CN114284663A - 5G band elimination cavity filter - Google Patents
5G band elimination cavity filter Download PDFInfo
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- CN114284663A CN114284663A CN202210123552.6A CN202210123552A CN114284663A CN 114284663 A CN114284663 A CN 114284663A CN 202210123552 A CN202210123552 A CN 202210123552A CN 114284663 A CN114284663 A CN 114284663A
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- 230000008030 elimination Effects 0.000 title claims description 5
- 238000003379 elimination reaction Methods 0.000 title claims description 5
- 230000008878 coupling Effects 0.000 claims abstract description 51
- 238000010168 coupling process Methods 0.000 claims abstract description 51
- 238000005859 coupling reaction Methods 0.000 claims abstract description 51
- 238000005452 bending Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The invention relates to a 5G band-stop cavity filter, which comprises a cavity and connectors connected to two ends of the cavity; the cavity comprises an accommodating cavity, a cover plate fixed on the accommodating cavity and an adjusting screw fixed on the cover plate; the accommodating cavity is internally provided with a plurality of resonant cavities, a plurality of resonators positioned in the resonant cavities, a supporting seat used for supporting the resonators, a strip-shaped sheet with two ends connected with a connector and side edges adjacent to each resonator and a safety interval kept, and a groove used for fixing the strip-shaped sheet; the resonator is not contacted with the cover plate, the side wall of the cavity, the groove, the strip-shaped sheet and the adjusting screw rod; the strip-shaped sheet is horizontally fixed on the groove in an insulating mode, is slightly lower than the resonator, and is not in contact with the cover plate, the side wall of the cavity, the groove, the supporting seat, the resonator and the adjusting screw rod. According to the invention, the plurality of resonant cavities and the plurality of resonators are arranged in the cavity, and the surrounding strip-shaped sheets surrounding the resonators and the resonant cavities are arranged, so that the coupling quantity is increased, a certain safety interval is kept, and the stability is improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of filters, in particular to a 5G band-stop cavity filter.
[ background of the invention ]
With the rapid development of 5G communication technology, the spectrum resource is increasingly tense, and the requirement for inhibiting the band-stop 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 band-pass filter mode under most conditions. However, under the same index requirement, the size of the band-pass filter is more than 30% larger than that of the band-stop filter. Taking radio and television 700M as an example, to realize the transceiving of 5G 700M signals, a base station duplexer is adopted to select the frequency of 700M uplink and downlink signals and has a certain transceiving inhibition isolation requirement. The mode designed into the band elimination filter can realize the requirements of isolation and inhibition of the transmitting and receiving signals by using the band elimination filter. Generally, the traditional band-stop cavity filter is realized by adopting a transmission line coupling mode, but the mode cannot generate larger coupling amount, if the larger coupling amount needs to be realized, the transmission line needs to be close to a resonant column, so that the safety distance does not exist, and the performance is unstable.
Therefore, there is a need to provide a band-stop cavity filter with a novel structure, which can generate a high coupling amount and has stable performance, and can meet the requirements of a 5G communication network.
[ summary of the invention ]
The invention aims to provide a 5G band-stop cavity filter which can generate higher coupling quantity and has stable performance and can meet the requirements of a 5G communication network.
In order to solve the technical problem, the invention provides a 5G band-stop cavity filter, which comprises a cavity and connectors connected to two ends of the cavity; the cavity comprises an accommodating cavity, a cover plate fixed on the accommodating cavity and an adjusting screw fixed on the cover plate; the accommodating cavity is internally provided with a plurality of resonant cavities, a plurality of resonators positioned in the resonant cavities, a supporting seat used for supporting the resonators, a strip-shaped sheet with two ends connected with the connector and side edges adjacent to each resonator and a safety interval kept, and a groove used for fixing the strip-shaped sheet; the resonator is not contacted with the cover plate, the side wall of the cavity, the groove, the strip-shaped sheet and the adjusting screw rod; the strip-shaped sheet is horizontally fixed on the groove in an insulating mode, is slightly lower than the resonator, and is not in contact with the cover plate, the side wall of the cavity, the groove, the supporting seat, the resonator and the adjusting screw rod.
Furthermore, the resonant cavities are semi-closed structures, and the plurality of resonant cavities are arranged in the accommodating cavity in a linear type side by side mode.
Furthermore, the strip-shaped sheet is of an integrated structure and comprises a coupling sheet close to the resonator, a connecting sheet far away from the resonator and connecting two adjacent coupling sheets, and connecting rods arranged at two ends of the strip-shaped sheet and connecting the connector and the coupling sheets.
Furthermore, the side of the coupling piece adjacent to the resonator is one or more of a straight side, an 1/8 circular arc side, a 1/4 circular arc side and a semi-circular arc side.
Furthermore, the coupling sheet is positioned in the resonant cavity, keeps a safe distance with the side wall of the cavity and the resonator, and is fixed on the groove through an insulating medium.
Furthermore, the connecting sheet far away from the resonator is of a U-shaped horizontal bending structure.
Furthermore, the connecting sheet is positioned in the connecting channel of two adjacent resonant cavities, keeps a safe distance with the side wall of the cavity and is fixed on the groove through an insulating medium.
Furthermore, the connecting rod is an L-shaped bending structure which is vertically bent downwards from one end of the coupling piece.
Furthermore, the supporting seat is a boss-shaped structure which protrudes upwards from the bottom of the resonant cavity, a mounting hole is formed in the middle of the supporting seat, and the protruding height of the supporting seat is lower than that of the groove.
Furthermore, the resonator is a unitary structure and includes a resonant column and a resonant disk extending horizontally outward from a top end of the resonant column.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the plurality of resonant cavities and the plurality of resonators are arranged in the cavity, and the surrounding strip sheets surrounding the resonators and the resonant cavities are arranged, so that a certain safety interval is kept while the coupling amount is increased and the cavity volume is reduced, the stability is improved, and the requirement of a 5G communication network can be met.
[ description of the drawings ]
Fig. 1 is a top view of the internal structure of the cavity of a 5G band-stop cavity filter according to an embodiment of the present invention;
FIG. 2 is a sectional view of a cavity structure of a 5G band-stop cavity filter according to an embodiment of the invention;
fig. 3 is an exploded structural view of a 5G band-stop cavity filter according to an embodiment of the invention;
fig. 4 is a structure diagram of a strip-shaped sheet of a 5G band-stop cavity filter according to an embodiment of the present invention.
Description of reference numerals: 1. a resonator; 2. an accommodating chamber; 3. a strip-shaped sheet; 4. an insulating spacer; 5. an insulating screw; 6. a second adjusting screw; 7. a connector; 8. a cover plate; 9. a resonant cavity; 10. a cavity side wall; 11. a resonant column; 12. a resonant disk; 13. a first adjusting screw; 14. a supporting seat; 15. a groove; 16. a top rod; 17. facing each other; 31. a connecting rod; 32. a second fixing hole; 33. connecting sheets; 34. a first fixing hole; 35. a coupling piece; 36. straight side edges; 37.1/4 circular arc side edges; 38. a semicircular arc-shaped side edge; 39.1/8 circular arc side edge.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiments of the present invention, unless otherwise specified, the use of the terms of orientation such as "upper, lower, left, right, lateral, vertical" generally means upper, lower, left, right, lateral, vertical in the drawings, and "inner, outer" means inner, outer with respect to the outline of the component.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that the operations may be performed in other sequences than those described.
As shown in fig. 1, fig. 2, and fig. 3, the 5G band-stop cavity filter according to the embodiment of the present invention includes a cavity and connectors 7 connected to two ends of the cavity. Wherein, the cavity is including holding chamber 2, fixing apron 8 and the adjusting screw who fixes on apron 8 on holding chamber 2. A plurality of resonant cavities 9 are provided in the accommodating cavity 2, and a plurality of resonators 1 are provided in the resonant cavities 9 and a support base 14 for supporting the resonators 1, and a strip 3 is connected to the connectors 7 at both ends and is laterally adjacent to each resonator 1 with a safety space maintained, and a groove 15 (shown by hatching in fig. 1) for fixing the strip 3. The strip-shaped sheet 3 is horizontally insulated and fixed on the groove 15, is slightly lower than the resonator 1 in the whole height, and is not contacted with the cover plate 8, the cavity side wall 10, the groove 15, the supporting seat 14, the resonator 1 and the adjusting screw. At the same time, the resonator 1 is not in contact with the cover plate 8, the cavity side wall 10, the groove 15, the strip 3 and the adjusting screw.
Specifically, the accommodating cavity 2 is integrally in the shape of a rectangular cylinder and made of a metal material, and a plurality of linear resonant cavities 9 arranged side by side are arranged in the accommodating cavity along the length direction. The shape and size of each resonant cavity 9 are different but approximately the same, and are all semi-closed structures with one side opening. A support base 14 and a resonator 1 fixed on the support base 14 are provided at the middle position of each resonant cavity 9.
In this embodiment, the supporting seat 14 is a boss-shaped structure protruding vertically upward from the bottom of the cavity 9, a mounting hole is formed in the middle of the supporting seat, and the height h1 of the protrusion of the supporting seat 14 is lower than the height h2 of the groove 15. The resonator 1 is a unitary structure including a resonant column 11 and a resonant disk 12 extending horizontally outward from the top end of the resonant column 11.
The resonator 1 is fixed on the supporting seat 14 through the matching of the metal screw and the mounting hole, after the resonator 1 is fixed on the supporting seat 14, the height of the resonator is slightly higher than the height of the strip-shaped sheet 3 fixed on the groove 15, and the height difference between the two is a safe distance. The groove 15 is arranged at the opening of the resonant cavity 9 and the connecting channel of the adjacent resonant cavity 9, is of an integrated structure, and is provided with a mounting hole for fixing the strip-shaped sheet 3.
A first adjusting screw 13 is provided on the cover plate 8, which extends vertically downward into the resonant cavity 9, is located directly above the resonator 1 and is not in contact with the resonator 1. The first adjusting screw 13 may be a self-locking screw or a general screw for adjusting the resonance frequency.
In the drawings of the present embodiment, five resonant cavities 9 are shown in a U-shaped configuration. Each cavity 9 is approximately the same size, and the cavity side wall 10 is curved or linear. And the side wall 10 of the cavity is not contacted with the supporting seat 14, the resonator 1 and the strip-shaped sheet 3 in the cavity, and is not contacted with the first adjusting screw 13 and the second adjusting screw 6 which are fixed on the cover plate 8, and a certain safety interval is kept.
As shown in fig. 4 again, strip-shaped piece 3 of the present embodiment is an integrated structure including coupling piece 35 adjacent to resonator 1, connection piece 33 distant from resonator 1 and connecting adjacent two coupling pieces 35, and connection bar 31 provided at both ends of strip-shaped piece 3 and connecting connectors 7 and coupling pieces 35.
Specifically, the coupling piece 35 is located in the cavity 9 and is spaced from the cavity sidewall 10 and the cavity 1, and a first fixing hole 34 is formed thereon for fixing the coupling piece 35 to the groove 15 via the insulating spacer 4 and the insulating screw 5. The sides of the coupling plate 35 adjacent to the resonator 1 are a straight side 36, an 1/8 circular arc side 39, a 1/4 circular arc side 37 and a semi-circular arc side 38, respectively. Specifically, the side of the first coupling plate adjacent to the first resonator is a linear side 36, the side of the second coupling plate adjacent to the second resonator is an 1/4 circular arc-shaped side 37, the side of the third coupling plate adjacent to the third resonator is a semi-circular arc-shaped side 38, the side of the fourth coupling plate adjacent to the fourth resonator is also an 1/4 circular arc-shaped side 37, and the side of the fifth coupling plate adjacent to the fifth resonator is an 1/8 circular arc-shaped side 39. In addition, the sides of the adjacent resonators of each coupling piece can be set to be in a uniform shape or different shapes according to actual conditions.
As shown in fig. 1, in the embodiment of the present invention, a certain safety distance L1 exists between the coupling tab 35 and the resonant pillar 11 of the resonator 1, and a certain safety distance L2 also exists between the coupling tab and the cavity sidewall 10. In addition, the coupling plate 35 and the resonant disk 12 of the resonator 1 have a mutually facing surface 17 (shown by hatching in fig. 1) in the vertical direction, and when current is applied, an electric coupling is formed in the space of the mutually facing surface 17 to cancel the magnetic coupling generated in the space between the resonator 1 and the cavity side wall 10. The different shapes of the sides of the coupling plate 35 cause the areas of the mutually facing surfaces 17 to be different, and thus the amount of coupling generated by each resonator 9 is different.
In the embodiment, in order to enhance the electric coupling strength and minimize the volume of the cavity, the connecting piece 33 of the strip-shaped piece 3 far away from the resonator is designed into a U-shaped horizontal bending structure, and the connecting piece 33 is arranged in the connecting channel of two adjacent resonant cavities 9 and keeps a certain safe distance with the side wall 10 of the cavity.
As shown in fig. 1, the connecting piece 33 and the cavity side wall 10 have safety distances L3, L4, L5 and L6 in the front, rear, left and right directions. In the embodiment, the safety distances L1, L2, L3, L4, L5 and L6 may be equal in width or different in width, and specific values may be set according to actual situations. In this embodiment, 4U-shaped connecting pieces 33 are provided on the strip-shaped piece 3, and each connecting piece 33 is provided with a second fixing hole 32 for fixing the connecting piece 33 on the groove 15 through the insulating spacer 4 and the insulating screw 5 so that the strip-shaped piece 3 does not contact the groove 15.
In the present embodiment, the connecting rod 31 has an L-shaped bent structure bent vertically downward from one end of the coupling piece 35. One end of the connecting rod 31 is connected with the mandril 16 of the connector 7 by welding, and the other end is connected with the coupling piece 35. At the same time, the connecting rod 31 also maintains a certain safety distance from the chamber sidewall 10.
When the cavity filter is energized, magnetic coupling occurs in the space between the resonator 1 and the cavity side wall 10, and electric coupling occurs in the space between the resonator plate 12 of the resonator 1 and the coupling piece 35. The surrounding strip sheet of the embodiment not only increases the spacing space between the strip sheet 3 and the cavity side wall 10 and the resonator 1, but also improves the coupling amount; moreover, the volume of the cavity is reduced by designing the strip-shaped sheet with the bending structure, the coupling amount and a certain safety distance can be kept, the stability is improved, and the requirement of a 5G communication network can be met.
In order to further facilitate the adjustment of the resonant frequency, as shown in fig. 2 and 3, in this embodiment, a second adjusting screw 6 is further provided on the cover plate 8 and extends vertically downward into the resonant cavity 9. The second adjusting screw 6 is located right above the coupling piece 35 and does not contact the coupling piece 35. Specifically, the second adjusting screw 6 is disposed right above the left and right sides of the first fixing hole 34 of each coupling piece 35. The second adjusting screw 6 may be a self-locking screw or a normal screw.
In summary, the cavity is provided with the plurality of resonant cavities, the plurality of resonators and the surrounding strip sheets surrounding the resonators and the resonant cavities, so that the coupling amount is increased, the volume of the cavity is reduced, a certain safety interval is kept, the stability is improved, and the requirements of a 5G communication network can be met.
The above examples merely represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications, such as combinations of different features in various embodiments, may be made without departing from the spirit of the invention, and these are within the scope of the invention.
Claims (10)
1. The utility model provides a 5G band elimination cavity filter which characterized in that: comprises a cavity and connectors connected with two ends of the cavity; the cavity comprises an accommodating cavity, a cover plate fixed on the accommodating cavity and an adjusting screw fixed on the cover plate; the accommodating cavity is internally provided with a plurality of resonant cavities, a plurality of resonators positioned in the resonant cavities, a supporting seat used for supporting the resonators, a strip-shaped sheet with two ends connected with the connector and side edges adjacent to each resonator and a safety interval kept, and a groove used for fixing the strip-shaped sheet; the resonator is not contacted with the cover plate, the side wall of the cavity, the groove, the strip-shaped sheet and the adjusting screw rod; the strip-shaped sheet is horizontally fixed on the groove in an insulating mode, is slightly lower than the resonator, and is not in contact with the cover plate, the side wall of the cavity, the groove, the supporting seat, the resonator and the adjusting screw rod.
2. The 5G band-stop cavity filter of claim 1, wherein: the resonant cavities are of semi-closed structures, and the resonant cavities are arranged in the accommodating cavity in a linear type side by side mode.
3. The 5G band-stop cavity filter of claim 1, wherein: the strip-shaped sheet is of an integrated structure and comprises a coupling sheet close to the resonator, a connecting sheet far away from the resonator and connected with two adjacent coupling sheets, and connecting rods arranged at two ends of the strip-shaped sheet and connected with the connector and the coupling sheets.
4. The 5G band-stop cavity filter of claim 3, wherein: the side edge of the coupling piece adjacent to the resonator is one or more of a linear side edge, an 1/8 circular arc side edge, a 1/4 circular arc side edge and a semi-circular arc side edge.
5. The 5G band-stop cavity filter of claim 4, wherein: the coupling piece is positioned in the resonant cavity, keeps a safe distance with the side wall of the cavity and the resonator, and is fixed on the groove through an insulating medium.
6. The 5G band-stop cavity filter of claim 3, wherein: the connecting piece far away from the resonator is of a U-shaped horizontal bending structure.
7. The 5G band-stop cavity filter of claim 6, wherein: the connecting sheet is positioned in a connecting channel of two adjacent resonant cavities, keeps a safe distance with the side wall of the cavity and is fixed on the groove through an insulating medium.
8. The 5G band-stop cavity filter of claim 3, wherein: the connecting rod is an L-shaped bending structure which is vertically bent downwards from one end of the coupling piece.
9. The 5G band-stop cavity filter of claim 2, wherein: the supporting seat is a boss-shaped structure protruding upwards from the bottom of the resonant cavity, a mounting hole is formed in the middle of the supporting seat, and the height of the protruding supporting seat is lower than that of the groove.
10. The 5G band-stop cavity filter of claim 1, wherein: the resonator is of an integrated structure and comprises a resonance column and a resonance disc extending outwards from the top end of the resonance column along the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210123552.6A CN114284663A (en) | 2022-02-10 | 2022-02-10 | 5G band elimination cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210123552.6A CN114284663A (en) | 2022-02-10 | 2022-02-10 | 5G band elimination cavity filter |
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| CN114284663A true CN114284663A (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210123552.6A Pending CN114284663A (en) | 2022-02-10 | 2022-02-10 | 5G band elimination cavity filter |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001185906A (en) * | 1999-12-01 | 2001-07-06 | Telwave Inc | Symmetrical ceramic resonator and band-pass filter using same |
| CN106602191A (en) * | 2016-12-14 | 2017-04-26 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and the communication cavity component thereof |
| CN107046157A (en) * | 2017-01-22 | 2017-08-15 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| CN206422198U (en) * | 2017-01-26 | 2017-08-18 | 合肥博仑微波器件有限公司 | A kind of bandstop filter |
| CN209571531U (en) * | 2019-03-14 | 2019-11-01 | 康普公司意大利有限责任公司 | Band stop filter, transmission line for band stop filter, and multiplexer |
-
2022
- 2022-02-10 CN CN202210123552.6A patent/CN114284663A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001185906A (en) * | 1999-12-01 | 2001-07-06 | Telwave Inc | Symmetrical ceramic resonator and band-pass filter using same |
| CN106602191A (en) * | 2016-12-14 | 2017-04-26 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and the communication cavity component thereof |
| CN107046157A (en) * | 2017-01-22 | 2017-08-15 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| CN206422198U (en) * | 2017-01-26 | 2017-08-18 | 合肥博仑微波器件有限公司 | A kind of bandstop filter |
| CN209571531U (en) * | 2019-03-14 | 2019-11-01 | 康普公司意大利有限责任公司 | Band stop filter, transmission line for band stop filter, and multiplexer |
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