circuit via a DC-blocking capacitor and divides the first RF signal into equal parts, removing the DC signal and re-synthesizing it. The equalizing circuit is electrically connected to the third amplifying circuit and is used to perform gain adjustment on the first RF signal processed by the third amplifying circuit at different frequencies within the bandwidth. The fourth amplifying circuit is electrically connected to the equalizing circuit and is used to amplify the first RF signal after gain adjustment by the equalizing circuit. The fifth amplifier circuit is electrically connected to the fourth amplifier circuit. The fifth amplifier circuit is used, on the one hand, to amplify the first RF signal processed by the fourth amplifier circuit, and on the other hand, to improve the isolation between the amplifier circuits at each stage, while also improving the anti-total reflection capability of the pre-stage power amplifier module 2. Because power amplifier tubes are provided between the third, fourth, and fifth amplifier circuits in the pre-stage power amplifier module 2, especially when GaN power amplifier tubes are used, the power amplifier tubes have strict requirements on the power-on sequence of gate voltage and drain voltage. Therefore, a negative voltage control circuit is also required. The negative voltage control circuit is electrically connected to the main control module 7. The negative voltage control circuit is electrically connected to the third, fourth, and fifth amplifier circuits, respectively. The negative voltage control circuit is used to stabilize the power supply to the third, fourth, and fifth amplifier circuits according to a set power supply sequence based on the control signal of the main control module 7. That is, after the first RF signal processed by the front-stage power amplifier module 2 is subjected to temperature compensation, shunt power amplifier isolation synthesis, equalization gain, and amplification isolation in sequence, the second input RF signal is output to the final-stage power amplifier module 4 to ensure that the second output signal entering the final-stage power amplifier module 4 is stable.

[0095] Reference Figure 10In this embodiment, the stability of the first radio frequency signal entering the fourth amplifier circuit is ensured. The third amplifier circuit includes: two power amplifier tubes, a first bridge and a second bridge. The first bridge is connected to the temperature compensation circuit through a DC blocking capacitor, and is used to divide the first radio frequency signal processed by the temperature compensation circuit into two equal parts. The input ends of the two power amplifier tubes are respectively electrically connected to the first bridge, so that the two power amplifier tubes can respectively amplify the first radio frequency signal divided into two parts. The second bridge is electrically connected to the other ends of the two power amplifier tubes through two DC blocking capacitors. The second bridge is used to synthesize the two first radio frequency signals that have been amplified by the two power amplifier tubes, so as to realize signal integration and filtering of the DC signal of the first radio frequency signal after its processing. This can then ensure the stability of the subsequent signal power amplification.

[0096] Reference Figure 12 Specifically, the fifth amplifier circuit includes a circulator, a ceramic load, and a power amplifier tube. The circulator has three pins, one of which is electrically connected to the fourth amplifier circuit via a DC blocking capacitor. The power amplifier tube is electrically connected to the second pin of the circulator. The ceramic load is electrically connected to the third pin of the circulator. By adding the circulator and its load to the fifth amplifier circuit, the isolation between the various amplifier circuits can be improved, while also enhancing the anti-total reflection capability of the pre-stage power amplifier module 2.

[0097] Reference Figure 13 and Figure 14 In this embodiment, in order to ensure that the negative voltage control circuit can normally provide stable voltage supply to the third amplifier circuit, the fourth amplifier circuit, and the fifth amplifier circuit, the negative voltage control circuit includes: a second voltage stabilizing circuit and a plurality of ground capacitors. The plurality of ground capacitors are respectively arranged at the input and output ends of the second voltage stabilizing circuit, and the capacitance values ​​of the plurality of ground capacitors are different. One end of the second voltage stabilizing circuit is electrically connected to the power supply module and the negative voltage control circuit through a plurality of ground capacitors, and the other end of the second voltage stabilizing circuit is electrically connected to the third amplifier circuit, the fourth amplifier circuit, and the fifth amplifier circuit through a plurality of ground capacitors, so as to realize power supply to the third amplifier circuit, the fourth amplifier circuit, and the fifth amplifier circuit according to different power supply requirements. Preferably, the second voltage stabilizing circuit can be set as: a voltage regulator tube.

[0098] In a feasible embodiment, the temperature compensation circuit may be selected as a temperature compensation attenuator to achieve temperature compensation for the multi-stage power amplifier of the first radio frequency signal.

[0099] Reference Figures 15 to 21In this embodiment, to facilitate understanding of how the final-stage power amplifier module 4 performs temperature-compensated attenuation and bandwidth-based gain equalization on the second RF signal processed by the pre-stage power amplifier module 2, and how it performs the final stage of amplification and coupled output, the following description is provided. Specifically, the final-stage power amplifier module 4 includes an equal-splitting circuit, multiple circulators, a sixth amplifying circuit, a combining circuit, and a coupling detection circuit. The input end of the equal-splitting circuit is electrically connected to the pre-stage power amplifier module 2. The equal-splitting circuit is configured to equally divide the second RF signal processed and output by the pre-stage power amplifier module 2 into multiple parts. The multiple circulators are respectively connected to the output end of the equal-splitting circuit, each circulator receiving a portion of the divided second RF signal. The input end of the sixth amplifying circuit is respectively connected to the multiple circulators. The sixth amplifying circuit is configured to amplify the multiple divided second RF signals. The input end of the combining circuit is electrically connected to the multiple sixth amplifying circuits. The combining circuit is configured to combine each of the divided and amplified second RF signals to ensure that the combined second RF signal meets RF requirements. Specifically, the sixth amplifying circuit includes: a plurality of power amplifier tubes, the input and output ends of the plurality of power amplifier tubes being respectively connected to the plurality of circulators, and the plurality of power amplifier tubes being respectively used to amplify the plurality of split second RF signals. The coupling detection circuit is respectively electrically connected to the main control module 7 and the synthesis circuit, and the coupling detection circuit is used to perform detection on the second RF signal output by the synthesis circuit according to the control signal of the main control module 7, and to determine whether the output power detection of the second RF signal processed by the synthesis circuit is qualified. In this embodiment, in order to facilitate the coupling detection circuit to perform output power detection on the second RF signal processed by the synthesis circuit, a parallel line coupling structure is electrically connected to the output end of the synthesis circuit, and accordingly, the coupling detection circuit is also a parallel line coupling structure. In addition, it should be noted that the number of circulators can be set according to RF requirements. The circulator in the final-stage power amplifier module 4 has the same function as the circulator in the pre-stage power amplifier module 2, which can be used to improve the isolation of signal amplification processing and also improve the anti-total reflection capability of the final-stage power amplifier module 4. The connection method of the circulator in the final-stage power amplifier module 4 can be as follows: 7 circulators can be provided, and three circulators are electrically connected at the input ends of the three power amplifier tubes. These three circulators are the same as the circulators in the pre-stage power amplifier unit, with a power tolerance of 100W and an insertion loss of approximately 0.3dB. Pin 3 of the circulator is connected to a 60W ceramic load, and pin 2 is connected to the final amplifier; three circulators are also electrically connected at the output ends of the three power amplifier tubes. These three circulators are the same as the previous three, that is, with a power tolerance of 100W and an insertion loss of approximately 0.3dB. Pin 3 of the circulator is connected to a 150W ceramic load. The last circulator is electrically connected to the output end of the synthesis circuit to improve the isolation and stability of the synthesized second RF signal.

[0100] Reference Figures 17 to 19 In this embodiment, to ensure that the multiple power amplifier tubes can stably perform power amplification processing on each of the split second RF signals, the final-stage power amplifier module 4 further includes: multiple negative voltage timing control circuits, multiple bias circuits, and a gate voltage supply circuit. The three negative voltage timing control circuits are electrically connected to the three power amplifier tubes. When the power amplifier tubes in the final-stage power amplifier module 4 are GaN power amplifier tubes, strict requirements can be imposed on the gate voltage and drain voltage power-on timing, thereby ensuring the reliability of the power amplifier tube signal amplification processing. The multiple bias circuits are electrically connected to the three power amplifier tubes. The bias circuits also include a fan-shaped microstrip line region to ensure that the second RF signal does not affect the power supply module, thus ensuring stable power supply. The gate voltage supply circuit is electrically connected to the power supply module and the negative voltage timing control circuit. The gate voltage supply circuit includes a potentiometer and a voltage regulator. By adding a potentiometer to the gate voltage supply circuit to ensure adjustable gate voltage and a voltage regulator to ensure that the adjusted gate voltage does not change, the reliable operation of the final-stage power amplifier module 4 is guaranteed.

[0101] In this embodiment, preferably, the equal-splitting circuit can be a Wilkinson 1:3 divider with a microstrip structure, so that the second RF signal is equally divided into three parts according to RF requirements via the equal-splitting circuit. Correspondingly, the combining circuit can be a Wilkinson 1:3 combiner with a microstrip structure, so that the second RF signal, which is equally divided into three parts, can be combined.

[0102] In this embodiment, the main control module 7 is electrically connected to the RF switch circuit in the input protection module 3. The main control module 7 can output a TTL signal to the input protection module 3 to control the RF switch in the input protection module 3. The main control module 7 is electrically connected to the negative voltage control circuit in the pre-amplifier module 2 and the negative voltage timing control circuit in the final amplifier module 4, respectively, to enable the main control module 7 to control the power supply switches of the pre-amplifier module 2 and the final amplifier module 4. The main control module 7 is electrically connected to the coupling detection circuit. The main control module 7 receives the output power and reflected power detection signals input from the coupler and displays the output power and reflected power in combination with the power and voltage corresponding curves within the main control unit. In this embodiment, to monitor the temperature of the solid-state power source device, the main control module 7 is also equipped with a temperature sensor. The main control module 7 receives the digital temperature signal input from the temperature sensor to display the temperature within the chassis, and then uses the air cooling module 5 for heat dissipation and cooling. In other words, the main control module 7 is electrically connected to the air cooling module 5. Specifically, the air-cooling module 5 can be provided with a corresponding heat dissipation fan according to the cooling demand. The main control module 7 is also provided with a current sensor, which uses the current sensor to detect the electrical signal of the power supply current, that is, the current signal (detection voltage) input from the current sensor, to realize the display of the power supply current. In addition, it should be noted that, in this embodiment, the main control module 7 can interlock and communicate the power amplifier operation of the input protection module 3, the pre-stage power amplifier module 2 and the final stage power amplifier module 4 according to the actual monitoring situation to ensure that the power amplifier operation of the solid-state power source is safe and reliable. That is, the main control module 7 is also provided with a current monitoring unit 9, and the current monitoring unit 9 is provided in electrical connection with the power supply module.

[0103] Reference Figure 22 The power supply module includes: a first switching power supply 6, two second switching power supplies 8, and a power filter. The input end of the power filter is connected to the input of the power supply module, and the output end of the power filter is electrically connected to the first switching power supply 6 and the two second switching power supplies 8, respectively. The first switching power supply 6 is a 28V DC AC / DC, and the two second switching power supplies 8 are 12V DC AC / DC, so as to filter the 220V AC power external to the power supply module. The power supply is then electrically connected to an AC / DC that converts 220V AC to 28V DC and two AC / DCs that convert 220V AC to 12V DC, so that the power supply module can convert the overall power supply to the voltage required by the component units and power each module.

[0104] In a second aspect, the present invention provides a solid-state power source system, which adopts the solid-state power source device described above. The solid-state power source system adopts the solid-state power source device described above, and connects an input protection module 3, a pre-stage power amplifier module 2, and a final power amplifier module 4 in series to form a radio frequency link. The input protection module 3 is used to perform limiting protection and filtering on the input radio frequency signal transmitted from the input end, and then inputs a first radio frequency signal; the pre-stage power amplifier module 2 is used to perform temperature compensation attenuation and gain equalization within the bandwidth on the first radio frequency signal, and outputs a second radio frequency signal after amplification; the final power amplifier module 4 is then used to perform a final stage amplification on the second radio frequency signal, and the radio frequency signal after the final stage amplification is detected by the main control module 7 and then coupled out, so as to enable the solid-state power source to output a stable and reliable output radio frequency signal, thereby meeting the stable and reliable radio frequency requirements of the particle accelerator.

[0105] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air-cooled solid-state power source device, characterized in that: The device comprises: A mainboard, wherein a radio frequency input terminal and a radio frequency output terminal are provided on the mainboard; An input protection module, the input protection module being disposed on one side of the mainboard, one end of the input protection module being electrically connected to the RF input terminal of the mainboard, the input protection module being configured to perform limiting protection and filtering on an input RF signal transmitted from the RF input terminal of the mainboard, and output a stable first RF signal; a pre-amplifier module, the pre-amplifier module being disposed on one side of the mainboard and located on one side of the input protection module, one end of the pre-amplifier module being electrically connected to the other end of the input protection module, the pre-amplifier module being configured to perform temperature-compensated attenuation and gain equalization within the bandwidth on the first RF signal, and output a second RF signal; a final-stage power amplifier module, the final-stage power amplifier module being disposed on one side of the mainboard, the pre-stage power amplifier module being located on a side of the pre-stage power amplifier module away from the input protection module, one end of the final-stage power amplifier module being electrically connected to the other end of the pre-stage power amplifier module, the final-stage power amplifier module being configured to perform a final stage of amplification and coupled output on the second RF signal; A main control module is provided on the other side of the main board. The main control module is electrically connected to the input protection module, the pre-stage power amplifier module, and the final stage power amplifier module. The main control module is used to monitor the overall operation of the power source and power amplifier and to detect the output RF signal of the coupled output; A power supply module, which is disposed on the other side of the mainboard and is electrically connected to the main control module, and is used to provide power for the power amplifier operation of the solid-state power source device; An air cooling module is provided on one side of the mainboard, the air cooling module is located below the final-stage power amplifier module and the pre-stage power amplifier module, the air cooling module is electrically connected to the main control module, and the air cooling module is used to perform air cooling and heat dissipation on the power amplifier operation according to the main control module.

2. The air-cooled solid-state power source device according to claim 1, characterized in that: The input protection module includes: a first attenuator, the first attenuator being electrically connected to the RF input terminal of the mainboard, and the first attenuator being used to reduce an input standing wave ratio of an input RF signal; a first amplifier circuit, one end of the first amplifier circuit being electrically connected to the first attenuator, the first amplifier circuit being configured to perform signal gain amplification processing on the input RF signal after attenuation processing by the first attenuator; a second attenuator, one end of the second attenuator being electrically connected to the other end of the first amplifying circuit, the second attenuator being configured to adjust the signal amplitude of the input RF signal after amplification by the first amplifying circuit; a limiting circuit, one end of which is electrically connected to the other end of the second attenuator, the limiting circuit being configured to filter and limit the signal amplitude of the input RF signal processed by the second attenuator; a third attenuator, one end of the third attenuator being electrically connected to the limiter circuit, and the third attenuator being configured to filter and limit the signal amplitude of the input radio frequency signal processed by the limiter circuit; a radio frequency switching circuit, one end of which is electrically connected to the other end of the third attenuator, the radio frequency switching circuit being electrically connected to the main control module, and the radio frequency switching circuit being configured to perform radio frequency switching on the input radio frequency signal processed by the limiter circuit according to a control signal of the main control module; a filter circuit, one end of which is electrically connected to the RF switch circuit, the filter circuit being configured to remove harmonics and clutter outside the bandwidth of the input RF signal processed by the RF switch circuit; A second amplifier circuit, one end of the second amplifier circuit is connected to the other end of the filter circuit, the other end of the second amplifier circuit is electrically connected to the pre-stage power amplifier module, and the second amplifier circuit is used to perform a second signal amplification processing on the input RF signal processed by the filter circuit.

3. The air-cooled solid-state power source device according to claim 2, characterized in that: The input protection module further includes: a first voltage stabilizing circuit, wherein one end of the first voltage stabilizing circuit is electrically connected to the power supply module, and the other end of the first voltage stabilizing circuit is electrically connected to the first amplifying circuit and the second amplifying circuit respectively; Wherein, the first voltage stabilizing circuit includes: a plurality of filter capacitors and voltage stabilizing diodes.

4. The air-cooled solid-state power source device according to claim 3, characterized in that: The front-stage power amplifier module includes: a temperature compensation circuit, the temperature compensation circuit being electrically connected to the input protection module, and configured to perform temperature compensation on a first radio frequency signal obtained by processing an input radio frequency signal transmitted from the input end and processed by the input protection module; a third amplifying circuit, the third amplifying circuit being connected to the temperature compensating circuit, and the third amplifying circuit dividing the first radio frequency signal into equal parts, removing the DC signal, and then resynthesizing the divided signal; an equalizing circuit, the equalizing circuit being electrically connected to the third amplifying circuit, and configured to perform gain adjustment at different frequency points within a bandwidth on the first radio frequency signal processed by the third amplifying circuit; a fourth amplifying circuit, the fourth amplifying circuit being electrically connected to the equalizing circuit, and configured to amplify the first RF signal after being amplified by the equalizing circuit; a fifth amplifying circuit, the fifth amplifying circuit being electrically connected to the fourth amplifying circuit, and the fifth amplifying circuit being configured to amplify the first radio frequency signal processed by the fourth amplifying circuit; A negative voltage control circuit is electrically connected to the main control module, and the negative voltage control circuit is electrically connected to the third amplifier circuit, the fourth amplifier circuit, and the fifth amplifier circuit respectively. The negative voltage control circuit is used to stabilize the power supply to the third amplifier circuit, the fourth amplifier circuit, and the fifth amplifier circuit according to the control signal of the main control module and the set power supply timing.

5. The air-cooled solid-state power source device according to claim 4, characterized in that: The third amplifying circuit includes: a first bridge connected to the temperature compensation circuit, configured to divide the first radio frequency signal processed by the temperature compensation circuit into two equal parts; Two power amplifier tubes, the input ends of the two power amplifier tubes being electrically connected to the first bridge respectively, so as to enable the two power amplifier tubes to amplify the first radio frequency signal that is split into two parts; The second bridge is electrically connected to the other ends of the two power amplifier tubes respectively, and the second bridge is used to synthesize the two first radio frequency signals that have been amplified by the two power amplifier tubes.

6. The air-cooled solid-state power source device according to claim 5, characterized in that: The fifth amplifying circuit includes: a circulator, the circulator having three pins, one pin of the circulator being electrically connected to the fourth amplifying circuit; A power amplifier tube, the power amplifier tube being electrically connected to the second pin of the circulator; A ceramic load is electrically connected to the three pins of the circulator.

7. The air-cooled solid-state power source device according to claim 6, characterized in that: The negative pressure control circuit comprises: A plurality of ground capacitors, wherein the plurality of ground capacitors are respectively arranged at the input and output ends of the voltage regulator tube; wherein the capacitance values ​​of the plurality of ground capacitors are different; A voltage regulator diode, one end of which is electrically connected to the power supply module and the negative voltage control circuit through multiple capacitors to ground, and the other end of which is electrically connected to the third amplifier circuit, the fourth amplifier circuit, and the fifth amplifier circuit through multiple capacitors to ground.

8. The air-cooled solid-state power source device according to claim 7, characterized in that: The final stage power amplifier module comprises: an equal current splitting circuit, wherein an input end of the equal current splitting circuit is electrically connected to the pre-stage power amplifier module, and the equal current splitting circuit is used to equally split the second radio frequency signal output by the pre-stage power amplifier module into multiple parts; a plurality of circulators, each of which is connected to the output end of the equal current splitting circuit, and each of which receives a portion of the split second radio frequency signal; a sixth amplifying circuit, each of which is connected to the plurality of circulators, and is configured to amplify the plurality of split second RF signals; a synthesis circuit, wherein an input end of the synthesis circuit is electrically connected to the sixth amplification circuit, and the synthesis circuit is used to integrate and synthesize the second radio frequency signal after each split amplification; A coupling detection circuit is electrically connected to the main control module and the synthesis circuit respectively, and is used to detect the second radio frequency signal output by the synthesis circuit according to the control signal of the main control module.

9. The air-cooled solid-state power source device according to claim 8, characterized in that: The equal current splitting circuit comprises: a Wilkinson 1:3 divider with a microstrip structure; The synthesis circuit includes a Wilkinson 1:3 synthesizer with a microstrip structure.

10. An air-cooled solid-state power source system, characterized in that: An air-cooled solid-state power source device according to any one of claims 1 to 9 is used.

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