CN203434256U

CN203434256U - Waveguide filter

Info

Publication number: CN203434256U
Application number: CN201320515366.3U
Authority: CN
Inventors: 张炜
Original assignee: Mitec Communications Equipment (suzhou) Co Ltd
Current assignee: Mitec Communications Equipment (suzhou) Co Ltd
Priority date: 2013-08-22
Filing date: 2013-08-22
Publication date: 2014-02-12
Anticipated expiration: 2023-08-22

Abstract

The utility model discloses a waveguide filter including a metal box, a PCB and adjusting screws. The metal box includes an upper part and a lower part. The upper part of the metal box is a cuboid which is provided with a cuboid groove at the middle. The bottom part of the upper part of the metal box is provided with threaded through holes which cooperate with the adjusting screws. The lower part of the metal box is a cuboid which is provided with a cuboid groove at the middle. The cuboid of the upper part of the metal box and the cuboid of the lower part of the metal box are identical in size and shape and the grooves are also identical in position and size. The PCB includes an insulating layer at the middle and upper-surface and lower-surface metal layers closely stick to the insulating layer. The two sides of the upper-surface and lower-surface metal layers are provided with through holes which penetrate through the insulating layer and are connected with the upper-surface and lower-surface metal layers. The middle parts of the upper-surface and lower-surface metal layers are hollow shaped. The two side edges of the PCB stick closely to the end parts at the two sides of the grooves at the upper and lower parts of the metal box. The waveguide filter is convenient to process, stable in performance and convenient in frequency and signal-coupling-quantity adjustment of the filter.

Description

A kind of waveguide filter

Technical field

The utility model relates to a kind of microwave filter of wireless communication field.

Background technology

Existing radio communication detecting system waveguide filter is commonly used in data return system, metal film chip waveguide filter is applied in this system, in traditional metallic membrane filter, the processing of metallic membrane is mainly cut into master with line, because diaphragm itself is very thin, easily distortion, the consistency of size is difficult to assurance, and the adjusting of the frequency of metallic membrane filter and the coupling of signal is also inconvenient simultaneously.

Summary of the invention

The purpose of this utility model is to provide a kind of easy to process, stable performance, is convenient to the microwave filter of regulating frequency and signal coupling.

For achieving the above object, the utility model adopts following technical scheme: a kind of waveguide filter, comprise can, pcb board and adjustment screw,

Described can comprises upper and lower two parts, in the middle of being divided into, can top is provided with the cuboid of cuboid groove, on can, the bottom of part is provided with the tapped through hole coordinating with adjustment screw, in the middle of being divided into, can bottom is provided with the cuboid of cuboid groove, on can, the cuboid of part is consistent with the cuboid size shape of part under can, and the position of groove is also consistent with size;

Insulating barrier in the middle of described pcb board comprises and the metal level that is close to the above and below of insulating barrier, the dual-side of the metal level of described above and below is provided with the through hole that runs through insulating barrier and connect above and below metal level, and the centre of the metal level of described above and below is Openworks shape;

The dual-side of described pcb board is close to mutually with the end on the groove both sides of upper and lower two parts of can.

As the further optimization of such scheme, described adjustment screw is cylindric.

As the further optimization of such scheme, each end area on the groove both sides of upper and lower two parts of described can is less than the area of each side of pcb board.

As the further optimization of such scheme, described tapped through hole is 3 or 4 or 5 or 6.

The beneficial effects of the utility model main manifestations is: compared to traditional metal diaphragm, pcb board have processing simply, the feature of not yielding and high conformity, and pcb board metal level of the present utility model can make the shape of various hollow outs by processing technologys such as etchings, improved the flexibility of pcb board design; Meanwhile, on can, the bottom of part is provided with the tapped through hole coordinating with adjustment screw, stretches into the length of adjustment screw in can by adjusting, and the frequency of filter and signal coupling are finely tuned, very convenient.

Accompanying drawing explanation

Fig. 1 is the schematic top plan view of the utility model pcb board.

Fig. 2 is the vertical cross-section schematic diagram of the utility model pcb board.

Fig. 3 is structural representation of the present utility model.

Wherein 1 is metal level, the 2nd, and through hole, the 3rd, insulating barrier, the 4th, pcb board, the 5th, adjustment screw, the 6th, part on can, the 7th, part under can.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, the utility model will be further described.

As shown in Figure 1,2 and 3, a kind of waveguide filter, comprises can, pcb board 4 and adjustment screw 5,

Described can comprises upper and lower two parts, on can, part 6 is the middle cuboid that is provided with cuboid groove, on can, the bottom of part 6 is provided with the tapped through hole coordinating with adjustment screw 5, under can, part 7 is the middle cuboid that is provided with cuboid groove, on can, the cuboid of part 6 is consistent with the cuboid size shape of part under can 7, and the position of groove is also consistent with size;

Insulating barrier 3 in the middle of described pcb board 4 comprises and the metal level 1 that is close to the above and below of insulating barrier 3, the dual-side of the metal level 1 of described above and below is provided with the through hole 2 that runs through insulating barrier 3 and connect above and below metal level 1, the centre of the metal level 1 of described above and below is Openworks shape, the metal level 1 of pcb board 4 both sides connects by a lot of through hole 2, form equipotential plane, guaranteed conducting of two sides metal level 1;

The dual-side of described pcb board 4 is close to mutually with the end on the groove both sides of upper and lower two parts of can.Described adjustment screw 5 is cylindric.Each end area on the groove both sides of upper and lower two parts of described can is less than the area of pcb board 4 each sides.Described tapped through hole is 4.Between can cavity and pcb board 4, form a kind of cavity of sealing, by regulating the length of adjustment screw 5 in can, the easily frequency of fine adjustment filter and signal coupling amount.

The utility model has substituted traditional metal diaphragm with pcb board 4, for pcb board metal level 1, the metal level 1 of pcb board 4 both sides goes out the region of some hollow outs by etching or other processes, adjust the size in these hollow out regions, can regulate the size of joint number, single-unit resonance frequency and the signal coupling amount of filter, greatly bring up to the flexibility of design, and can metal level 1 done very thinly, compare for some diaphragm type filters, can reach the effect of reduced volume.And the pcb board 4 of this filter adds man-hour, compared with traditional metallic membrane, to process simply too muchly, the pcb board 4 that etching and processing technique obtains can reach higher precision and consistency.

By reference to the accompanying drawings the utility model preferred implementation is explained in detail above, but the utility model is not limited to above-mentioned execution mode, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from the utility model aim, make a variety of changes.

Do not depart from design of the present utility model and scope and can make many other changes and remodeling.Should be appreciated that the utility model is not limited to specific execution mode, scope of the present utility model is defined by the following claims.

Claims

1. a waveguide filter, comprise can, pcb board and adjustment screw, described can comprises upper and lower two parts, in the middle of being divided into, can top is provided with the cuboid of cuboid groove, on can, the bottom of part is provided with the tapped through hole coordinating with adjustment screw, in the middle of can bottom is divided into, be provided with the cuboid of cuboid groove, on can, the cuboid of part is consistent with the cuboid size shape of part under can, and the position of groove is also consistent with size;

2. waveguide filter according to claim 1, is characterized in that, described adjustment screw is cylindric.

3. waveguide filter according to claim 1, is characterized in that, each end area on the groove both sides of upper and lower two parts of described can is less than the area of each side of pcb board.

4. waveguide filter according to claim 1 and 2, is characterized in that, described tapped through hole is 3.

5. waveguide filter according to claim 1 and 2, is characterized in that, described tapped through hole is 4.

6. waveguide filter according to claim 1 and 2, is characterized in that, described tapped through hole is 5.

7. waveguide filter according to claim 1 and 2, is characterized in that, described tapped through hole is 6.