CN216793963U

CN216793963U - Airborne debugging-free high-power cross-coupled filter

Info

Publication number: CN216793963U
Application number: CN202220325667.9U
Authority: CN
Inventors: 王依卿; 姚李君; 李莺珏; 孙超
Original assignee: Zhejiang Jec Electronics Co ltd
Current assignee: Zhejiang Jec Electronics Co ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-06-21
Anticipated expiration: 2032-02-17

Abstract

The utility model relates to an airborne debugging-free high-power cross-coupling filter. The cavity filter solves the technical problems that the existing cavity filter is not reasonable in design and the like. Including the wave filter casing that has the inner chamber, wave filter casing one side is equipped with first connector, and the opposite side is equipped with the second connector, and both ends are uncovered respectively about the wave filter casing, and wave filter casing upper end removable mounting has an upper cover plate, and wave filter casing lower extreme removable mounting has down the apron, has the resonance bar that a plurality of axial distribute in proper order and set up in the wave filter casing, and is connected with the cross coupling horizontal pole that sets up along wave filter casing axial slope between two nonadjacent resonance bars in a plurality of resonance bars. Has the advantages that: through the collaborative filtering of the resonance rod and the cross-coupled cross rod in the filter shell, the design of a large number of tuning screws in the traditional filter is replaced, the power capacity of the filter is improved, and the debugging workload is reduced. The manufacturing process and the components are few, the manufacturing cost is low, the efficiency is high, and the consistency of products is ensured.

Description

Airborne debugging-free high-power cross-coupled filter

Technical Field

The utility model belongs to the technical field of filter equipment, and particularly relates to an airborne debugging-free high-power cross-coupled filter.

Background

In an airborne high-power interference system, a cavity filter is often used to filter out stray signals and harmonic signals outside the band. With the gradual trend of modern interference systems towards array application, the transmission power requirement is higher and higher, and the requirements of power resistance, small volume, light weight and high consistency are also provided for a matched filter. However, the conventional cavity filter has many disadvantages in dealing with the above situations. The main body is as follows: 1. the traditional cavity filter needs to be tuned by a large number of tuning screws which are usually fastened by nuts, and when the cavity filter is applied to an airborne platform, frequent vibration of an airplane per se often causes the problem that the screws of the filter are loosened after the filter works for a long time, so that the filter fails; 2. due to the existence of the tuning screw, the traditional filter is difficult to realize integral air tightness, so that the ignition condition of the filter frequently occurs under the conditions of high altitude and low air pressure when the filter is applied to an airborne platform, and the power capacity of the filter is limited; 3. the traditional filter can only reduce the loss of the filter and improve the power capacity of the filter by adopting a mode of increasing the volume and the coupling gap distance, so that the filter with high power capacity has large volume and heavy weight and cannot meet the requirements of miniaturization and light weight of an airborne platform; 4. the traditional filter tuning rod, the tuning screw and the like need to be manually assembled and tuned, and the production process is complicated. In a mass production process, it is difficult to achieve a high consistency production of the filter.

Disclosure of Invention

The utility model aims to solve the problems and provides an onboard debugging-free high-power cross-coupled filter.

In order to achieve the purpose, the utility model adopts the following technical scheme: this high-power cross coupling wave filter of debugging type is exempted from to machine carries, including the wave filter casing that has the inner chamber, its characterized in that, wave filter casing one side be equipped with first connector, the opposite side is equipped with the second connector, the wave filter casing about both ends open respectively, just wave filter casing upper end demountable installation have an upper cover plate, apron under the wave filter casing detachable installation has a plurality of axial resonance bars that distribute in proper order and set up in the wave filter casing, and be connected with the cross coupling horizontal pole that sets up along wave filter casing axial slope through the detachable mode between two nonadjacent resonance bars in a plurality of resonance bars.

In the airborne debugging-free high-power cross-coupled filter, the filter shell is rectangular, the upper cover plate is arranged at the upper end of the filter shell through a plurality of upper cover plate screws, and the lower cover plate is arranged at the lower end of the filter shell through a plurality of lower cover plate screws, so that the upper end and the lower end of the filter shell are sealed.

In the above airborne debugging-free high-power cross-coupled filter, the first connector is mounted on one side of the filter housing through a plurality of first connector screws and is connected with the resonance rod on the side in the filter housing, the second connector is mounted on the other side of the filter housing through a plurality of second connector screws and is connected with the resonance rod on the other side in the filter housing.

In the above airborne debugging-free high-power cross-coupled filter, the number of the resonant rods is 6, and the cross-coupled cross rod is connected between the second resonant rod and the fifth resonant rod.

In the airborne debugging-free high-power cross-coupled filter, each resonance rod is provided with a metal rod and a metal hammer head which are different in length, the metal hammer heads are connected with the inner wall of the filter shell through the metal rods, and the metal hammer heads are sequentially arranged in a staggered mode along the axial direction of the filter shell.

In the airborne debugging-free high-power cross-coupling filter, one end of the cross-coupling cross rod is connected with one end, away from the metal hammer, of the metal rod of the second resonance rod through the first cross-coupling rod screw, and the other end of the cross-coupling cross rod is connected with one end, away from the metal hammer, of the metal rod of the fifth resonance rod through the second cross-coupling rod screw.

In the airborne debugging-free high-power cross-coupling filter, the metal rods of the resonance rods extend along the width direction of the filter shell and are arranged in parallel, one end, away from the metal hammer, of the metal rod of the second resonance rod and one end, away from the metal hammer, of the metal rod of the fifth resonance rod are respectively provided with a cross-coupling rod mounting seat which is connected with the first cross-coupling rod screw or the second cross-coupling rod screw and extends towards the upper end of the filter shell.

In the airborne debugging-free high-power cross-coupled filter, the metal hammer head is vertically arranged, two ends of the metal hammer head do not extend out of the filter shell to be open, the middle part or the end part of the metal hammer head is connected with one end of the metal rod, at least one side of the metal rod is provided with a rod chamfer, and the circumferential outer side of the metal hammer head is provided with a hammer chamfer.

In the airborne debugging-free high-power cross-coupled filter, the upper cover plate, the filter shell, the lower cover plate and the cross-coupled cross rod are all made of aluminum alloy materials.

In the airborne debugging-free high-power cross-coupled filter, the surfaces of the upper cover plate, the filter shell, the lower cover plate and the cross-coupled cross rod are all provided with silver coatings.

Compared with the prior art, the utility model has the advantages that: simple structure through inside resonance pole of wave filter casing and cross coupling horizontal pole collaborative filtering, replaces a large amount of tuning screw designs in the traditional wave filter, improves wave filter power capacity, reduces the debugging work load. Meanwhile, the filter structural parts are all processed with high precision, the aluminum alloy material is adopted to ensure the characteristics of conductivity, low cost, rust prevention, light weight and the like, the manufacturing procedures and the components are few, the manufacturing cost is low, the efficiency is high, and the product consistency is ensured.

Drawings

Fig. 1 is an exploded view of the structure of the present invention.

Fig. 2 is a side view of a filter housing according to the present invention.

Fig. 3 is a sectional view of the structure of fig. 2 taken from a-a.

In the figure: the filter comprises a filter housing 1, an upper cover plate 11, an upper cover plate screw 111, a lower cover plate 12, a lower cover plate screw 121, a first connector 2, a first connector screw 21, a second connector 3, a second connector screw 31, a resonance rod 4, a metal rod 41, a rod chamfer 411, a metal hammer 42, a hammer chamfer 421, a cross coupling cross bar 5, a first cross coupling rod screw 51, a second cross coupling rod screw 52 and a cross coupling rod mounting seat 53.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, the present onboard debugging-free high-power cross-coupling filter includes a filter housing 1 having an inner cavity, a first connector 2 is disposed on one side of the filter housing 1, a second connector 3 is disposed on the other side of the filter housing 1, the upper and lower ends of the filter housing 1 are respectively open, an upper cover plate 11 is detachably mounted on the upper end of the filter housing 1, a lower cover plate 12 is detachably mounted on the lower end of the filter housing 1, a plurality of axially distributed resonance rods 4 are disposed in the filter housing 1, and a cross-coupling cross rod 5 disposed along the axial direction of the filter housing 1 is detachably connected between two nonadjacent resonance rods 4 in the plurality of resonance rods 4. Signals are input from the first connector 2, coupled filtering is carried out through the resonance rods 4 and the cross coupling rods 5 in the filter shell, signals are output from the second connector 3, and the design of a large number of tuning screws in a traditional cavity filter is replaced, so that the requirements of high performance, miniaturization and light weight are met, the production and manufacturing cost is greatly reduced, and the product quality and the production efficiency are improved.

Preferably, the filter housing 1 in this embodiment has a rectangular frame shape, the upper cover plate 11 is mounted on the upper end of the filter housing 1 by a plurality of upper cover plate screws 111, and the lower cover plate 12 is mounted on the lower end of the filter housing 1 by a plurality of lower cover plate screws 121 so as to seal the upper and lower ends of the filter housing 1, and the upper cover plate 11 and the lower cover plate 12 can ensure the whole air tightness of the filter housing 1.

The upper cover plate 11, the filter shell 1, the lower cover plate 12 and the cross coupling cross rod 5 are all made of rustproof aluminum alloy materials and are processed with high precision, so that the structural precision is guaranteed, the consistency of products is realized, and the characteristics of conductivity, low cost, rust prevention, light weight and the like are guaranteed. Furthermore, the surfaces of the upper cover plate 11, the filter housing 1, the lower cover plate 12 and the cross-coupling cross bar 5 are all provided with silver plating layers, and the silver plating process is adopted on the surfaces to further improve the Q value of the filter.

Preferably, the first connector 2 is mounted on one side of the filter housing 1 by a plurality of first connector screws 21 and the first connector 2 is connected to the resonance rod 4 located on one side in the filter housing 1, and the second connector 3 is mounted on the other side of the filter housing 1 by a plurality of second connector screws 31 and the second connector 3 is connected to the resonance rod 4 located on the other side in the filter housing 1. Wherein the number of the resonant rods 4 is 6, and the cross coupling cross bar 5 is connected between the second resonant rod 4 and the fifth resonant rod 4.

Wherein, each resonance pole 4 here all has metal pole 41 and the metal tup 42 of different length, and the metal tup 42 passes through metal pole 41 and links to each other with filter housing 1 inner wall, and metal tup 42 misplaces the setting in proper order along filter housing 1 axial. In order to filter signals with different frequencies, the shapes and the position sizes of the metal hammer head 42 and the metal rod 41 of the filter shell 1 and the cross coupling cross rod 5 can be adjusted.

Preferably, one end of the cross-coupling cross bar 5 is connected with one end of the metal rod 41 of the second resonance rod 4 far away from the metal hammer head 42 through a first cross-coupling rod screw 51, and the other end of the cross-coupling cross bar 5 is connected with one end of the metal rod 41 of the fifth resonance rod 4 far away from the metal hammer head 42 through a second cross-coupling rod screw 52.

The metal rods 41 of the resonance rods 4 are arranged to extend in the width direction of the filter housing 1, and the metal rods 41 of two adjacent resonance rods 4 are arranged in parallel, and one end of the metal rod 41 of the second resonance rod 4, which is far away from the metal hammer head 42, and one end of the metal rod 41 of the fifth resonance rod 4, which is far away from the metal hammer head 42, are respectively provided with a cross-coupling rod mounting seat 53 which is screwed with the first cross-coupling rod screw 51 or the second cross-coupling rod screw 52 and extends towards the upper end of the filter housing 1.

Preferably, the metal hammer head 42 is vertically arranged, two ends of the metal hammer head 42 do not exceed the opening of the filter housing 1, the middle part or the end part of the metal hammer head 42 is connected with one end of the metal rod 41, at least one side of the metal rod 41 is provided with a rod chamfer 411, the circumferential outer side of the metal hammer head 42 is provided with a hammer chamfer 421, and the metal hammer head 42 and the metal rod 41 can be integrally formed and also can be fixedly connected.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although terms such as the filter housing 1, the upper cover plate 11, the upper cover plate screw 111, the lower cover plate 12, the lower cover plate screw 121, the first connector 2, the first connector screw 21, the second connector 3, the second connector screw 31, the resonance rod 4, the metal rod 41, the rod chamfer 411, the metal hammer head 42, the hammer head chamfer 421, the cross-coupling cross bar 5, the first cross-coupling rod screw 51, the second cross-coupling rod screw 52, the cross-coupling rod mount 53, etc., are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a high-power cross coupling filter of airborne debugging-free type, is including filter casing (1) that has the inner chamber, its characterized in that, filter casing (1) one side be equipped with first connector (2), the opposite side is equipped with second connector (3), filter casing (1) about both ends respectively uncovered, just filter casing (1) upper end removable the installation have upper cover plate (11), apron (12) down are installed to filter casing (1) lower extreme removable, have resonance bar (4) that a plurality of axial distribute in proper order and set up in filter casing (1), and be connected with cross coupling horizontal pole (5) that set up along filter casing (1) axial slope through removable mode between two non-adjacent resonance bar (4) in a plurality of resonance bar (4).

2. The airborne debugging-free high-power cross-coupled filter according to claim 1, wherein the filter housing (1) is rectangular frame-shaped, the upper cover plate (11) is mounted at the upper end of the filter housing (1) through a plurality of upper cover plate screws (111) and the lower cover plate (12) is mounted at the lower end of the filter housing (1) through a plurality of lower cover plate screws (121) so as to seal the upper and lower ends of the filter housing (1).

3. The airborne debug-free high-power cross-coupled filter according to claim 2, wherein the first connector (2) is mounted on one side of the filter housing (1) through a plurality of first connector screws (21) and the first connector (2) is connected to the side of the resonance rod (4) in the filter housing (1), the second connector (3) is mounted on the other side of the filter housing (1) through a plurality of second connector screws (31) and the second connector (3) is connected to the other side of the resonance rod (4) in the filter housing (1).

4. The on-board debugging-free high-power cross-coupled filter according to claim 1, 2 or 3, wherein the number of the resonant rods (4) is 6, and the cross-coupled cross-bar (5) is connected between the second resonant rod (4) and the fifth resonant rod (4).

5. The airborne debugging-free high-power cross-coupling filter according to claim 4, wherein each resonant rod (4) is provided with a metal rod (41) and a metal hammer head (42) which are different in length, the metal hammer heads (42) are connected with the inner wall of the filter shell (1) through the metal rods (41), and the metal hammer heads (42) are sequentially arranged in a staggered manner along the axial direction of the filter shell (1).

6. The airborne debugging-free high-power cross-coupled filter according to claim 5, wherein one end of the cross-coupled cross rod (5) is connected with one end of the metal rod (41) of the second resonant rod (4) far away from the metal hammer head (42) through a first cross-coupled rod screw (51), and the other end of the cross-coupled cross rod (5) is connected with one end of the metal rod (41) of the fifth resonant rod (4) far away from the metal hammer head (42) through a second cross-coupled rod screw (52).

7. The airborne debugging-free high-power cross-coupled filter according to claim 6, wherein the metal rods (41) of the resonant rods (4) are extended along the width direction of the filter housing (1) and the metal rods (41) of two adjacent resonant rods (4) are arranged in parallel, and one end of the metal rod (41) of the second resonant rod (4) away from the metal hammer head (42) and one end of the metal rod (41) of the fifth resonant rod (4) away from the metal hammer head (42) are respectively provided with a cross-coupled rod mounting seat (53) which is connected with the first cross-coupled rod screw (51) or the second cross-coupled rod screw (52) and extends towards the upper end of the filter housing (1).

8. The airborne debugging-free high-power cross-coupling filter according to claim 7, wherein the metal hammer head (42) is vertically arranged, both ends of the metal hammer head do not protrude out of the opening of the filter housing (1), the middle part or the end part of the metal hammer head (42) is connected with one end of the metal rod (41), at least one side of the metal rod (41) is provided with a rod chamfer (411), and the circumferential outer side of the metal hammer head (42) is provided with a hammer chamfer (421).

9. The airborne debugging-free high-power cross-coupled filter according to claim 8, wherein the upper cover plate (11), the filter housing (1), the lower cover plate (12) and the cross-coupling cross bar (5) are all made of aluminum alloy materials.

10. The airborne debugging-free high-power cross-coupled filter according to claim 9, wherein the surfaces of the upper cover plate (11), the filter housing (1), the lower cover plate (12) and the cross-coupling cross bar (5) are all provided with silver coatings.