CN202940319U - High-reliable TM mode single-ended short circuit resonator - Google Patents
High-reliable TM mode single-ended short circuit resonator Download PDFInfo
- Publication number
- CN202940319U CN202940319U CN 201220618324 CN201220618324U CN202940319U CN 202940319 U CN202940319 U CN 202940319U CN 201220618324 CN201220618324 CN 201220618324 CN 201220618324 U CN201220618324 U CN 201220618324U CN 202940319 U CN202940319 U CN 202940319U
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- China
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- harmonic oscillator
- oscillator body
- metal connecting
- connecting sheet
- connection plate
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Abstract
The utility model relates to a high-reliable TM mode single-ended short circuit resonator, comprising a harmonic oscillator body which is a circular pipe. The short circuit resonator is characterized in that a lower end of the harmonic oscillator body is provided with a metal connection plate which provides convenience for connecting with a cavity bottom of a resonant cavity. The metal connection plate is round, and a round bulge matched with an internal diameter of the harmonic oscillator body is disposed on a center of a surface of the metal connection plate. A diameter of the metal connection plate is smaller than an external diameter of the harmonic oscillator body, so that when a lower end of the harmonic oscillator body is connected with an upper surface of the metal connection plate on outer sides of the round bulge, a portion where a lower end surface of the harmonic oscillator body is larger than the metal connection plate is suspended. The center of the metal connection plate is provided with screw holes through which the metal connection plate is fixed on the cavity bottom of the resonant cavity by bolts. The high-reliable TM mode single-ended short circuit resonator can ensure normal operation of a filter and reduce maintenance cost. The high-reliable TM mode single-ended short circuit resonator is suitable for microwave filters in wireless communication base stations.
Description
Technical field
The utility model relates to a kind of microwave filter.Specifically, be the single-ended short circuit resonator of TM mould of the high reliability in microwave filter in wireless communication base station.
Background technology
At present, the microwave filter that uses in wireless communication base station is all traditional microwave filter.This microwave filter is made of resonant cavity and the harmonic oscillator that is arranged in resonant cavity.Described resonant cavity is circular, and described harmonic oscillator is pipe, links together at the bottom of the chamber of harmonic oscillator lower end and resonant cavity.Wherein, the method that adopts that is connected between harmonic oscillator and resonant cavity is, first adopts the mode of dusting to spray one deck silver powder at the bottom of the chamber of resonant cavity, and the recycling tin cream will both weld together.Although adopt this method can realize the harmonic oscillator lower end with at the bottom of resonator between be connected.But because harmonic oscillator is nonmetal medium, and resonant cavity is aluminium alloy, and both material is different, the coefficient of expansion is different, when the operating ambient temperature amplitude of variation was larger, the weld at the bottom of harmonic oscillator lower end and resonator was easy to crack, made whole filter damage, can't work.Again due to the silver powder poor adhesive force, the weld cracking between also easily aggravating at the bottom of harmonic oscillator lower end and resonator after welding.In addition, owing to taking direct welding between harmonic oscillator lower end and resonant cavity, in case cracking between at the bottom of a harmonic oscillator and corresponding resonator just must be scrapped whole filter, thereby can improve the maintenance cost of wireless communication base station.
The utility model content
Problem to be solved in the utility model is to provide a kind of single-ended short circuit resonator of TM mould of high reliability.Adopt the single-ended short circuit resonator of TM mould of this high reliability, can avoid the weld cracking situation at the bottom of harmonic oscillator lower end and resonator to occur, guarantee the normal operation of filter, reduce the maintenance cost of wireless communication base station.
For addressing the above problem, take following technical scheme:
The single-ended short circuit resonator of the TM mould of high reliability of the present utility model comprises the harmonic oscillator body, and this harmonic oscillator body is pipe, is characterized in that harmonic oscillator body lower end has to be convenient to and the metal connecting sheet that is connected at the bottom of resonator.Described metal connecting sheet is circular, and there is the circular protrusions that matches with harmonic oscillator body internal diameter at its upper surface center.The diameter of metal connecting sheet is less than the external diameter of harmonic oscillator body, and after making harmonic oscillator body lower end be connected to the metal connecting sheet upper surface in the described circular protrusions outside, harmonic oscillator body lower surface is hanging shape greater than the part of metal connecting sheet.The center of metal connecting sheet has is convenient to the screw that is fixed by at the bottom of screw and resonator.
Described metal connecting sheet is stainless steel products.
Take such scheme, have the following advantages:
Can be found out by such scheme, be provided with in harmonic oscillator body lower end due to the utility model and be convenient to and the metal connecting sheet that is connected at the bottom of resonator, described metal connecting sheet is circular, there is the circular protrusions that matches with harmonic oscillator body internal diameter at its upper surface center, and harmonic oscillator body lower end is connected to the brace upper surface in the described circular protrusions outside.Being connected between harmonic oscillator body lower end and metal connecting sheet, can be by making the harmonic oscillator lower end closely be stuck on metal connecting sheet and welding realizes.And metal connecting sheet is stainless steel products, and the coefficient of expansion of the stainless coefficient of expansion and harmonic oscillator body is close, and is not easy to crack after welding.Again due to the metal connecting sheet resonant cavity be all metal material and both between closely link together by screw.Like this, even the operating ambient temperature amplitude of variation is larger, also difficult drop-off after welding.Thereby guaranteed the normal operation of filter.
Again due to the diameter of the metal connecting sheet external diameter less than the harmonic oscillator body, after making harmonic oscillator body lower end be connected to the metal connecting sheet upper surface in the described circular protrusions outside, harmonic oscillator body lower surface is hanging shape greater than the part of metal connecting sheet.Thereby, dwindled the contact area between harmonic oscillator body lower end and metal connecting sheet, the impact that reduced that metal connecting sheet shrinks at low temperatures, the pulling force that produces of expanding under high temperature brings on the harmonic oscillator body.
In addition, because being processed with, the center of metal connecting sheet is convenient to the screw that is fixed by at the bottom of bolt and resonator, fixing and dismounting between can realizing at the bottom of harmonic oscillator and resonator by screw and this screw, in case the cracking situation between harmonic oscillator and resonant cavity occurs, can harmonic oscillator be taken off by screwing screw, change a harmonic oscillator of the present utility model and get final product.Compare with background technology, need not scrap whole filter, thereby reduced the maintenance cost of wireless communication base station.
Description of drawings
Fig. 1 is the single-ended short circuit resonator structure of the TM mould schematic diagram of high reliability of the present utility model.
Embodiment
As shown in Figure 1, the single-ended short circuit resonator of the TM mould of high reliability of the present utility model comprises the harmonic oscillator body 3 that is shaped as pipe.Described harmonic oscillator body 3 is nonmetallic materials, and its lower end is provided with metal connecting sheet 5.Described metal connecting sheet 5 is circular, its upper surface center is processed with circular protrusions 1, the inner circle equal diameters of the diameter of this circular protrusions and harmonic oscillator body 3, described circular protrusions 1 snaps in the inner chamber of harmonic oscillator body 3 lower ends, and harmonic oscillator body 3 lower ends are connected to metal connecting sheet 5 upper surfaces in described circular protrusions 1 outside.Because harmonic oscillator body 3 is nonmetal medium, more closely be connected between at the bottom of the chamber that makes harmonic oscillator body 3 and resonant cavity 2, be processed with screw at the center of metal connecting sheet 5, make on metal connecting sheet 5 closely is fixed at the bottom of the chamber of resonant cavity 2 by screw 4 and this screw.Like this, even the cracking situation appears in 5 of harmonic oscillator body 3 and metal connecting sheets, can by screw screw 4, change a harmonic oscillator body 3 and get final product.
Affect for reducing the pulling force that after metal connecting sheet 5 low-temperature shrinks, high-temperature expansion, harmonic oscillator body 3 is produced, the diameter of metal connecting sheet 5 is less than the external diameter of harmonic oscillator body 3, after making harmonic oscillator body 3 lower ends be connected to metal connecting sheet 5 upper surfaces in described circular protrusions 1 outside, harmonic oscillator body 3 lower surfaces are hanging shape greater than the part of metal connecting sheet 5.
For between at the bottom of the chamber that makes metal connecting sheet 5 and resonant cavity 2 stressed evenly, the lower surface of described metal connecting sheet 5 is the plane.
Described metal connecting sheet 5 is stainless steel products.Also can select as required other metal material.
Claims (2)
1. the single-ended short circuit resonator of the TM mould of high reliability, comprise harmonic oscillator body (3), and this harmonic oscillator body is pipe, it is characterized in that there is the metal connecting sheet (5) that is connected at the bottom of the chamber of being convenient to resonant cavity (2) harmonic oscillator body (3) lower end; Described metal connecting sheet (5) is circular, and there is the circular protrusions (1) that matches with harmonic oscillator body (3) internal diameter at its upper surface center; The diameter of metal connecting sheet (5) is less than the external diameter of harmonic oscillator body (3), after making harmonic oscillator body (3) lower end be connected to metal connecting sheet (5) upper surface in described circular protrusions (1) outside, harmonic oscillator body (3) lower surface is hanging shape greater than the part of metal connecting sheet (5); There is the screw that is fixed at the bottom of the chamber of being convenient to by screw (4) and resonant cavity (2) at the center of metal connecting sheet (5).
2. the single-ended short circuit resonator of the TM mould of high reliability according to claim 1, is characterized in that described metal connecting sheet (5) is stainless steel products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220618324 CN202940319U (en) | 2012-11-21 | 2012-11-21 | High-reliable TM mode single-ended short circuit resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220618324 CN202940319U (en) | 2012-11-21 | 2012-11-21 | High-reliable TM mode single-ended short circuit resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940319U true CN202940319U (en) | 2013-05-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220618324 Expired - Fee Related CN202940319U (en) | 2012-11-21 | 2012-11-21 | High-reliable TM mode single-ended short circuit resonator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940319U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916240A (en) * | 2012-11-21 | 2013-02-06 | 江苏贝孚德通讯科技股份有限公司 | High-reliability TM mode single-ended short circuiting resonator |
| CN102931464A (en) * | 2012-11-21 | 2013-02-13 | 江苏贝孚德通讯科技股份有限公司 | Single-ended short circuit dielectric resonator |
-
2012
- 2012-11-21 CN CN 201220618324 patent/CN202940319U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916240A (en) * | 2012-11-21 | 2013-02-06 | 江苏贝孚德通讯科技股份有限公司 | High-reliability TM mode single-ended short circuiting resonator |
| CN102931464A (en) * | 2012-11-21 | 2013-02-13 | 江苏贝孚德通讯科技股份有限公司 | Single-ended short circuit dielectric resonator |
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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: 20130515 Termination date: 20211121 |