CN214378778U - 5G filter - Google Patents

Abstract

The utility model provides a 5G wave filter, include one end open-ended cavity, install the apron of cavity open end and set up in inside non-adjacent first resonant cavity and the second resonant cavity of cavity, the bottom in the first resonant cavity is equipped with first mount table, first resonance post is installed to first mount table, bottom in the second resonant cavity is equipped with the second mount table, the second resonance post is installed to the second mount table, be equipped with the capacitive cross-coupling structure between first resonant cavity and the second resonant cavity, the capacitive cross-coupling structure includes the coupling muscle, the one end of coupling muscle forms the outer wall of first mount table, the other end stretches into in the second resonant cavity and with have the clearance between the second resonance post. The utility model discloses simple structure, it is small, with low costs, very big demand that has satisfied the market.

Description

5G filter

[ technical field ] A method for producing a semiconductor device

The utility model relates to a radio frequency communication field, concretely relates to 5G wave filter.

[ background of the invention ]

With the rapid development of 5G communication technology, the spectrum resource is increasingly tense, and the suppression requirement on the filter is higher and higher.

The filter mainly functions to pass only a desired signal and to suppress an undesired signal so that the undesired signal does not pass through the filter. Therefore, the problems of insufficient and short-lived limited frequency spectrum resources caused by wireless communication signals which are developed rapidly at present are effectively solved. The requirements for these filters are also becoming more and more demanding. The filter has the advantages of small insertion loss, high power, small volume, light weight and the like, and in practical application, the production period of the filter also becomes very short, so that a designer needs to design the corresponding filter quickly and accurately. The filters are of many kinds and use different filters for different scenes and frequency bands. A cavity filter is one of many filters. The novel high-power-consumption three-phase motor has the characteristics of stable performance, high Q value, high power and the like, is most excellent in the same type, and has very high research value.

The current filter needs small insertion loss and large out-of-band rejection degree, and the requirement of indexes is realized by adopting a cross coupling method under most conditions. However, when the frequency of the 5G filter is reached, the flying bar or the copper rod is too large in size relative to the resonant cavity, the structure is complex, the size of the filter can be increased, the cost is high, and the requirements of the market cannot be met.

Therefore, there is a need for an improved 5G filter.

[ Utility model ] content

The utility model aims to provide a 5G wave filter, simple structure, it is small, with low costs.

In order to achieve the above object, the present invention provides a 5G filter, including one end open-ended cavity, install the apron of cavity open end and set up in inside non-adjacent first resonant cavity and the second resonant cavity of cavity, the bottom in the first resonant cavity is equipped with first mount table, first resonance post is installed to first mount table, the bottom in the second resonant cavity is equipped with the second mount table, the second resonance post is installed to the second mount table, be equipped with capacitive cross-coupling structure between first resonant cavity and the second resonant cavity, capacitive cross-coupling structure includes the coupling muscle, the one end of coupling muscle is formed to the outer wall of first mount table, the other end stretch into in the second resonant cavity and with have the clearance between the second resonance post.

Preferably, the coupling rib is L-shaped.

As a preferred technical solution, the coupling rib includes a transverse portion and a vertical portion formed at one end of the transverse portion, which is far away from the vertical portion, forms an outer wall of the first mounting table, one end of the transverse portion, which forms the vertical portion, extends into the second resonant cavity, the vertical portion is located in the second resonant cavity and extends toward the cover plate, and a gap is formed between the vertical portion and the second resonant column.

As a preferred technical scheme, the coupling rib, the first mounting table and the cavity are integrally formed.

As a preferable technical scheme, the device further comprises an adjusting screw, wherein a first end of the adjusting screw is positioned outside the cavity and is mounted on the cover plate through a nut, and a second end of the adjusting screw penetrates through the cover plate and extends into the cavity; the adjusting screw rod is positioned above the transverse part of the coupling rib and positioned on one side of the vertical part of the coupling rib; the nut is rotated, and the depth of the adjusting screw rod extending into the cavity can be adjusted through the adjusting screw rod, so that the capacitive cross coupling strength between the first resonant cavity and the second resonant cavity can be adjusted.

As a preferred technical scheme, the adjusting screw is a brass piece, and the outer surface of the brass piece is coated with a silver layer.

As a preferred technical solution, the first resonant cavity and the second resonant cavity are both multiple.

As a preferred technical solution, the first resonant cavity and the second resonant cavity have the same size and shape.

As a preferred technical solution, the first resonant cavity and the second resonant cavity are different in size and shape.

The utility model provides a 5G wave filter, capacitive cross coupling structure adopt the mode of coupling muscle, simple structure, and is small, and is with low costs, very big demand that has satisfied the market.

[ description of the drawings ]

To further disclose the specific technical content of the present disclosure, please refer to the attached drawings, wherein:

fig. 1 is a schematic top view of a 5G filter according to an embodiment of the present invention;

FIG. 2 is a partial schematic diagram of a top view of the 5G filter of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the 5G filter of FIG. 1;

fig. 4 is a partially enlarged schematic view of the 5G filter shown in fig. 3.

Description of the symbols:

cavity 10 cover plate 20

First resonant cavity 32 and second resonant cavity 34

First mounting station 322 and second mounting station 342

First resonant beam 42 and second resonant beam 44

Transverse portion 52 of coupling rib 50

Vertical part 54

Adjusting screw 62 nut 64

[ detailed description ] embodiments

Referring to fig. 1 to 4, the present embodiment provides a 5G filter, which includes a cavity 10 with an opening at one end, a cover plate 20 installed at the opening end of the cavity 10, and two resonant cavity groups (see fig. 2) disposed inside the cavity 10. The two resonant cavity groups are symmetrical to each other and are respectively located on two sides of the central line of the cavity 10 in the length direction. Each resonant cavity group comprises a plurality of resonant cavities, the bottom in each resonant cavity is provided with a mounting table, and a resonant column is mounted on the mounting table. In the multiple resonant cavities of each resonant cavity group, a capacitive cross coupling structure is arranged between two non-adjacent resonant cavities which need to realize capacitive cross coupling, so that transmission zero is generated to meet the index requirement of out-of-band rejection of the filter. The two non-adjacent resonant cavities required to achieve capacitive cross-coupling are the first resonant cavity 32 and the second resonant cavity 34, respectively. The mount at the bottom in the first resonant cavity 32 is a first mount 322, and the resonant column mounted to the first mount 322 is a first resonant column 42. The mounting stage at the bottom within the second resonant cavity 34 is a second mounting stage 342 and the resonant column mounted to the second mounting stage 342 is a second resonant column 44.

In this embodiment, each resonator group includes seven resonators, and the seven resonators of the two resonator groups are symmetrical to each other. Of the seven resonant cavities there is a first resonant cavity 32 and a second resonant cavity 34. The two first resonant cavities 32 and the two second resonant cavities 34 of the two resonant cavity groups are respectively positioned on two sides of the central line of the cavity 10 in the length direction. In other embodiments, the number of the resonant cavity groups, the first resonant cavities 32 and the second resonant cavities 34 may be other, and may be set according to practical situations.

The first resonant cavity 32 and the second resonant cavity 34 are the same in size and shape. In other embodiments, the first resonant cavity 32 and the second resonant cavity 34 may not be the same size or shape.

The capacitive cross-coupling structure disposed between the first resonant cavity 32 and the second resonant cavity 34 includes a coupling rib 50, one end of the coupling rib 50 is formed to an outer wall of the first mounting block 322, and the other end thereof extends into the second resonant cavity 34 with a gap from the second resonant pillar 44. Compared with the traditional capacitive cross coupling structure adopting flying rods or copper bars, the structure has the advantages of simple structure, low cost and small size, and can save the cost of the filter and reduce the volume of the filter.

The coupling rib 50, the first mounting platform 322 and the cavity 10 are integrally formed by machining, so that the manufacturing is convenient, and the cost of the filter is further reduced.

In this embodiment, the coupling rib 50 has an L-shape. The coupling rib 50 includes a lateral portion 52 and a vertical portion 54 formed to one end of the lateral portion 52. An end of the lateral portion 52 remote from the upright portion 54 is formed to an outer wall of the first mounting block 322, and an end of the lateral portion 52 forming the upright portion 54 protrudes into the second resonant cavity 34. The vertical portion 54 is located in the second resonant cavity 34 and extends toward the cover plate 20, and a gap is formed between the vertical portion 54 and the second resonant post 44.

The distance between the lateral portion 52 of the coupling rib 50 and the bottom portion inside the cavity 10, the distance between the vertical portion 54 and the second resonant post 44, and the thickness of the coupling rib 50 may be set according to a simulation design.

The strength of the capacitive cross coupling can be adjusted by adjusting the screw 62. As shown in fig. 1, 3 and 4, in particular, a first end of the adjustment screw 62 is located outside the chamber 10 and is mounted to the cover plate 20 by a nut 64, and a second end of the adjustment screw 62 passes through the cover plate 20 and protrudes into the chamber 10. The adjustment screw 62 is located above the lateral portion 52 of the coupling rib 50 and on one side of the vertical portion 54 of the coupling rib 50. The nut 64 and the adjusting screw 62 are rotated to adjust the depth of the adjusting screw 62 extending into the cavity 10, so that the capacitive cross coupling between the first resonant cavity 32 and the second resonant cavity 34 can be adjusted conveniently and simply without disassembling the cover plate 20.

Preferably, the adjusting screw 62 is a brass member, and the outer surface of the brass member is covered with a silver layer, so as to enhance the conductive effect of the adjusting screw 62, thereby reducing the influence of insertion loss.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (9)

1. The utility model provides a 5G filter, includes one end open-ended cavity, installs the apron of cavity open end and set up in inside non-adjacent first resonant cavity and the second resonant cavity of cavity, the bottom in first resonant cavity is equipped with first mount table, first resonance post is installed to first mount table, the bottom in the second resonant cavity is equipped with the second mount table, the second resonance post is installed to the second mount table, be equipped with the capacitive cross-coupling structure between first resonant cavity and the second resonant cavity, its characterized in that, the capacitive cross-coupling structure includes the coupling muscle, the one end of coupling muscle forms the outer wall of first mount table, the other end stretch into in the second resonant cavity and with the clearance has between the second resonance post.

2. The 5G filter of claim 1, wherein the coupling rib is L-shaped.

3. The 5G filter of claim 1, wherein the coupling rib comprises a transverse portion and a vertical portion formed to one end of the transverse portion, the end of the transverse portion away from the vertical portion is formed to an outer wall of the first mounting stage, the end of the transverse portion forming the vertical portion extends into the second resonant cavity, the vertical portion is located in the second resonant cavity and extends in the direction of the cover plate, and a gap is formed between the vertical portion and the second resonant column.

4. The 5G filter of claim 1, wherein the coupling rib, the first mounting platform, and the cavity are integrally formed.

5. The 5G filter of claim 1, further comprising an adjustment screw, a first end of the adjustment screw being located outside the cavity and mounted to the cover plate by a nut, a second end of the adjustment screw passing through the cover plate and extending into the cavity; the adjusting screw rod is positioned above the transverse part of the coupling rib and positioned on one side of the vertical part of the coupling rib; the nut is rotated, and the depth of the adjusting screw rod extending into the cavity can be adjusted through the adjusting screw rod, so that the capacitive cross coupling strength between the first resonant cavity and the second resonant cavity can be adjusted.

6. The 5G filter of claim 5, wherein the adjusting screw is a brass member, and the outer surface of the brass member is coated with a silver layer.

7. The 5G filter of claim 1, wherein the first resonator and the second resonator are both multiple.

8. The 5G filter of claim 1, wherein the first and second resonators are the same size and shape.

9. The 5G filter of claim 1, wherein the first and second resonators are not the same size or shape.

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