CN104836000B - A kind of bimodulus dielectric filter - Google Patents
A kind of bimodulus dielectric filter Download PDFInfo
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- CN104836000B CN104836000B CN201410045391.9A CN201410045391A CN104836000B CN 104836000 B CN104836000 B CN 104836000B CN 201410045391 A CN201410045391 A CN 201410045391A CN 104836000 B CN104836000 B CN 104836000B
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- dielectric resonator
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Abstract
The present invention relates to a kind of bimodulus dielectric filters, by box body, dielectric resonator and cover board composition, several cavitys are equipped in the box body, box body is equipped with input adapter and out splice going splice, the input adapter and out splice going splice are separately connected a coupling probe, coupling probe is fixed on by supporting block on inboard wall of cartridge, the dielectric resonator is fixed on the inside of cover board, and mounted on the middle part of a cavity, the cover board is fixed on box body, cover board, single cavity where dielectric resonator and dielectric resonator forms a resonant cavity, the volume of dielectric resonator and the volumetric ratio of single cavity where dielectric resonator are greater than or equal to 1：3.The present invention is using dielectric resonator, when the volume and the volumetric ratio of single cavity where dielectric resonator of dielectric resonator are greater than or equal to 1：When 3, a dielectric resonator can generate resonance frequency point similar in two frequencies simultaneously, and number of resonators reduces half, and the volume of filter also reduces half.
Description
Technical field
The present invention relates to a kind of bimodulus dielectric filters.
Background technology
In the wireless communication systems such as base station and repeater, filter is an indispensable important devices, its master
Function is wanted to have at 2 points：One, for receiving, unwanted interference signal is filtered, ensures that the signal of system is pure；Two, for emitting,
The signal that may interfere with other communication systems that system generates is curbed.
Currently, communication system is more and more, GSM (global system for mobile communications), CDMA (claim CDMA, are wireless
The technology used in communication), WCDMA (wideband code division multiple access is a kind of third generation wireless communication technique), (3GPP is drilled LTE for a long time
Into technology) etc. systems constantly release, frequency spectrum is increasingly closer to, this requirement to filter is also higher and higher, in order to reach high suppression
System requires, and filter has to greater number of resonator, the resonator that existing filter is all useful 18 or more, resonator
Quantity is more, and the volume of filter is also bigger, and weight is also heavier, and processing cost, transportation cost can also increase, particularly with boat
For the fields such as pocket, military affairs, the filter of massiveness can not use, so ensureing the same of filter squareness factor
When, volume and weight is substantially reduced, one needs the problem solved at the communications industry.
And had to when designing filter with sufficient amount of resonator, but the quantity of resonator is more, filtering
The insertion loss of device just will increase, and volume also will increase because the loss of filter be it is accumulative by all single resonance chambers and
At, therefore low-loss and high inhibition are conflicting two indices, the metal of existing metal resonators and metal case composition
Filter can not accomplish that the two is taken into account.
(1) the technical issues of solving
The purpose of the present invention is overcoming defect of the existing technology, a kind of bimodulus dielectric filter is provided.
Realizing the technical solution of the object of the invention is：A kind of bimodulus dielectric filter, by box body, dielectric resonator and cover board
Composition, the box body is interior to be equipped with several cavitys, and box body is equipped with input adapter and out splice going splice, and the input adapter and output connect
Head is separately connected a coupling probe, and coupling probe is fixed on by supporting block on inboard wall of cartridge, and the dielectric resonator is fixed
On the inside of cover board, and mounted on the middle part of a cavity, the cover board is fixed on box body, cover board, dielectric resonator and medium
Single cavity where resonator forms a resonant cavity, and the dielectric constant of medium is between 20~1000, dielectric resonator
Volume and dielectric resonator where the volumetric ratio of single cavity be greater than or equal to 1：3, dielectric resonator can generate two simultaneously
Resonance frequency point similar in frequency, and the two frequency magnatic field directions are parallel, coupled；Debugging spiral shell is installed on the cover board
Silk, dielectric resonator are fixed by screw and cover board.
As an optimization, the dielectric resonator is bonded by medium and support column, and support column is fixed on the cover board.
Beneficial effects of the present invention：The present invention using dielectric resonator, the dielectric constant of medium 20~1000 it
Between, when the volume and the volumetric ratio of single cavity where dielectric resonator of dielectric resonator are greater than or equal to 1：When 3, a medium
Resonator can generate resonance frequency point similar in two frequencies simultaneously, be equivalent to a dielectric resonator and substitute two conventional resonants
Device, i.e., so-called bimodulus phenomenon, and also the two frequency magnatic field directions are parallel, can be coupled, and the Q values of two frequencies are several
It will not reduce.Under the requirement of same electrical performance index, the dielectric resonator quantity used in the present invention reduces half, simultaneously
The volume of filter also reduces half.
Description of the drawings
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, wherein
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the side sectional view of the present invention.
Wherein：1, medium, 2, box body, 3, cover board, 4, coupling probe, 5, supporting block, 6, input adapter, 7, debugging screw,
8, screw, 9, out splice going splice, 10, support column.
Specific implementation mode
As shown in Figure 1, 2, the present invention is a kind of bimodulus dielectric filter, is made of box body 2, dielectric resonator and cover board 3,
Several cavitys are equipped in box body 2, box body 2 is equipped with input adapter 6 and out splice going splice 9, and input adapter 6 and out splice going splice 9 are distinguished
A coupling probe 4 is connected, coupling probe 4 is fixed on by supporting block 5 on 2 inner wall of box body, and dielectric resonator is by medium 2 and branch
Dagger 10 is bonded, and between 20~1000, support column 10 is fixed on by screw 8 in cover board 3 dielectric constant of medium 1
Side, and mounted on the middle part of a cavity, cover board 3 is fixed on box body 2, and debugging screw 7 is equipped on cover board 3, cover board 3 is situated between
Single cavity where matter resonator and dielectric resonator forms a resonant cavity, the volume and dielectric resonance of dielectric resonator
The volumetric ratio of single cavity is greater than or equal to 1 where device：3.For example, dielectric resonator volume is 203 cubic centimetres, dielectric resonance
The volume of cavity where device is 367 cubic centimetres.
After the present invention is in use, connect input adapter 6 and out splice going splice 9 with external equipment, adjusted by debugging screw 7
Parameter is saved, when work, input adapter 6 inputs a suitable frequency signal, and coupling probe 4 is flat with dielectric resonator magnetic direction
Row, coupling probe 4 carry out magnetic coupling, and to trap signal, because using dielectric resonator, the dielectric constant of medium exists
Between 20~1000, when the volume and the volumetric ratio of single cavity where dielectric resonator that adjust dielectric resonator are greater than or equal to
1：When 3, a dielectric resonator can generate resonance frequency point similar in two frequencies simultaneously, be equivalent to a dielectric resonator and substitute
Two conventional resonators, i.e., so-called bimodulus phenomenon, and also the two frequency magnatic field directions are parallel, can be coupled, and two
The Q values of a frequency hardly reduce.Under the requirement of same electrical performance index, the dielectric resonator quantity used in the present invention subtracts
It is a half, while the volume of filter also reduces half.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the present invention
Within the scope of shield.
Claims (2)
1. a kind of bimodulus dielectric filter, it is characterised in that：It is made of box body (2), dielectric resonator and cover board (3), the box
It is equipped with several cavitys in body (2), box body (2) is equipped with input adapter (6) and out splice going splice (9), the input adapter (6) and defeated
Going out connector (9) and is separately connected a coupling probe (4), coupling probe (4) is fixed on by supporting block (5) on box body (2) inner wall,
The dielectric resonator is fixed on the inside of cover board (3), and mounted on the middle part of a cavity, and the cover board (3) is fixed on box body
(2) on, the single cavity where cover board (3), dielectric resonator and dielectric resonator forms a resonant cavity, the dielectric of medium
Between 20~1000, the volume of dielectric resonator and the volumetric ratio of single cavity where dielectric resonator are greater than or equal to constant
1：3, dielectric resonator can generate resonance frequency point similar in two frequencies simultaneously, and the two frequency magnatic field directions are parallel, into
Row coupling；Debugging screw (7) is installed, dielectric resonator is fixed by screw (8) and cover board (3) on the cover board (3).
2. a kind of bimodulus dielectric filter according to claim 1, it is characterised in that：The dielectric resonator is by medium
(1) it is bonded with support column (10), support column (10) is fixed on cover board (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410045391.9A CN104836000B (en) | 2014-02-08 | 2014-02-08 | A kind of bimodulus dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410045391.9A CN104836000B (en) | 2014-02-08 | 2014-02-08 | A kind of bimodulus dielectric filter |
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| Publication Number | Publication Date |
|---|---|
| CN104836000A CN104836000A (en) | 2015-08-12 |
| CN104836000B true CN104836000B (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410045391.9A Active CN104836000B (en) | 2014-02-08 | 2014-02-08 | A kind of bimodulus dielectric filter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244592B (en) * | 2015-10-30 | 2019-01-22 | 成都天奥电子股份有限公司 | A kind of bonding reinforces the method and device thereof of dielectric resonator |
| CN105633520B (en) * | 2016-03-01 | 2018-09-21 | 西南交通大学 | A kind of double frequency narrow-band bandpass dielectric filter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097670A (en) * | 2011-02-18 | 2011-06-15 | 成都泰格微波技术股份有限公司 | Hybrid TM (Transverse Magnetic) mode dielectric filter |
| CN103296343A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Filter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4635709A (en) * | 1985-12-03 | 1987-01-13 | The United States Of America As Represented By The Secretary Of The Air Force | Dual mode heat exchanger |
| CA2048404C (en) * | 1991-08-02 | 1993-04-13 | Raafat R. Mansour | Dual-mode filters using dielectric resonators with apertures |
| US6836198B2 (en) * | 2001-12-21 | 2004-12-28 | Radio Frequency Systems, Inc. | Adjustable capacitive coupling structure |
| US9184479B2 (en) * | 2011-05-19 | 2015-11-10 | Ace Technologies Corporation | Multi mode filter for realizing wide band using capacitive coupling / inductive coupling and capable of tuning coupling value |
| CN102593561B (en) * | 2012-02-13 | 2016-01-20 | 江苏贝孚德通讯科技股份有限公司 | The bimodulus coated by dielectric cavity filter of circular corner cut |
| CN202487730U (en) * | 2012-02-13 | 2012-10-10 | 江苏贝孚德通讯科技股份有限公司 | Dual-mode medium loading cavity filter with circular cut corners |
| US9190705B2 (en) * | 2012-03-26 | 2015-11-17 | The Chinese University Of Hong Kong | Dual mode dielectric resonator filter having plural holes formed therein for receiving tuning and coupling screws |
| CN102881983B (en) * | 2012-10-18 | 2016-08-17 | 宁波泰立电子科技有限公司 | A kind of TM dielectric resonator single, double resonant mode structure |
| CN203260701U (en) * | 2013-04-16 | 2013-10-30 | 深圳光启创新技术有限公司 | Cavity filter |
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2014
- 2014-02-08 CN CN201410045391.9A patent/CN104836000B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097670A (en) * | 2011-02-18 | 2011-06-15 | 成都泰格微波技术股份有限公司 | Hybrid TM (Transverse Magnetic) mode dielectric filter |
| CN103296343A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Filter |
Non-Patent Citations (1)
| Title |
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| 双模介质滤波器的研究;郭辉平;《中国优秀硕士学位论文全文数据库信息科技辑》;20120715(第7期);第1-64页 * |
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| CN104836000A (en) | 2015-08-12 |
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Address after: Room 10C-A81, Block B, Chuangzhi Building, 17 Xinghuo Road, Jiangbei New District, Nanjing, Jiangsu Province, 210000 Patentee after: Nanjing Fu Ke communication equipment Co., Ltd Address before: Room 502, Unit 1, 102 Rehen Road, Xiaguan District, Nanjing City, Jiangsu Province Patentee before: Nanjing Fu Ke communication equipment Co., Ltd |
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