L-band wideband signal gain module

Abstract

The application relates to the technical field of signal gain modules, and discloses an L-band wideband signal gain module, which comprises a shell, a shell cover and a circuit board, the bottom of the shell cover is provided with a separation rib for separating the inner cavity of the shell, the circuit board is provided with a grounding copper foil, the grounding copper foil is directly below the separation rib, the bottom of the separation rib is provided with a plurality of through holes, and a probe assembly is arranged in each of the through holes. The convex points on the separation rib are replaced by the probe assemblies, the contact pressure of the movable probe and the grounding copper foil is converted into the brightness of LED lamp beads, the contact state of the movable probe and the grounding copper foil can be quickly detected by maintenance personnel, when the movable probe is in poor contact, the regulating structure is started, the screw is rotated, the movable probe is moved towards the grounding copper foil, the movable probe is restored to contact, the detection process and the adjusting process are simple and fast, the cover does not need to be disassembled and replaced, power supply does not need to be cut off, the work of the equipment is not affected, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of signal gain module technology, specifically to an L-band broadband signal gain module. Background Technology

[0002] The L-band broadband signal gain module is a core component designed for the L-band (1-2GHz) frequency range, capable of effectively amplifying weak signals. Its housing design often employs a cavity-shading method, where isolation ribs divide the housing into multiple non-interfering sub-cavities. Uniformly distributed bumps are milled at the bottom of the isolation ribs, which are in close contact with the grounding copper foil on the PCB. This structure primarily establishes numerous parallel low-inductance, low-resistance connection points between the PCB ground layer and the shielding housing, efficiently dissipating electromagnetic interference energy to the ground plane. Secondly, the inherent assembly gap between the isolation ribs and the PCB can easily form a "slot antenna" for electromagnetic waves, leading to high-frequency signal leakage and rendering the cavity isolation completely ineffective. Multiple bumps transform this gap into multiple extremely short, ineffective antennas, physically "blocking" the electromagnetic leakage path.

[0003] However, in practical applications, the contact between the bump and the grounding copper foil often causes problems, affecting normal function. On the one hand, the bump gradually detaches from the grounding copper foil due to factors such as stress relaxation, vibration and impact, and process errors, resulting in discontinuous gaps in the shielding cavity, causing serious electromagnetic leakage and resonance, making the cavity shielding completely ineffective, and also cutting off the DC and RF grounding paths. At this time, the interference current cannot be effectively guided and can only be randomly reflected and coupled in the cavity, forming a complex interference field. Existing technologies lack a rapid detection method for this problem source, and can only infer the cause from the malfunction, which requires the use of external instruments such as multimeters and spectrum analyzers. The process is relatively complicated and requires a high level of expertise. The detection often requires opening the shell and powering off, interfering with the normal operation of the module. In addition, even if the problematic bump is detected, since the bump is milled at the bottom of the isolation rib, the problem can only be solved by replacing the entire shell, resulting in the shell being scrapped, wasting resources, and incurring high maintenance costs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an L-band broadband signal gain module, which has the advantages of convenient online maintenance of signal gain modules and low operation and maintenance costs. It solves the problem that existing signal gain modules are difficult to quickly detect the separation of the isolation rib protrusion from the grounding copper foil when normal operation is affected, and that even if the problem is detected, it can only be solved by replacing the cover.

[0005] To solve the above technical problems, the present invention provides the following technical solution: an L-band broadband signal gain module, comprising a housing, a cover, and a circuit board. The bottom of the cover is provided with an isolation rib for separating the inner cavity of the housing. A grounding copper foil is provided on the circuit board, and the grounding copper foil is located directly below the isolation rib. The bottom of the isolation rib is provided with multiple through holes, and a probe assembly is installed in each of the multiple through holes. The probe assembly includes a column, a movable probe installed at the bottom of the column, and a detection structure and a control structure installed in the column. The movable probe is electrically connected to the isolation rib and the cover, and the bottom end of the movable probe extends toward the grounding copper foil. The detection structure includes a varistor and an LED bead. When the detection structure is in operation, the varistor detects the change in contact pressure between the movable probe and the grounded copper foil, which in turn changes the brightness of the LED bead. The control structure includes a screw mounted on the top of the column, which, when rotated, causes the movable probe to move toward the grounded copper foil.

[0006] Preferably, a slot is provided at the bottom of the column, and the end of the movable probe away from the grounded copper foil is inserted into the slot. A feedback spring is fixed at one end of the movable probe inside the slot, and the end of the feedback spring away from the movable probe is fixed to a varistor.

[0007] Preferably, the LED beads are fixed on the top surface of the column, and the detection structure also includes a switch and a battery. The battery is disposed in the slot and fixed with the varistor. The switch is fixed on the top surface of the column, and the battery, switch, varistor and LED beads are connected in series by wires.

[0008] Preferably, the inner wall of the slot is further provided with a square hole, the screw is rotatably connected to the top of the column, one end of the screw extends into the square hole, the adjustment structure also includes a square nut tube located in the square hole, the square nut tube is sleeved on the screw and threadedly connected to the screw, the square nut tube is clearance-fitted with the square hole, and one end of the square nut tube is fixed to the battery.

[0009] Preferably, the movable probe is made of beryllium copper, and the edge of the movable probe near the grounding copper foil is rounded. A strip-shaped friction block is installed at the center of the movable probe near the grounding copper foil. A driving component is also provided on the isolation rib. When the driving component is running, it forces the strip-shaped friction blocks at the bottom of all the movable probes to rotate, thereby scraping off the oxide film on the contact surface between the grounding copper foil and the movable probe.

[0010] Preferably, the isolation rib has a cavity inside, the cavity is connected to multiple through holes, the column is rotatably connected to the through holes, and gears are provided on the outer wall of the column at the part corresponding to the cavity.

[0011] Preferably, the drive assembly includes a rack located in a cavity, the rack being slidably connected to the inner wall of the cavity, and the rack having a plurality of spaced-apart tooth sets that mesh with gears.

[0012] Preferably, the drive assembly further includes a crankshaft and a connecting rod. The crankshaft is rotatably connected to the inner wall of the cavity. One end of the connecting rod is sleeved on the crankshaft and movably connected to the crankshaft. The other end of the connecting rod is hinged to the end of the rack. One end of the crankshaft extends to the top of the housing and is fixed with a nut.

[0013] Preferably, a push spring is fixed to the end of the rack away from the connecting rod, and one end of the push spring is fixed to the inner wall of the cavity.

[0014] Preferably, the bottom end of the movable probe is provided with a strip groove, the strip friction block is inserted into the strip groove, and a return spring is fixed at one end of the strip friction block inside the strip groove, and one end of the return spring is fixed to the inner wall of the strip groove.

[0015] Compared with the prior art, the present invention provides an L-band broadband signal gain module, which has the following advantages: 1. This type of L-band broadband signal gain module replaces the protrusions on the isolation rib with probe components, using movable probes to connect with the grounding copper foil. The movable probes maintain electrical conductivity with the isolation ribs and the housing cover, without affecting the original shielding function. The contact pressure between the movable probes and the grounding copper foil is converted into the brightness of LED beads, which helps maintenance personnel quickly detect the contact status between the movable probes and the grounding copper foil. When the movable probes have poor contact, the control structure is activated, and turning the screw moves the movable probes toward the grounding copper foil to restore contact. The detection and adjustment processes are simple and quick, without the need to remove or replace the cover, without power interruption, and without affecting the operation of the equipment, thus reducing maintenance costs.

[0016] 2. This type of L-band broadband signal gain module, by setting up a driving component, allows maintenance personnel to periodically start the driving component, which enables multiple movable probes to reciprocate simultaneously. The friction between the strip-shaped friction block at the bottom of the movable probe and the grounding copper foil breaks down the oxide layer, thereby reducing the adverse effects of the oxide layer on the contact surface and helping to ensure the RF grounding effect.

[0017] 3. This type of L-band broadband signal gain module, by setting a push spring, when the drive component is finished, the elastic force of the push spring causes the rack to return to its original position. At this time, the rack remains in a stable state and engages with the gear to lock the column, preventing the column from moving freely and facilitating the rotation of the screws on the column.

[0018] 4. This type of L-band broadband signal gain module, by setting a reset spring, compresses the reset spring when the movable probe is in contact with the grounding copper foil. The pressure of the reset spring causes the strip friction block to press tightly against the contact surface. When the strip friction block rotates and rubs the grounding copper foil, the scraping effect is better, which improves the destructive effect on the oxide layer. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the housing of the present invention; Figure 2 This is a cross-sectional view of the isolation rib of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of part A; Figure 4 This is a three-dimensional structural diagram of the housing of the present invention; Figure 5 Structural explosion of the probe assembly of the present invention Figure 1 ; Figure 6 Structural explosion of the probe assembly of the present invention Figure 2 ; Figure 7 This is a schematic diagram of the structure of the driving component of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of part B.

[0020] In the diagram: 100, housing; 200, housing cover; 300, circuit board; 400, isolation rib; 410, through hole; 420, cavity; 500, grounding copper foil; 600, probe assembly; 610, column; 611, slot; 612, feedback spring; 613, square hole; 614, gear; 620, movable probe; 621, strip friction block; 622, strip groove; 623, reset spring; 630, detection structure; 631, varistor; 632, LED bead; 633, switch; 634, battery; 640, control structure; 641, screw; 642, square nut tube; 700, drive assembly; 710, rack; 720, crankshaft; 730, connecting rod; 740, nut; 750, push spring. Detailed Implementation

[0021] 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.

[0022] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes an L-band broadband signal gain module.

[0023] Example 1: Please refer to Figures 1-6 An L-band broadband signal gain module includes a housing 100, a cover 200, and a circuit board 300. The bottom of the cover 200 is provided with an isolation rib 400 for separating the inner cavity of the housing 100. A grounding copper foil 500 is provided on the circuit board 300, and the grounding copper foil 500 is located directly below the isolation rib 400. The bottom of the isolation rib 400 is provided with multiple through holes 410, and a probe assembly 600 is installed in each of the multiple through holes 410. The probe assembly 600 includes a column 610, a movable probe 620 installed at the bottom of the column 610, and a detection structure 630 and a control structure 640 installed in the column 610. The movable probe 620 is electrically connected to the isolation rib 400 and the cover 200, and the bottom end of the movable probe 620 extends toward the grounding copper foil 500. The detection structure 630 includes a varistor 631 and an LED bead 632. When the detection structure 630 is in operation, the varistor 631 detects the change in contact pressure between the movable probe 620 and the grounded copper foil 500, and causes the brightness of the LED bead 632 to change. The control structure 640 includes a screw 641 mounted on the top of the column 610. When the screw 641 is rotated, the movable probe 620 moves toward the grounded copper foil 500.

[0024] In the normal installation state of the cover 200, the bottom ends of multiple movable probes 620 are in close contact with the grounding copper foil 500. The spacing between adjacent movable probes 620 is set to be less than 1 / 20 of the wavelength within the PCB corresponding to the highest operating frequency of 2GHz in the L-band, to avoid gap resonance and electromagnetic leakage in the L-band frequency band caused by contact gaps. The movable probes 620, the isolation ribs 400, and the cover 200 maintain low impedance electrical conduction to ensure the shielding effect.

[0025] When in use, when the movable probe 620 is in close contact with the grounding copper foil 500, the pressure of the grounding copper foil 500 on the movable probe 620 is fed back to the varistor 631, making the resistance of the varistor 631 smaller after being compressed. The LED bead 632 connected in series with it has a higher brightness. Using this as a reference, when the signal gain module is working, if the maintenance personnel observe that the brightness of the LED bead 632 corresponding to a certain probe component 600 is significantly reduced, it indicates that the movable probe 620 at this point may have detached from the grounding copper foil 500 on the circuit board 300. Then, the control structure 640 is activated, and the screw 641 is turned to move the movable probe 620 toward the grounding copper foil 500. When the brightness of the LED bead 632 returns to the reference brightness, the adjustment is stopped. In this way, maintenance work can be completed without opening the cover 200 or using external instruments.

[0026] By replacing the protrusions on the isolation rib 400 with probe assembly 600, the movable probe 620 is used to connect with the grounding copper foil 500. The movable probe 620 maintains electrical conductivity with the isolation rib 400 and the cover 200, without affecting the original shielding function. Then, by converting the contact pressure between the movable probe 620 and the grounding copper foil 500 into the brightness of the LED bead 632, maintenance personnel can quickly detect the contact status between the movable probe 620 and the grounding copper foil 500. When the movable probe 620 has poor contact, the control structure 640 is activated, and the screw 641 is turned to move the movable probe 620 toward the grounding copper foil 500 to restore contact. The detection and adjustment processes are simple and quick, without the need to remove or replace the cover, without power interruption, and without affecting the operation of the equipment, thus reducing maintenance costs.

[0027] For further details, please refer to [link / reference]. Figures 3-6 Unlike the above embodiments, the bottom of the column 610 is provided with a slot 611. The end of the movable probe 620 away from the grounded copper foil 500 is inserted into the slot 611. A feedback spring 612 is fixed to one end of the movable probe 620 inside the slot 611. The end of the feedback spring 612 away from the movable probe 620 is fixed to the varistor 631. The LED bead 632 is fixed to the top surface of the column 610. The detection structure 630 also includes a switch 633 and a battery 634. The battery 634 is disposed in the slot 611 and fixed to the varistor 631. The switch 633 is fixed to the top surface of the column 610. The battery 634, switch 633, varistor 631 and LED bead 632 are connected in series by wires.

[0028] When the active probe 620 is in close contact with the grounded copper foil 500, the feedback spring 612 is in a compressed state. The elastic force of the feedback spring 612 acts on the varistor 631, causing the resistance of the varistor 631 to change. The switch 633 is in the default closed state, which disconnects the circuit and turns off the LED bead 632. In use, the battery 634 is set as a button type and installed in the slot 611 through the battery holder. First, turn on the switch 633 to realize the circuit connection, and the LED bead 632 lights up. Then, compare the difference between the brightness of the bead and the standard value. When the brightness is lower than the standard value, the LED bead 632 is in a bad or extremely dim state, indicating that the varistor 631 has not been subjected to pressure, which in turn indicates that the active probe 620 is separated from the ground copper foil 500. By setting a switch 633 and an LED bead 632 on the top of the column 610, the switch 633 can be pressed directly on the cover 200 and the brightness of the LED bead 632 can be observed, making the testing operation simpler. The battery 634 can provide for multiple maintenance operations, covering the service life of the equipment.

[0029] For further details, please refer to [link / reference]. Figures 3-6 Unlike the above embodiments, the inner wall of the slot 611 is also provided with a square hole 613. The screw 641 is rotatably connected to the top of the column 610. One end of the screw 641 extends into the square hole 613. The adjustment structure 640 also includes a square nut tube 642 located in the square hole 613. The square nut tube 642 is sleeved on the screw 641 and threadedly connected to the screw 641. The square nut tube 642 is clearance-fitted with the square hole 613. One end of the square nut tube 642 is fixed to the battery 634.

[0030] The square nut tube 642 has an internal thread on its inner wall that matches the screw 641. In use, when the screw 641 is turned, the screw 641 drives the square nut tube 642 to move along the square hole 613. When the square nut tube 642 moves, it drives the battery 634, the varistor 631, the feedback spring 612, and the movable probe 620 to move toward the grounded copper foil 500. When the movable probe 620 contacts the grounded copper foil 500, it stops moving. The feedback spring 612 is then gradually compressed, and the elastic force is applied to the varistor 631. The resistance of the varistor 631 changes accordingly, and the brightness of the LED bead 632 also changes accordingly until the brightness of the LED bead 632 returns to the standard state, thus completing the adjustment.

[0031] The movable probe 620 is adjusted by rotating the screw 641. The operation is simple and can quickly restore the movable probe 620 to contact with the grounded copper foil 500, ensuring the normal shielding effect of this part.

[0032] For further details, please refer to [link / reference]. Figures 5-8Unlike the above embodiments, the movable probe 620 is made of beryllium copper. The edge of the movable probe 620 near the grounding copper foil 500 has rounded corners. A strip-shaped friction block 621 is installed at the center of the movable probe 620 near the grounding copper foil 500. A driving assembly 700 is also provided on the isolation rib 400. When the driving assembly 700 operates, it forces the strip-shaped friction blocks 621 at the bottom of all movable probes 620 to rotate, thereby scraping off the oxide film on the contact surface between the grounding copper foil 500 and the movable probe 620. A cavity 420 is provided inside the isolation rib 400, and the cavity 420 communicates with multiple through holes 410. The column 610 is rotatably connected to the through holes 410. A gear 614 is provided on the outer wall of 610 corresponding to the cavity 420. The drive assembly 700 includes a rack 710 located in the cavity 420. The rack 710 is slidably connected to the inner wall of the cavity 420. The rack 710 is provided with multiple spaced tooth groups, which mesh with the gear 614. The drive assembly 700 also includes a crankshaft 720 and a connecting rod 730. The crankshaft 720 is rotatably connected to the inner wall of the cavity 420. One end of the connecting rod 730 is sleeved on the crankshaft 720 and movably connected to the crankshaft 720. The other end of the connecting rod 730 is hinged to the end of the rack 710. One end of the crankshaft 720 extends to the top of the cover 200 and is fixed with a nut 740.

[0033] The column 610 is cylindrical, the bottom of the movable probe 620 contacts the grounding copper foil 500 with a circular surface, the length of the end face of the strip friction block 621 is the same as the diameter of the circular surface, the main body of the strip friction block 621 is made of beryllium copper, and the end face of the strip friction block 621 is plated with hard chrome to improve wear resistance. In actual application, the contact area between the movable probe 620 and the grounding copper foil 500 will gradually oxidize, and the oxide layer will form a high-resistance layer on the contact surface. This will cause the grounding impedance to rise sharply, completely destroying the RF grounding effect. In addition, the resistance effect of the oxide layer will cause the contact to heat up, and the heat will in turn accelerate the oxidation, forming a vicious cycle, which may eventually lead to the contact burning or complete failure. During use, maintenance personnel periodically start the drive assembly 700. During operation, turning the nut 740 drives the crankshaft 720 to rotate. When the crankshaft 720 rotates, it drives one end of the support rod to reciprocate. The other end of the support rod pushes the rack 710 to reciprocate. When the rack 710 reciprocates, it drives the gear 614 and the column 610 to reciprocate. When the column 610 rotates, it drives the movable probe 620 at the bottom to rotate. When the movable probe 620 rotates, it drives the strip friction block 621 to rotate. When the strip friction block 621 rotates, it rubs against the grounded copper foil 500, destroying the oxide layer and thus reducing the negative impact of the oxide layer. By setting up the drive component 700, maintenance personnel can periodically start the drive component 700 to make multiple movable probes 620 rotate back and forth simultaneously. The friction between the strip-shaped friction block 621 at the bottom of the movable probe 620 and the grounding copper foil 500 is used to break the oxide layer, thereby reducing the adverse effects of the oxide layer on the contact surface and helping to ensure the RF grounding effect.

[0034] For further details, please refer to [link / reference]. Figure 2 and Figure 8 Unlike the above embodiments, the rack 710 has a push spring 750 fixed at the end away from the connecting rod 730, and one end of the push spring 750 is fixed to the inner wall of the cavity 420.

[0035] When the drive assembly 700 is started, the rack 710 reciprocates, thereby intermittently compressing the push spring 750. When the operation stops, the elastic force of the push spring 750 causes the rack 710 to return to its original position. At this time, the rack 710 remains in a stable state and engages with the gear 614 to lock the column 610, preventing the column 610 from moving freely and facilitating the rotation of the screw 641 on the column 610.

[0036] For further details, please refer to [link / reference]. Figure 2 and Figure 6 Unlike the above embodiments, the bottom end of the movable probe 620 is provided with a strip groove 622, the strip friction block 621 is inserted into the strip groove 622, and a return spring 623 is fixed at one end of the strip friction block 621 inside the strip groove 622. One end of the return spring 623 is fixed to the inner wall of the strip groove 622.

[0037] In practical applications, the spring force of the reset spring 623 is much smaller than that of the feedback spring 612. When the movable probe 620 is in contact with the grounded copper foil 500, the reset spring 623 is compressed. The pressure of the reset spring 623 causes the strip friction block 621 to press tightly against the contact surface. When the strip friction block 621 rotates and rubs the grounded copper foil 500, the scraping effect is better, which improves the destructive effect on the oxide layer.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An L-band broadband signal gain module, comprising a housing (100), a cover (200), and a circuit board (300), characterized in that: The bottom of the cover (200) is provided with an isolation rib (400) for separating the inner cavity of the housing (100). The circuit board (300) is provided with a grounding copper foil (500). The grounding copper foil (500) is located directly below the isolation rib (400). The bottom of the isolation rib (400) is provided with multiple through holes (410). Each of the multiple through holes (410) is equipped with a probe assembly (600). The probe assembly (600) includes a column (610), a movable probe (620) installed at the bottom of the column (610), and a detection structure (630) and a control structure (640) installed in the column (610). The movable probe (620) is electrically connected to the isolation rib (400) and the cover (200). The bottom of the movable probe (620) extends toward the grounding copper foil (500). The detection structure (630) includes a varistor (631) and an LED bead (632). When the detection structure (630) is in operation, the varistor (631) detects the change in contact pressure between the active probe (620) and the grounded copper foil (500), and causes the brightness of the LED bead (632) to change. The control structure (640) includes a screw (641) mounted on the top of the column (610), which, when rotated, causes the movable probe (620) to move toward the grounded copper foil (500); The bottom of the column (610) is provided with a slot (611). The end of the movable probe (620) away from the grounded copper foil (500) is inserted into the slot (611). The end of the movable probe (620) located inside the slot (611) is fixed with a feedback spring (612). The end of the feedback spring (612) away from the movable probe (620) is fixed with a varistor (631). The inner wall of the slot (611) is also provided with a square hole (613). The screw (641) is rotatably connected to the top of the column (610). One end of the screw (641) extends into the square hole (613). The adjustment structure (640) also includes a square nut tube (642) located in the square hole (613). The square nut tube (642) is sleeved on the screw (641) and threadedly connected to the screw (641). The square nut tube (642) is clearance-fitted with the square hole (613).

2. The L-band broadband signal gain module according to claim 1, characterized in that: The LED bead (632) is fixed on the top surface of the column (610). The detection structure (630) also includes a switch (633) and a battery (634). One end of the square nut tube (642) is fixed to the battery (634). The battery (634) is set in the slot (611) and fixed to the varistor (631). The switch (633) is fixed on the top surface of the column (610). The battery (634), switch (633), varistor (631) and LED bead (632) are connected in series by wires.

3. The L-band broadband signal gain module according to claim 1, characterized in that: The movable probe (620) is made of beryllium copper. The edge of the movable probe (620) near the ground copper foil (500) is rounded. A strip friction block (621) is installed at the center of the movable probe (620) near the ground copper foil (500). A driving component (700) is also provided on the isolation rib (400). When the driving component (700) is running, it forces the strip friction blocks (621) at the bottom of all movable probes (620) to rotate, thereby scraping off the oxide film on the contact surface between the ground copper foil (500) and the movable probe (620).

4. The L-band broadband signal gain module according to claim 3, characterized in that: The isolation rib (400) has a cavity (420) inside, the cavity (420) is connected to multiple through holes (410), the column (610) is rotatably connected to the through holes (410), and gears (614) are provided on the outer wall of the column (610) at the part corresponding to the cavity (420).

5. The L-band broadband signal gain module according to claim 4, characterized in that: The drive assembly (700) includes a rack (710) located in a cavity (420), the rack (710) being slidably connected to the inner wall of the cavity (420), and the rack (710) having a plurality of spaced tooth groups that mesh with a gear (614).

6. The L-band broadband signal gain module according to claim 5, characterized in that: The drive assembly (700) further includes a crankshaft (720) and a connecting rod (730). The crankshaft (720) is rotatably connected to the inner wall of the cavity (420). One end of the connecting rod (730) is sleeved on the crankshaft (720) and movably connected to the crankshaft (720). The other end of the connecting rod (730) is hinged to the end of the rack (710). One end of the crankshaft (720) extends to the top of the cover (200) and is fixed with a nut (740).

7. The L-band broadband signal gain module according to claim 6, characterized in that: A push spring (750) is fixed to one end of the rack (710) away from the connecting rod (730), and one end of the push spring (750) is fixed to the inner wall of the cavity (420).

8. The L-band broadband signal gain module according to claim 3, characterized in that: The bottom end of the movable probe (620) is provided with a strip groove (622), and the strip friction block (621) is inserted into the strip groove (622). A reset spring (623) is fixed at one end of the strip friction block (621) inside the strip groove (622), and one end of the reset spring (623) is fixed to the inner wall of the strip groove (622).

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