CN104241752B - A kind of dielectric filter - Google Patents
A kind of dielectric filter Download PDFInfo
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- CN104241752B CN104241752B CN201410455395.4A CN201410455395A CN104241752B CN 104241752 B CN104241752 B CN 104241752B CN 201410455395 A CN201410455395 A CN 201410455395A CN 104241752 B CN104241752 B CN 104241752B
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- resonator cavity
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- dielectric filter
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Abstract
The present invention relates to a kind of dielectric filter.It includes plate-like body and cover plate, the one side of plate-like body has some resonator cavitys and harmonic oscillator, the opposite sides of plate-like body has input/output terminal respectively, described input terminal and the connection of the first resonator cavity, lead-out terminal connects with afterbody resonator cavity, all has coupling window between the most adjacent resonator cavity.It is characterized in bottom the plate-like body corresponding with coupling window all having elongated slot, tuning block it is furnished with in elongated slot, tuning block stretches in corresponding coupling window from plate-like body bottom part down below after corresponding elongated slot, there is parallel chimb bright with plate-like body bottom outer tuning block top, screw is had on chimb, also there is screw on bottom the plate-like body corresponding with this screw, in two corresponding screws, have tuning screw.This dielectric filter, the coupling window between resonator cavity can adjust.Use this dielectric filter, it is possible to decrease production cost, raising production efficiency.It is applicable on the communication equipment in unlimited base station.
Description
Technical field
The present invention relates to a kind of dielectric filter.Specifically, it is with the dielectric filter quickly adjusting coupling window size function.It is applicable on the communication equipment in unlimited base station.
Background technology
At present, dielectric filter is widely used on the communication equipment of wireless base station and on other electronic equipment.This dielectric filter includes plate-like body, the one side of plate-like body is machined with some resonator cavitys, harmonic oscillator is all had in resonator cavity, the opposite sides of plate-like body has input terminal and lead-out terminal respectively, described input terminal and the connection of the first resonator cavity, lead-out terminal connects with afterbody resonator cavity, all has coupling window between the most adjacent resonator cavity.The plate-like body one side of neighbouring described resonator cavity oral area has cover plate.Harmonic oscillator therein forms frequently with ceramic powders compacting, the standard that its shape and size perform is different from the standard that corresponding resonator cavity performs, such as: ceramic resonance perform standard GB/T1184-L, and filter cavity perform standard be GB/T1184-H so that after coupling, concordance is poor.Overcome this problem, be necessary for the coupling window degree of depth between resonator cavity is adjusted.And coupling window to be adjusted, just need to re-work resonator cavity.So, not only result in waste of material, production cost improves, and also can reduce production efficiency.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of dielectric filter.This dielectric filter, the coupling window between resonator cavity can adjust.Use this dielectric filter, it is possible to decrease production cost, raising production efficiency.
The problems referred to above of the present invention are realized by techniques below scheme:
The dielectric filter of the present invention includes plate-like body, the one side of plate-like body has some resonator cavitys, harmonic oscillator is all had in resonator cavity, the opposite sides of plate-like body has input/output terminal respectively, described input terminal and the connection of the first resonator cavity, lead-out terminal connects with afterbody resonator cavity, all has coupling window between the most adjacent resonator cavity.The plate-like body one side of neighbouring described resonator cavity oral area has cover plate.It is characterized in bottom the plate-like body corresponding with described coupling window all having elongated slot, the shape of this elongated slot and the shape adaptation coupling window.Tuning block it is furnished with in described elongated slot, the cross sectional shape of this tuning block is suitable with described elongated slot, tuning block stretches in corresponding coupling window from plate-like body bottom part down below after corresponding elongated slot, there is parallel chimb bright with plate-like body bottom outer regulating block top, screw is had on chimb, also there is screw on bottom the plate-like body corresponding with this screw, in two corresponding screws, have tuning screw.
Wherein, described resonator cavity has five, between the first resonator cavity and the second resonator cavity, between the second resonator cavity and the 3rd resonator cavity, between the 3rd resonator cavity and the 4th resonator cavity, all has coupling window between the 4th resonator cavity and the 5th resonator cavity.
There are 90 degree of flangings for forming chimb described tuning block top, and described screw is on 90 degree of flangings.
Take such scheme, have the advantage that
As can be seen from the above scheme, owing to being all machined with elongated slot on the base plate corresponding with described coupling window, the shape of this elongated slot and the shape adaptation coupling window.Tuning block it is furnished with in described elongated slot, the cross sectional shape of this tuning block is suitable with described elongated slot, tuning block stretches in corresponding coupling window below below base plate after corresponding elongated slot, regulating block top has and shows parallel chimb outside base plate, screw is had on chimb, also there is screw on the base plate corresponding with this screw, in two corresponding screws, have tuning screw.In production process, if regulation tuning screw, so that it may realize the adjustment of the coupling window degree of depth.Compared with background technology, during the regulation coupling window degree of depth, it is not required to re-work resonator cavity, not only can avoid waste of material, reduce production cost, also be greatly improved production efficiency.
Accompanying drawing explanation
Fig. 1 is the dielectric filter structural representation of the present invention；
Fig. 2 is the A-A cross-sectional schematic of Fig. 1.
Detailed description of the invention
As shown in Figure 1 and Figure 2, described dielectric filter includes plate-like body 2, the one side of plate-like body 2 has five resonator cavitys 3, between the first resonator cavity and the second resonator cavity, between the second resonator cavity and the 3rd resonator cavity, between the 3rd resonator cavity and the 4th resonator cavity, is all machined with coupling window 5 between the 4th resonator cavity and the 5th resonator cavity.Harmonic oscillator 4 it is provided with in resonator cavity 3, the opposite sides of plate-like body 2 is respectively arranged with input terminal/lead-out terminal 1, described input terminal 1 connects with the first resonator cavity, and lead-out terminal 1 connects with afterbody resonator cavity 3, is all machined with coupling window 5 between the most adjacent resonator cavity 3.Plate-like body 2 one side of neighbouring described resonator cavity 3 oral area is fixed with cover plate 6.Groove all it is machined with, the shape of this groove and the shape adaptation coupling window 5 on bottom the plate-like body 2 corresponding with described coupling window 5.Tuning block 8 it is furnished with in described groove, the cross sectional shape of this tuning block is suitable with described groove, tuning block 8 top is stretched in corresponding coupling window 5 from plate-like body 2 bottom part down after corresponding groove, regulating block 8 is machined with parallel chimb 801 bright with plate-like body 2 bottom outer below, it is machined with screw on chimb 801, also it is machined with screw on bottom the plate-like body 2 corresponding with this screw, in two corresponding screws, tuning screw 7 is installed.Wherein, described tuning block 8 is machined with 90 degree of flangings for forming chimb 801 below, and described screw is on 90 degree of flangings.During work, if regulation tuning screw 7, so that it may realize the adjustment of coupling window 5 degree of depth.
Claims (3)
1. a dielectric filter, including plate-like body (2), the one side of plate-like body (2) has some resonator cavitys (3), harmonic oscillator (4) is all had in resonator cavity (3), the opposite sides of plate-like body (2) has input terminal (1) and lead-out terminal (1) respectively, described input terminal (1) connects with the first resonator cavity, and lead-out terminal connects with afterbody resonator cavity, all has coupling window (5) between the most adjacent resonator cavity (3)；Plate-like body (2) one side of neighbouring described resonator cavity (3) oral area has cover plate (6)；It is characterized in that elongated slot is all arranged at plate-like body (2) bottom corresponding with described coupling window (5)；Tuning block (8) it is furnished with in described elongated slot, tuning block (8) top passes to stretch into after corresponding elongated slot from plate-like body (2) bottom part down and couples in window (5) accordingly, tuning block (8) has parallel chimb (801) bright with plate-like body (2) bottom outer below, chimb has screw on (801), also there is screw on plate-like body (2) bottom corresponding with this screw, in two corresponding screws, have tuning screw (7).
Dielectric filter the most according to claim 1, it is characterized in that described resonator cavity (3) has five, between the first resonator cavity and the second resonator cavity, between the second resonator cavity and the 3rd resonator cavity, between the 3rd resonator cavity and the 4th resonator cavity, between the 4th resonator cavity and the 5th resonator cavity, all have coupling window (5).
Dielectric filter the most according to claim 1 and 2, it is characterised in that described tuning block (8) has 90 degree of flangings for forming chimb (801) below, and described screw is on 90 degree of flangings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410455395.4A CN104241752B (en) | 2014-09-10 | 2014-09-10 | A kind of dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410455395.4A CN104241752B (en) | 2014-09-10 | 2014-09-10 | A kind of dielectric filter |
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| Publication Number | Publication Date |
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| CN104241752A CN104241752A (en) | 2014-12-24 |
| CN104241752B true CN104241752B (en) | 2016-08-24 |
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| CN201410455395.4A Active CN104241752B (en) | 2014-09-10 | 2014-09-10 | A kind of dielectric filter |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6404307B1 (en) * | 1999-12-06 | 2002-06-11 | Kathrein, Inc., Scala Division | Resonant cavity coupling mechanism |
| CN2598164Y (en) * | 2003-01-13 | 2004-01-07 | 奥雷通讯设备(上海)有限公司 | Electromagnetic coupling structure for coaxial cavity resonator |
| CN2929980Y (en) * | 2006-07-27 | 2007-08-01 | 奥雷通光通讯设备（上海）有限公司 | Inductive coupling regulating structure between medium loading chambers |
| CN101040403A (en) * | 2004-09-09 | 2007-09-19 | 费尔特尼克控股有限公司 | Multiband filter |
| CN201887138U (en) * | 2010-12-14 | 2011-06-29 | 四川权兴物流有限公司 | Resonant cavity of filter |
| CN204216192U (en) * | 2014-09-10 | 2015-03-18 | 江苏贝孚德通讯科技股份有限公司 | A kind of dielectric filter |
-
2014
- 2014-09-10 CN CN201410455395.4A patent/CN104241752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6404307B1 (en) * | 1999-12-06 | 2002-06-11 | Kathrein, Inc., Scala Division | Resonant cavity coupling mechanism |
| CN2598164Y (en) * | 2003-01-13 | 2004-01-07 | 奥雷通讯设备(上海)有限公司 | Electromagnetic coupling structure for coaxial cavity resonator |
| CN101040403A (en) * | 2004-09-09 | 2007-09-19 | 费尔特尼克控股有限公司 | Multiband filter |
| CN2929980Y (en) * | 2006-07-27 | 2007-08-01 | 奥雷通光通讯设备（上海）有限公司 | Inductive coupling regulating structure between medium loading chambers |
| CN201887138U (en) * | 2010-12-14 | 2011-06-29 | 四川权兴物流有限公司 | Resonant cavity of filter |
| CN204216192U (en) * | 2014-09-10 | 2015-03-18 | 江苏贝孚德通讯科技股份有限公司 | A kind of dielectric filter |
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| CN104241752A (en) | 2014-12-24 |
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