CN205355216U - Diaphragm formula tunable filter - Google Patents
Diaphragm formula tunable filter Download PDFInfo
- Publication number
- CN205355216U CN205355216U CN201521082510.4U CN201521082510U CN205355216U CN 205355216 U CN205355216 U CN 205355216U CN 201521082510 U CN201521082510 U CN 201521082510U CN 205355216 U CN205355216 U CN 205355216U
- Authority
- CN
- China
- Prior art keywords
- cavity
- partition wall
- wave
- filter
- tunable filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model discloses a diaphragm formula tunable filter, its characterized in that: the wave filter is E face waveguide filter, it is provided with a plurality of cavity partition walls to be on a parallel with the E face in the wave filter cavity, transmission path has on the cavity partition wall, but be on a parallel with the harmonious medium of diaphragm formula metal that the H face was provided with vertical migration in the wave filter cavity. The utility model provides a E face waveguide filter is adopted at the diaphragm formula tunable filter of microwave frequency band, this tunable filter to brand -new work, cut apart direct the processing on the cavity of partition wall between the resonant cavity, the tuning mechanism adopts the beryllium -bronze diaphragm, and simple structure, beryllium copper piece have certain elasticity, and intensity is very high, and the sound construction is difficult to damage, it is functional, guaranteeing that adjustable bandwidth can reach 10% under echo and the bandwidth circumstances unchangeable basically.
Description
Technical field
This utility model belongs to electronic communication technology field, particularly relates to a kind of diaphragm type tunable filter in order to realize microwave frequency band, for suppressing the band stray of communication band, improves communication information quality.
Background technology
Tunable filter is the important component part of microwave reconfiguration system, applies to the aspects such as frequency hopping radio set, electronic countermeasure, multi function receiver, dynamic frequency allocation system widely.The mode of common tunable filter many employings radio-frequency (RF) switch controlled loading electric capacity, these tunable filters can only operate in relatively low frequency range.
In recent years due to the needs of communication system development, the tunable filter of microwave frequency band has had to be needed widely.Using in order to meet the frequency range microwave is higher, the method for designing of radio-frequency range tunable filter obviously can not be suitable for.In order to design qualified tunable filter at microwave frequency band, all adopt on the basis of waveguide filter at present, add Tuning mechanism and realize.
The method adopted in microwave regime at present mainly has several as follows: 1, the medium rotation mode that NEC Corporation of Japan proposes, and with the medium of a piece of high-k as mechanical tuning device, the mode rotated by an axle rotates dieelctric sheet tuning；2, the medium horizontal sliding mode of Huawei Company, be also the dieelctric sheet with a piece of high-k as mechanical tuning device, the mode carrying out promoting with the support bar of two high intensity is tuned.The tunable filter that both modes realize can work K-band, has higher performance.But both approaches has shortcoming: 1, owing to tuning dielectric thickness is very thin, the insufficient strength of medium is big, and frangible it is easily damaged；2, in tuning process, in Out-of-band rejection, band, Insertion Loss and the interior echo of band worsen serious；3, tuning bandwidth is not wide it is reported, BREATHABLE BANDWIDTH is 2%--5% only；4, the partition wall between wave filter segmentation resonator cavity adopts the structure of diaphragm type, causes that mechanical tuning device can only regulate in half cavity, limits the scope of tuning.
Utility model content
This utility model purpose is in that to provide a kind of functional, that BREATHABLE BANDWIDTH is bigger when guarantee echo and bandwidth are basically unchanged diaphragm type tunable filter for the defect of prior art.
This utility model for achieving the above object, adopts the following technical scheme that
A kind of diaphragm type tunable filter, it is characterised in that: described wave filter is E face waveguide filter, is parallel to E face and is provided with multiple cavity partition wall, described cavity partition wall has transmission channel in described filter cavity body；It is parallel to H face in described filter cavity body and is provided with vertically moving diaphragm type metal tuning medium.
It is further characterized by described diaphragm type metal tuning medium is the beryllium-bronze diaphragm being driven lifting by motor.
Preferred: described beryllium-bronze membrane surface is vertically arranged with multiple boss, and described lug boss position and cavity partition wall position match；Described boss is between adjacent two cavity partition walls, and the spacing of described adjacent lands is equal with the spacing of corresponding neighboring chambers partition wall.Control the distance between suitable projection width and adjacent lands, it is possible to obtain suitable tuned window.
Described wave filter is fabricated structure, two wave-guide cavity waves with " П " shape cavity combine, and described " П " shape cavity bottom is vertically installed with multiple partition wall, and described partition wall height is lower than described " П " shape cavity depth.By the interval between height and the partition wall of control partition wall, it is thus achieved that the frequency response curve of the original filter of needs.The number of partition wall is determined by the exponent number of wave filter.
Described wave-guide cavity wave and partition wall are structure as a whole, and described partition wall and wave-guide cavity wave junction have chamfering.
The utility model proposes a kind of brand-new diaphragm type tunable filter being operated in microwave frequency band, this tunable filter adopts E face waveguide filter；Partition wall between segmentation resonator cavity is directly processed on cavity；Mechanical tuning device adopts beryllium-bronze diaphragm, simple in construction, and beryllium copper sheet has certain elasticity, and intensity is significantly high, sound construction, it is not easy to damage；Functional, when guarantee echo and bandwidth are basically unchanged, BREATHABLE BANDWIDTH is up to 10%.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is two symmetrical wave-guide cavity wave graphics.
Fig. 3 is the top plan view of wave-guide cavity wave.
Fig. 4 is metal tuning medium schematic diagram.
Fig. 5 is embodiment frequency response curve.
Detailed description of the invention
Fig. 1 is the overall structure schematic diagram of a kind of tunable filter, by figure it can be seen that whole tunable filter frame for movement includes following components, be motor respectively, metal tuning medium, two wave-guide cavity waves.The combination of said two wave-guide cavity wave forms E face waveguide filter, and described metal tuning medium, in the middle of two wave-guide cavity waves, is driven lifting to be tuned by motor.
Fig. 2 is two symmetrical wave-guide cavity wave graphics of the core of this tunable filter；Fig. 3 is the top plan view of one of them wave-guide cavity wave.Wave-guide cavity wave has several partition walls, by the interval d between height and the adjacent partition wall of control partition wall, it is thus achieved that the frequency response curve of the original filter of needs.The number of partition wall is determined by the exponent number of wave filter.There is lead angle, it is simple to processing between partition wall and wave-guide cavity wave.
Fig. 4 is metal tuning medium schematic diagram, and it is the foil of block beryllium-bronze, and on thin slice, processing has the shape in figure below, and the present embodiment illustrates the structure of tuned window for six rank tunable filters.Having six boss on the mechanical tuning device diaphragm of six rank tunable filters, boss is center between adjacent two cavity partition walls, and the spacing of described adjacent lands is equal with the spacing of corresponding adjacent partition wall.Control the distance d between suitable projection width L and boss, it is possible to obtain suitable tuned window.
Fig. 5 is the present embodiment metallic membrane tunable filter frequency response curve in 15GHz frequency range.The curve provided in figure is metal tuning medium frequency response curve when pushing 0.1mm, 1mm, 1.5mm, 2mm, 2.25mm and 2.5mm respectively.By curve in figure it can be seen that the adjustable filtering of this structure is when keeping the performance such as bandwidth and echo to be basically unchanged, tunable bandwidth has reached 10%, and its tunable performance is far superior to the scheme of current NEC and Huawei.
Claims (5)
1. a diaphragm type tunable filter, it is characterised in that: described wave filter is E face waveguide filter, is parallel to E face and is provided with multiple cavity partition wall, described cavity partition wall has transmission channel in described filter cavity body；It is parallel to H face in described filter cavity body and is provided with vertically moving diaphragm type metal tuning medium.
2. diaphragm type tunable filter according to claim 1, it is characterised in that: described diaphragm type metal tuning medium is the beryllium-bronze diaphragm being driven lifting by motor.
3. diaphragm type tunable filter according to claim 2, it is characterised in that: described beryllium-bronze membrane surface is vertically arranged with multiple boss, and described lug boss position and cavity partition wall position match；Described boss is between adjacent two cavity partition walls, and the spacing of described adjacent lands is equal with the spacing of corresponding neighboring chambers partition wall.
4. the diaphragm type tunable filter according to any one of claim 1-3, it is characterized in that: described wave filter is fabricated structure, combined by two wave-guide cavity waves with " П " shape cavity, described " П " shape cavity bottom is vertically installed with multiple partition wall, and described partition wall height is lower than described " П " shape cavity depth.
5. diaphragm type tunable filter according to claim 4, it is characterised in that: described wave-guide cavity wave and partition wall are structure as a whole, and described partition wall and wave-guide cavity wave junction have chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521082510.4U CN205355216U (en) | 2015-12-22 | 2015-12-22 | Diaphragm formula tunable filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521082510.4U CN205355216U (en) | 2015-12-22 | 2015-12-22 | Diaphragm formula tunable filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205355216U true CN205355216U (en) | 2016-06-29 |
Family
ID=56168939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521082510.4U Expired - Fee Related CN205355216U (en) | 2015-12-22 | 2015-12-22 | Diaphragm formula tunable filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205355216U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406157A (en) * | 2015-12-22 | 2016-03-16 | 江苏贝孚德通讯科技股份有限公司 | Diaphragm type adjustable filter |
| CN112072225A (en) * | 2020-09-10 | 2020-12-11 | 衡阳市衡山科学城科技创新服务有限公司 | Ceramic dielectric waveguide filter for 5G base station and preparation method thereof |
| US10873118B2 (en) | 2016-12-30 | 2020-12-22 | Huawei Technologies Co., Ltd. | Tunable filter and tunable filtering device |
| US11196136B2 (en) | 2017-12-29 | 2021-12-07 | Huawei Technologies Co., Ltd. | Cavity filter |
-
2015
- 2015-12-22 CN CN201521082510.4U patent/CN205355216U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406157A (en) * | 2015-12-22 | 2016-03-16 | 江苏贝孚德通讯科技股份有限公司 | Diaphragm type adjustable filter |
| CN105406157B (en) * | 2015-12-22 | 2019-04-02 | 江苏贝孚德通讯科技股份有限公司 | A kind of diaphragm type tunable filter |
| US10873118B2 (en) | 2016-12-30 | 2020-12-22 | Huawei Technologies Co., Ltd. | Tunable filter and tunable filtering device |
| US11196136B2 (en) | 2017-12-29 | 2021-12-07 | Huawei Technologies Co., Ltd. | Cavity filter |
| CN112072225A (en) * | 2020-09-10 | 2020-12-11 | 衡阳市衡山科学城科技创新服务有限公司 | Ceramic dielectric waveguide filter for 5G base station and preparation method thereof |
| CN112072225B (en) * | 2020-09-10 | 2021-11-02 | 衡阳市衡山科学城科技创新服务有限公司 | Ceramic dielectric waveguide filter for 5G base station and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205355216U (en) | Diaphragm formula tunable filter | |
| CN101877427B (en) | Communication device, cavity filter, resonating tube and manufacturing method thereof | |
| CN109149037B (en) | TM mode-based medium dual-mode band-pass filter and control method | |
| CN201523058U (en) | Controllable electromagnetic coupling dielectric resonator filter | |
| KR20150112179A (en) | Waveguide Band Pass Filter using Short-circuit Stub for Out-of-Band Improvement | |
| JP2017537581A (en) | Transverse electromagnetic mode dielectric filter, radio frequency module, and base station | |
| CN101699648A (en) | Controllable electromagnetic coupling dielectric resonator filter | |
| CN105406157B (en) | A kind of diaphragm type tunable filter | |
| CN104157973A (en) | Double-frequency printed monopole antenna array with low coupling | |
| CN108987864A (en) | Centre frequency and complete adjustable 1/8th moulds substrate integral wave guide filter of bandwidth | |
| CN109244619B (en) | Folding cavity medium loading adjustable filter and duplexer | |
| CN107251314B (en) | Cavity filter, radio frequency remote equipment with cavity filter, signal receiving and transmitting device and tower top amplifier | |
| CN103151589B (en) | The combiner structure of cavity radio frequency device and adopt the cavity radio frequency device of this structure | |
| CN108011162B (en) | Dielectric filter with hybrid coupling structure | |
| CN104362417A (en) | Band-pass filter | |
| CN106099273B (en) | A kind of TE mould multi-pass band dielectric filter | |
| KR101315878B1 (en) | Dual mode dielectric resonator filter | |
| CN104409811A (en) | Switchable plane surface bandpass-bandstop filter | |
| CN109219904A (en) | A kind of TEM mode filter and communication equipment | |
| CN202352806U (en) | Novel electric cross coupling structure | |
| EP3159966B1 (en) | Antenna device and terminal | |
| CN109155450A (en) | Radio-frequency filter | |
| CN102623783A (en) | Novel resonant pole of cavity filter | |
| CN202487735U (en) | Low-intermodulation broadband power divider | |
| CN106450602B (en) | TE mould multi-pass band dielectric filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20191222 |