A device and design method for continuously adjustable output frequency of L-band devices

Abstract

This invention discloses a continuously adjustable output frequency device and design method for an L-band device, comprising: a cathode, an anode outer cylinder, an anode assembly, and a drive adjustment mechanism. The anode assembly includes an anode block, an anode short-circuit adjustment plate, and an anode extraction port adjustment block. The drive adjustment mechanism includes a drive shaft, a guide groove, a self-aligning bearing, and a scale cover plate. The drive shaft has an L-shaped structure, with the vertical section being a rotating section that passes through the scale cover plate, and the horizontal section being a fixed section. The self-aligning bearing is located at the bottom of the fixed section of the L-shaped drive shaft and is embedded in the guide groove. The drive adjustment mechanism is connected to the anode short-circuit adjustment plate and the anode extraction port adjustment block through the guide groove. When the rotating section of the drive shaft rotates around its own axis, it drives the self-aligning bearing at the bottom of the fixed section of the drive shaft to perform circumferential motion. Since the self-aligning bearing is embedded in the guide groove, the circumferential motion of the self-aligning bearing is converted into axial translation of the anode short-circuit and the anode extraction port adjustment block.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology for L-band devices, and in particular to a device and design method for a continuously adjustable output frequency of an L-band device. Background Technology

[0002] L-band devices achieve different frequency outputs by adjusting the axial positions of the anode short-circuit and the electron beam extraction port. Currently, most L-band devices achieve different frequency outputs by disassembling the anode and cathode vacuum chambers, adjusting the axial dimensions of the anode short-circuit and the anode extraction port according to the desired output frequency, and then reassembling them. This method cannot achieve continuous adjustment of the device's output frequency, and each frequency adjustment process requires repetitive work such as reassembling the anode and cathode, leak checking the vacuum chamber, and evacuating the vacuum chamber, resulting in low experimental efficiency and poor practicality.

[0003] Therefore, a device and design method for a continuously adjustable output frequency of an L-band device are proposed. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and provides a device for continuously adjustable output frequency of L-band devices.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an L-band device with continuously adjustable output frequency, comprising: a cathode, an anode outer cylinder, and an anode assembly disposed within the anode outer cylinder, and further comprising a drive adjustment mechanism. The anode assembly comprises an anode block, an anode short-circuit adjustment plate, and an anode extraction port adjustment block. The anode block is connected to one end of the anode short-circuit adjustment plate and the anode extraction port adjustment block. The drive adjustment mechanism consists of two sets, which are respectively connected to the anode short-circuit adjustment plate and the anode extraction port adjustment block.

[0006] The drive adjustment mechanism includes a drive shaft, a guide groove, a self-aligning bearing, and a scale cover plate. The drive shaft has an L-shaped structure. The vertical section of the L-shaped drive shaft is a rotating section, which passes through the scale cover plate. The horizontal section of the L-shaped drive shaft is a fixed section. The self-aligning bearing is located at the bottom of the fixed section of the L-shaped drive shaft and is embedded in the guide groove.

[0007] The drive adjustment mechanism is connected to the anode short road surface adjustment plate and the anode extraction port adjustment block through the guide groove to restrict the axial degree of freedom of the anode short road surface and the anode extraction port adjustment block;

[0008] When the rotating section of the drive shaft rotates around its own axis, it drives the self-aligning bearing at the bottom of the fixed section of the drive shaft to make a circular motion. Since the self-aligning bearing is embedded in the guide groove, the circular motion of the self-aligning bearing is converted into the axial translation of the anode short road surface and the anode extraction port adjustment block.

[0009] In a preferred embodiment of the present invention, the drive adjustment mechanism is further provided with a sealing component, which is disposed on the rotating section of the L-shaped drive shaft, and the sealing component includes a sealing ring and a sealing pressure plate.

[0010] In a preferred embodiment of the present invention, the sealing ring is disposed at the end away from the scale cover plate, and the sealing pressure plate is disposed between the scale cover plate and the sealing ring, the sealing pressure plate being used to adjust the preload of the sealing ring.

[0011] In a preferred embodiment of the present invention, a fan-shaped guide groove is provided inside the anode outer cylinder, and fan-shaped blocks are evenly distributed around the outer periphery of the anode block. The fan-shaped blocks slide into the fan-shaped guide groove to achieve angular fixation of the anode block.

[0012] In a preferred embodiment of the present invention, the inner wall of the anode outer cylinder is provided with a positioning step, and the anode block is connected to the positioning step by a fixing member to achieve axial fixation of the anode block.

[0013] In a preferred embodiment of the present invention, the outer cylinder of the anode is provided with a boss through hole, the rotating section of the drive shaft passes through the boss through hole, and the scale cover plate is provided outside the boss through hole;

[0014] The sealing plate is an externally threaded circular plate structure, and the inner wall of the boss through hole is provided with a matching internal thread structure. The external thread fits into the internal thread, thereby achieving the sealing of the anode outer cylinder.

[0015] In a preferred embodiment of the present invention, an adjusting rod is provided on the anode short-path adjustment plate, and the anode short-path adjustment plate is connected to the guide groove through the adjusting rod.

[0016] Another technical solution adopted in this invention is a device for designing a continuously adjustable output frequency for the aforementioned L-band device, specifically comprising the following steps:

[0017] S1. Structural Architecture Selection: The architecture adopts a fixed anode assembly and dual independent drive adjustment mechanisms, which respectively correspond to the adjustment requirements of the anode short-circuit and the anode extraction port, avoiding mutual interference;

[0018] S2. Motion Conversion Design: Determine a motion transmission scheme with an L-shaped drive shaft as the core to convert circular motion into axial translational motion, thus meeting the functional requirements of continuous adjustment.

[0019] S3. Anode assembly fixing structure design: The design of the fan-shaped block and the fan-shaped guide groove achieves angular fixing, and the combination of positioning steps and fasteners achieves axial fixing, ensuring the stability of the anode assembly foundation position during adjustment;

[0020] S4. Drive Adjustment Mechanism Design: The L-shaped drive shaft is divided into a vertical rotating section and a horizontal fixed section. A self-aligning bearing is installed at the bottom of the horizontal fixed section. The axial distance between the vertical rotating section and the self-aligning bearing is set as R. The angle of rotation of the vertical rotating section around its axis is θ. The axial movement distances of the anode short-circuit road surface and the anode extraction port adjustment block are I1 and I2, respectively. The self-aligning bearing performs circular motion. The guide groove is fixed by the anode assembly, converting the circular motion into the axial translation of the anode short-circuit road surface and the anode extraction port adjustment block. The displacement satisfies the formula... ;

[0021] S5. Sealing structure design: Select appropriate sealing rings, design external thread sealing pressure plate to adjust preload, and cooperate with self-aligning bearings to reduce radial runout of drive shaft.

[0022] In a preferred embodiment of the present invention, step S4, the design of the drive adjustment mechanism, further includes the following steps:

[0023] Determine the fixed parameter R: The distance R between the axis of the vertical rotating section and the self-aligning bearing is an inherent design parameter of the device. Confirm the parameter value after assembly.

[0024] Adjusting the accuracy of the rotation angle θ: Based on the target axial displacement I, the required rotation angle is calculated using the formula θ=arcsin (I / R). The rotation angle θ of the drive shaft is read through the scale cover of the device. The reference position is marked in the initial state. The angle change is recorded in real time during the rotation. When the desired θ value is reached, it is checked whether the target axial displacement I is met. The adjustment is repeated until the rotation amplitude is precisely controlled.

[0025] This invention addresses the shortcomings of the prior art and has the following beneficial effects:

[0026] Traditional L-band devices often fail to meet the requirements for a wide range and continuous frequency points due to short-circuit anodes, fixed extraction port positions, or discrete adjustment methods (such as plug-in or gear-type). The L-band device output frequency continuously adjustable device of the present invention achieves continuous and stable adjustment of the L-band device output frequency point while ensuring the basic working stability of the device.

[0027] The device of this invention, through the combination of an "L-shaped drive shaft, self-aligning bearing, and guide groove," converts the circular motion of the drive shaft into the axial translation of the anode short-circuit adjustment plate and the anode extraction port adjustment block. It achieves continuous frequency variation without disassembling the components, while simultaneously ensuring that the axial dimensional adjustment accuracy of the anode short-circuit and anode extraction port is no greater than 0.5 mm. During adjustment, the dynamic seal between the drive shaft and the anode vacuum chamber maintains an airtightness better than 5x10⁻⁶. -10 Pa·m 3 / s.

[0028] Furthermore, the drive adjustment mechanism is directly connected to the anode short-circuit adjustment plate and the anode extraction port adjustment block through the guide groove, strictly limiting the axial degree of freedom of both, ensuring that the components only translate along the set direction during the adjustment process, avoiding adjustment errors caused by radial offset or collisions of the internal structure of the device. In addition, the L-shaped drive shaft has a clear division of labor between the "rotation section (vertical)" and the "fixed section (lateral)". The rotation section passes through the scale cover plate to facilitate the perception of the adjustment range during operation, and the self-aligning bearing at the bottom of the fixed section can buffer the radial force during the rotation process, reduce component wear, and at the same time ensure the efficiency of the conversion from circumferential motion to axial translation, avoiding adjustment jamming or displacement deviation. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0030] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the L-band device with continuously adjustable output frequency of the present invention;

[0031] Figure 2 This is an internal structural diagram of the L-band device with continuously adjustable output frequency according to a preferred embodiment of the present invention;

[0032] Figure 3 This is another internal structure diagram of the L-band device with continuously adjustable output frequency according to a preferred embodiment of the present invention;

[0033] Figure 4 This is a side view of a preferred embodiment of the L-band device with continuously adjustable output frequency of the present invention;

[0034] Figure 5 This is a cross-sectional view of a preferred embodiment of the L-band device with continuously adjustable output frequency of the present invention;

[0035] Figure 6 This is a top cross-sectional view of a preferred embodiment of the L-band device with continuously adjustable output frequency of the present invention.

[0036] Figure 7 This is a diagram showing the positional relationship between the drive shaft, guide groove, and self-aligning bearing in a preferred embodiment of the present invention.

[0037] Figure 8 This is an enlarged view of the drive adjustment mechanism structure of a preferred embodiment of the present invention.

[0038] In the diagram: 1. Anode outer cylinder; 10. Boss through hole; 100. Internal thread; 2. Anode assembly; 20. Anode block; 200. Sector block; 21. Anode short-circuit adjustment plate; 210. Adjustment rod; 22. Anode extraction port adjustment block; 3. Drive adjustment mechanism; 30. Drive shaft; 300. Rotating section; 301. Fixed section; 31. Guide groove; 32. Self-aligning bearing; 33. Scale cover plate; 34. Sealing assembly; 340. Sealing ring; 341. Sealing pressure plate; 4. Cathode. Detailed Implementation

[0039] 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.

[0040] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] Traditional L-band devices often fail to meet the requirements for a wide range and continuous frequency points due to short-circuit anodes, fixed extraction port positions, or discrete adjustment methods (such as plug-in or gear-type). The L-band device output frequency continuously adjustable device of the present invention achieves continuous and stable adjustment of the L-band device output frequency point while ensuring the basic working stability of the device.

[0043] like Figures 1 to 8As shown, an L-band device with continuously adjustable output frequency includes: a cathode 4, an anode outer cylinder 1, and an anode assembly 2 disposed within the anode outer cylinder 1; and a drive adjustment mechanism 3. The anode assembly 2 includes an anode block 20, an anode short-circuit adjustment plate 21, and an anode extraction port adjustment block 22. The anode block 20 is connected to one end of the anode short-circuit adjustment plate 21 and the anode extraction port adjustment block 22. The drive adjustment mechanism 3 is connected to the other end of the anode short-circuit adjustment plate 21 and the anode extraction port adjustment block 22. The drive adjustment mechanism 3 includes a drive shaft 30, a guide groove 31, a self-aligning bearing 32, and a scale cover plate 33. The drive shaft 30 has an L-shaped structure, and the vertical section of the L-shaped drive shaft 30 is a rotary... The rotating section 300 passes through the scale cover plate 33. The transverse section of the L-shaped drive shaft 30 is a fixed section 301. The self-aligning bearing 32 is set at the bottom of the fixed section 301 of the L-shaped drive shaft 30 and embedded in the guide groove 31. The drive adjustment mechanism 3 is connected to the anode short road surface adjustment piece 21 and the anode extraction port adjustment block 22 through the guide groove 31 to restrict the axial degree of freedom of the anode short road surface and the anode extraction port adjustment block 22. When the rotating section 300 of the drive shaft 30 rotates around its own axis, it drives the self-aligning bearing 32 at the bottom of the fixed section 301 of the drive shaft 30 to make a circular motion. Since the self-aligning bearing 32 is embedded in the guide groove 31, the circular motion of the self-aligning bearing 32 is converted into the axial translation of the anode short road surface and the anode extraction port adjustment block 22.

[0044] By combining the "L-shaped drive shaft 30, self-aligning bearing 32, and guide groove 31", the circular motion of the drive shaft 30 is converted into the axial translation of the anode short-circuit adjustment plate 21 and the anode extraction port adjustment block 22. The frequency point can be continuously changed without disassembling the components. At the same time, the axial dimension adjustment accuracy of the anode short-circuit and the anode extraction port can be no more than 0.5mm. During the adjustment process, the dynamic sealing airtightness between the drive shaft 30 and the anode vacuum chamber can be guaranteed to be better than 5x10-10Pa·m3 / s.

[0045] Furthermore, the drive adjustment mechanism 3 is directly connected to the anode short-circuit adjustment plate 21 and the anode extraction port adjustment block 22 through the guide groove 31, which strictly restricts the axial degree of freedom of the two, ensuring that the components only move in the set direction during the adjustment process, avoiding adjustment errors caused by radial offset or collisions of the internal structure of the device. In addition, the L-shaped drive shaft 30 has a clear division of labor between the "rotation section 300 (vertical)" and the "fixed section 301 (lateral)". The rotation section 300 passes through the scale cover plate 33 to facilitate the perception of the adjustment range during operation. The self-aligning bearing 32 at the bottom of the fixed section 301 can buffer the radial force during the rotation process, reduce component wear, and at the same time ensure the efficiency of the conversion from circumferential motion to axial translation, avoiding adjustment jamming or displacement deviation.

[0046] In a preferred embodiment of the present invention, a sealing assembly 34 is further provided on the drive adjustment mechanism 3. The sealing assembly 34 is disposed on the rotating section 300 of the L-shaped drive shaft 30. The sealing assembly 34 includes a sealing ring 340 and a sealing pressure plate 341. The sealing ring 340 is disposed at the end away from the scale cover plate 33. The sealing pressure plate 341 is disposed between the scale cover plate 33 and the sealing ring 340. The sealing ring 340 pressure plate is used to adjust the preload of the sealing ring 340. The sealing assembly 34 of the sealing ring 340 and the external thread sealing pressure plate 341 can not only achieve reliable sealing of the anode outer cylinder 1, but also adjust the preload of the sealing ring 340 through the sealing pressure plate 341 to adapt to the sealing requirements under different working conditions. At the same time, the self-aligning bearing 32 reduces the radial runout of the drive shaft 30, further improving the sealing stability and avoiding the risk of leakage.

[0047] In a preferred embodiment of the present invention, a fan-shaped guide groove 31 is provided inside the anode outer cylinder 1, and fan-shaped blocks 200 are evenly distributed around the outer periphery of the anode block 20. The fan-shaped blocks 200 slide into the fan-shaped guide groove 31 to achieve angular fixation of the anode block 20. A positioning step is provided on the inner wall of the anode outer cylinder 1, and the anode block 20 is connected to the positioning step by a fixing member to achieve axial fixation of the anode block 20. The angular fixation of the anode block 20 is achieved by the cooperation of the fan-shaped blocks 200 and the fan-shaped guide groove 31, and the axial fixation is achieved by the cooperation of the positioning step and the fixing member. This ensures that the basic position of the anode assembly 2 is stable during the adjustment process and avoids the adjustment accuracy or device performance being affected by the component displacement.

[0048] In a preferred embodiment of the present invention, a boss through hole 10 is provided on the outer cylinder of the anode, the rotating section 300 of the drive shaft 30 passes through the boss through hole 10, the scale cover plate 33 is provided outside the boss through hole 10, and the inner wall of the boss through hole 10 is provided with a matching internal thread 100 structure, the external thread and the internal thread 100 are fitted together, thereby achieving the sealing of the outer cylinder of the anode.

[0049] In a preferred embodiment of the present invention, an adjusting rod 210 is provided on the anode short road surface adjusting plate 21, and the anode short road surface adjusting plate 21 is connected to the guide groove 31 through the adjusting rod 210.

[0050] In a preferred embodiment of the present invention, there are two sets of drive adjustment mechanisms 3, which are respectively connected to the anode short-circuit adjustment plate 21 and the anode extraction port adjustment block 22. The two sets of drive adjustment mechanisms 3 correspond to the adjustment requirements of the short-circuit and the extraction port, respectively. They do not interfere with each other and can be operated individually or in concert according to the frequency adjustment requirements, thereby improving the adjustment flexibility.

[0051] Another technical solution adopted in this invention is a device for designing a continuously adjustable output frequency for the aforementioned L-band device, specifically comprising the following steps:

[0052] S1. Structural Architecture Selection: The architecture adopts a fixed anode assembly 2 and a dual independent drive adjustment mechanism 3, which respectively correspond to the adjustment requirements of the anode short road surface and the anode extraction port, avoiding mutual interference;

[0053] S2. Motion Conversion Design: Determine the motion transmission scheme with the L-shaped drive shaft 30 as the core, converting circular motion into axial translation to meet the functional requirements of continuous adjustment.

[0054] S3. Anode assembly 2 fixing structure design: The fan-shaped block 200 and the fan-shaped guide groove 31 are designed to achieve angular fixing, and the positioning step and the fixing parts are used to achieve axial fixing, so as to ensure the stability of the foundation position of the anode assembly 2 during adjustment.

[0055] S4. Design of the drive adjustment mechanism 3: The L-shaped drive shaft 30 is divided into a vertical rotating section 300 and a horizontal fixed section 301. A self-aligning bearing 32 is installed at the bottom of the horizontal fixed section 301. The axial distance between the vertical rotating section 300 and the self-aligning bearing 32 is set as R. The angle of rotation of the vertical rotating section 300 around its axis is θ. The distances that the anode short road surface and anode extraction port adjustment block 22 move axially are I1 and I2, respectively. The self-aligning bearing 32 performs circular motion. The guide groove 31 is fixed and restricted by the anode assembly 2, converting the circular motion into the axial translation of the anode short road surface and anode extraction port adjustment block 22. The displacement satisfies the formula... ;

[0056] Through formula Accurate calculation of axial displacement, combined with the scale cover plate 33 for reading the rotation angle, enables precise control of the target displacement and avoids adjustment errors.

[0057] S5. Sealing structure design: Select a suitable sealing ring 340, design an external thread sealing ring 340 pressure plate to adjust the preload, and cooperate with the self-aligning bearing 32 to reduce the radial runout of the drive shaft 30.

[0058] In a preferred embodiment of the present invention, S4, the design of the drive adjustment mechanism 3 further includes the following steps:

[0059] Determine the fixed parameter R: The axial distance R between the vertical rotating section 300 and the self-aligning bearing 32 is an inherent design parameter of the device. Confirm the parameter value after assembly.

[0060] Adjusting the accuracy of the rotation angle θ: Based on the target axial displacement I, the required rotation angle is calculated using the formula θ=arcsin (I / R). The rotation angle θ of the drive shaft 30 is read through the scale cover plate 33 of the device. The reference position is marked in the initial state. The angle change is recorded in real time during the rotation. When the desired θ value is reached, it is checked whether the target axial displacement I is met. The adjustment is repeated until the rotation amplitude is precisely controlled.

[0061] R is the inherent parameter confirmed after assembly, combined with the formula The required rotation angle θ can be directly calculated from the target axial displacement I. The operator does not need to repeatedly measure the displacement. He only needs to rotate the rotating shaft to the calculated θ value through the scale cover plate 33 to directly achieve the target axial length.

[0062] formula A direct correspondence between "angle" and "displacement" was established. The adjustment process does not require additional tools such as micrometers and vernier calipers to measure axial displacement in real time. As long as the target displacement I is the same, the required rotation angle θ is uniquely determined. Regardless of who operates or when, as long as the rotating shaft is rotated to the same θ value, the same axial length can be obtained. This "quantitative standard" ensures the consistency of debugging multiple devices and provides a clear basis for subsequent device maintenance and parameter reproduction, avoiding device performance fluctuations caused by adjustment differences.

[0063] Example 1: Low-frequency point (1.2GHz)

[0064] Scenario requirement: The axial distance between the internal anode short-circuit surface and the extraction port of the device corresponding to this frequency point needs to be finely adjusted, and the target axial displacement... =1.0mm (small displacement to achieve precise low-frequency matching).

[0065] Parameter settings: Inherent parameter R = 10mm, target displacement =1.0mm.

[0066] Angle calculation: According to the formula .

[0067] Adjustment operation:

[0068] Mark the initial reference position of the drive shaft 30 and read the rotation angle through the scale cover plate 33;

[0069] Slowly rotate the vertical section of the L-shaped drive shaft 30 until the scale shows a rotation angle of 5.7°, then stop the operation. Note that both drive adjustment mechanisms 3 should be adjusted simultaneously.

[0070] In Example 2, the frequency point is 1.57 GHz.

[0071] Scenario requirement: At this frequency point, the axial spacing needs to be adjusted by a moderate amplitude to balance the signal gain, and the target axial displacement... =3.0mm (medium displacement covers the intermediate frequency bandwidth requirement).

[0072] Parameter settings: Inherent parameter R = 10mm, target displacement =3.0mm.

[0073] Angle calculation: according to the formula .

[0074] Adjustment operation:

[0075] Starting from the initial reference, the rotation angle is tracked in real time through the scale cover plate 33, and the drive shaft is rotated from 30 to 17.5°. During this process, the radial force is buffered by the self-aligning bearing 32 to avoid adjustment jamming. It should be noted that the two sets of drive adjustment mechanisms 3 are adjusted simultaneously.

[0076] Example 3: High-frequency point (1.8GHz)

[0077] Scenario requirement: This frequency point requires a significant adjustment of the axial spacing to improve signal bandwidth, and the target axial displacement... =5.0mm (large displacement meets the requirements of high frequency and wide range).

[0078] Parameter settings: Inherent parameter R = 10mm, target displacement =5.0mm.

[0079] Angle calculation: according to the formula (Special angle, no approximation error in calculation, highest adjustment accuracy).

[0080] Adjustment operation:

[0081] Since the angle value is an integer, the 30.0° position can be quickly located directly through the scale line 33 on the ruler cover plate;

[0082] When rotating the drive shaft 30, the fan-shaped guide groove 31 is used to limit the angular displacement of the anode block 20, ensuring that it only moves along the axial direction. It should be noted that the two sets of drive adjustment mechanisms 3 are adjusted at the same time.

[0083] After adjustment, confirm that the axial displacement is 5.0mm. At the same time, check the preload of the sealing assembly 34 (fine-tune it through the sealing pressure plate 341) to avoid performance fluctuations caused by seal failure at high frequencies.

[0084] The axial dimension continuous adjustment device for the anode short-circuit and anode extraction port of the L-band device of the present invention has an axial dimension adjustment accuracy of no more than 0.5 mm, and ensures that the dynamic sealing airtightness between the drive shaft 30 and the anode vacuum chamber is better than 5 x 10⁻¹⁰ Pa·m during the adjustment process. 3 / s, enabling continuous adjustment of the device output frequency without disassembling the device vacuum chamber, significantly improving the device's testing efficiency.

[0085] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of these fall within the protection scope of the present invention.

Claims

1. A device for continuously tuning the output frequency of an L-band device, comprising: The cathode, the anode outer cylinder and the anode assembly arranged in the anode outer cylinder, characterized in further comprising driving adjustment mechanisms, the anode assembly comprising an anode block, an anode short-circuit surface adjustment piece and an anode extraction port adjustment block, the anode block being connected at one end of the anode short-circuit surface adjustment piece and the anode extraction port adjustment block, the driving adjustment mechanisms being two sets respectively connected with the anode short-circuit surface adjustment piece and the anode extraction port adjustment block; The driving adjustment mechanisms comprise a driving shaft, a guide groove, a self-aligning bearing and a scale cover plate, the driving shaft being of L-shaped structure, the vertical section of the L-shaped driving shaft being a rotating section, the rotating section penetrating through the scale cover plate, the horizontal section of the L-shaped driving shaft being a fixed section, the self-aligning bearing being arranged at the bottom of the fixed section of the L-shaped driving shaft and embedded in the guide groove; The driving adjustment mechanisms are connected with the anode short-circuit surface adjustment piece and the anode extraction port adjustment block through the guide groove to limit the axial freedom of the anode short-circuit surface and the anode extraction port adjustment block; When the rotating section of the driving shaft rotates around its axis, the self-aligning bearing at the bottom of the fixed section of the driving shaft moves in a circle, and because the self-aligning bearing is embedded in the guide groove, the circular motion of the self-aligning bearing is converted into the axial translation of the anode short-circuit surface and the anode extraction port adjustment block.

2. The apparatus according to claim 1, wherein: The driving adjustment mechanisms are further provided with sealing assemblies, the sealing assemblies being arranged on the rotating section of the L-shaped driving shaft, the sealing assemblies comprising sealing rings and sealing pressure plates.

3. The apparatus according to claim 2, wherein: The sealing rings are arranged at the end away from the scale cover plate, the sealing pressure plates are arranged between the scale cover plate and the sealing rings, and the sealing pressure plates are used to adjust the pre-tightening force of the sealing rings.

4. The apparatus according to claim 3, wherein: The inside of the anode outer cylinder is provided with a fan-shaped guide groove, the periphery of the anode block is provided with fan-shaped blocks uniformly distributed in a circle, and the fan-shaped blocks are slid into the fan-shaped guide groove to realize the angular fixation of the anode block.

5. The apparatus according to claim 4, wherein: The inner wall of the anode outer cylinder is provided with a positioning step, and the anode block is connected with the positioning step through a fixing piece to realize the axial fixation of the anode block.

6. The apparatus according to claim 2, wherein: The anode outer cylinder is provided with a boss through hole, the rotating section of the driving shaft is arranged in the boss through hole, and the scale cover plate is arranged outside the boss through hole. The sealing pressure plates are of outer thread circular plate structure, the inner wall of the boss through hole is provided with a matching inner thread structure, the outer thread is attached to the inner thread, thereby realizing the sealing of the anode outer cylinder.

7. The apparatus of claim 1, wherein: the L-band device is a Gunn diode. The anode short-circuit surface adjustment piece is provided with an adjustment rod, and the anode short-circuit surface adjustment piece is connected with the guide groove through the adjustment rod.

8. A design method of a device for continuously tuning the output frequency of an L-band device, characterized in that: The L-band device output frequency continuous adjustable device is designed according to any one of claims 5-7, and specifically comprises the following steps: S1, structure architecture selection: adopting the architecture of fixed anode assembly and double independent driving adjustment mechanisms to correspond to the adjustment requirements of the anode short-circuit surface and the anode extraction port respectively, and avoiding mutual interference; S2, motion conversion design: determining the motion transmission scheme taking the L-shaped driving shaft as the core to convert the circular motion into axial translation, and meeting the functional requirements of continuous adjustment; S3, anode assembly fixing structure design: design the cooperation structure of sector block and sector guide groove to realize angular fixing, match the positioning step and fixing part to realize axial fixing, and ensure the stable position of anode assembly during adjustment; S4, drive adjustment mechanism design: L-shaped drive shaft is divided into vertical rotation section and horizontal fixed section, the horizontal fixed section bottom is provided with the centering bearing, the axis distance of the vertical rotation section and the centering bearing is set as R, the angle of the vertical rotation section rotating around its axis is θ, the axial movement distance of the anode short circuit surface and the anode extraction port adjusting block is I1 and I2, the centering bearing does the circular motion, the guide groove is limited by the fixation of the anode assembly, the circular motion is converted into the axial translation of the anode short circuit surface and the anode extraction port adjusting block, and the displacement amount satisfies the formula ; S5, sealing structure design: select the appropriate sealing ring, design the external thread type sealing plate to adjust the pre-tightening force, and cooperate with the self-aligning bearing to reduce the radial runout of the driving shaft.

9. The design method of a L-band device output frequency continuously adjustable apparatus according to claim 8, characterized in that: The S4, driving adjustment mechanism design further includes the following steps: Determine the fixed parameter R: the distance R between the vertical rotating segment and the axis of the self-aligning bearing is a device inherent design parameter, and the parameter value is confirmed after assembly is completed; Adjust the rotation angle θ precision: according to the target axial displacement I, the required rotation angle is calculated by combining the formula θ = arcsin (I / R), the rotation angle θ of the driving shaft is read through the scale cover plate of the device, the reference position is marked in the initial state, the angle change is recorded in real time during rotation, and the rotation is stopped at the required θ value. It is detected whether the target axial displacement I is met, and repeated adjustment is performed until the rotation amplitude is accurately controlled.

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