CN103531879A - Resonator - Google Patents
Resonator Download PDFInfo
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- CN103531879A CN103531879A CN201310504848.3A CN201310504848A CN103531879A CN 103531879 A CN103531879 A CN 103531879A CN 201310504848 A CN201310504848 A CN 201310504848A CN 103531879 A CN103531879 A CN 103531879A
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Abstract
The invention relates to a resonator. The resonator comprises a resonant cavity, wherein a cover plate is arranged at an opening of the resonant cavity, and a resonant column is arranged inside the resonant cavity. A screw hole is formed in the cover plate opposite to the upper end of the resonant column, and a resonant screw is arranged inside the screw hole. The resonator is characterized in that an upper cylindrical bulge is arranged at the center of the bottom of the resonant cavity, an upper round pit is formed in the lower end of the resonant column, threads are formed on both the inner wall of the round pit and the outer side surface of the upper cylindrical bulge through machining, and the upper cylindrical bulge is screwed in the round pit. Screw holes with identical diameters are formed in the center of the bottom of the resonant cavity, the center of the upper cylindrical bulge and the center of the lower end of the resonant column, a fastening screw is arranged inside the screw holes, and the front end of the fastening screw is screwed in the screw holes at the center of the bottom of the resonant cavity, the center of the upper cylindrical bulge and the center of the lower end of the resonant column sequentially, so that the lower end of the resonant column and the bottom of the resonant cavity are matched closely. With the adoption of the resonator, the fastening reliability between the resonant column and the resonant cavity can be improved. The resonator is applicable to communication equipment of a wireless base station.
Description
Technical field
The present invention relates to a kind of resonator.Specifically, be mounted on the communication equipment of wireless base station, be used for the resonator of filtering harmonic wave.
Background technology
At wireless communication field, all know, along with developing rapidly of wireless communication system, comprise the third generation in recent years, the 4th generation communication system foundation and popularization, quality requirement to communication system improves constantly, especially more and more higher to the inhibition interference requirement between different system and frequency range, especially harsh to the passive intermodulation index request of the Primary Component in communication system------radio-frequency filter, because referring to passive device, passive intermodulation injecting a kind of input signal of introducing in high-power signal situation and differential distortion.Intermodulation distortion is wherein non-line linearity, and it will produce interference between different frequency, thereby affects the quality of communication system.Rf-resonator wherein comprises resonant cavity, and the oral area of resonant cavity is provided with cover plate, is provided with resonant column between at the bottom of the chamber of described cover plate and resonant cavity.On the cover plate relative with resonant column upper end, be processed with screw, be furnished with tuning screw in screw, described screw inner end is stretched in described resonant column upper end.According to the generation principle of cavity body filter resonance frequency, resonant column jointly produces resonance frequency together with closed metal cavity, thereby realize the required frequency of filter, and will realize resonant column, jointly produce required resonance frequency together with closed metal cavity, just need between resonant column and resonant cavity, to there is good contact and conductivity.
And in traditional resonator, resonant column with at the bottom of resonator between to be connected be mostly to adopt first at the bottom of resonant cavity chamber, resonant column lower end processing screw hole respectively, relend and help screw that the two is linked together.Although adopt, can realize in this way resonant column lower end and being connected at the bottom of resonator, but this method of attachment is subject to the impact of flatness, roughness and screw lock dynamics of resonant column lower surface larger, has the hidden danger such as resonant column and resonant cavity loose contact, poor electric conductivity.Owing to realizing being connected between resonant column and resonant cavity near a screw, once stripped thread appears in screw, will cause fastening failure conditions between resonant column and resonant cavity again, therefore, adopt this connected mode, reliability is poor.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of resonator.This resonator, can eliminate resonant column and resonant cavity loose contact, poor electric conductivity hidden danger, improves the fastening reliability between resonant column and resonant cavity.
For addressing the above problem, take following technical scheme:
Resonator of the present invention comprises resonant cavity, and the oral area of resonant cavity has cover plate, has resonant column between at the bottom of the chamber of described cover plate and resonant cavity.On the cover plate relative with resonant column upper end, have screw, have tuning screw in screw, described tuning screw inner end is stretched in described resonant column upper end.Be characterized in that there is cylindrical projection at described resonant cavity Qiang Di center, there is pit in the circle corresponding with described cylindrical projection described resonant column lower end, in described circle, the diameter of pit and the diameter of described cylindrical projection are suitable, and on the inwall of described circular pit and on the lateral surface of described cylindrical projection, be all processed with screw thread, described cylindrical projection screws in described circular pit; All there is the screw that diameter is identical at described resonant cavity Qiang Di center, the center of cylindrical projection and the center, lower end of described resonant column, in described screw, there is trip bolt, described trip bolt front end screws in the screw at the center of resonant cavity Qiang Di center, cylindrical projection and the center, lower end of described resonant column successively, together with closely cooperating between making at the bottom of the chamber of described resonant column lower end and resonant cavity.
Take such scheme, have the following advantages:
As can be seen from the above scheme, because described resonant cavity Qiang Di center is processed with cylindrical projection, described resonant column lower end is processed with pit in the circle corresponding with described cylindrical projection, in described circle, the diameter of pit and the diameter of described cylindrical projection are suitable, and on the inwall of described circular pit and on the cylindrical of described cylindrical projection, be all processed with screw thread, described cylindrical projection screws in described circular pit.At the center, lower end of described resonant cavity Qiang Di center, cylindrical projection center and described resonant column, be all processed with the screw that diameter is identical again, in described screw, is furnished with trip bolt, described trip bolt front end screws in the screw at center, lower end of resonant cavity Qiang Di center, cylindrical projection center and described resonant column successively, thereby greatly increased the contact area between resonant column and resonant cavity, thereby eliminated resonant column and resonant cavity Contact is bad, the hidden danger of poor electric conductivity.Again because one side Qiang Di center is processed with cylindrical projection, described resonant column lower end is processed with circular upper pit, and be all processed with screw thread on the inwall of described circular pit and on the cylindrical of described cylindrical projection, described cylindrical projection, by being threaded in described circular pit, makes to have realized one-level between resonant column and resonant cavity fastening.On the other hand, at the center, lower end of described resonant cavity Qiang Di center, cylindrical projection center and described resonant column, be all processed with the screw that diameter is identical again, in described screw, is furnished with screw, described screw front end screws in the screw at center, lower end of resonant cavity Qiang Di center, cylindrical projection center and described resonant column successively, thereby the secondary of having realized between resonant column and resonant cavity is fastening.Fastening by above two-stage, together with closely cooperating between making at the bottom of the chamber of described resonant column lower end and resonant cavity, thereby greatly improved reliability fastening between resonant column and resonant cavity.
Accompanying drawing explanation
Fig. 1 is of the present invention kind of resonator structure schematic diagram.
Embodiment
As shown in Figure 1, of the present invention kind of resonator comprises resonant cavity 1, and the oral area of resonant cavity 1 is fixed with cover plate 3, is provided with resonant column 4 between at the bottom of the chamber of described cover plate 3 and resonant cavity 1.On the cover plate 3 relative with resonant column 4 upper ends, be processed with screw, be rotary with tuning screw 2 in screw, the inner end of described tuning screw 2 is stretched in described resonant column 4 upper ends.Described resonant cavity 1 Qiang Di center is processed with cylindrical projection 5, at the bottom of the chamber of described cylindrical projection 5 and described resonant cavity 1, form as one, described resonant column 4 lower ends are processed with pit in the circle corresponding with described cylindrical projection 5, in described circle, the diameter of the diameter of pit and described cylindrical projection 5 is suitable, and on the inwall of described circular pit and on the cylindrical of described cylindrical projection 5, be all processed with screw thread, described cylindrical projection 5 screws in described circular pit; Described resonant cavity 1 Qiang Di center, the center of cylindrical projection 5 and the center, lower end of described resonant column 4 are all processed with the screw that diameter is identical, in described screw, is furnished with trip bolt 6, the front end of described trip bolt 6 screws in the screw at resonant cavity 1 Qiang Di center, the center of cylindrical projection 5 and the center, lower end of described resonant column 4 successively, together with closely cooperating between making at the bottom of the chamber of described resonant column 4 lower ends and resonant cavity 1.
Claims (1)
1. a resonator, comprises resonant cavity (1), and the oral area of resonant cavity (1) has cover plate (3), has resonant column (4) in resonant cavity (1); On the cover plate (3) relative with resonant column (4) upper end, have screw, have tuning screw (2) in screw, described tuning screw (2) inner end is stretched in described resonant column (4) upper end; It is characterized in that there is cylindrical projection (5) at described resonant cavity (1) Qiang Di center, there is pit in the circle corresponding with described cylindrical projection (5) described resonant column (4) lower end, in described circle, the diameter of pit and the diameter of described cylindrical projection are suitable, and on the inwall of described circular pit and on the lateral surface of described cylindrical projection (5), be all processed with screw thread, described cylindrical projection (5) screws in described circular pit; All there is with the center, lower end of described resonant column (4) screw that diameter is identical at the center of described resonant cavity (1) Qiang Di center, cylindrical projection (5), in described screw, there is trip bolt (6), described trip bolt (6) front end screws in the screw at the center of resonant cavity (1) Qiang Di center, cylindrical projection (5) and the center, lower end of described resonant column (4) successively, together with closely cooperating between making at the bottom of the chamber of described resonant column (4) lower end and resonant cavity (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310504848.3A CN103531879A (en) | 2013-10-24 | 2013-10-24 | Resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310504848.3A CN103531879A (en) | 2013-10-24 | 2013-10-24 | Resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103531879A true CN103531879A (en) | 2014-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310504848.3A Pending CN103531879A (en) | 2013-10-24 | 2013-10-24 | Resonator |
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| CN (1) | CN103531879A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018059336A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Screw limit structure and tunable filter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001043224A1 (en) * | 1999-11-17 | 2001-06-14 | Control Devices, Inc. | Improved dielectric mounting system |
| CN202167593U (en) * | 2011-04-22 | 2012-03-14 | 深圳市大富科技股份有限公司 | Cavity filter, communication device, communication device cover plate assembly and tuning structure |
| CN203119067U (en) * | 2013-01-25 | 2013-08-07 | 华为技术有限公司 | Cavity filter |
| CN203553323U (en) * | 2013-10-24 | 2014-04-16 | 江苏贝孚德通讯科技股份有限公司 | A resonator |
-
2013
- 2013-10-24 CN CN201310504848.3A patent/CN103531879A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001043224A1 (en) * | 1999-11-17 | 2001-06-14 | Control Devices, Inc. | Improved dielectric mounting system |
| CN202167593U (en) * | 2011-04-22 | 2012-03-14 | 深圳市大富科技股份有限公司 | Cavity filter, communication device, communication device cover plate assembly and tuning structure |
| CN203119067U (en) * | 2013-01-25 | 2013-08-07 | 华为技术有限公司 | Cavity filter |
| CN203553323U (en) * | 2013-10-24 | 2014-04-16 | 江苏贝孚德通讯科技股份有限公司 | A resonator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018059336A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Screw limit structure and tunable filter |
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Application publication date: 20140122 |