Cavity filter bank integrated structure

Abstract

The utility model relates to the technical field of microwave communication, in particular to a cavity filter bank integrated structure, which comprises a main body with a cavity, a top opening of the main body is communicated with the cavity, a cover plate covers the top opening of the main body, and the cover plate is detachably connected with the main body through a plurality of sunk screws. Two tuning modules are integrated in the cavity, the bottom of the main body is provided with an output interface which is inserted with a 0.9 mm signal needle of an external system, the output interface is welded and fixed on the cavity through a customized coaxial connector, and the cover plate is provided with an input interface. According to the utility model, by optimizing the cavity layout and the interface design, high-performance signal filtering under a compact size is realized, and special plug-in requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to microwave communication technical field, concretely relates to a cavity filter group integration structure. BACKGROUND

[0002] The conventional filter group usually adopts the split type design, and each unit is independently installed, which leads to large overall size and fixed interface position (such as the input and output ports are usually located in the same plane), and it is difficult to meet the special system interface plug-in requirements. In addition, the existing filter group is difficult to balance the high frequency band out-of-band suppression and low insertion loss performance while maintaining compact size. For example, the conventional design using coaxial connectors or signal pins has the problems of poor structure adaptability and high installation complexity when directly plugged with the system input signal pin. Therefore, there is an urgent need for a filter group with compact structure, flexible interface and superior electrical performance. SUMMARY

[0003] To solve the problems in the background art, the utility model provides a cavity filter group integration structure, which optimizes the cavity layout and interface design to realize high-performance signal filtering under compact size and meet the special plug-in requirements.

[0004] To solve the above problems, the utility model adopts the following technical scheme: a cavity filter group integration structure, comprising a main body with a cavity, the top of the main body is open and communicates with the cavity, a cover plate is arranged on the top opening of the main body, and the cover plate is detachably connected with the main body through a plurality of countersunk head screws, characterized in that two tuning modules are integrated in the cavity, the bottom of the main body is provided with an output interface for plugging with a 0.9mm signal pin of an external system, the output interface is welded and fixed on the cavity through a customized coaxial connector, and an input interface is arranged on the cover plate.

[0005] Further, each of the tuning modules comprises a plurality of resonant rods arranged in the cavity at intervals, the lower ends of the plurality of resonant rods are connected with the bottom wall of the main body, a plurality of nuts are fixed on the cover plate, a plurality of tuning screws are connected with the nuts one by one, and the inner ends of the tuning screws are connected with the upper ends of the resonant rods one by one.

[0006] Further, the other part of the nuts is connected with a plurality of standing wave screws one by one, the inner ends of the standing wave screws extend downward into the cavity, and the tuning screws and the standing wave screws are arranged at intervals.

[0007] Still further, the tuning module further comprises a coupling block and a coupling rod, the coupling block is assembled in the cavity by clamping, and the coupling rod is assembled on the coupling block by penetrating.

[0008] Further, the tuning module comprises two coupling blocks and two coupling rods.

[0009] Still further, the cover plate is provided with a mounting groove, and a mounting block is fixed in the mounting groove by screws.

[0010] Further, the number of the input interface and the output interface is two, two input interfaces are symmetrically arranged on the mounting block, and two output interfaces are symmetrically arranged at the bottom of the main body.

[0011] Further, the input interface is an SMP-J interface.

[0012] The utility model discloses a filter, which comprises a main body, a cavity, a cover plate, a plurality of input interfaces and a plurality of output interfaces. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further described below in combination with the drawings and examples.

[0014] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model;

[0015] Fig. 2 It is the bottom view of the utility model;

[0016] Fig. 3 It is the internal three-dimensional structure schematic diagram of the utility model;

[0017] Fig. 4 It is the internal structure plan of the utility model.

[0018] 1, main body;2, cavity;3, cover plate;4, countersunk screw;5, output interface;6, input interface;7, resonance rod;8, nut;9, tuning screw;10, standing wave screw;11, coupling block;12, coupling rod;13, mounting block. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] The utility model discloses two resonance modules are set up in cavity 2 and do not interfere with each other, and the double unit integration design reduces the space occupied, and the layout of the upper and lower double -sided input interface 6 and output interface 5 can adapt to the installation demand of complex system, expands the application scene, and the resonance module structure optimization and customized coaxial connector in the cavity 2 realize the filter performance of low insertion loss and high suppression.

[0021] A cavity filter group integration structure, as shown in Figs. 1 to 4 The utility model discloses two resonance modules are set up in cavity 2 and do not interfere with each other, and the double unit integration design reduces the space occupied, and the layout of the upper and lower double -sided input interface 6 and output interface 5 can adapt to the installation demand of complex system, expands the application scene, and the resonance module structure optimization and customized coaxial connector in the cavity 2 realize the filter performance of low insertion loss and high suppression.

[0022] Further, the tuning module includes a plurality of resonant rods 7 spaced apart in the cavity 2, the lower ends of the plurality of resonant rods 7 are connected to the bottom wall of the main body 1, a plurality of nuts 8 are fixed on the cover plate 3, a plurality of tuning screws 9 are connected to one part of the nuts 8, and the inner ends of the plurality of tuning screws 9 are connected to the upper ends of the plurality of resonant rods 7.

[0023] Further, another part of the nuts 8 are connected to a plurality of standing wave screws 10, the inner ends of the plurality of standing wave screws 10 extend downward into the cavity 2, and the tuning screws 9 and the standing wave screws 10 are sequentially and spaced apart.

[0024] Further, the tuning module further includes a coupling block 11 and a coupling rod 12, the coupling block 11 is assembled in the cavity 2, and the coupling rod 12 penetrates and is assembled on the coupling block 11.

[0025] Further, the tuning module includes two coupling blocks 11 and two coupling rods 12.

[0026] Further, the cover plate 3 is provided with a mounting groove, the mounting groove is fixed with a mounting block 13 through a screw, and the input interface 6 is embedded on the mounting block 13.

[0027] Further, the number of the input interface 6 and the output interface 5 is two, the two input interfaces 6 are symmetrically arranged on the mounting block 13, and the two output interfaces 5 are symmetrically arranged on the bottom of the main body 1.

[0028] Further, the input interface 6 is an SMP-J interface.

[0029] The utility model discloses two resonance module integrated settings in cavity 2 do not interfere with each other, and double unit integration design reduces the space occupied, and it is convenient to integrate filter into high density equipment, and the layout of input interface 6 and output interface 5 of upper and lower two sides can adapt the installation demand of complex system, expands the application scene, and through the resonance module structure optimization and customization coaxial connector inside cavity 2, realizes the filter performance of low insertion loss high suppression.

[0030] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cavity filter set integrated structure, comprising a main body (1) with a cavity (2), the top of the main body (1) is open and communicates with the cavity (2), a cover plate (3) is arranged on the top of the main body (1), the cover plate (3) is detachably connected with the main body (1) through a plurality of countersunk screws (4), characterized in that, Two tuning modules are arranged in the cavity (2), the bottom of the main body (1) is provided with an output interface (5) for 0.9mm signal pin of external system, the output interface (5) is welded and fixed on the cavity (2) through a customized coaxial connector, and the cover plate (3) is provided with an input interface (6).

2. The integrated structure of a cavity filter set according to claim 1, wherein: Each of the tuning modules comprises a plurality of resonance rods (7) arranged in the cavity (2) at intervals, the lower ends of the resonance rods (7) are connected with the bottom wall of the main body (1), a plurality of nuts (8) are fixed on the cover plate (3), a plurality of tuning screws (9) are connected with the nuts (8) one by one, and the inner ends of the tuning screws (9) are connected with the upper ends of the resonance rods (7) one by one.

3. The integrated structure of a cavity filter set according to claim 2, wherein: The inner ends of a plurality of standing wave screws (10) connected with the other nuts (8) one by one extend into the cavity (2) downward, and the tuning screws (9) and the standing wave screws (10) are arranged at intervals.

4. The integrated structure of a cavity filter set according to claim 2, wherein: The tuning module further comprises a coupling block (11) and a coupling rod (12), the coupling block (11) is clamped and assembled in the cavity (2), and the coupling rod (12) is assembled on the coupling block (11).

5. The integrated structure of a cavity filter set according to claim 4, wherein: The tuning module comprises two coupling blocks (11) and two coupling rods (12).

6. The integrated structure of a cavity filter set according to claim 1, wherein: An installation groove is formed in the cover plate (3), an installation block (13) is fixed in the installation groove through screws, and the input interface (6) is embedded on the installation block (13).

7. The cavity filter assembly of claim 6, wherein: The number of the input interface (6) and the output interface (5) is two, two input interfaces (6) are symmetrically arranged on the installation block (13), and two output interfaces (5) are symmetrically arranged on the bottom of the main body (1).

8. The integrated structure of a cavity filter set according to claim 1, wherein: The input interface (6) is an SMP-J interface.

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