CN217334369U - Common-cavity interdigital coupling structure - Google Patents
Common-cavity interdigital coupling structure Download PDFInfo
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- CN217334369U CN217334369U CN202221503032.XU CN202221503032U CN217334369U CN 217334369 U CN217334369 U CN 217334369U CN 202221503032 U CN202221503032 U CN 202221503032U CN 217334369 U CN217334369 U CN 217334369U
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Abstract
The utility model discloses a common chamber interdigital coupling structure, include: the antenna comprises a cavity (11) and a cover plate (12), wherein the cavity comprises a TX resonant cavity, a common resonant cavity and an RX resonant cavity, the common resonant cavity is fixedly connected with the cover plate, the bottom of the common resonant cavity is connected with an SMP connector, and a tap piece (2) is arranged between the common resonator and the SMP connector. The beneficial effects of the utility model are that replace strengthening rib in the past with public syntonizer, greatly reduced the processing degree of difficulty, tuning range is controllable.
Description
Technical Field
The utility model relates to a mobile communication field especially relates to tunable resonator and wave filter.
Background
In a microwave system, a duplexer generally comprises a received signal RX filter and a transmitted signal TX filter, a transmitting end and a receiving end need to be combined at an antenna port, a common resonant cavity which is open-circuited with the ground at the bottom of a cavity and a cover plate is generally added at the position of the traditional combination, the common resonant cavity is called a common cavity for short, the common cavity and the first cavity of the received signal filter need very strong coupling, a reinforcing rib is generally added on a limited window structure, the coupling strength is adjusted by adjusting the height of the reinforcing rib, with the arrival of the 5G era, a signal channel is required to be wider and wider, the product size is smaller and smaller, the reinforcing rib is added in a limited space, and the processing difficulty and the product tuning range are greatly increased.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that current duplexer is more and more little, wants to reach strong coupling altogether, and the more and more difficult processing of strengthening rib provides a cavity-altogether interdigital coupling structure who need not the strengthening rib for this reason.
The technical scheme of the utility model is that: a common-cavity interdigital coupling structure comprising: the antenna comprises a cavity and a cover plate, wherein the cavity comprises a TX resonant cavity, a public resonant cavity and an RX resonant cavity, the public resonant cavity is fixedly connected with the cover plate, the bottom of the public resonant cavity is connected with an SMP connector, and a tap piece is arranged between the public resonant cavity and the SMP connector.
In the above scheme, one end of the tap piece is connected with the tap fastening platform, and the tap fastening platform is located beside the common resonator.
In the above scheme, a TX resonant base fixedly connected to the bottom wall of the cavity is arranged in the TX resonant cavity, and a TX resonator is arranged on the TX resonant base.
In the above scheme, an RX resonant base fixedly connected to the bottom wall of the cavity is arranged in the RX resonant cavity, and an RX resonator is arranged on the RX resonant base.
In the above scheme, the cover plate is provided with tuning screws respectively matched with the TX resonant cavity and the RX resonant cavity.
In the above scheme, the cover plate is provided with coupling screws respectively positioned between the TX resonant cavity and the common resonant cavity and between the common resonant cavity and the RX resonant cavity.
The beneficial effects of the utility model are that replace strengthening rib in the past with public syntonizer, greatly reduced the processing degree of difficulty, tuning range is controllable.
Drawings
Fig. 1 is an exploded schematic view of the present invention;
in the figure, 1, an SMP connector, 2, a tap piece, 3, a tuning screw, 4, a coupling screw, 5, a TX resonator, 6, an RX resonator, 7, a TX resonance bottom platform, 8, an RX resonance bottom platform, 9, a common resonator, 10, a tap fastening platform, 11, a cavity, 12 and a cover plate.
Detailed Description
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments of the ordinary skilled person in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the utility model comprises: the antenna comprises a cavity 11 and a cover plate 12, wherein the cavity comprises a TX resonant cavity, a common resonant cavity and an RX resonant cavity, the common resonant cavity is located between the TX resonant cavity and the RX resonant cavity, a TX resonant base 7 fixedly connected to the bottom wall of the cavity is arranged in the TX resonant cavity, a TX resonator 5 is arranged on the TX resonant base, an RX resonant base 8 fixedly connected to the bottom wall of the cavity is arranged in the RX resonant cavity, an RX resonator 6 is arranged on the RX resonant base, a common resonator 9 fixedly connected to the cover plate is arranged in the common resonant cavity, the bottom of the common resonant cavity is connected with an SMP connector 1, and a tap piece 2 is arranged between the common resonator and the SMP connector. The tap pieces may be connected at one end to a tap fastening station 10 located beside the common resonator, or may be connected by other forms of connection.
In order to tune the TX resonator 5 and the RX resonator 6, the cover plate is provided with tuning screws 3 respectively cooperating with the TX resonator and the RX resonator.
In order to adjust the coupling degree between the TX resonant cavity and the common resonant cavity, a coupling screw rod 4 positioned between the TX resonant cavity and the common resonant cavity is arranged on the cover plate, and in order to adjust the coupling degree between the RX resonant cavity and the common resonant cavity, the coupling screw rod 4 positioned between the RX resonant cavity and the common resonant cavity is arranged on the cover plate, namely, 2 coupling screw rods are arranged.
The common resonator in the present invention may be cylindrical as shown in the figure, or may be rectangular. The cavity is made of metal. The common resonator is an interdigital coupler and can be used in cases where coupling is strong.
The utility model discloses an installation method as follows: first, the SMP connector 1 is fastened to the metal cavity 11, the tap piece 2 is fastened to the tap fastening base 10 with screws, the tuning screw 3 is fixed to the cover plate 12, the coupling screw 4 is fixed to the cover plate 12, the TX resonator 5 is fastened to the TX resonance base 7 with screws, the RX resonator 6 is fastened to the RX resonance base 8 with screws, the common resonator 9 is fastened to the cover plate with screws, and the cover plate is fastened to the metal cavity with screws. The strength of the common-end tap is changed by adjusting the distance between the common resonator and the tap piece and the size of the tap piece.
Claims (6)
1. A common-cavity interdigital coupling structure comprising: cavity (11) and apron (12), including TX resonant cavity, public resonant cavity and RX resonant cavity in the cavity, characterized by: a public resonator fixedly connected with the cover plate is arranged in the public resonant cavity, the bottom of the public resonant cavity is connected with an SMP connector, and a tap piece (2) is arranged between the public resonator and the SMP connector.
2. The common-cavity interdigital coupling structure of claim 1, wherein: one end of the tap piece (2) is connected with a tap fastening platform (10), and the tap fastening platform is positioned beside the common resonator.
3. The common-cavity interdigital coupling structure of claim 1, wherein: and a TX resonance base table fixedly connected to the bottom wall of the cavity is arranged in the TX resonance cavity, and a TX resonator is arranged on the TX resonance base table.
4. The common-cavity interdigital coupling structure of claim 1, wherein: an RX resonance bottom table fixedly connected to the bottom wall of the cavity is arranged in the RX resonant cavity, and an RX resonator is arranged on the RX resonance bottom table.
5. The common-cavity interdigital coupling structure of claim 1, wherein: and the cover plate is provided with a tuning screw rod (3) which is respectively matched with the TX resonant cavity and the RX resonant cavity.
6. The co-cavity interdigital coupling structure of claim 1, wherein: and coupling screws (4) respectively positioned between the TX resonant cavity and the common resonant cavity and between the common resonant cavity and the RX resonant cavity are arranged on the cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221503032.XU CN217334369U (en) | 2022-06-16 | 2022-06-16 | Common-cavity interdigital coupling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221503032.XU CN217334369U (en) | 2022-06-16 | 2022-06-16 | Common-cavity interdigital coupling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217334369U true CN217334369U (en) | 2022-08-30 |
Family
ID=82988306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221503032.XU Active CN217334369U (en) | 2022-06-16 | 2022-06-16 | Common-cavity interdigital coupling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217334369U (en) |
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2022
- 2022-06-16 CN CN202221503032.XU patent/CN217334369U/en active Active
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