CN202564517U - Novel low frequency cavity filter - Google Patents
Novel low frequency cavity filter Download PDFInfo
- Publication number
- CN202564517U CN202564517U CN 201220186042 CN201220186042U CN202564517U CN 202564517 U CN202564517 U CN 202564517U CN 201220186042 CN201220186042 CN 201220186042 CN 201220186042 U CN201220186042 U CN 201220186042U CN 202564517 U CN202564517 U CN 202564517U
- Authority
- CN
- China
- Prior art keywords
- cover plate
- novel low
- resonant
- housing
- low frequency
- 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
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Disclosed is a novel low frequency cavity filter, comprising a housing (1) and a cover plate (2), wherein the central position of the housing (1) bottom is provided with an installing pedestal (4); the installing pedestal (4) is provided with a resonance rod (5) via welding; the cover plate (2) is provided with annular projections (7) at the position close to the inner wall of a resonant cavity; the annular projections (7), with a turning screw (6) as the center, is arranged around the turning screw (6); and the cross section of the annular projection (7) is a square. The cover plate of the novel low frequency cavity filter is preset with one annular projection. When the cover plate is covered, a capacitor is formed at the surfaces of the annular projection and the resonance rod, thereby realizing the objective of decreasing resonant frequency. The novel low frequency cavity filter features simple structure, small size, and convenient usage. The cover plate is molded in one time by adopting the integral forming technology, thereby reducing the processing procedures, avoiding material waste resulting from cutting processing, and accordingly cutting the production cost.
Description
Technical field
The utility model relates to a kind of novel low-frequency cavity body filter.
Background technology
In field of radio frequency communication, cavity body filter is usually used in the filtering and the frequency-selecting of signal, has a wide range of applications.Existing low-frequency filter is in order to reduce resonance frequency, and the end at resonant rod is provided with loading disc usually, with electric capacity and the inductance in the increase cavity, thereby reduces resonance frequency.In order to satisfy the low frequency demand of filter, need loading disc be designed into very greatly usually, this volume that directly causes filter is also along with becoming big; And need cut man-hour adding; Cause the waste of material and the lifting of cost, it is reasonable inadequately to design, and uses also very inconvenient.
The utility model content
The purpose of the utility model is to solve the deficiency of prior art, and a kind of simple in structure, novel low-frequency cavity body filter that volume is little is provided.
The purpose of the utility model realizes through following technical scheme: the novel low-frequency cavity body filter, constitute by two identical resonant cavitys, and it comprises housing and cover plate; Cover plate links to each other with housing through the coiled hair screw assemblies; The housing bottom center of each resonant cavity is provided with mounting base, is welded with resonant rod on the mounting base, is provided with through hole with the corresponding position of resonant rod on the cover plate; Tuning screw rod vertically passes through hole and stretches in the resonant rod; Inwall near resonant cavity on the cover plate is provided with annular protrusion, annular protrusion with tuning screw rod be the center be arranged at tuning screw rod around, the cross section of annular protrusion be the square.
Also be provided with the nut that is complementary with tuning screw rod on the described cover plate of the utility model.
The beneficial effect of the utility model is: on the cover board preset annular protrusion when covering cover plate, forms electric capacity on the surface of annular protrusion and the surface of resonant rod, thereby reaches the purpose that reduces resonance frequency; The design is simple in structure, volume is little, easy to use, cover plate adopts the integrated forming technique disposal molding, has reduced manufacturing procedure, the waste of material of also having avoided cut to bring, thereby practiced thrift production cost.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the upward view of the utility model cover plate;
Among the figure, 1-housing, 2-cover plate, 3-coiled hair screw assemblies, 4-mounting base, 5-resonant rod, the tuning screw rod of 6-, 7-annular protrusion, 8-nut, 9-through hole.
Embodiment
The technical scheme of the utility model is described in further detail below in conjunction with accompanying drawing: shown in Figure 2 like Fig. 1, the novel low-frequency cavity body filter; Constitute by two identical resonant cavitys; It comprises housing 1 and cover plate 2, and cover plate 2 links to each other with housing 1 through coiled hair screw assemblies 3, and housing 1 bottom centre position of each resonant cavity is provided with mounting base 4; Be welded with resonant rod 5 on the mounting base 4; Be provided with through hole 9 with resonant rod 5 corresponding positions on the cover plate 2, tuning screw rod 6 vertically passes through hole 9 and stretches in the resonant rod 5, and cover plate 2 is provided with the nut 8 that is complementary with tuning screw rod 6.Inwall near resonant cavity on the cover plate 2 is provided with annular protrusion 7, annular protrusion 7 with tuning screw rod 6 be the center be arranged at tuning screw rod 6 around, the cross section of annular protrusion 7 be the square.
Claims (2)
1. novel low-frequency cavity body filter; Constitute by two identical resonant cavitys; It is characterized in that: it comprises housing (1) and cover plate (2), and cover plate (2) links to each other with housing (1) through coiled hair screw assemblies (3), and the housing of each resonant cavity (1) bottom centre position is provided with mounting base (4); Be welded with resonant rod (5) on the mounting base (4); Cover plate (2) is gone up and the corresponding position of resonant rod (5) is provided with through hole (9), and tuning screw rod (6) vertically passes through hole (9) and stretches in the resonant rod (5), and the inwall that cover plate (2) is gone up near resonant cavity is provided with annular protrusion (7); Annular protrusion (7) with tuning screw rod (6) be the center be arranged at tuning screw rod (6) around, the cross section of annular protrusion (7) be the square.
2. novel low-frequency housing filter according to claim 1 is characterized in that: also be provided with the nut (8) that is complementary with tuning screw rod (6) on the described cover plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186042 CN202564517U (en) | 2012-04-28 | 2012-04-28 | Novel low frequency cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186042 CN202564517U (en) | 2012-04-28 | 2012-04-28 | Novel low frequency cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202564517U true CN202564517U (en) | 2012-11-28 |
Family
ID=47214139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220186042 Expired - Fee Related CN202564517U (en) | 2012-04-28 | 2012-04-28 | Novel low frequency cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202564517U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050763A (en) * | 2012-12-28 | 2013-04-17 | 成都泰格微波技术股份有限公司 | Quick welding process for cavity filter |
| CN103094649A (en) * | 2013-01-25 | 2013-05-08 | 华为技术有限公司 | Cavity filter |
| CN105449333A (en) * | 2015-10-27 | 2016-03-30 | 中国电子科技集团公司第三十八研究所 | Microwave cavity stability optimization method independent of circuit and miniaturization microwave assembly obtained based on the same |
| CN108336460A (en) * | 2018-01-24 | 2018-07-27 | 苏州市矩光达通讯技术有限公司 | A kind of microminiature 5G filters |
-
2012
- 2012-04-28 CN CN 201220186042 patent/CN202564517U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050763A (en) * | 2012-12-28 | 2013-04-17 | 成都泰格微波技术股份有限公司 | Quick welding process for cavity filter |
| CN103050763B (en) * | 2012-12-28 | 2016-05-25 | 成都泰格微波技术股份有限公司 | Cavity body filter rapid welding technique |
| CN103094649A (en) * | 2013-01-25 | 2013-05-08 | 华为技术有限公司 | Cavity filter |
| CN103094649B (en) * | 2013-01-25 | 2016-12-28 | 华为技术有限公司 | Cavity body filter |
| CN105449333A (en) * | 2015-10-27 | 2016-03-30 | 中国电子科技集团公司第三十八研究所 | Microwave cavity stability optimization method independent of circuit and miniaturization microwave assembly obtained based on the same |
| CN108336460A (en) * | 2018-01-24 | 2018-07-27 | 苏州市矩光达通讯技术有限公司 | A kind of microminiature 5G filters |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202564517U (en) | Novel low frequency cavity filter | |
| CN203103474U (en) | Light cavity filter | |
| CN102354780A (en) | Cavity filter and communication device | |
| CN201038287Y (en) | Coaxial cavity filter | |
| CN203466273U (en) | Cavity filter | |
| CN104716410A (en) | Cavity filter | |
| CN102623783A (en) | Novel resonant pole of cavity filter | |
| CN202721253U (en) | Novel cavity filter resonant rod | |
| CN203707298U (en) | Cavity filter | |
| CN202871952U (en) | Cavity filter capable of improving power capacity | |
| CN204130670U (en) | A kind of low intermodulation structure of high power being applicable to cavity body filter | |
| CN203039076U (en) | Quarter-wave coaxial resonator structure | |
| CN204144408U (en) | A kind of multi-layer efficient filter | |
| CN102881977A (en) | Single-cavity filter with load coupling plate | |
| CN204375895U (en) | Cavity body filter | |
| CN204596930U (en) | Filter and harmonic oscillator thereof | |
| CN203707297U (en) | Small volume cavity filter | |
| CN204375896U (en) | Cavity body filter | |
| CN203916266U (en) | A kind of filter housing of filter | |
| CN202662760U (en) | Novel strong coupling filter | |
| CN202746041U (en) | Air filter shell structure with high plane modal frequency | |
| CN104056927A (en) | Novel multifunctional intelligent die | |
| CN104056926A (en) | Novel multifunctional intelligent die | |
| CN104139027A (en) | Intelligent multifunctional mold | |
| CN104056943A (en) | Novel multifunctional mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Novel low frequency cavity filter Effective date of registration: 20130910 Granted publication date: 20121128 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Chengdu Tiger Microwave Technology Co., Ltd. Registration number: 2013510000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150707 Granted publication date: 20121128 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Chengdu Tiger Microwave Technology Co., Ltd. Registration number: 2013510000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |