A broadband power amplifier device for drone communications

Abstract

The application belongs to the field of communication devices, and particularly relates to a wideband power amplifier device for unmanned aerial vehicle communication, which comprises a main body, a fixed bin, a heat conduction plate, at least two grooves, an air pressure bin, a movable shaft, a plurality of tooth grooves, a conduction mechanism and an adjusting probe.

Description

Technical Field

[0001] This invention relates to the field of communication devices, specifically a broadband power amplifier device for communication of unmanned aerial vehicles (UAVs). Background Technology

[0002] Broadband power amplifiers are the core components for achieving long-distance, highly reliable wireless transmission in drone communication. Their performance directly affects the drone's communication range, anti-interference capability, and signal quality. Broadband power amplifiers are usually integrated into the drone's transmission link and are responsible for amplifying the weak radio frequency signal after baseband processing to the tens to hundreds of watts level to overcome free space loss and achieve long-distance transmission.

[0003] The existing technology also has the following shortcomings: power regulation relies heavily on electronic control modules, which have slow response speed and are susceptible to electromagnetic interference. The regulation accuracy is insufficient, making it difficult to adapt to the complex communication environment requirements during UAV flight. At the same time, the heat dissipation mechanism is independent of the power regulation, and the heat dissipation efficiency cannot be dynamically adjusted according to power changes, resulting in heat dissipation redundancy at low power and insufficient heat dissipation at high power, which can easily cause overheating and damage to the device. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, such as low power regulation accuracy and poor heat dissipation and power adaptability of broadband power amplifiers, this invention proposes a broadband power amplifier device for UAV communication.

[0005] The technical solution adopted by this invention to solve its technical problem is: a broadband power amplifier device for UAV communication, comprising:

[0006] The main body, which is mounted on the drone body, includes a fixed compartment. A heat-conducting plate is fixedly installed in the inner cavity of the fixed compartment. The fixed compartment has at least two slots. The main body also includes a fixing plate, which is fixed in the inner cavity of the fixed compartment. A power amplifier unit and a broadband impedance matching component are fixedly installed on the top of the heat-conducting plate. The input terminal of the power amplifier unit is used to receive the radio frequency input signal of the drone communication system, and its output terminal is electrically connected to the input terminal of the broadband impedance matching component.

[0007] A pressure chamber, the pressure chamber having a movable shaft, the direction of the movable shaft being set as a first direction, the movable shaft being driven by atmospheric pressure to move axially along the first direction, the movable shaft having a plurality of toothed grooves;

[0008] A transmission mechanism, mounted on a fixed chamber, includes an adjustment probe. The two sides of the adjustment probe are slidably connected to a gradient microstrip impedance line, which is used for broadband impedance matching of the amplified signal output by the power amplifier unit. The pressure chamber can provide power to the transmission mechanism through a movable shaft, causing the adjustment probe to slide on the gradient microstrip impedance line, thereby forming broadband power adjustment for communication.

[0009] Preferably, the conduction mechanism includes a connecting rod, and the body is equipped with a heat dissipation mechanism with at least two heat dissipation fins. The heat dissipation fins are located directly below the heat conduction plate to absorb the heat dissipated from the heat conduction plate. When the movable shaft moves in the first direction, the heat dissipation fins can be expanded or contracted along the groove opened in the fixed compartment.

[0010] The heat dissipation mechanism includes a transmission gear, which meshes with a plurality of toothed grooves on a movable shaft. One side of the outer surface of the movable shaft is hinged to a connecting rod, so that when the movable shaft moves in the first direction, the transmission gear rotates as it meshes with the toothed grooves, and the end face of the connecting rod moves synchronously in the first direction.

[0011] Preferably, the air pressure chamber includes a connector, an elastic metal diaphragm, a separation plate, and a rubber shock-absorbing pad; the elastic metal diaphragm is fixed to the top of the connector, so that the connector has a sealed cavity; the separation plate has a throttling hole; the separation plate is fixed in the sealed cavity formed by the connector and the elastic metal diaphragm, so that the sealed cavity is divided into two chambers; the top of the elastic metal diaphragm is fixedly connected to the movable shaft through the rubber shock-absorbing pad.

[0012] Preferably, the air chamber further includes a mounting plate, a first magnetic coupling plate, a limiting rod, a reset damper, a second magnetic coupling plate, and an arc-shaped metal plate. The mounting plate is fixedly installed at the bottom of the connector. The mounting plate is rotatably connected to the first magnetic coupling plate via the reset damper. The mounting plate has a limiting groove, and the limiting groove is slidably connected to a limiting rod. The limiting rod is fixed to one end of the first magnetic coupling plate, so that the mounting plate limits the degree of freedom of movement of the first magnetic coupling plate by the limiting groove. The second magnetic coupling plate is rotatably installed in the sealed cavity formed by the connector and the elastic metal diaphragm. The arc-shaped metal plate is located on the bottom side of the throttling orifice opened in the separation plate and is fixed to the second magnetic coupling plate. The second magnetic coupling plate and the first magnetic coupling plate are magnetically coupled to each other, so that the arc-shaped metal plate can be reset by the cooperation of the reset damper and the first magnetic coupling plate.

[0013] Preferably, the transmission mechanism further includes two sliders, a slide rail, and a fixing block; the bottom of one of the sliders is hinged to one end of a connecting rod, and the slider is fixed to the other slider by a connecting block, and is slidably connected to the slide rail respectively; the top of the other slider is fixed to the fixing block, and an adjustment probe is fixedly installed on the fixing block.

[0014] Preferably, the heat dissipation mechanism further includes a transmission gear, a bearing, a transmission shaft, and a drive bevel gear; both ends of the transmission shaft are respectively connected to the transmission gear and the drive bevel gear, and the transmission shaft is slidably connected to the inner ring of the bearing via a flat key.

[0015] Preferably, the heat dissipation mechanism further includes two driven bevel gears, two ball screws, and two ball nuts; the two driven bevel gears are meshed and connected to both sides of the driving bevel gear, each driven bevel gear is fixed to one end of the ball screw, each ball screw is threaded with a ball nut, and each ball nut is fixedly installed on the bottom of the heat dissipation fins.

[0016] Preferably, a limiting disk is fixedly installed on the drive shaft, one side of the limiting disk is in contact with the memory metal sheet, the memory metal sheet is fixed to the bimetallic sheet, and both the memory metal sheet and the bimetallic sheet are fixedly installed on the bottom of the heat-conducting plate.

[0017] Preferably, the top of the fixing plate is fixedly connected to two springs, the other end of each spring is fixed to a heat dissipation fin, and each heat dissipation fin has two grooves, which are slidably connected to the limiting guide rail.

[0018] Preferably, each heat dissipation fin is fixed with two limiting blocks to restrict the degree of freedom of movement of the heat dissipation fin, and the four limiting guide rails are fixedly installed on the bottom of the heat conduction plate.

[0019] The advantages of this invention are:

[0020] 1. This invention achieves precise broadband power regulation through a structural design that combines a pneumatically driven transmission mechanism with a gradually changing microstrip impedance line. This solves the problems of slow response and susceptibility to interference in traditional electronic regulation, and improves the adaptability and transmission stability of UAV communication signals.

[0021] 2. This invention achieves dynamic matching between heat dissipation efficiency and power demand through a structural design that links power regulation with heat dissipation fins, solving the problem of device damage caused by mismatch between heat dissipation and power, and improving the reliability and service life of the device in complex flight environments;

[0022] 3. This invention achieves the functions of anti-vibration interference and action buffering through the combined structural design of rubber shock-absorbing pads, magnetic coupling reset and spring buffer, solves the problems of adjustment offset and structural impact caused by UAV vibration, and improves the operational stability and structural durability of the device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of a broadband power amplifier device for UAV communication according to the present invention.

[0025] Figure 2 This is a schematic cross-sectional view of the overall structure of a broadband power amplifier device for UAV communication according to the present invention.

[0026] Figure 3 This is a cross-sectional schematic diagram of the connector structure of a broadband power amplifier device for UAV communication according to the present invention;

[0027] Figure 4 This is a schematic diagram of the mounting plate structure of a broadband power amplifier device for UAV communication according to the present invention;

[0028] Figure 5 This is an exploded view of the conduction mechanism structure of a broadband power amplifier device for UAV communication according to the present invention.

[0029] Figure 6 This is a schematic diagram of the heat dissipation mechanism of a broadband power amplifier device for UAV communication according to the present invention.

[0030] Figure 7 This is a schematic diagram of the heat sink structure of a broadband power amplifier device for UAV communication according to the present invention.

[0031] Figure 8 This invention relates to a broadband power amplifier device for unmanned aerial vehicle (UAV) communication. Figure 7 Enlarged schematic diagram of the structure at point A in the middle

[0032] Figure 9 This is an exploded view of the main structure of a broadband power amplifier device for UAV communication according to the present invention.

[0033] In the diagram: 100, Main body; 110, Fixed chamber; 111, Heat-conducting plate; 112, Fixed plate; 113, Power amplifier unit; 114, Broadband impedance matching component; 200, Pressure chamber; 210, Connector; 211, Elastic metal diaphragm; 212, Separation plate; 213, Movable shaft; 214, Rubber damping pad; 220, Mounting plate; 221, First magnetic coupling plate; 222, Limiting rod; 223, Reset damper; 224, Second magnetic coupling plate; 225, Arc-shaped metal plate; 300, Conducting mechanism; 3 10. Connecting rod; 311. Slider; 312. Slide rail; 320. Fixing block; 321. Adjustment probe; 322. Gradient microstrip impedance line; 400. Heat dissipation mechanism; 410. Transmission gear; 411. Bearing; 412. Transmission shaft; 413. Driving bevel gear; 414. Driven bevel gear; 415. Ball screw; 416. Ball nut; 420. Limiting plate; 421. Memory metal sheet; 422. Bimetallic strip; 423. Spring; 430. Heat dissipation fins; 431. Limiting guide rail; 432. Limiting block. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-9 As shown, a broadband power amplifier device for UAV communication includes a main body 100, a pressure chamber 200, a conduction mechanism 300, and a heat dissipation mechanism 400; the pressure chamber 200 is installed at the bottom of the main body 100, and the conduction mechanism 300 and the heat dissipation mechanism 400 are installed in the inner cavity of the main body 100.

[0036] like Figure 9 As shown, the inner cavity of the fixing chamber 110 of the main body 100 provides a stable mounting base for each mechanism. The slots opened in the fixing chamber 110 reserve space for the expansion and contraction of the heat dissipation fins 430. The heat-conducting plate 111 in the inner cavity of the fixing chamber 110 fixes the power amplifier unit 113 and the broadband impedance matching component 114 through the mounting surface on the top. The heat-conducting plate 111 quickly conducts the heat generated by the power amplifier unit 113, such as... Figure 7 As shown, the limiting guide rail 431 is fixed at the bottom of the heat conduction plate 111. The limiting guide rail 431 provides sliding guidance for the heat dissipation fins 430 and cooperates with the limiting block 432 on the heat dissipation fins 430 to limit the maximum movement of the heat dissipation fins 430 and avoid structural collision. The fixing plate 112 is fixed to the side wall of the inner cavity of the fixing chamber 110 to ensure support for the internal components.

[0037] like Figure 3 As shown, the air chamber 200 is equipped with a connector 210. The top of the connector 210 is welded to a flexible metal diaphragm 211, forming a sealed cavity. The deformation characteristics of the flexible metal diaphragm 211 convert the air pressure difference into axial power. A separation plate 212 is fixed to the sealed cavity with an interference fit, dividing the sealed cavity into two independent chambers. A throttling orifice in the center of the separation plate 212 achieves air pressure balance between the two chambers. The orifice's diameter design satisfies airflow during normal air pressure changes and provides a triggering carrier for the arc-shaped metal plate 225 during sudden air pressure changes. A rubber damping pad 214 is bonded to the top of the flexible metal diaphragm 211. The top of the rubber damping pad 214 is connected to the movable shaft 213. This multi-layered connection structure securely transmits the deformation power of the flexible metal diaphragm 211. Simultaneously, the elastic characteristics of the rubber damping pad 214 absorb vibrations during UAV flight, preventing deviations in the transmission of the movable shaft 213. Figure 4 As shown, the mounting plate 220 is fixed to the bottom of the connector 210, providing mounting support for the first magnetic coupling piece 221. The limiting groove opened in the mounting plate 220 forms a sliding fit with the limiting rod 222 at one end of the first magnetic coupling piece 221, limiting the rotation angle of the first magnetic coupling piece 221 and ensuring its smooth rotation. The second magnetic coupling piece 224 is rotatably installed in the sealed cavity, with an arc-shaped metal piece 225 fixed on one side. The arc-shaped metal piece 225 is attached to the bottom side of the throttling hole of the separation plate 212. When the UAV ascends from a low altitude to a high altitude, the elastic metal diaphragm 211 in the upper chamber bulges, and the air pressure in the lower chamber is greater than that in the upper chamber, resulting in a pressure difference. At this time, the air pressure in the lower chamber will be released to the upper chamber through the throttling hole. During the release process, the airflow impact force drives the arc-shaped metal piece 225 to rotate. When the orifice is impacted, it drives the second magnetic coupling plate 224 to rotate. The magnetic coupling between the second magnetic coupling plate 224 and the first magnetic coupling plate 221 achieves contactless power transmission. The airflow impact force at the bottom of the throttling orifice is set as N. When the reset resistance of the reset damper 223 is greater than N, the reset damper 223 drives the first magnetic coupling plate 221. The first magnetic coupling plate 221 and the second magnetic coupling plate 224 cooperate to reset the arc-shaped metal plate 225. At the same time, the mounting plate 220 is equipped with a scale, and the second magnetic coupling plate 224 is equipped with a pointer. Personnel can check the pointer at low altitudes to detect whether the arc-shaped metal plate 225 is at the designated position. This allows the reset damper 223 to buffer the impact of sudden air pressure changes on the elastic metal diaphragm 211 without affecting the power transmission efficiency during normal air pressure regulation.

[0038] like Figure 5 and Figure 6As shown, the toothed grooves on the surface of the movable shaft 213 mesh with the transmission gear 410 of the heat dissipation mechanism 400, and can also be hinged to the connecting rod 310 through the outer surface of the movable shaft 213. When the movable shaft 213 moves axially in the first direction, the first direction is... Figure 3 The direction indicated by the middle arrow drives the transmission gear 410 to rotate synchronously, and the movable shaft 213 is hinged to one end of the connecting rod 310, as shown in the image. Figure 5 As shown, the end face of the connecting rod 310 moves synchronously along the first direction. The other end of the connecting rod 310 is hinged to one of the two sliders 311 to adapt to the angular deviation during the transmission process. The slider 311 is driven to slide smoothly along the slide rail 312. The two sliders 311 are fixed by the connecting block to achieve synchronous movement. At the same time, the guide function of the slide rail 312 prevents the movement from deviating. The top of the other slider 311 is fixed by the fixing block 320. An adjustment probe 321 is fixedly installed on the top of the fixing block 320. The two sides of the adjustment probe 321 are in contact with the surface of the gradient microstrip impedance line 322. Under the drive of the fixing block 320, it slides smoothly along the gradient microstrip impedance line 322. The impedance value of the gradient microstrip impedance line 322 changes gradually, corresponding to low, medium and high power matching states. The movable shaft 213 drives the two sliders 311 to move synchronously along the first direction. The adjustment probe 321 changes the impedance matching parameters to achieve broadband power adjustment. At the same time, the action of the heat dissipation mechanism 400 is kept precisely synchronized to ensure the matching of power and heat dissipation.

[0039] In summary, high altitude and low air pressure lead to impedance mismatch, increased signal power loss, and when the UAV ascends to high altitude, the air dielectric constant decreases, causing an imbalance between the broadband impedance matching component 114 and the load impedance, increasing signal reflection loss, reducing the output efficiency of the power amplifier unit 113, and shortening the communication distance. By sensing air pressure changes through the pressure chamber 200, the adjustment probe 321 of the transmission mechanism 300 slides along the gradually changing microstrip impedance line 322, adaptively adjusting the impedance matching parameters to compensate for the dielectric constant shift caused by air pressure changes. Figure 3 As shown, when the drone ascends and causes a decrease in ambient air pressure, the elastic metal diaphragm 211 inside the pressure chamber 200 undergoes axial deformation due to the pressure difference between the inside and outside of the sealed cavity. This deformation, via the rubber damping pad 214, causes the movable shaft 213 to extend upwards along the first direction. Figure 5As shown, the movable shaft 213 is hinged to the end face of the connecting rod 310, synchronously pushing the end face of the connecting rod 310 to move along the first direction. The connecting rod 310 is hinged to the slider 311 of the transmission mechanism 300, causing the slider 311 to slide along the slide rail 312. Through the linkage of the connecting block, another slider 311 and the top fixed block 320 move synchronously. The adjustment probe 321 on the fixed block 320 moves with the fixed block 320 and slides along the gradient microstrip impedance line 322 to the high impedance region, increasing the impedance value of the matching network and offsetting the impedance shift caused by low air pressure. When the UAV descends to a low altitude, the elastic metal diaphragm 211 resets, the movable shaft 213 retracts, and the adjustment probe 321 returns to the low impedance region, restoring the high power matching state.

[0040] like Figure 6 As shown, in the heat dissipation mechanism 400, the transmission gear 410 is fixedly connected to one end of the transmission shaft 412. The inner ring of the bearing 411 supports the transmission shaft 412 and simultaneously slides with the transmission shaft 412 via a flat key, allowing the transmission shaft 412 to slide on the bearing 411 while rotating. The outer ring of the bearing 411 is fixed to the fixing plate 112 to ensure stable installation and reduce frictional losses during transmission. The other end of the transmission shaft 412 is connected to the driving bevel gear 413, which rotates synchronously with the transmission shaft 412 and meshes with the driven bevel gears 414 on both sides, converting the horizontal rotational motion into vertical rotational motion. The symmetrically arranged driven bevel gears 414 achieve synchronous movement of the heat dissipation fins 430 on both sides. The end face of each driven bevel gear 414 is fixed to one end of the ball screw 415, which rotates synchronously with the driven bevel gear 414. The threaded engagement with the ball nut 416 converts the rotational motion into the linear motion of the ball nut 416. Figure 8 As shown, the ball nut 416 is fixed to the bottom of the heat dissipation fin 430, so that the ball nut 416 pushes the heat dissipation fin 430 to unfold or retract along the limiting guide rail 431. During the sliding process, the groove opened on the heat dissipation fin 430 slides with the limiting guide rail 431 to ensure the direction of movement of the heat dissipation fin 430. The gap between the two heat dissipation fins 430 can ensure the heat dissipation area when unfolded, and at the same time reduce the space occupation when retracted. With the reset action of the spring 423, it can achieve synchronous matching of heat dissipation area and power, and ensure the smoothness of the mechanism operation.

[0041] As described above, the existing technology has the problem of asynchronous power regulation and heat dissipation, redundant heat dissipation at low power and insufficient heat dissipation at high power. The existing device operates independently for power regulation and heat dissipation. When the power output is low, the heat dissipation fins 430 have an excessively large unfolded area, which increases flight drag. When the power output is high, the heat dissipation area is insufficient, which leads to overheating and derating of the power amplifier unit 113.

[0042] like Figure 6As shown, when the movable shaft 213 moves along the first direction, its surface toothed grooves drive the transmission gear 410 to rotate. The transmission gear 410 drives the transmission shaft 412 to rotate within the inner ring of the bearing 411. The driving bevel gear 413 at the other end of the transmission shaft 412 rotates synchronously and meshes with the driven bevel gears 414 on both sides, converting the horizontal rotational motion into vertical rotational motion. The driven bevel gears 414 are fixedly connected to the ball screw 415, driving the ball screw 415 to rotate. The ball nut 416 moves linearly along the ball screw 415, as shown. Figure 7 and Figure 8 As shown, the ball nut 416 is fixed to the bottom of the heat sink 430, pushing the heat sink 430 to unfold along the limiting guide rail 431: when the power drops to the rated value (high altitude), the fins are fully unfolded, and the heat dissipation area reaches the maximum; when the power is at full power value (low altitude), the fins shrink to the minimum to reduce flight resistance, and the heat conduction plate 111 quickly conducts the heat of the power amplification unit 113 to the heat sink 430.

[0043] like Figure 6 As shown, a limiting disk 420 is fixed in the middle of the drive shaft 412. One side of the limiting disk 420 is in contact with the surface of the memory metal sheet 421. When the temperature does not change, it is limited by the memory metal sheet 421. The memory metal sheet 421 and the bimetallic strip 422 are fixed by adhesive bonding, and both are installed at the bottom of the heat-conducting plate 111 to sense the temperature transmitted by the power amplifier unit 113. When the temperature is too high, the bending deformation of the bimetallic strip 422 and the recovery of the shape of the memory metal sheet 421 cause a change in the position of the limiting point of the limiting disk 420 when it is bent. At this time, the limiting disk 420 will drive the drive shaft 412 to move to one side, causing the meshing between the driving bevel gear 413 and the driven bevel gear 414 to be interrupted. Figure 8 As shown, when the driven bevel gear 414 cannot be limited by the movable shaft 213 after the meshing is interrupted, the spring 423 works. One end of the spring 423 is fixed to the fixed plate 112, and the other end is fixed to the heat sink fin 430. It is preloaded and stretched, and uses its own compression to drive the heat sink fin 430 to unfold outward, thereby improving the heat dissipation efficiency and forming over-temperature protection to prevent the power amplifier unit 113 from being damaged due to overheating.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A broadband power amplifier device for unmanned aerial vehicle (UAV) communication, characterized in that, Including: The main body (100), which is installed on the body of the UAV, includes a fixed compartment (110), a heat-conducting plate (111) is fixedly installed in the inner cavity of the fixed compartment (110), the fixed compartment (110) has at least two slots, the main body (100) also includes a fixing plate (112), the fixing plate (112) is fixed in the inner cavity of the fixed compartment (110), a power amplifier unit (113) and a broadband impedance matching component (114) are fixedly installed on the top of the heat-conducting plate (111), the input end of the power amplifier unit (113) is used to receive the radio frequency input signal of the UAV communication system, and its output end is electrically connected to the input end of the broadband impedance matching component (114); A pressure chamber (200) has a movable shaft (213), the direction of which the movable shaft (213) is set as a first direction, the movable shaft (213) can be driven by atmospheric pressure to move axially along the first direction, and the movable shaft (213) has a plurality of toothed grooves. A transmission mechanism (300) is mounted on a fixed chamber (110). The transmission mechanism (300) includes an adjustment probe (321). The two sides of the adjustment probe (321) are slidably connected to a gradient microstrip impedance line (322). The gradient microstrip impedance line (322) is used to perform broadband impedance matching on the amplified signal output by the power amplifier unit (113). The air pressure chamber (200) can provide power to the transmission mechanism (300) through a movable shaft (213), so that the adjustment probe (321) slides on the gradient microstrip impedance line (322) to form broadband power adjustment for communication.

2. The broadband power amplifier device for UAV communication according to claim 1, characterized in that: The conduction mechanism (300) includes a connecting rod (310), and a heat dissipation mechanism (400) is installed inside the main body (100), which has at least two heat dissipation fins (430). The heat dissipation fins (430) are located directly below the heat conduction plate (111) to absorb the heat dissipated from the heat conduction plate (111). When the movable shaft (213) moves along the first direction, the heat dissipation fins (430) can be expanded or contracted along the groove opened in the fixed chamber (110). The heat dissipation mechanism (400) includes a transmission gear (410), which meshes with a plurality of tooth grooves on the movable shaft (213). One side of the outer surface of the movable shaft (213) is hinged to the connecting rod (310), so that when the movable shaft (213) moves along the first direction, the transmission gear (410) rotates as it meshes with the tooth grooves, and the end face of the connecting rod (310) moves synchronously along the first direction.

3. The broadband power amplifier device for UAV communication according to claim 1, characterized in that: The air pressure chamber (200) includes a connector (210), an elastic metal diaphragm (211), a separation plate (212), and a rubber shock-absorbing pad (214). The elastic metal diaphragm (211) is fixed to the top of the connector (210), so that the connector (210) has a sealed cavity. The separation plate (212) has a throttling hole. The separation plate (212) is fixed in the sealed cavity formed by the connector (210) and the elastic metal diaphragm (211), so that the sealed cavity is divided into two chambers. The top of the elastic metal diaphragm (211) is fixedly connected to the movable shaft (213) through the rubber shock-absorbing pad (214).

4. A broadband power amplifier device for UAV communication according to claim 3, characterized in that: The air chamber (200) further includes a mounting plate (220), a first magnetic coupling plate (221), a limiting rod (222), a reset damper (223), a second magnetic coupling plate (224), and an arc-shaped metal plate (225). The mounting plate (220) is fixedly installed on the bottom of the connector (210). The mounting plate (220) is rotatably connected to the first magnetic coupling plate (221) through the reset damper (223). The mounting plate (220) has a limiting groove, and the limiting groove is slidably connected to the limiting rod (222). The limiting rod (222) is fixed to one end of the first magnetic coupling plate (221). The mounting plate (220) limits the degree of freedom of movement of the first magnetic coupling piece (221) by the limiting groove. The second magnetic coupling piece (224) is rotatably mounted in the sealed cavity formed by the connector (210) and the elastic metal diaphragm (211). The arc-shaped metal piece (225) is located on the bottom side of the throttling hole opened in the separation plate (212) and is fixed with the second magnetic coupling piece (224). The second magnetic coupling piece (224) and the first magnetic coupling piece (221) are magnetically coupled to each other, so that the arc-shaped metal piece (225) can be reset with the cooperation of the reset damper (223) and the first magnetic coupling piece (221).

5. A broadband power amplifier device for UAV communication according to claim 1, characterized in that: The transmission mechanism (300) also includes two sliders (311), a slide rail (312), and a fixing block (320); the bottom of one of the sliders (311) is hinged to one end of the connecting rod (310), and the slider (311) and the other slider (311) are fixed together by a connecting block and are slidably connected to the slide rail (312), and the top of the other slider (311) is fixed to the fixing block (320), and an adjustment probe (321) is fixedly installed on the fixing block (320).

6. A broadband power amplifier device for UAV communication according to claim 2, characterized in that: The heat dissipation mechanism (400) also includes a transmission gear (410), a bearing (411), a transmission shaft (412), and a drive bevel gear (413); the two ends of the transmission shaft (412) are respectively connected to the transmission gear (410) and the drive bevel gear (413), and the transmission shaft (412) is slidably connected to the inner ring of the bearing (411) by a flat key.

7. A broadband power amplifier device for UAV communication according to claim 6, characterized in that: The heat dissipation mechanism (400) also includes two driven bevel gears (414), two ball screws (415), and two ball nuts (416); the two driven bevel gears (414) are meshed and connected to both sides of the driving bevel gear (413), each driven bevel gear (414) is fixed to one end of the ball screw (415), each ball screw (415) is threaded with a ball nut (416), and each ball nut (416) is fixedly installed on the bottom of the heat dissipation fins (430).

8. A broadband power amplifier device for UAV communication according to claim 7, characterized in that: A limiting disk (420) is fixedly installed on the drive shaft (412). One side of the limiting disk (420) is in contact with a memory metal sheet (421). The memory metal sheet (421) is fixed to a bimetallic sheet (422), and both the memory metal sheet (421) and the bimetallic sheet (422) are fixedly installed on the bottom of the heat-conducting plate (111).

9. A broadband power amplifier device for UAV communication according to claim 1, characterized in that: The top of the fixed plate (112) is fixedly connected to two springs (423), and the other end of each spring (423) is fixed to the heat dissipation fin (430). Each heat dissipation fin (430) has two slots, and they are slidably connected to the limiting guide rail (431) through the slots.

10. A broadband power amplifier device for UAV communication according to claim 9, characterized in that: Each of the heat dissipation fins (430) is fixed with two limiting blocks (432) to restrict the degree of freedom of movement of the heat dissipation fins (430), and four limiting guide rails (431) are fixedly installed on the bottom of the heat conduction plate (111).

Images