Capacitor and inductor shared switching type cavity filter

Abstract

The invention discloses a capacitor and inductor shared switching type cavity filter, and belongs to the technical field of filters. A capacitor and inductor shared switching type cavity filter comprises a filter cavity and further comprises an input connector and an output connector which are fixedly connected to the outer wall of the filter cavity. The first arc-shaped baffle and the second arc-shaped baffle are fixedly connected to the inner wall of the filter cavity; the fixed table is fixedly connected between the first arc-shaped baffle and the second arc-shaped baffle; the coupling copper sheet is mounted on the fixed table; the cover plate is connected to the filter cavity, a connecting piece is arranged on the cover plate, and one end, arranged in the filter cavity, of the connecting piece is connected with the coupling copper sheet; on the premise of keeping the coupling copper sheet unchanged, random switching of the capacitor and the inductor can be realized, so that different passband suppression requirements of customers are met, the structure is simple and easy to realize, the size is easy to control, the cost is low, and the adjustable range is large.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and in particular to a capacitor-inductor shared switched cavity filter. Background Art

[0002] Cavity filter is an electronic product with frequency selection function. Cavity filter is a microwave filter with a resonant cavity structure, which can filter electromagnetic wave signals, allowing the required signals to pass and suppressing unnecessary signals. It has a strong structure, stable and reliable performance, and has a good frequency selection and filtering effect in circuits and electronic high-frequency systems.

[0003] In filter design, due to the special index requirements, there are usually two requirements for passband left suppression and passband right suppression. This requirement will result in the need for two different products in the design process to meet the left suppression requirement or the right suppression requirement, resulting in unnecessary design costs and processing costs. In view of this, the present invention is specially proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a capacitor-inductor shared switched cavity filter.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A capacitor-inductor shared switched cavity filter comprises a filter cavity and further comprises: An input connector and an output connector fixedly connected to the outer wall of the filter cavity; A first arc-shaped baffle and a second arc-shaped baffle fixedly connected to the inner wall of the filter cavity, wherein the second arc-shaped baffle is connected to the inner wall of one side of the filter cavity near the input connector and the output connector; A fixing platform, fixedly connected between the first arc-shaped baffle plate and the second arc-shaped baffle plate; Coupling copper sheet, mounted on a fixed platform; The cover plate is connected to the filter cavity, and a connector is provided on the cover plate. One end of the connector placed in the filter cavity is connected to the coupling copper sheet.

[0006] Preferably, a support seat is provided on the fixing platform, a slot is provided on the support seat, the coupling copper sheet is connected in the slot, a non-metallic fixing screw is connected to the coupling copper sheet, and the non-metallic fixing screw passes through one end of the coupling copper sheet and is threadedly connected to the support seat.

[0007] Furthermore, the connecting member adopts two capacitor non-metallic screws, the two capacitor non-metallic screws are connected to the cover plate, and one end of the two capacitor non-metallic screws placed in the filter cavity is respectively connected to two ends of the coupling copper sheet.

[0008] Furthermore, the connecting member is an inductor metal screw, two of which are provided, and both are mounted on the cover plate, and the two inductor metal screws are placed in the filter cavity. Preferably, an input fixing plate is provided on the input connector, an input fixing screw is provided on the input fixing plate, and the input fixing screw passes through the input fixing plate and is threadedly connected to the outer wall of the filter cavity.

[0009] Furthermore, an output fixing plate is provided on the output connector, the output fixing plate is in contact with the outer wall of the filter cavity, the output fixing plate is connected with an output fixing screw, the output fixing plate is connected to the outer wall of the filter cavity through the output fixing screw, and the input connector and the output connector are both arranged on the same side of the filter cavity.

[0010] Furthermore, four resonance columns are provided on the inner wall of the filter cavity, and each of the four resonance columns is provided with a recessed hole. A resonance rod is connected to the cover plate, and one end of the resonance rod placed in the filter cavity is inserted into the recessed hole on the resonance column. A resonance nut is threadedly connected to the outer wall of one end of the resonance rod placed outside the cover plate, and the resonance nut is abutted against the outer wall of the cover plate.

[0011] Furthermore, mounting platforms are provided on the two resonant columns close to the input connector and the output connector, and the two mounting platforms are respectively connected with an input copper sheet and an output copper sheet, and the input copper sheet and the output copper sheet are respectively connected with an input locking screw and an output locking screw, and the input copper sheet is fixedly mounted on the mounting platform by the input locking screw, and the output copper sheet is fixedly mounted on the mounting platform by the output locking screw.

[0012] Furthermore, the input connector is connected to an input core rod, the output connector is provided with an output core rod, the input copper sheet and the output copper sheet are both provided with welding grooves, one end of the input core rod placed in the filter cavity is welded to the welding groove on the input copper sheet, and one end of the output core rod placed in the filter cavity is welded to the welding groove on the output copper sheet.

[0013] Preferably, mounting holes are provided on the outer walls of the filter cavity, the first arc-shaped baffle plate and the second arc-shaped baffle plate, mounting screws are connected to the cover plate, and the cover plate is fixedly connected to the mounting holes by the mounting screws, and a tuning rod is also connected to the cover plate, and a tuning nut is threadedly connected to the tuning rod, and the tuning rod is inserted into the filter cavity, and the tuning nut is against the outer wall of the cover plate.

[0014] Compared with the prior art, the present invention provides a capacitor-inductor shared switched cavity filter, which has the following beneficial effects: 1. The capacitor-inductor shared switchable cavity filter has a connector on the coupling copper sheet. The connector can be set to different screws to change the capacitor mode and the inductor mode to achieve different suppression requirements. Under the premise of keeping the coupling copper sheet unchanged, the capacitor and inductor can be switched at will by replacing the connection between the connector and the coupling copper sheet outside the assembled product, thereby meeting the different passband suppression requirements of customers. The structure is simple and easy to implement, the size is easy to control, the cost is low, and the adjustable range is large.

[0015] 2. The capacitor-inductor shared switching cavity filter can realize the suppression requirement of the capacitor mode by using capacitor non-metallic screws as the connecting parts. The capacitor can be used as a filter alone to effectively filter out high-frequency noise.

[0016] 3. The capacitor-inductor shared switched cavity filter can meet the suppression requirements of the inductance mode by setting the connecting parts as inductance metal screws, and can weaken or eliminate high-frequency noise and interference, which has a good effect on improving the power supply system and signal transmission quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a capacitor-inductor shared switched cavity filter proposed by the present invention Figure 1 ; Figure 2 A schematic diagram of the structure of a capacitor-inductor shared switched cavity filter proposed by the present invention Figure 2 ; Figure 3 A schematic top view of a capacitor-inductor shared switched cavity filter without a cover plate proposed by the present invention; Figure 4 This is a schematic structural diagram of the connection between the cover plate and the coupling copper sheet in a capacitor-inductor shared switched cavity filter proposed by the present invention; Figure 5 This is a structural schematic diagram of a capacitor-inductor shared switched cavity filter proposed by the present invention, in which the connecting piece is a capacitor non-metallic screw; Figure 6 A top view of a capacitor-inductor shared switching cavity filter proposed by the present invention, in which the connecting member is a capacitor non-metallic screw; Figure 7 A capacitor-inductor shared switching cavity filter proposed by the present invention Figure 6 Schematic diagram of the AA section; Figure 8 This is a schematic structural diagram of a capacitor-inductor shared switched cavity filter proposed by the present invention, in which the connecting piece is an inductor metal screw; Fig. 9A top view of a capacitor-inductor shared switched cavity filter proposed by the present invention, in which the connecting piece is an inductor metal screw; Fig.10 A capacitor-inductor shared switching cavity filter proposed by the present invention Fig. 9 Schematic diagram of the BB section.

[0018] In the figure: 1. filter cavity; 101. cover plate; 102. mounting screw; 103. mounting hole; 2. input connector; 201. input fixing plate; 202. input fixing screw; 203. input core rod; 3. output connector; 301. output fixing plate; 302. output fixing screw; 303. output core rod; 4. first arc baffle; 401. second arc baffle; 402. resonant column; 403. concave hole; 404. resonant rod; 405. resonant nut; 406. tuning rod; 407. tuning nut; 408. mounting platform; 409. input copper sheet; 410. input locking screw; 411. output copper sheet; 412. output locking screw; 413. fixing platform; 5. connector; 501. coupling copper sheet; 502. non-metallic fixing screw; 503. capacitor non-metallic screw; 504. inductor metal screw; 505. support seat. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0021] Reference Figure 1-Figure 4A capacitor-inductor shared switching cavity filter comprises a filter cavity 1, and also comprises an input connector 2 and an output connector 3 fixedly connected to the outer wall of the filter cavity 1; and a first arc-shaped baffle plate 4 and a second arc-shaped baffle plate 401 fixedly connected to the inner wall of the filter cavity 1, the second arc-shaped baffle plate 401 is connected to the inner wall of one side of the filter cavity 1 close to the input connector 2 and the output connector 3, a fixing platform 413 is fixedly connected between the first arc-shaped baffle plate 4 and the second arc-shaped baffle plate 401, a coupling copper sheet 501 is installed on the fixing platform 413, a cover plate 101 is connected to the filter cavity 1, and a connecting piece 5 is provided on the cover plate 101, and one end of the connecting piece 5 placed in the filter cavity 1 is connected to the coupling copper sheet 501.

[0022] In the present invention, when in use, a signal can be input first through the set input connector 2, so that the signal enters the filter cavity 1. Since the second arc-shaped baffle 401 is connected to the inner wall of one side of the filter cavity 1 near the input connector 2 and the output connector 3, the signal input into the filter cavity 1 can pass between the first arc-shaped baffle 4 and the second arc-shaped baffle 401, and then pass through the coupling copper sheet 501, so as to enhance the coupling effect, and then the signal is output through the output connector 3. It should be noted that a connector 5 is provided on the coupling copper sheet 501 in the present application, and the connector 5 can be set to different screws to change the capacitance mode and the inductance mode to achieve different suppression requirements. Under the premise of keeping the coupling copper sheet 501 unchanged, the connection between the connector 5 and the coupling copper sheet 501 can be replaced outside the assembled product to achieve arbitrary switching of capacitance and inductance, thereby meeting different passband suppression requirements of customers, and the structure is simple and easy to implement, the size is easy to control, the cost is low, and the adjustable range is large.

[0023] A support base 505 is provided on the fixing platform 413 , and a slot is provided on the support base 505 . A coupling copper sheet 501 is connected in the slot. A non-metallic fixing screw 502 is connected to the coupling copper sheet 501 . The non-metallic fixing screw 502 passes through one end of the coupling copper sheet 501 and is threadedly connected to the support base 505 .

[0024] In the present invention, the coupling copper sheet 501 can be conveniently supported by the fixed platform 413, and the support seat 505 is made of non-metallic material. The coupling copper sheet 501 can be fixed on the support seat 505 by the non-metallic fixing screws 502. In addition, the support seat 505 and the non-metallic fixing screws 502 are made of non-metallic materials and have insulating properties, which can effectively prevent the short circuit between the coupling copper sheet 501 and other metal parts. At the same time, it can also withstand a certain amount of mechanical stress, ensuring that the position of the coupling copper sheet 501 in the filter is stable and will not move or be damaged due to vibration or external force; it can enable the coupling copper sheet 501 to better play its role in the filter and ensure the performance and stability of the filter. Example

[0025] Reference Figure 5-Figure 7 A capacitor-inductor shared switching cavity filter comprises a filter cavity 1, and also comprises an input connector 2 and an output connector 3 fixedly connected to the outer wall of the filter cavity 1; and a first arc-shaped baffle plate 4 and a second arc-shaped baffle plate 401 fixedly connected to the inner wall of the filter cavity 1, the second arc-shaped baffle plate 401 is connected to the inner wall of one side of the filter cavity 1 close to the input connector 2 and the output connector 3, a fixing platform 413 is fixedly connected between the first arc-shaped baffle plate 4 and the second arc-shaped baffle plate 401, a coupling copper sheet 501 is installed on the fixing platform 413, a cover plate 101 is connected to the filter cavity 1, and a connecting piece 5 is provided on the cover plate 101, and one end of the connecting piece 5 placed in the filter cavity 1 is connected to the coupling copper sheet 501.

[0026] The connector 5 uses two capacitor non-metallic screws 503 , both of which are connected to the cover plate 101 , and one end of the two capacitor non-metallic screws 503 placed in the filter cavity 1 is connected to the two ends of the coupling copper sheet 501 .

[0027] In this embodiment, by using a capacitor non-metallic screw 503 as the connecting part 5, the filter cavity 1 can achieve the suppression requirement of the capacitor mode. The capacitor can be used as a filter alone, which can effectively filter out high-frequency noise. The coupling copper sheet 501 can be fixed by two capacitor non-metallic screws 503, thereby improving the stability of use. Example

[0028] Reference Figure 8-Figure 10 A capacitor-inductor shared switching cavity filter comprises a filter cavity 1, and also comprises an input connector 2 and an output connector 3 fixedly connected to the outer wall of the filter cavity 1; and a first arc-shaped baffle plate 4 and a second arc-shaped baffle plate 401 fixedly connected to the inner wall of the filter cavity 1, the second arc-shaped baffle plate 401 is connected to the inner wall of one side of the filter cavity 1 close to the input connector 2 and the output connector 3, a fixing platform 413 is fixedly connected between the first arc-shaped baffle plate 4 and the second arc-shaped baffle plate 401, a coupling copper sheet 501 is installed on the fixing platform 413, a cover plate 101 is connected to the filter cavity 1, and a connecting piece 5 is provided on the cover plate 101, and one end of the connecting piece 5 placed in the filter cavity 1 is connected to the coupling copper sheet 501.

[0029] The connector 5 uses an inductor metal screw 504. Two inductor metal screws 504 are provided. Both inductor metal screws 504 are installed on the cover plate 101. The two inductor metal screws 504 are placed in the filter cavity 1. One end is connected to the two ends of the coupling copper sheet 501 respectively.

[0030] In this embodiment, by setting the connecting member 5 as an inductive metal screw 504, the suppression requirement of the inductive mode can be achieved, and high-frequency noise and interference can be weakened or eliminated, which has a good effect on improving the power supply system and signal transmission quality. In addition, the two inductive metal screws 504 can fix the coupling copper sheet 501 and improve the stability of use. Example

[0031] Reference Figure 1-Figure 10 A capacitor-inductor shared switching cavity filter comprises a filter cavity 1, and also comprises an input connector 2 and an output connector 3 fixedly connected to the outer wall of the filter cavity 1; and a first arc-shaped baffle plate 4 and a second arc-shaped baffle plate 401 fixedly connected to the inner wall of the filter cavity 1, the second arc-shaped baffle plate 401 is connected to the inner wall of one side of the filter cavity 1 close to the input connector 2 and the output connector 3, a fixing platform 413 is fixedly connected between the first arc-shaped baffle plate 4 and the second arc-shaped baffle plate 401, a coupling copper sheet 501 is installed on the fixing platform 413, a cover plate 101 is connected to the filter cavity 1, and a connecting piece 5 is provided on the cover plate 101, and one end of the connecting piece 5 placed in the filter cavity 1 is connected to the coupling copper sheet 501.

[0032] An input fixing plate 201 is provided on the input connector 2 , and an input fixing screw 202 is provided on the input fixing plate 201 . The input fixing screw 202 passes through the input fixing plate 201 and is threadedly connected to the outer wall of the filter cavity 1 .

[0033] An output fixing plate 301 is provided on the output connector 3, and the output fixing plate 301 is in contact with the outer wall of the filter cavity 1. An output fixing screw 302 is connected to the output fixing plate 301, and the output fixing plate 301 is connected to the outer wall of the filter cavity 1 through the output fixing screw 302. The input connector 2 and the output connector 3 are both arranged on the same side of the filter cavity 1.

[0034] When installing the input connector 2 and the output connector 3, first connect the input fixing plate 201 and the output fixing plate 301 to the outer wall on the same side of the filter cavity 1 respectively, and then fix the input fixing plate 201 and the output fixing plate 301 respectively by the input fixing screws 202 and the output fixing screws 302, thereby completing the installation of the input connector 2 and the output connector 3. The input and output of signals can be realized by setting the input connector 2 and the output connector 3.

[0035] Four resonance columns 402 are provided on the inner wall of the filter cavity 1, and each of the four resonance columns 402 is provided with a recessed hole 403. A resonance rod 404 is connected to the cover plate 101, and one end of the resonance rod 404 placed in the filter cavity 1 is inserted into the recessed hole 403 on the resonance column 402. A resonance nut 405 is threadedly connected to the outer wall of one end of the resonance rod 404 placed outside the cover plate 101, and the resonance nut 405 is against the outer wall of the cover plate 101.

[0036] In this embodiment, the resonant frequency of the filter can be adjusted by setting the resonant column 402, and the resonant rod 404 can adjust the depth of the recessed hole 403 on the resonant column 402, thereby changing the resonant frequency of the filter, so that the filter can adapt to different operating frequency requirements and improve the flexibility and applicability of the filter; after adjustment, tighten the resonant nut 405 so that it is against the outer wall of the cover plate 101, so that the resonant rod 404 can be fixed, and four resonant columns 402 are provided, which can further enhance the coupling effect.

[0037] A mounting platform 408 is provided on the two resonant columns 402 near the input connector 2 and the output connector 3, and an input copper sheet 409 and an output copper sheet 411 are respectively connected to the two mounting platforms 408, and an input locking screw 410 and an output locking screw 412 are respectively connected to the input copper sheet 409 and the output copper sheet 411. The input copper sheet 409 is fixedly mounted on the mounting platform 408 by the input locking screw 410, and the output copper sheet 411 is fixedly mounted on the mounting platform 408 by the output locking screw 412.

[0038] An input core rod 203 is connected to the input connector 2, an output core rod 303 is provided on the output connector 3, and welding grooves are provided on the input copper sheet 409 and the output copper sheet 411. One end of the input core rod 203 placed in the filter cavity 1 is welded to the welding groove on the input copper sheet 409, and one end of the output core rod 303 placed in the filter cavity 1 is welded to the welding groove on the output copper sheet 411.

[0039] In this embodiment, after the input connector 2 and the output connector 3 are fixedly connected to the outer wall of the filter cavity 1, the input core rod 203 and the output core rod 303 are placed in the filter cavity 1, and then the input core rod 203 is welded to the welding groove on the input copper sheet 409, and the output core rod 303 is welded to the welding groove on the output copper sheet 411, so as to achieve stable fixation. Welding can help reduce the loss during signal transmission and improve transmission efficiency. At the same time, it can make the connection between the input copper sheet 409 and the output copper sheet 411 more stable. The input locking screw 410 and the output locking screw 412 can be set to further fix the input copper sheet 409 and the output copper sheet 411.

[0040] The filter cavity 1, the first arc-shaped baffle plate 4 and the second arc-shaped baffle plate 401 are all provided with mounting holes 103 on their outer walls. The cover plate 101 is connected with mounting screws 102, and the cover plate 101 is fixedly connected in the mounting holes 103 by the mounting screws 102. The cover plate 101 is also connected with a tuning rod 406, and the tuning rod 406 is threadedly connected with a tuning nut 407. The tuning rod 406 is inserted into the filter cavity 1, and the tuning nut 407 is against the outer wall of the cover plate 101.

[0041] In the present invention, when installing the cover plate 101, the mounting screw 102 is inserted into the mounting hole 103, so that the cover plate 101 can be fixed. The coupling frequency can be adjusted by the provided tuning rod 406, and the depth of the tuning rod 406 inserted into the filter cavity 1 is adjustable. After adjustment, the tuning rod 406 can be fixed by the tuning nut 407, making its connection more stable.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A capacitor-inductor shared switched cavity filter, comprising a filter cavity (1), characterized in that: Also includes: An input connector (2) and an output connector (3) fixedly connected to the outer wall of the filter cavity (1); A first arc-shaped baffle (4) and a second arc-shaped baffle (401) fixedly connected to the inner wall of the filter cavity (1), wherein the second arc-shaped baffle (401) is connected to the inner wall of one side of the filter cavity (1) close to the input connector (2) and the output connector (3); A fixing platform (413) fixedly connected between the first arc-shaped baffle plate (4) and the second arc-shaped baffle plate (401); A coupling copper sheet (501) is mounted on a fixing platform (413); A cover plate (101) is connected to the filter cavity (1), and a connecting piece (5) is provided on the cover plate (101), wherein one end of the connecting piece (5) placed in the filter cavity (1) is connected to a coupling copper sheet (501).

2. The capacitor-inductor shared switched cavity filter according to claim 1, characterized in that: The fixing platform (413) is provided with a support seat (505), the support seat (505) is provided with a slot, the coupling copper sheet (501) is connected in the slot, the coupling copper sheet (501) is connected with a non-metallic fixing screw (502), and the non-metallic fixing screw (502) passes through one end of the coupling copper sheet (501) and is threadedly connected to the support seat (505).

3. The capacitor-inductor shared switched cavity filter according to claim 2, characterized in that: The connecting member (5) uses two capacitor non-metallic screws (503), and the two capacitor non-metallic screws (503) are both connected to the cover plate (101), and one end of the two capacitor non-metallic screws (503) placed in the filter cavity (1) is respectively connected to two ends of the coupling copper sheet (501).

4. The capacitor-inductor shared switched cavity filter according to claim 2, characterized in that: The connecting member (5) is an inductive metal screw (504), two of which are provided, and the two inductive metal screws (504) are both mounted on the cover plate (101), and one end of the two inductive metal screws (504) placed in the filter cavity (1) is respectively connected to two ends of the coupling copper sheet (501).

5. The capacitor-inductor shared switched cavity filter according to claim 1, characterized in that: An input fixing plate (201) is provided on the input connector (2), an input fixing screw (202) is provided on the input fixing plate (201), and the input fixing screw (202) passes through the input fixing plate (201) and is threadedly connected to the outer wall of the filter cavity (1).

6. The capacitor-inductor shared switched cavity filter according to claim 5, characterized in that: The output connector (3) is provided with an output fixing plate (301), the output fixing plate (301) is in contact with the outer wall of the filter cavity (1), the output fixing screw (302) is connected to the output fixing plate (301), the output fixing plate (301) is connected to the outer wall of the filter cavity (1) via the output fixing screw (302), and the input connector (2) and the output connector (3) are both arranged on the same side of the filter cavity (1).

7. The capacitor-inductor shared switched cavity filter according to claim 6, characterized in that: Four resonant columns (402) are provided on the inner wall of the filter cavity (1), and each of the four resonant columns (402) is provided with a concave hole (403). A resonant rod (404) is connected to the cover plate (101), and one end of the resonant rod (404) placed in the filter cavity (1) is inserted into the concave hole (403) on the resonant column (402). A resonant nut (405) is threadedly connected to the outer wall of one end of the resonant rod (404) placed outside the cover plate (101), and the resonant nut (405) abuts against the outer wall of the cover plate (101).

8. The capacitor-inductor shared switched cavity filter according to claim 7, characterized in that: A mounting platform (408) is provided on two resonant columns (402) close to the input connector (2) and the output connector (3); an input copper sheet (409) and an output copper sheet (411) are respectively connected to the two mounting platforms (408); an input locking screw (410) and an output locking screw (412) are respectively connected to the input copper sheet (409) and the output copper sheet (411); the input copper sheet (409) is fixedly mounted on the mounting platform (408) by the input locking screw (410); and the output copper sheet (411) is fixedly mounted on the mounting platform (408) by the output locking screw (412).

9. The capacitor-inductor shared switched cavity filter according to claim 8, characterized in that: The input connector (2) is connected to an input core rod (203), the output connector (3) is provided with an output core rod (303), the input copper sheet (409) and the output copper sheet (411) are both provided with welding grooves, one end of the input core rod (203) placed in the filter cavity (1) is welded to the welding groove on the input copper sheet (409), and one end of the output core rod (303) placed in the filter cavity (1) is welded to the welding groove on the output copper sheet (411).

10. The capacitor-inductor shared switched cavity filter according to claim 1, characterized in that: The outer walls of the filter cavity (1), the first arc-shaped baffle plate (4) and the second arc-shaped baffle plate (401) are all provided with mounting holes (103); the cover plate (101) is connected with mounting screws (102); the cover plate (101) is fixedly connected in the mounting holes (103) by means of the mounting screws (102); the cover plate (101) is also connected with a tuning rod (406); a tuning nut (407) is threadedly connected to the tuning rod (406); the tuning rod (406) is inserted in the filter cavity (1); and the tuning nut (407) abuts against the outer wall of the cover plate (101).

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