CN106571505A - Band-stop filter capable of eliminating interference between different service providers - Google Patents
Band-stop filter capable of eliminating interference between different service providers Download PDFInfo
- Publication number
- CN106571505A CN106571505A CN201610474114.9A CN201610474114A CN106571505A CN 106571505 A CN106571505 A CN 106571505A CN 201610474114 A CN201610474114 A CN 201610474114A CN 106571505 A CN106571505 A CN 106571505A
- Authority
- CN
- China
- Prior art keywords
- band
- metallic cavity
- cover plate
- coaxial
- fixedly connected
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 230000008030 elimination Effects 0.000 claims description 28
- 238000003379 elimination reaction Methods 0.000 claims description 28
- 229950000845 politef Drugs 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
- H01P1/2053—Comb or interdigital filters; Cascaded coaxial cavities the coaxial cavity resonators being disposed parall to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention relates to the technical field of band-stop filters, and more particularly to a band-stop filter capable of eliminating interference between different service providers. The band-stop filter comprises a metal cavity and a cover plate, and symmetrical L-shaped grooves are arranged in the middle of the metal cavity. Metallic band-shaped wires attaching to the inner wall of the L-shaped grooves are supported and fixed in the L-shaped grooves through polytetrafluoroethylene structural members, inner conductors are wrapped in the metallic band-shaped wires, and the metallic band-shaped wires are connected N-type joints through the inner conductors. The N-type joints are fixed with threaded holes in the outer wall of the metal cavity through fasteners, and outer conductors of a coaxial resonating part are fixedly connected to the threaded holes through screws. The coaxial resonating part is fixedly connected with a coupling part through T-shaped fasteners, and the coupling part is positioned in the metal cavity. Threaded holes are arranged in the cover plate and are fixedly connected with the inner conductors of the coaxial resonating part through screws to seal the cover plate and the metal cavity. The structure is simple, the band-stop filter is directly fed by a coaxial line, and design and installation are convenient.
Description
Technical field
The present invention relates to band elimination filter technical field, specially a kind of band suitable for disturbing elimination between different operators
Resistance wave filter.
Background technology
Current mobile communications business development is swift and violent, base station operation enterprise in order to save equipment operation cost, reduce management and
Network operation expense, certainly will will improve the compatibility of base station system, to realize the base station multiplexing function of an operator.It is universal at present
Phenomenon is that, toward mobile resettlement, newly-built 4G machine rooms are essentially in moving machine room superposition UNICOM and telecommunications room.Due to newly-built
Telecommunications 4G system operating frequency is 1755～1775；1850～1870MHz, and the operating frequency of the built 3G systems of movement is 1880
～1920MHz, it is therefore desirable to design band elimination filter and ensure that the normal operation of each communication system is interference-free.Band elimination filter energy
Ensure that useful signal is unaffected while enough filtering interference signals, and the insertion loss opposite band in band elimination filter passband
Bandpass filter is more excellent.
The main way of realization of wave filter has microstrip filter, waveguide filter, dielectric filter, LC wave filter harmony tables
Face wave filter etc..Waveguide filter occur it is earliest, it have low-loss, high q-factor and usage frequency scope it is wide (until
100GHz) the advantages of, but its disadvantage be volume and weight all substantially it is huger than the wave filter of other forms much.It is micro-
Band filter size is little, easy to process, but its pass band insertion loss is larger and untunable.Dielectric resonator and wave filter have low damage
The characteristics of consumption, high-temperature stability and compact conformation, but this kind of wave filter can be limited by cost and technological level.Relatively
Bear that power is relatively low with the excessive problem of waveguiding structure volume in microstrip structure, the wave filter of coaxial cavity structure bears because having
Power is big, production cost is relatively low, conveniently the features such as debugging.The device product for new opplication scene is there is no to go out on the market at present
It is existing, therefore the band elimination filter of mobile base station system altogether is designed to a difficult problem.
The content of the invention
It is an object of the invention to provide a kind of band elimination filter suitable for disturbing elimination between different operators, to solve
The problem proposed in above-mentioned background technology.The band elimination filter suitable for disturbing elimination between different operators has band resistance filter
Ripple device simple structure, by coaxial line direct feed, facilitates design and installation.
For achieving the above object, the present invention provides following technical scheme：
A kind of band elimination filter suitable for disturbing elimination between different operators, including metallic cavity and cover plate, the gold
Category chamber outer wall is provided with screwed hole, and the middle part in the metallic cavity is provided with symmetrical L-type groove, is equipped with poly- in the L-type groove
Tetrafluoroethene supports, are fixed with metal band-shaped with what L-type groove inwall was fitted on the politef supports
Line, is enclosed with inner wire in the metal band-shaped line, the metal band-shaped line is connected with N connector, the N-type by inner wire
Joint is fixed by securing member with the screwed hole of metallic cavity outer wall；
Bottom in the metallic cavity is provided with the screw hole that two row M groups are equidistantly arranged, and M >=3, the screw hole passes through
Screw is fixedly connected with the outer conductor of coaxial resonance portion, and the coaxial resonance portion is fixed with coupling by T font securing members
Part, and coupling unit is in metallic cavity；
It is provided with tapped through hole on the cover plate, the tapped through hole in the screw that runs through and coaxial resonance portion by leading
Body is fixedly connected, and can seal cover plate and metallic cavity.
Preferably, the metal band-shaped line is air dielectric strip line.
Preferably, the quantity of the coaxial resonance portion is three groups, and it is adjacent between to be equally spaced.
Compared with prior art, the invention has the beneficial effects as follows：This between different operators suitable for disturbing the band of elimination to hinder
Wave filter, 1. compact conformation being capable of effectively save installing space；2. the band elimination filter of this structure is coaxial cavity structure, by
In the intrinsic characteristic of the structure, therefore the power capacity of the band elimination filter of the present invention is than larger, and stopband 1872MHz during room temperature
- 25dB, excellent performance are less than with the Insertion Loss of 1875MHz；3. because band stop filter structure is simple, by coaxial line direct feed,
Facilitate design and installation.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is cover plate schematic top plan view of the present invention；
Fig. 3 is metallic cavity schematic top plan view of the present invention；
Fig. 4 is metal band-shaped line schematic diagram of the invention；
Fig. 5 is T fonts securing member schematic diagram of the present invention；
Fig. 6 is first set filters to test result schematic diagram of the present invention；
Fig. 7 is second set of filters to test result schematic diagram of the invention.
In figure：1 metallic cavity, 10 screw holes, 2 cover plates, 20 tapped through holes, 3 coaxial resonance portions, 4 L-type grooves,
40 metal band-shaped lines, 5 N connectors, 6 coupling units, 60 T font securing members.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-7 are referred to, the present invention provides a kind of technical scheme：
A kind of band elimination filter suitable for disturbing elimination between different operators, including metallic cavity 1 and cover plate 2, metal
The outer wall of cavity 1 is provided with screwed hole, and the middle part in metallic cavity 1 is provided with symmetrical L-type groove 4, L-type groove 4 and is equipped with polytetrafluoroethyl-ne
Alkene supports, are fixed with the metal band-shaped line 40 fitted with the inwall of L-type groove 4, metal on politef supports
Inner wire is enclosed with strip line 40, metal band-shaped line 40 is connected with N connector 5 by inner wire, and N connector 5 is by fastening
Part is fixed with the screwed hole of the outer wall of metallic cavity 1.
Bottom in metallic cavity 1 is provided with the screw hole 10 that two row M groups are equidistantly arranged, and M >=3, screw hole 10 passes through spiral shell
Nail is fixedly connected with the outer conductor of coaxial resonance portion 3, and coaxial resonance portion 3 is fixed with coupling part by T fonts securing member 60
Divide 6, and coupling unit 6 is located in metallic cavity 1.
Tapped through hole 20 is provided with cover plate 2, tapped through hole 20 is by the screw for running through and the inner wire of coaxial resonance portion 3
It is fixedly connected, and cover plate 2 can be sealed with metallic cavity 1.
When wave filter works, signal is transmitted by N connector 5 between metal band-shaped line 40.In transmitting procedure, coupling
Part 6 is transmitted energy in coaxial resonance portion 3 by T fonts securing member 60 so that the frequency on metal band-shaped line 40
Signal amplitude reduce.Imitate the stopband to the frequency after six coupling units 6 and six coaxial resonance portions 3, is formed
Really.
This compact conformation, being capable of effectively save installing space；Band elimination filter is coaxial cavity structure, because the structure is consolidated
Some characteristics, therefore the power capacity of the band elimination filter of the present invention is than larger, and stopband 1872MHz and 1875MHz during room temperature
Insertion Loss be less than -25dB, excellent performance；Because band stop filter structure is simple, by coaxial line direct feed, conveniently designs and pacify
Dress.
Using technical scheme as above, the band elimination filter invented can eliminate the interference of 1872-1875MHz, while
Ensure the signal transmission of 1880-1890MHz.2 sets of wave filter are assembled after the completion of design respectively in room temperature (23 DEG C), high temperature (50
DEG C) and low temperature (- 20 DEG C) under tested, test result following (S21, unit：dB)：
First set (Fig. 6)：
Second set (Fig. 7)：
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (3)
1. a kind of band elimination filter suitable for disturbing elimination between different operators, including metallic cavity (1) and cover plate (2), its
It is characterised by：Metallic cavity (1) outer wall is provided with screwed hole, and the middle part in the metallic cavity (1) is provided with symmetrical L-type groove
(4), politef supports are equipped with the L-type groove (4), are fixed with the politef supports
Inner wire, the metal are enclosed with the metal band-shaped line (40) fitted with L-type groove (4) inwall, the metal band-shaped line (40)
Strip line (40) is connected with N connector (5) by inner wire, the N connector (5) by securing member and metallic cavity (1) outward
The screwed hole of wall is fixed；
Bottom in the metallic cavity (1) is provided with the screw hole (10) that two row M groups are equidistantly arranged, M >=3, the screw hole
(10) outer conductor of coaxial resonance portion (3) is fixedly connected with by screw, the coaxial resonance portion (3) is tight by T fonts
Firmware (60) is fixed with coupling unit (6), and coupling unit (6) is in metallic cavity (1)；
It is provided with tapped through hole (20) on the cover plate (2), the tapped through hole (20) is by the screw that runs through and coaxial resonant structure
The inner wire for dividing (3) is fixedly connected, and can seal cover plate (2) and metallic cavity (1).
2. a kind of band elimination filter suitable for disturbing elimination between different operators according to claim 1, its feature exists
In：The metal band-shaped line (40) is air dielectric strip line.
3. a kind of band elimination filter suitable for disturbing elimination between different operators according to claim 1, its feature exists
In：The quantity of the coaxial resonance portion (3) is three groups, and it is adjacent between to be equally spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610474114.9A CN106571505B (en) | 2016-06-26 | 2016-06-26 | Band elimination filter suitable for interference elimination between different operators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610474114.9A CN106571505B (en) | 2016-06-26 | 2016-06-26 | Band elimination filter suitable for interference elimination between different operators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106571505A true CN106571505A (en) | 2017-04-19 |
| CN106571505B CN106571505B (en) | 2020-01-14 |
Family
ID=58532192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610474114.9A Active CN106571505B (en) | 2016-06-26 | 2016-06-26 | Band elimination filter suitable for interference elimination between different operators |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106571505B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114556693A (en) * | 2019-10-24 | 2022-05-27 | 华为技术有限公司 | Band elimination filter and electronic equipment |
| EP4084213A4 (en) * | 2020-07-02 | 2023-12-27 | PROSE Technologies (Suzhou) Co., Ltd. | Band-stop filter and radio frequency device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201134487Y (en) * | 2007-12-27 | 2008-10-15 | 奥雷通光通讯设备（上海）有限公司 | Band-elimination filter for WIMAX communication system |
| US20100188174A1 (en) * | 2009-01-29 | 2010-07-29 | Radio Frequency Systems, Inc. | Compact tunable dual band stop filter |
| KR20120061345A (en) * | 2010-12-03 | 2012-06-13 | 주식회사 이너트론 | Band sstop filter comprising coupling tuning plates |
| CN102623776A (en) * | 2012-03-20 | 2012-08-01 | 中国计量学院 | Coaxial cavity-based rejection filter |
| CN103107392A (en) * | 2013-02-07 | 2013-05-15 | 江苏贝孚德通讯科技股份有限公司 | Mixed-mode radio frequency/microwave band elimination filter |
| CN205752466U (en) * | 2016-06-26 | 2016-11-30 | 南京濠暻通讯科技有限公司 | A kind of band elimination filter being applicable between different operators disturb elimination |
-
2016
- 2016-06-26 CN CN201610474114.9A patent/CN106571505B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201134487Y (en) * | 2007-12-27 | 2008-10-15 | 奥雷通光通讯设备（上海）有限公司 | Band-elimination filter for WIMAX communication system |
| US20100188174A1 (en) * | 2009-01-29 | 2010-07-29 | Radio Frequency Systems, Inc. | Compact tunable dual band stop filter |
| KR20120061345A (en) * | 2010-12-03 | 2012-06-13 | 주식회사 이너트론 | Band sstop filter comprising coupling tuning plates |
| CN102623776A (en) * | 2012-03-20 | 2012-08-01 | 中国计量学院 | Coaxial cavity-based rejection filter |
| CN103107392A (en) * | 2013-02-07 | 2013-05-15 | 江苏贝孚德通讯科技股份有限公司 | Mixed-mode radio frequency/microwave band elimination filter |
| CN205752466U (en) * | 2016-06-26 | 2016-11-30 | 南京濠暻通讯科技有限公司 | A kind of band elimination filter being applicable between different operators disturb elimination |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114556693A (en) * | 2019-10-24 | 2022-05-27 | 华为技术有限公司 | Band elimination filter and electronic equipment |
| US12034195B2 (en) | 2019-10-24 | 2024-07-09 | Huawei Technologies Co., Ltd. | Band-stop filter and electronic device |
| EP4084213A4 (en) * | 2020-07-02 | 2023-12-27 | PROSE Technologies (Suzhou) Co., Ltd. | Band-stop filter and radio frequency device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106571505B (en) | 2020-01-14 |
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