CN102509819A - Dielectric filter, locking nut, tuning device and communication radio-frequency apparatus - Google Patents
Dielectric filter, locking nut, tuning device and communication radio-frequency apparatus Download PDFInfo
- Publication number
- CN102509819A CN102509819A CN2011103401931A CN201110340193A CN102509819A CN 102509819 A CN102509819 A CN 102509819A CN 2011103401931 A CN2011103401931 A CN 2011103401931A CN 201110340193 A CN201110340193 A CN 201110340193A CN 102509819 A CN102509819 A CN 102509819A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- dielectric filter
- locking nut
- tuning
- cavity
- 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.)
- Granted
Links
Images
Abstract
The invention relates to the field of radio frequency, in particular to a dielectric filter, a locking nut, a tuning device and a communication radio-frequency apparatus. The dielectric filter comprises a cavity, a cover plate unit sealing and covering the cavity to form a resonant cavity and comprising an upper cover plate and a lower cover plate, and a tuning structure comprises a tuning screw rod and a tuning nut; the dielectric filter further comprises the locking nut penetrating into the cover plate unit; the locking nut comprises a rotating body, a flange positioned at one end of the rotating body, and an axial through hole running through the locking nut; the rotating body is in threaded connection with the cover plate unit; further, the flange is butted with the lower cover plate, so that the upper cover plate is in contact with the lower cover plate closely; and the tuning screw rod penetrates into the axial through hole and stretches into the cavity. Therefore, by using the dielectric filter, the locking nut, the tuning device and the communication radio-frequency apparatus, the cover plate unit of the dielectric filter can be closely connected with the cavity; further, the intermodulation performance index and the insertion loss performance index of the dielectric filter are improved; and the performance is stable and reliable.
Description
Technical field
The present invention relates to the dielectric filter technical field, relate in particular to a kind of dielectric filter, be used for the locking nut of dielectric filter and have the communication radio frequency device of this dielectric filter.
The background skill originally
In traditional dielectric filter structure, an end of dielectric resonator contacts with cavity, and the other end contacts with cover plate.Wherein, cover plate is made up of two cover plates up and down again, and lower cover is the aluminum component cover plate of routine, and upper cover plate is the extraordinary thin cover plate of rigidity, between two cover plates, adorns an elastic structure.Connect through screw between cover plate and the cavity, screw is pressed on the upper cover plate, and pressure finally evenly is delivered to pressure on the dielectric resonator through upper cover plate, elastic structure and lower cover.But because elastic structure and the interference fit between the cover plate up and down, upper cover plate is upspring after receiving the elastic force that elastic structure produces easily, makes can not closely be connected between cover plate and the cavity, thereby causes the intermodulation performance and the Insertion Loss poor-performing of dielectric filter.
Can know that to sum up existing dielectric filter obviously exists inconvenience and defective, so be necessary to improve on reality is used.
Summary of the invention
In view of this; The present invention provides a kind of dielectric filter, locking nut, tuner and communication radio frequency device; Closely be connected between its cover plate unit that can make dielectric filter and the cavity, improved the intermodulation performance index and the Insertion Loss performance index of dielectric filter, stable and reliable for performance.
The embodiment of the invention solves the problems of the technologies described above a technical scheme of being taked and provides a kind of dielectric filter, comprising: cavity;
The cover plate unit, the said cavity of said cover plate unit capping forms resonant cavity, and it comprises upper cover plate and lower cover;
Tuning structure comprises tuning screw rod and tuning nut;
Said dielectric filter also comprises the locking nut that is arranged in said cover plate unit; Said locking nut comprises rotary body, is positioned at the flange of said rotary body one end and the axially extending bore that runs through said locking nut; Said rotary body and said cover plate unit are spirally connected; And said flange makes said upper cover plate closely contact with lower cover with said lower cover butt, and said tuning screw rod is arranged in said axially extending bore and stretches in the said cavity.
According to dielectric filter of the present invention, the outer surface of said rotary body is provided with external screw thread, and said rotary body is spirally connected through said external screw thread and said cover plate unit;
Be provided with internal thread in the said axially extending bore, said axially extending bore is spirally connected through said internal thread and said tuning screw rod;
The direction of rotation of said external screw thread and said internal thread is opposite.
According to dielectric filter of the present invention, said external screw thread is a fine thread.
According to dielectric filter of the present invention, said dielectric filter also comprises the dielectric resonator with said lower cover and said cavity butt; Elastic structure between said upper cover plate and the said lower cover, said elastic structure push said lower cover makes said lower cover closely contact with said dielectric resonator.
According to dielectric filter of the present invention, the gauge of the more said lower cover of gauge of said upper cover plate is big.
According to dielectric filter of the present invention, said flange is circle or polygon.
According to dielectric filter of the present invention, said flange is provided with the flat recess that is used to rotate said locking nut.
According to dielectric filter of the present invention, the axial length of said rotary body is less than the thickness of said cover plate unit.
According to dielectric filter of the present invention, said tuning nut presses in said upper cover plate, and is provided with external teeth serrated lock washer between said tuning nut and the said upper cover plate.
The present invention is corresponding to provide a kind of communication radio frequency device; Said communication radio frequency device comprises above-mentioned dielectric filter; Said dielectric filter is located at the transceiver circuit part of said communication radio frequency device; Be used for signal is selected, said communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
The present invention also provides a kind of locking nut, is used for dielectric filter, and said dielectric filter comprises:
Cavity;
The cover plate unit, the said cavity of said cover plate unit capping forms resonant cavity, and it comprises upper cover plate and lower cover;
Tuning structure comprises tuning screw rod and tuning nut;
Said locking nut is arranged in said cover plate unit; And said locking nut comprises rotary body, flange and axially extending bore; Said rotary body and said cover plate unit are spirally connected; And said flange makes said upper cover plate closely contact with lower cover with said lower cover butt, and said tuning screw rod is arranged in said axially extending bore and stretches in the said cavity.
The present invention also provides a kind of tuner; Said tuner comprises locking nut and tuning screw rod; Said locking nut comprises rotary body, is positioned at the flange of rotary body one end and the axially extending bore that runs through locking nut, and said tuning screw rod is arranged in the said axially extending bore.
Dielectric filter of the present invention comprises that one wears the locking nut of cover plate unit, the flange of this locking nut and said lower cover butt, and screw togather between said rotary body and the said cover plate upper cover plate is closely contacted with lower cover.Locking nut can tightly lock together upper cover plate and lower cover; Elastic structure between upper cover plate and the lower cover can not be upspring upper cover plate; Thereby guaranteed tight connection the between upper cover plate and the lower cover; Also make combine between cover plate unit and the cavity more tight, thereby make the intermodulation performance index of dielectric filter and Insertion Loss performance index better.Whereby, closely be connected between the cover plate unit that the present invention can make dielectric filter and the cavity, and improved the intermodulation performance index and the Insertion Loss performance index of dielectric filter, stable and reliable for performance.
Description of drawings
Fig. 1 is the cross sectional view of a kind of embodiment of dielectric filter of the present invention;
Fig. 2 is the three-dimensional view of the locking nut of dielectric filter of the present invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer, combine accompanying drawing and embodiment once, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1; A kind of dielectric filter 100 of the present invention; Be used for the communication radio frequency device; Dielectric filter 100 is located at the transceiver circuit part of communication radio frequency device, is used for signal is selected, and said communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.Dielectric filter 100 comprises: cavity 10, cover plate unit 20, mechanical tuning device 30, dielectric resonator 40 and the locking nut 50 that is arranged in cover plate unit 20.
Continuous with reference to Fig. 2; The axially extending bore 53 that locking nut 50 comprises rotary body 51, is positioned at the flange 52 of rotary body 51 lower ends and runs through locking nut 50; Flange 52 and lower cover 22 butts; And screw togather between rotary body 51 and the cover plate unit 20 upper cover plate 21 is closely contacted with lower cover 22, tuning screw rod 31 is arranged in axially extending bore 53 and stretches in the cavity 10, and tuning screw rod 31 is spirally connected with axially extending bore 53.Wherein, have the slit between flange 52 and the dielectric resonator 40,, can't produce the resonance frequency of requirement if seamless then resonance frequency changes greatly, produced resonance frequency also can't with resonance point be tuned in the passband, make tuning screw rod 31 not have tunning effect.
In the installation process of dielectric filter 100, at first upper cover plate 21, lower cover 22 and elastic structure 23 are combined and installed together; Then locking nut 50 is screwed in the cover plate unit 20 flange 52 and lower cover 22 butts; Again cover plate unit 20 is passed through screw on cavity 10; Again tuning screw rod 31 is screwed in the cavity 10 by axially extending bore 53 at last, and tuning screw rod 31 is fixed through tuning nut 32.
Preferably, the gauge of upper cover plate 21 is big than the gauge of lower cover 22, thereby makes upper cover plate 21 be difficult for being upspring by elastic structure 23.
As shown in Figure 2, locking nut 50 comprises rotary body 51, flange 52 and axially extending bore 53.The outer surface of rotary body 51 is provided with external screw thread, and cover plate unit 20 is provided with the screw thread that matches with the external screw thread of rotary body 51, and rotary body 51 is spirally connected through this external screw thread and cover plate unit 20; Be provided with internal thread in the axially extending bore 53, tuning screw rod 31 is provided with the screw thread that matches with this internal thread, and axially extending bore 53 is spirally connected through this internal thread and tuning screw rod 31.Wherein, The direction of rotation of external screw thread and said internal thread is opposite; With the internal thread is that right-handed thread, external screw thread are that left hand thread is example, goes in the process of axially extending bore 53 in tuning screw rod 31 dextrorotation, because the direction of rotation of external screw thread and internal thread is opposite; Lock is tight more more between that make the rotary body 51 and cover plate unit 20, has avoided rotary body 51 from cover plate unit 20, to screw out.Preferably, external screw thread is set to fine thread, and fine thread can make and combine more accurately between rotary body 51 and the cover plate unit 20, causes the loosening of rotary body 51 and cover plate unit 20 when avoiding tuning screw rod 31 from rotary body 51, to screw out.Obviously, the internal thread of axially extending bore 53 also can be set to fine thread.
As shown in Figure 2, the flange 52 of locking nut 50 is preferably circle, and it can increase the contact area between flange 52 and the lower cover 22, thereby makes the locking effect of locking nut 50 better.Certainly, flange 52 also can be polygon.Flange 52 is provided with the flat recess 521 that is used for rotational lock nut 51, is convenient to locking nut 51 and screws in cover plate unit 20.
Preferably, the axial length of rotary body 51 is less than the thickness of cover plate unit 20.Owing to the thickness of cover plate unit 20 owing to possibly there is certain error in reasons such as processing; If the axial length of rotary body 51 equates with the thickness of cover plate unit 20 fully; May make rotary body 51 exceed cover plate unit 20 when locking nut 50 is installed, make tuning nut 32 and external teeth serrated lock washer can't be pressed on cover plate unit 20.
The present invention is corresponding to provide a kind of locking nut that is used for dielectric filter, and this dielectric filter comprises: cavity; The cover plate unit, the said cavity of said cover plate unit capping forms resonant cavity, and it comprises upper cover plate and lower cover; Tuning structure comprises tuning screw rod and tuning nut; Said locking nut is arranged in said cover plate unit; And said locking nut comprises rotary body, flange and axially extending bore; Said flange and said lower cover butt; And screw togather between said rotary body and the said cover plate said upper cover plate is closely contacted with lower cover, said tuning screw rod is arranged in said axially extending bore and stretches in the said cavity.The concrete structure of this locking nut is done detailed description in Fig. 2 and preamble, repeat no more at this.
The present invention also provides a kind of tuner, comprises locking nut and tuning screw rod, and locking nut comprises rotary body, is positioned at the flange of rotary body one end and the axially extending bore that runs through locking nut, and tuning screw rod is arranged in the axially extending bore.The concrete fit structure of locking nut and tuning screw rod has been done detailed description in preamble, so repeat no more at this.
In sum, dielectric filter of the present invention comprises that one wears the locking nut of cover plate unit, the flange of this locking nut and said lower cover butt, and screw togather between said rotary body and the said cover plate upper cover plate is closely contacted with lower cover.Locking nut can tightly lock together upper cover plate and lower cover; Elastic structure between upper cover plate and the lower cover can not be upspring upper cover plate; Thereby guaranteed tight connection the between upper cover plate and the lower cover; Also make combine between cover plate unit and the cavity more tight, thereby make the intermodulation performance index of dielectric filter and Insertion Loss performance index better.Whereby, closely be connected between the cover plate unit that the present invention can make dielectric filter and the cavity, and improved the intermodulation performance index and the Insertion Loss performance index of dielectric filter, stable and reliable for performance.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (12)
1. dielectric filter comprises:
Cavity;
The cover plate unit, the said cavity of said cover plate unit capping forms resonant cavity, and it comprises upper cover plate and lower cover;
Tuning structure comprises tuning screw rod and tuning nut;
It is characterized in that; Said dielectric filter also comprises the locking nut that is arranged in said cover plate unit; Said locking nut comprises rotary body, is positioned at the flange of said rotary body one end and the axially extending bore that runs through said locking nut; Said rotary body and said cover plate unit are spirally connected, and said flange makes said upper cover plate closely contact with lower cover with said lower cover butt, and said tuning screw rod is arranged in said axially extending bore and stretches in the said cavity.
2. dielectric filter according to claim 1 is characterized in that the outer surface of said rotary body is provided with external screw thread, and said rotary body is spirally connected through said external screw thread and said cover plate unit;
Be provided with internal thread in the said axially extending bore, said axially extending bore is spirally connected through said internal thread and said tuning screw rod;
The direction of rotation of said external screw thread and said internal thread is opposite.
3. dielectric filter according to claim 2 is characterized in that, said external screw thread is a fine thread.
4. dielectric filter according to claim 1 is characterized in that, said dielectric filter also comprises the dielectric resonator with said lower cover and said cavity butt;
Elastic structure between said upper cover plate and the said lower cover, said elastic structure push said lower cover makes said lower cover closely contact with said dielectric resonator.
5. dielectric filter according to claim 1 is characterized in that, the gauge of the more said lower cover of gauge of said upper cover plate is big.
6. dielectric filter according to claim 1 is characterized in that, said flange is circle or polygon.
7. dielectric filter according to claim 1 is characterized in that said flange is provided with the flat recess that is used to rotate said locking nut.
8. dielectric filter according to claim 1 is characterized in that the axial length of said rotary body is less than the thickness of said cover plate unit.
9. dielectric filter according to claim 1 is characterized in that, said tuning nut presses in said upper cover plate, and is provided with external teeth serrated lock washer between said tuning nut and the said upper cover plate.
10. communication radio frequency device; It is characterized in that; Said communication radio frequency device comprises according to each described dielectric filter of claim 1～9; Said dielectric filter is located at the transceiver circuit part of said communication radio frequency device, is used for signal is selected, and said communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
11. a locking nut is used for dielectric filter, said dielectric filter comprises:
Cavity;
The cover plate unit, the said cavity of said cover plate unit capping forms resonant cavity, and it comprises upper cover plate and lower cover;
Tuning structure comprises tuning screw rod and tuning nut;
It is characterized in that; Said locking nut is arranged in said cover plate unit; And said locking nut rotary body, be positioned at the flange of said rotary body one end and the axially extending bore that runs through locking nut; Said rotary body and said cover plate unit are spirally connected, and said flange makes said upper cover plate closely contact with lower cover with said lower cover butt, and said tuning screw rod is arranged in said axially extending bore and stretches in the said cavity.
12. tuner; It is characterized in that; Said tuner comprises locking nut and tuning screw rod, and said locking nut comprises rotary body, is positioned at the flange of said rotary body one end and the axially extending bore that runs through locking nut, and said tuning screw rod is arranged in the said axially extending bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110340193.1A CN102509819B (en) | 2011-10-31 | 2011-10-31 | Dielectric filter, locking nut, tuning device and communication radio-frequency apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110340193.1A CN102509819B (en) | 2011-10-31 | 2011-10-31 | Dielectric filter, locking nut, tuning device and communication radio-frequency apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102509819A true CN102509819A (en) | 2012-06-20 |
| CN102509819B CN102509819B (en) | 2015-07-08 |
Family
ID=46221884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110340193.1A Active CN102509819B (en) | 2011-10-31 | 2011-10-31 | Dielectric filter, locking nut, tuning device and communication radio-frequency apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102509819B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682536A (en) * | 2012-09-13 | 2014-03-26 | 深圳市大富科技股份有限公司 | Cavity filter, tuning screw and self-locking screw |
| WO2015100541A1 (en) * | 2013-12-30 | 2015-07-09 | 华为技术有限公司 | Resonator, filter, duplexer, multiplexer and communication device |
| CN107112615A (en) * | 2014-12-31 | 2017-08-29 | 深圳市大富科技股份有限公司 | Cavity body filter, duplexer, signal receiving/transmission device, radio frequency remote equipment and tower amplifier |
| CN109786908A (en) * | 2019-03-11 | 2019-05-21 | 深圳市安特无线设备有限公司 | Tune the filter of cover board and the application cover board |
| CN110707403A (en) * | 2019-10-14 | 2020-01-17 | 深圳市大富科技股份有限公司 | Cavity filter and radio frequency regulating part |
| CN110931954A (en) * | 2019-11-20 | 2020-03-27 | 武汉凡谷电子技术股份有限公司 | High-intermodulation AFU antenna |
| CN114914649A (en) * | 2022-05-19 | 2022-08-16 | 昆山立讯射频科技有限公司 | Filter and communication apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401578C (en) * | 2000-07-14 | 2008-07-09 | 奥根公司 | Tuning screw assembly |
| CN101900158A (en) * | 2009-06-01 | 2010-12-01 | 海洋王照明科技股份有限公司 | Anti-loosing nut |
| CN102148417A (en) * | 2010-08-18 | 2011-08-10 | 深圳市大富科技股份有限公司 | Dielectric filer, dielectric resonator and cover plate unit, and communication equipment |
| CN201985225U (en) * | 2010-12-20 | 2011-09-21 | 深圳市国人射频通信有限公司 | Medium filter |
| CN202308228U (en) * | 2011-10-31 | 2012-07-04 | 深圳市大富科技股份有限公司 | Locking nut and tuning apparatus |
| CN202308244U (en) * | 2011-10-31 | 2012-07-04 | 深圳市大富科技股份有限公司 | Medium filter and communication radio frequency device |
-
2011
- 2011-10-31 CN CN201110340193.1A patent/CN102509819B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401578C (en) * | 2000-07-14 | 2008-07-09 | 奥根公司 | Tuning screw assembly |
| CN101900158A (en) * | 2009-06-01 | 2010-12-01 | 海洋王照明科技股份有限公司 | Anti-loosing nut |
| CN102148417A (en) * | 2010-08-18 | 2011-08-10 | 深圳市大富科技股份有限公司 | Dielectric filer, dielectric resonator and cover plate unit, and communication equipment |
| CN201985225U (en) * | 2010-12-20 | 2011-09-21 | 深圳市国人射频通信有限公司 | Medium filter |
| CN202308228U (en) * | 2011-10-31 | 2012-07-04 | 深圳市大富科技股份有限公司 | Locking nut and tuning apparatus |
| CN202308244U (en) * | 2011-10-31 | 2012-07-04 | 深圳市大富科技股份有限公司 | Medium filter and communication radio frequency device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682536A (en) * | 2012-09-13 | 2014-03-26 | 深圳市大富科技股份有限公司 | Cavity filter, tuning screw and self-locking screw |
| CN103682536B (en) * | 2012-09-13 | 2015-12-23 | 深圳市大富科技股份有限公司 | A kind of cavity body filter, tuning screw and Self-locking screw |
| WO2015100541A1 (en) * | 2013-12-30 | 2015-07-09 | 华为技术有限公司 | Resonator, filter, duplexer, multiplexer and communication device |
| US9979070B2 (en) | 2013-12-30 | 2018-05-22 | Huawei Technologies Co., Ltd. | Resonator, filter, duplexer, multiplexer, and communications device |
| CN107112615A (en) * | 2014-12-31 | 2017-08-29 | 深圳市大富科技股份有限公司 | Cavity body filter, duplexer, signal receiving/transmission device, radio frequency remote equipment and tower amplifier |
| CN109786908A (en) * | 2019-03-11 | 2019-05-21 | 深圳市安特无线设备有限公司 | Tune the filter of cover board and the application cover board |
| CN109786908B (en) * | 2019-03-11 | 2024-02-23 | 深圳市安特无线设备有限公司 | Tuning cover plate and filter using same |
| CN110707403A (en) * | 2019-10-14 | 2020-01-17 | 深圳市大富科技股份有限公司 | Cavity filter and radio frequency regulating part |
| CN110931954A (en) * | 2019-11-20 | 2020-03-27 | 武汉凡谷电子技术股份有限公司 | High-intermodulation AFU antenna |
| CN110931954B (en) * | 2019-11-20 | 2022-04-12 | 武汉凡谷电子技术股份有限公司 | High-intermodulation AFU antenna |
| CN114914649A (en) * | 2022-05-19 | 2022-08-16 | 昆山立讯射频科技有限公司 | Filter and communication apparatus |
| CN114914649B (en) * | 2022-05-19 | 2023-10-20 | 苏州立讯技术有限公司 | Filter and communication device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102509819B (en) | 2015-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102509819A (en) | Dielectric filter, locking nut, tuning device and communication radio-frequency apparatus | |
| CN202308228U (en) | Locking nut and tuning apparatus | |
| CN202308244U (en) | Medium filter and communication radio frequency device | |
| CN1252860C (en) | Screw fixing device | |
| KR20110018793A (en) | Rotation type cross coupling adjusting device and rf cavity filter including the same | |
| WO2010000087A1 (en) | Spark plug having pressure sensor | |
| WO2019080568A1 (en) | Coaxial connector and filter, and radio frequency device | |
| CN110960886B (en) | High-speed counter-current chromatographic separation column | |
| CN106837979A (en) | The device that is connected with anticreep loose structure | |
| US8647148B2 (en) | High frequency interface and connecting device for connecting a high-frequency cable to the high frequency interface | |
| CN108168491B (en) | A installation device for measuring turbine apex clearance sensor | |
| CN106356603B (en) | Broadband probe coaxial coupler | |
| CN201859995U (en) | Round electric connector shielding accessory | |
| KR20100102378A (en) | Screw rod holder for tuning rf-filter | |
| CN203707299U (en) | Cavity filter | |
| WO2017000255A1 (en) | Resonator and filter | |
| CN102425613A (en) | Half-type gear fastening device | |
| CN201138682Y (en) | Tuning screw nail for microwave coaxial cavity filter | |
| CN203941999U (en) | A kind of resonant cavity and resonant cavity filter | |
| CN209266605U (en) | A kind of power switch box earthing or grounding means | |
| CN110767970A (en) | Cavity filter cover plate | |
| US9799938B2 (en) | Methods and devices for connecting a resonator to a filter body | |
| CN103794941A (en) | Special radio frequency connector | |
| CN215732561U (en) | Radio frequency coaxial connector with double inner conductors | |
| US8981877B2 (en) | Locking device for a radio frequency filter tuning probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180727 Address after: 233400 Huaiyuan County Economic Development Zone, Bengbu, Anhui Patentee after: Anhui Dafu Electromechanical Technology Co., Ltd. Address before: 518104 Floors 101, 2 and A4 of A1, A2, A3 of Shajing Street, Shajing Street, Shajing Road, Shajing Industry Co., Ltd. No. 3 Industrial Zone, Shenzhen City, Guangdong Province Patentee before: Shenzhen Tat Fook Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |