CN203910948U - Cavity coupling structure - Google Patents
Cavity coupling structure Download PDFInfo
- Publication number
- CN203910948U CN203910948U CN201420275616.5U CN201420275616U CN203910948U CN 203910948 U CN203910948 U CN 203910948U CN 201420275616 U CN201420275616 U CN 201420275616U CN 203910948 U CN203910948 U CN 203910948U
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- Prior art keywords
- cavity
- conducting piece
- resonant
- regulating part
- resonant column
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Abstract
The utility model discloses a cavity coupling structure comprising a cavity equipped with a cover plate, a connector installed on the sidewall of the cavity and communicated with the cavity, at least one resonator, a conduction member, and at least one adjusting member, wherein the at least one resonator, the conduction member, and the at least one adjusting member are disposed inside the cavity. Each resonator comprises a resonant cavity and a resonant column fixed inside the resonant cavity. One side of the conduction member is electrically connected with the connector inside the cavity. The other side of the conduction member is adjacent to and electrically connected with the resonant columns of the resonators. One side, opposite to the resonant columns, of the conduction member is equipped with the adjusting members penetrating the cover plate and entering the resonant cavities corresponding to the resonant columns. The axial movement of the adjusting members cause change in a relative positional relation between the conduction member and the resonant columns. By means of the above manner, the coupling strength between the conduction member and the resonant columns can be adjusted such that the bandwidth of the filtering port of the cavity coupling structure is further adjusted.
Description
Technical field
The utility model relates to filter field, particularly relates to a kind of cavity coupled structure.
Background technology
In present mobile communication technology, microwave radio device is important part.Filter is as a kind of basic radio frequency unit, and a series of indexs such as its insertion loss, Out-of-band rejection, passive intermodulation and power capacity have important impact for the performance of complete machine.Traditional metal coaxial cavity filter is due to the reason of own loss, in the situation that limiting cavity size, cannot obtain very high quality factor (Q value), cause the indexs such as Out-of-band rejection and insertion loss to be subject to certain restrictions, and the link such as the silver-plated processing in metal surface also can produce certain impact to passive intermodulation index.
Dielectric filter has high Q value and stable full temperature characteristics, and this feature improves the performance of dielectric filter aspect inhibition and loss.
It is different from metal coaxial cavity that the electromagnetic field of TE mould dielectric resonator distributes, the characteristic of its high inhibition, filter with low insertion loss needs the precisely port of wave filter bandwidth of coupling, the port bandwidth of existing TE mould dielectric filter can not be debugged conventionally, how the port of wave filter bandwidth of accurate coupling is provided, and is one of TE mould dielectric filter problem demanding prompt solution.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of cavity coupled structure, can change the relative position relation between conducting piece and resonant column, to regulate the stiffness of coupling between conducting piece and resonant column, and then regulate the bandwidth of cavity coupled structure filtering port.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of cavity coupled structure is provided, comprise the cavity that is provided with cover plate, the joint that is installed on cavity wall and is communicated with cavity, and be located at least one resonator, conducting piece and at least one regulating part in cavity, each resonator comprises resonant cavity and is fixed on the resonant column in resonant cavity; One side of conducting piece is electrically connected with the joint that is positioned at cavity, opposite side near the resonant column of resonator to be electrically connected with it; Conducting piece, back to a side of resonant column, is provided with and runs through cover plate and go deep into the regulating part of the corresponding resonant cavity of resonant column, and the axial motion of regulating part causes the relative position relation between conducting piece and resonant column to change.
Wherein, regulating part is inserted resonant cavity part and is had respectively different thickness sizes along its axial diverse location.
Wherein, regulating part insert resonant cavity partly also can be tapered.
Wherein, regulating part is inserted resonant cavity and partly also can be axially arranged with the different a plurality of cascade rings of radial dimension along it.
Wherein, conducting piece is craspedodrome wire or curve wire, for signal transmission between corresponding resonant column and joint.
Wherein, conducting piece is wall scroll wire part, or the combination single line part for consisting of multistage wall scroll wire part.
Wherein, conducting piece with and the axis of the resonant column of its electric connection perpendicular, and with the parallel magnetic line of force with cutting resonant column of direction of an electric field of this resonant column.
Wherein, regulating part, for insulation material, is threaded with cover plate.
Wherein, cavity is provided with for supporting the supporting construction of conducting piece.
Wherein, regulating part and conducting piece are inconsistent, regulating part by the dynamic action being applied to it in conducting piece to change the relative position relation of conducting piece and corresponding resonant column.
Wherein, the outer wall of regulating part and the sidewall of conducting piece are inconsistent, and the axial motion of regulating part causes the relative distance of conducting piece and resonant column to change.
Wherein, outer wall and the conducting piece of regulating part fix, and the axial motion of regulating part causes the relative altitude of conducting piece and resonant column to change.
Wherein, between regulating part and conducting piece, also can be provided with moment conduction device, this moment conduction device passes to conducting piece by the moment of regulating part, to change the relative position relation of conducting piece and resonant column.
Wherein, cavity coupled structure is TE01 mould dielectric filter.
The beneficial effects of the utility model are: the situation that is different from prior art, cavity coupled structure of the present utility model comprises the cavity that is provided with cover plate, the joint that is installed on cavity wall and is communicated with cavity, and be located at least one resonator, conducting piece and at least one regulating part in cavity, each resonator comprises resonant cavity and is fixed on the resonant column in resonant cavity.Wherein, the side that the annexation of each structure is conducting piece is electrically connected with the joint that is positioned at cavity, opposite side near the resonant column of resonator to be electrically connected with it.Regulating part is placed in conducting piece back to a side of resonant column, and runs through cover plate and go deep into the corresponding resonant cavity of resonant column.Pass through said structure, regulating part can axial motion change the relative position relation between conducting piece and resonant column, to regulate the stiffness of coupling between conducting piece and resonant column, and then regulate the bandwidth of cavity coupled structure filtering port, make bandwidth that filtering port has accurate coupling to meet the electric index of filtering.
Accompanying drawing explanation
Fig. 1 is the port perspective view of the utility model cavity coupled structure one embodiment.
Embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated.
Refer to Fig. 1, Fig. 1 is the port perspective view of the utility model cavity coupled structure one embodiment.As shown in Figure 1, comprising: cover plate (not shown), cavity (figure is mark not), joint 11, conducting piece 12, the first resonator 13, the second resonator 14, the first regulating part 15 and the second regulating part 16.Wherein, the first resonator 13 comprises that the first resonant cavity 131 and the first resonant column 132, the second resonators 14 that are fixed in the first resonant cavity 131 comprise the second resonant cavity 141 and are fixed on the second resonant column 142 in the second resonant cavity 141.
In the present embodiment, the first resonant column 132 and the second resonant column 142 are dielectric resonance post, and cavity coupled structure is TE01 mould dielectric filter.Cavity coupled structure is multi-channel filter, and the first resonator 13 and the second resonator 14 adhere to the filter of not going the same way separately, and are all first resonator.
The annexation of above-mentioned each structure is, cover plate is covered on cavity, and joint 11 is installed on cavity wall and is communicated with cavity, and conducting piece 12, the first resonator 13 and the second resonator 14 are located in cavity.
One side of conducting piece 12 is electrically connected with the joint 11 that is positioned at cavity, opposite side near the first resonant column 132 and the second resonant column 142 to be electrically connected with it.
The first regulating part 15 and the second regulating part 16 are positioned at conducting piece 12 back to a side of the first resonant column 132 and the second resonant column 142, and run through cover plate respectively deeply to the first resonant cavity 131 and the second resonant cavity 141.Therefore, the first regulating part 15 is corresponding with the first resonant column 132, and the second regulating part 16 is corresponding with the second resonant column 142.
In the present embodiment, be positioned at the signal feedthrough of joint 11 of cavity, signal is transferred to conducting piece 12.Its length of part that joint 11 is positioned at cavity can suitably lengthen as required.
The implementation of signal transmission is, a side of conducting piece 12 is electrically connected with the joint 11 that is positioned at cavity, specifically comprises welding, directly connects or meet the mode interval setting of coupling.
Wherein, the set-up mode of coupling for to arrange thin film dielectrics between conducting piece 12 and the joint in cavity 11.Direct-connected mode is for to be fixedly connected with by modes such as screws.
In the present embodiment, be provided with for supporting the supporting construction of conducting piece 12 in cavity, conducting piece 12 is craspedodrome wire, is specially a craspedodrome argent line, for the transmission of signal between joint 11 and the first resonant column 132, the second resonant column 142.
In other embodiments, conducting piece 12 also can be curve wire.
In other embodiments, conducting piece 12 also can be wall scroll wire part, or the combination single line part for consisting of multistage wall scroll wire part.
The conducting piece 12 of above-mentioned any one shape, the part that it is electrically connected with the first resonant column 132 and the second resonant column 142 respectively, not only perpendicular with the axis of the first resonant column 132 and the second resonant column 142 respectively, also parallel to cut respectively the magnetic line of force of resonant column with the direction of an electric field of the first resonant column 132 and the second resonant column 142.Conducting piece 12 is realized the transmission of conducting piece 12 and the first resonant column 132, the second resonant column 142 signals by cutting the magnetic line of force of the first resonant column 132, the second resonant column 142.
In the present embodiment, the electric connection mode between conducting piece 12 and the first resonant column 132, the second resonant column 142 is coupling.
In the present embodiment, the first regulating part 15 and the second regulating part 16 are insulation material, and be threaded with cover plate respectively, the axial motion of the first regulating part 15 or the second regulating part 16 can make the relative position relation between conducting piece 12 and the first resonant column 132 or the second resonant column 142 change.
Realizing above-mentioned position changes, need to meet two conditions, one is that the first regulating part 15 or the second regulating part 16 are inconsistent with conducting piece 12, the first regulating part 15 or the second regulating part 16 by the dynamic action being applied to it in conducting piece 12 to change the relative position relation of conducting piece 12 and corresponding resonant column.Be specially, the outer wall of the first regulating part 15 or the second regulating part 16 and the sidewall of conducting piece 12 are inconsistent, and the axial motion of the first regulating part 15 or the second regulating part 16 causes the relative distance of conducting piece 12 and the first resonant column 132 or the second resonant column 142 to change.
Two to be that the first regulating part 15 or the second regulating part 16 are inserted respectively the part of the first resonant cavity 131 or the second resonant cavity 141 tapered, causes the change of relative position relation between conducting piece 12 and the first resonant column 132 or the second resonant column 142 to realize its axial motion.
In other embodiments, the part that the first regulating part 15 or the second regulating part 16 are inserted respectively the first resonant cavity 131 or the second resonant cavity 141 has respectively different thickness sizes along its axial diverse location.
In other embodiments, the part that the first regulating part 15 or the second regulating part 16 are inserted respectively the first resonant cavity 131 or the second resonant cavity 141 is axially arranged with the different a plurality of cascade rings of radial dimension along it.
In other embodiments, the first regulating part 15 or the second regulating part 16 regulate the mode of relative position relation between conducting piece 12 and the first resonant column 132 or the second resonant column 142 also to can be, do not limit the structure of the first regulating part 15 or the second regulating part 16, as long as its outer wall and conducting piece 12 fix, the axial motion meeting of the first regulating part 15 or the second regulating part 16 causes the relative altitude of conducting piece 12 and the first resonant column 132 or the second resonant column 142 to change.
In other embodiments, the first regulating part 15 or the second regulating part 16 regulate the mode of relative position relation between conducting piece 12 and the first resonant column 132 or the second resonant column 142 also to can be, between the first regulating part 15 or the second regulating part 16 and conducting piece 12, be provided with moment conduction device, this moment conduction device passes to conducting piece 12 by the moment of the first regulating part 15 or the second regulating part 16, to change the relative position relation of conducting piece 12 and the first resonant column 132 or the second resonant column 142.As: the first regulating part 15 or the second regulating part 16 are direct rod shape, by moment conduction device, the masterpiece of the first regulating part 15 or the second regulating part 16 axial motions generations is used for to conducting piece 12, make conducting piece 12 carry out transverse movement, to change the distance between conducting piece 12 and the first resonant column 132 or the second resonant column 142.
In the present embodiment, by changing the distance between conducting piece 12 and the first resonant column 132 or the second resonant column 142, to change the bandwidth of the first resonant column 132 or second resonant column 142 each self-corresponding filtering ports, make a path filter at the first resonant column 132 or the second resonant column 142 places there is accurate appropriate ports bandwidth, meet harsh electric index request.And because the first resonant column 132 belongs to different path filters with the second resonant column 142, be operated in different frequency ranges, therefore can not produce co-channel interference.
The cavity coupled structure of the present embodiment can be applicable to TE mould dielectric filter, and wherein, TE mould dielectric filter can Wei Yi road or filter more than two-way.
In sum, the utility model cavity coupled structure can be closed the adjusting that road port carries out filtering port bandwidth at it, avoids the interference of two independent dielectric filter ports in same structure, realizes the accurate coupling of filtering port bandwidth.Filter construction of the present utility model is simple, high conformity, and the debugging of filtering port bandwidth is convenient, needn't repeatedly tear lid open, greatly enhances productivity, and is applicable to batch production.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (14)
1. a cavity coupled structure, it is characterized in that, comprise the cavity that is provided with cover plate, the joint that is installed on cavity wall and is communicated with cavity, and be located at least one resonator, conducting piece and at least one regulating part in cavity, each resonator comprises resonant cavity and is fixed on the resonant column in resonant cavity;
One side of described conducting piece is electrically connected with the joint that is positioned at cavity, opposite side near the resonant column of resonator to be electrically connected with it;
Described conducting piece, back to a side of resonant column, is provided with and runs through cover plate and go deep into the regulating part of the corresponding resonant cavity of described resonant column, and the axial motion of described regulating part causes the relative position relation between described conducting piece and described resonant column to change.
2. cavity coupled structure according to claim 1, is characterized in that, described regulating part is inserted resonant cavity part and had respectively different thickness sizes along its axial diverse location.
3. cavity coupled structure according to claim 1, is characterized in that, it is tapered that described regulating part is inserted resonant cavity part.
4. cavity coupled structure according to claim 1, is characterized in that, described regulating part is inserted resonant cavity part and is axially arranged with the different a plurality of cascade rings of radial dimension along it.
5. according to the cavity coupled structure described in any one in claim 1 to 4, it is characterized in that, described conducting piece is craspedodrome wire or curve wire.
6. according to the cavity coupled structure described in any one in claim 1 to 4, it is characterized in that, described conducting piece is wall scroll wire part, or the combination single line part for consisting of multistage wall scroll wire part.
7. according to the cavity coupled structure described in any one in claim 1 to 4, it is characterized in that, described conducting piece with and the axis of the resonant column of its electric connection perpendicular, and with the parallel magnetic line of force with cutting resonant column of direction of an electric field of this resonant column.
8. according to the cavity coupled structure described in any one in claim 1 to 4, it is characterized in that, described regulating part, for insulation material, is threaded with described cover plate.
9. according to the cavity coupled structure described in any one in claim 1 to 4, it is characterized in that, described cavity is provided with for supporting the supporting construction of described conducting piece.
10. according to the cavity coupled structure described in any one in claim 1 to 4, it is characterized in that, described regulating part and described conducting piece are inconsistent, regulating part by the dynamic action being applied to it in described conducting piece to change the relative position relation of conducting piece and corresponding resonant column.
11. cavity coupled structures according to claim 10, is characterized in that, the outer wall of described regulating part and the sidewall of conducting piece are inconsistent.
12. cavity coupled structures according to claim 10, is characterized in that, outer wall and the conducting piece of described regulating part fix.
13. according to the cavity coupled structure described in any one in claim 1 to 4, it is characterized in that, is provided with moment conduction device between described regulating part and conducting piece, and this moment conduction device is for passing to conducting piece by the moment of regulating part.
14. according to the cavity coupled structure described in any one in claim 1 to 4, it is characterized in that, described cavity coupled structure is TE01 mould dielectric filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420275616.5U CN203910948U (en) | 2014-05-27 | 2014-05-27 | Cavity coupling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420275616.5U CN203910948U (en) | 2014-05-27 | 2014-05-27 | Cavity coupling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203910948U true CN203910948U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420275616.5U Withdrawn - After Issue CN203910948U (en) | 2014-05-27 | 2014-05-27 | Cavity coupling structure |
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| Country | Link |
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| CN (1) | CN203910948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037479A (en) * | 2014-05-27 | 2014-09-10 | 京信通信系统（中国）有限公司 | Cavity coupling structure |
-
2014
- 2014-05-27 CN CN201420275616.5U patent/CN203910948U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037479A (en) * | 2014-05-27 | 2014-09-10 | 京信通信系统（中国）有限公司 | Cavity coupling structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |