CN207559026U - Cavity resonator structure and cavity body filter - Google Patents
Cavity resonator structure and cavity body filter Download PDFInfo
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- CN207559026U CN207559026U CN201721423043.6U CN201721423043U CN207559026U CN 207559026 U CN207559026 U CN 207559026U CN 201721423043 U CN201721423043 U CN 201721423043U CN 207559026 U CN207559026 U CN 207559026U
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- cavity
- resonator structure
- resonant rod
- cavity resonator
- insulating layer
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Abstract
The utility model provides a kind of cavity resonator structure and cavity body filter.The cavity resonator structure includes cavity, cover board, resonant rod and tuning screw, wherein, the resonant rod is fixed in the cavity, the cover plate lid is set on the cavity, and the tuning screw is spirally connected with the cover board and bottom end passes through the cover board and is located at least one of the top surface of the resonant rod and the surface of bottom end of the tuning screw in the cavity and is equipped with insulating layer.The cavity body filter includes above-mentioned cavity resonator structure.Thereby, the utility model considerably increases the power capacity of cavity resonator structure and cavity body filter in itself while can reach required performance indicator, and improves third order intermodulation problem.
Description
Technical field
The utility model is related to communication transmission technology field, more particularly, to a kind of cavity resonator structure and cavity body filter.
Background technology
Cavity body filter, duplexer, combiner contribute to the communications fields such as radio frequency, microwave and carry out signal transmission and filtering
Device.As shown in Figure 1, existing cavity body filter, duplexer, combiner are interior equipped with resonant rod in the cavity 11 of its resonator 10
13, in being equipped with the tuning screw 14 that extends into cavity 11 on its cover board 12, go deep into cavity 11 by adjusting tuning screw 14
Depth adjust the resonant frequency of cavity 11, and by adjusting the stiffness of coupling between the resonant frequency of multiple cavities and cavity
Form desired working characteristics.However, these cavitys, cover board, resonant rod and tuning screw are made of metal material, and
Electric current can be generated, so causes between resonant rod and cover board, strike sparks in any case between screw rod and resonant rod, that is to say, that
Electric discharge phenomena are generated, so as to influence the performance of entire communication system.
Utility model content
The technical problem to be solved by the present invention is to for deficiencies of the prior art, provide a kind of energy
It enough improves power capacity and improves the cavity resonator structure and cavity body filter of intermodulation issues.
Technical solution is to provide a kind of cavity resonator structure used by the utility model solves its technical problem, including chamber
Body, cover board, resonant rod and tuning screw, wherein, the resonant rod is fixed in the cavity, and the cover plate lid is set on the chamber
On body, the tuning screw is spirally connected with the cover board and bottom end passes through the cover board and is located in the cavity, the resonant rod
At least one of top surface and the surface of bottom end of the tuning screw are equipped with insulating layer.
Preferably, the top surface of the resonant rod and the surface of the bottom end of the tuning screw are equipped with insulating layer.
Preferably, the top of the resonant rod is equipped with flange face, the insulating layer is set on the flange face.
Preferably, the insulating layer is formed by plastics or spray painting.
Preferably, the insulating layer is formed by polytetrafluoroethylene (PTFE).
Preferably, the insulating layer is made of by spraying process or clad forming process.
Preferably, being equipped with boss in the cavity, the resonant rod is fixed on the boss.
Preferably, the tuning screw is extended into the resonant rod.
The utility model also provides a kind of cavity body filter for including above-mentioned cavity resonator structure.
The utility model sets insulating layer on the resonant rod and/or tuning screw in cavity resonator structure, by resonant rod
It is isolated with cover board and/or isolates tuning screw and resonant rod, come the electric discharge phenomena for avoiding its mutual, so in energy
The power capacity of cavity resonator structure and cavity body filter in itself is considerably increased while enough reaching required performance indicator, and is changed
Kind third order intermodulation problem.
Description of the drawings
Fig. 1 is the partial cutaway schematic view of existing cavity resonator structure.
Fig. 2 is the partial cutaway schematic view of the cavity resonator structure of the utility model cavity body filter.
Specific embodiment
The cavity resonator structure of the utility model can be used in the devices such as cavity body filter, duplexer, combiner, herein only with
It illustrates, but is not limited thereto for cavity body filter.
As shown in Fig. 2, the cavity resonator structure 20 of the cavity body filter of the utility model includes cavity 21, cover board 22, resonance
Bar 23 and tuning screw 24.Wherein, cover board 22 is equipped with boss 211, resonant rod 23 for being covered on cavity 21 in the cavity 21
It is fixedly installed on the boss 211, tuning screw 24 can be spirally connected with cover board 22 so that its bottom end 241 passes through cover board 22 and is located at chamber
In body 21, the resonant frequency of cavity 21 is adjusted in the depth for going deep into cavity 21 by adjusting tuning screw 24.
In the utility model, the top surface 231 of resonant rod 23 is equipped with the first insulating layer 232, first insulating layer 232
Resonant rod 23 and cover board 22 are isolated, avoid generating electric discharge phenomena therebetween.In the present embodiment, 23 top of resonant rod is set
There is flange face, therefore insulating layer 232 is set on the flange face 231.Second insulating layer 242 is then provided on tuning screw 24, it should
Second insulating layer 242 is located at tuning screw 24 and extends on the surface of bottom end 241 of cavity 21, by tuning screw 24 with it is humorous
The bar 23 that shakes is isolated, and avoids generating electric discharge phenomena therebetween.Refer in this way, cavity resonator structure 20 can either reach required performance
Mark, and the power capacity of product itself is considerably increased, it can equally improve third order intermodulation problem.
Further, the first insulating layer 232 and second insulating layer 242 can be by plastics such as PTFE (polytetrafluoroethylene (PTFE)), sprays
The insulating materials such as paint are made, but not limited to this, play the role of being effectively isolated electric current as long as can ensure that；And first insulating layer
232 and second insulating layer 242 can be made up of spraying process or clad forming process, in order to realize.
In addition, in the present embodiment, cavity resonator structure 20 extends into the structure of resonant rod 23 using tuning screw 24, but not
It is limited to this, other forms also can be used in cavity resonator structure, such as the bottom end of tuning screw is oppositely arranged with resonant rod top surface,
As long as at this point, accordingly the installation position of adjustment insulating layer or also can the first insulating layer, second insulating layer select a setting, will
Resonant rod is isolated with cover board and/or isolates tuning screw and resonant rod, you can it is avoided to generate electric discharge between each other existing
As.
In conclusion the utility model sets insulating layer on the resonant rod and/or tuning screw in cavity resonator structure, with
Resonant rod with cover board is isolated and/or isolates tuning screw and resonant rod, come the electric discharge phenomena for avoiding its mutual,
The power of cavity resonator structure and cavity body filter in itself is so considerably increased while can reach required performance indicator
Capacity, and improve third order intermodulation problem.
Claims (9)
1. a kind of cavity resonator structure, including cavity, cover board, resonant rod and tuning screw, wherein, the resonant rod is fixed on described
In cavity, the cover plate lid is set on the cavity, the tuning screw and the cover board are spirally connected and bottom end passes through the cover board and
In the cavity, which is characterized in that in the surface of the bottom end of the top surface of the resonant rod and the tuning screw
At least one is equipped with insulating layer.
2. cavity resonator structure as described in claim 1, which is characterized in that the top surface of the resonant rod and the tuning spiral shell
The surface of the bottom end of bar is equipped with insulating layer.
3. cavity resonator structure as described in claim 1, which is characterized in that the top of the resonant rod is equipped with flange face, described
Insulating layer is set on the flange face.
4. the cavity resonator structure as described in claim 1,2 or 3, which is characterized in that the insulating layer is formed by plastics or spray painting.
5. the cavity resonator structure as described in claim 1,2 or 3, which is characterized in that the insulating layer is formed by polytetrafluoroethylene (PTFE).
6. cavity resonator structure as claimed in claim 4, which is characterized in that the insulating layer is by spraying process or is overmolding to
Type technique is made.
7. cavity resonator structure as described in claim 1, which is characterized in that boss is equipped in the cavity, the resonant rod is consolidated
Due on the boss.
8. cavity resonator structure as described in claim 1, which is characterized in that the tuning screw extends into the resonant rod
In.
9. a kind of cavity body filter for including cavity resonator structure described in any item of the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721423043.6U CN207559026U (en) | 2017-10-31 | 2017-10-31 | Cavity resonator structure and cavity body filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721423043.6U CN207559026U (en) | 2017-10-31 | 2017-10-31 | Cavity resonator structure and cavity body filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207559026U true CN207559026U (en) | 2018-06-29 |
Family
ID=62675061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721423043.6U Active CN207559026U (en) | 2017-10-31 | 2017-10-31 | Cavity resonator structure and cavity body filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207559026U (en) |
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2017
- 2017-10-31 CN CN201721423043.6U patent/CN207559026U/en active Active
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