CN201063357Y - Input/output regulation type coupling device for filter - Google Patents
Input/output regulation type coupling device for filter Download PDFInfo
- Publication number
- CN201063357Y CN201063357Y CNU2006201726774U CN200620172677U CN201063357Y CN 201063357 Y CN201063357 Y CN 201063357Y CN U2006201726774 U CNU2006201726774 U CN U2006201726774U CN 200620172677 U CN200620172677 U CN 200620172677U CN 201063357 Y CN201063357 Y CN 201063357Y
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- filter
- coupling device
- hollow bar
- resonant rod
- metal hollow
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- 230000008878 coupling Effects 0.000 title claims abstract description 25
- 238000010168 coupling process Methods 0.000 title claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000011810 insulating material Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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Abstract
A filter input and output regulation type coupler comprises a connector which is positioned on the side wall of a cavity of a filter, a resonant rod which is arranged in the cavity of the filter most close to the connector, the connector and the resonant rod are connected by a lead wire. The utility model is characterized in that the resonant rod is a metal hollow rod, which is inserted with a tuning plug. Because the strong and weak of the input and output coupling can be regulated, the utility model can not affect the filtering performance of the filter, but can improve performance influence on the filter caused by assembly error, also can be applied to a tunable filter, thereby guaranteeing that the filter can fulfill frequency tunable but the performance of the filter not changed in a large frequency range.
Description
Technical field
The utility model relates to the microwave communication field, relates in particular to a kind of filter input and output adjustable type coupling device.
Background technology
Cavity body filter is a kind of passive device, it can be in communication system filtering interference signal useless, guarantee signal operate as normal in the operating frequency range, and pass through with the loss of minimum.This filter is by the distributed constant principle design, realizes its performance index by mechanical structure.The input and output coupling device of traditional cavity body filter is by lead connector to be welded on (see figure 1) or direct ground connection (see figure 2) formation on the resonant rod, wherein, lead is a silver-gilt copper wire, the resonant cavity electroplate, cover plate is silver-plated, the silver-plated or employing dielectric resonator of resonant rod.The input and output coupling device of this structure, in case structure is qualitative, then can't change its shape, distributed constant with respect to filter, also just can't change the power of its input and output coupling, when filter will be realized frequency adjustable, because wherein electromagnetic field changes thereupon, the performance of filter also can change, thereby influences result of use.
Summary of the invention
The purpose of this utility model is the deficiency that exists in the above-mentioned background technology in order to solve, propose a kind of structure optimization, the strong and weak adjustable adjustable type filter input and output coupling device of filter input and output coupling, make it guarantee that in the adjustable process of filter frequencies performance of filter is constant.
For achieving the above object, the utility model adopts following technical scheme: a kind of adjustable type filter input and output coupling device, comprise the connector that is positioned on the filter cavity body sidewall, be installed in the filter cavity resonant rod of close connector, be connected with lead between above-mentioned connector and the resonant rod, it is characterized in that described resonant rod is the metal hollow bar, inserts tuning plug in the metal hollow bar.
In such scheme, can be provided with the gap between described metal hollow bar inner surface and the tuning plug outer surface.
In such scheme, also can short circuit between described metal hollow bar inner surface and the tuning plug outer surface.
In such scheme, can be with the dielectric ring that one deck insulating material is made in the described metal hollow bar.
In such scheme, described tuning plug is a metal screw, and its end can be fixed on the filter cavity bottom surface threadably, and the other end stretches in the metal hollow bar.
One end of above-mentioned tuning plug can also be fixed on the cover plate of filter threadably, and the other end stretches in the metal hollow bar.
The utility model is owing to the power of its input and output coupling can be regulated, can not have influence on the filtering performance of filter, can improve on the contrary because the performance impact that rigging error causes filter, and can be applicable to tunable filter, guaranteed that filter is realized frequency adjustable in very big frequency range and performance of filter is constant.
The utility model is applicable to all cavity body filters, comprises that band is logical, band stop filter, metal resonant cavity filter and dielectric resonance cavity body filter.
Description of drawings
Fig. 1 is a kind of input and output coupling device stereogram of conventional filter.
Fig. 2 is the another kind of input and output coupling device stereogram of conventional filter.
Fig. 3 is the stereogram of embodiment 1.
Fig. 4 is the stereogram of embodiment 2.
Fig. 5 is the stereogram of embodiment 3.
Embodiment
Embodiment 1: referring to Fig. 3, present embodiment is made up of with the resonant rod 2 and the tuning plug 4 that are installed on the most close connector 3 of filter cavity inner bottom surface the connector 3 that is positioned on filter cavity 1 sidewall.Be connected with lead 5 between above-mentioned connector 3 and the resonant rod 2.Described resonant rod 2 is the metal hollow bar, is with the dielectric ring 6 that one deck is made with materials such as polytetrafluoroethylene or high-dielectric-constant ceramics in this metal hollow bar.The metal hollow bar is bonded on the dielectric ring 6.Described tuning plug 4 is a metal screw, and its end is fixed on filter cavity 1 bottom surface threadably, and the other end stretches in the resonant rod 2.Be provided with the gap between dielectric ring 6 inner surfaces and tuning plug 4 outer surfaces.
The metal hollow bar of present embodiment and the air between the tuning plug 4 and dielectric ring 6 constitute capacitive means as medium, and the tuning plug 4 that is positioned at filter cavity 1 bottom surface by adjusting is regulated stiffness of coupling, has realized the adjustability of input and output stiffness of couplings.
Embodiment 2: referring to Fig. 4, present embodiment is made up of with the resonant rod 2 and the tuning plug 4 that are installed on the most close connector 3 of filter cavity inner bottom surface the connector 3 that is positioned on filter cavity 1 sidewall.Be connected with lead 5 between above-mentioned connector 3 and the resonant rod 2.Described resonant rod 2 is the metal hollow bar.Described tuning plug 4 is a metal screw, and its end is fixed on the cover plate that is arranged on the filter cavity threadably, and the other end stretches in the resonant rod 2.Be provided with the gap between metal hollow bar inner surface and tuning plug 4 outer surfaces.
The resonant rod 2 of present embodiment and the air between the tuning plug 4 constitute capacitive means as medium, and the tuning plug 4 that is arranged in the filter cavity upper cover plate by adjusting is regulated stiffness of coupling, have realized the adjustability of input and output stiffness of couplings.
Embodiment 3: referring to Fig. 5, present embodiment is formed near the resonant rod 2 and the tuning plug 4 of connector 3 by being positioned at the connector 3 on filter cavity 1 sidewall and being installed on the filter cavity inner bottom surface.Be connected with lead 5 between above-mentioned connector 3 and the resonant rod 2.Described resonant rod 2 is the metal hollow bar.Described tuning plug 4 is a metal screw, and its end is fixed on filter cavity 1 bottom surface threadably, and the other end stretches in the resonant rod 2, and stretches out from resonant rod 2 other ends.Contact between metal hollow bar inner surface and tuning plug 4 outer surfaces.
Short circuit between the resonant rod 2 of present embodiment and the tuning plug 4, tuning plug 4 constitutes probe structure, stretches out the length of resonant rod 2 by adjusting tuning plug 4 and regulates stiffness of coupling, has realized the adjustability of input and output stiffness of couplings.
The size of above-mentioned resonant rod 2 designs according to filter cavity size, operating frequency, also can select supporting dielectric resonator for use, and concrete selects according to design.Resonant rod 2 can install with cover plate on.
Claims (6)
1. filter input and output adjustable type coupling device, comprise the connector that is positioned on the filter cavity body sidewall, be installed in the filter cavity resonant rod of close connector, be connected with lead between above-mentioned connector and the resonant rod, it is characterized in that described resonant rod is the metal hollow bar, inserts tuning plug in the metal hollow bar.
2. filter input and output adjustable type coupling device according to claim 1 is characterized in that being provided with the gap between described metal hollow bar inner surface and the tuning plug outer surface.
3. filter input and output adjustable type coupling device according to claim 1 is characterized in that short circuit between described metal hollow bar inner surface and the tuning plug outer surface.
4. filter input and output adjustable type coupling device according to claim 1 is characterized in that being with the dielectric ring that one deck insulating material is made in the described metal hollow bar.
5. according to the described filter input and output of arbitrary claim adjustable type coupling device in the claim 1 to 4, it is characterized in that described tuning plug is a metal screw, its end is fixed on the filter cavity bottom surface threadably, and the other end stretches in the metal hollow bar.
6. according to the described filter input and output of arbitrary claim adjustable type coupling device in the claim 1 to 4, it is characterized in that described tuning plug is a metal screw, its end is fixed on the cover plate of filter threadably, and the other end stretches in the metal hollow bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201726774U CN201063357Y (en) | 2006-12-28 | 2006-12-28 | Input/output regulation type coupling device for filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201726774U CN201063357Y (en) | 2006-12-28 | 2006-12-28 | Input/output regulation type coupling device for filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201063357Y true CN201063357Y (en) | 2008-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201726774U Expired - Lifetime CN201063357Y (en) | 2006-12-28 | 2006-12-28 | Input/output regulation type coupling device for filter |
Country Status (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834333A (en) * | 2010-04-29 | 2010-09-15 | 合肥威科电子技术有限公司 | Coaxial power coupler |
| CN101894993A (en) * | 2010-07-14 | 2010-11-24 | 深圳市大富科技股份有限公司 | Communication equipment, cavity filter and tuning post thereof |
| CN101964437A (en) * | 2009-07-23 | 2011-02-02 | 深圳市大富科技股份有限公司 | Cavity filter and input/output structure thereof |
| CN104681897A (en) * | 2013-11-27 | 2015-06-03 | 凯镭思通讯设备（上海）有限公司 | Input and output coupling structure for transverse magnetic (TM) mode dielectric filter |
| CN104882651A (en) * | 2015-05-15 | 2015-09-02 | 摩比天线技术（深圳）有限公司 | Terminal port structure of radio frequency filter and radio frequency filter |
| CN109687073A (en) * | 2019-03-01 | 2019-04-26 | 江苏德是和通信科技有限公司 | A kind of star-like duplexer of DTV adjacent channel |
-
2006
- 2006-12-28 CN CNU2006201726774U patent/CN201063357Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964437A (en) * | 2009-07-23 | 2011-02-02 | 深圳市大富科技股份有限公司 | Cavity filter and input/output structure thereof |
| CN101834333A (en) * | 2010-04-29 | 2010-09-15 | 合肥威科电子技术有限公司 | Coaxial power coupler |
| CN101834333B (en) * | 2010-04-29 | 2017-02-08 | 合肥威科电子技术有限公司 | Coaxial power coupler |
| CN101894993A (en) * | 2010-07-14 | 2010-11-24 | 深圳市大富科技股份有限公司 | Communication equipment, cavity filter and tuning post thereof |
| CN104681897A (en) * | 2013-11-27 | 2015-06-03 | 凯镭思通讯设备（上海）有限公司 | Input and output coupling structure for transverse magnetic (TM) mode dielectric filter |
| CN104882651A (en) * | 2015-05-15 | 2015-09-02 | 摩比天线技术（深圳）有限公司 | Terminal port structure of radio frequency filter and radio frequency filter |
| CN104882651B (en) * | 2015-05-15 | 2018-09-14 | 摩比天线技术（深圳）有限公司 | A kind of port organization and radio-frequency filter of radio-frequency filter |
| CN109687073A (en) * | 2019-03-01 | 2019-04-26 | 江苏德是和通信科技有限公司 | A kind of star-like duplexer of DTV adjacent channel |
| CN109687073B (en) * | 2019-03-01 | 2024-04-12 | 江苏德是和通信科技有限公司 | Digital television adjacent channel star-shaped duplexer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080521 |
|
| EXPY | Termination of patent right or utility model |