CN109546274A - A kind of reduction coaxial filter passive intermodulation device and method - Google Patents
A kind of reduction coaxial filter passive intermodulation device and method Download PDFInfo
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- CN109546274A CN109546274A CN201811368226.1A CN201811368226A CN109546274A CN 109546274 A CN109546274 A CN 109546274A CN 201811368226 A CN201811368226 A CN 201811368226A CN 109546274 A CN109546274 A CN 109546274A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000009467 reduction Effects 0.000 title description 9
- 239000002184 metal Substances 0.000 claims abstract description 133
- 229910052751 metal Inorganic materials 0.000 claims abstract description 133
- 230000008878 coupling Effects 0.000 claims abstract description 19
- 238000010168 coupling process Methods 0.000 claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 230000001629 suppression Effects 0.000 claims 2
- 230000000452 restraining effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 7
- 238000004891 communication Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/007—Manufacturing frequency-selective devices
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
本发明公开一种降低同轴滤波器无源互调装置及方法，涉及微波无线通信领域。包括调频率、调耦合螺钉、金属盖板、金属腔体、谐振杆。所述产生无源互调位置包括调频率、调耦合螺钉处、同轴谐振杆的结构与金属腔体连接处、金属腔体连接处、金属盖板与金属腔体连接处。通过非导电介质实现金属‑非导电介质‑金属的接触，通过增压圈实现金属盖板和金属腔体的高压接触，实现抑制同轴滤波器带来的无源互调。本发明具有结构简单、重量轻、设计周期短、设计成本低的优点。本发明能够广泛应用于航空航天领域及地面通信领域。
The invention discloses a device and method for reducing passive intermodulation of a coaxial filter, and relates to the field of microwave wireless communication. Including frequency adjustment, coupling adjustment screw, metal cover, metal cavity, resonance rod. The positions for generating passive intermodulation include frequency modulation, coupling screws, the connection between the structure of the coaxial resonant rod and the metal cavity, the connection between the metal cavity, and the connection between the metal cover and the metal cavity. The contact between metal-non-conductive medium-metal is realized through a non-conductive medium, and the high-voltage contact between the metal cover plate and the metal cavity is realized through a pressurizing ring, so as to suppress the passive intermodulation caused by the coaxial filter. The invention has the advantages of simple structure, light weight, short design period and low design cost. The invention can be widely used in the fields of aerospace and ground communication.
Description
Technical field
The present invention relates to microwave radio commu fields, and in particular to a kind of reduction coaxial filter passive intermodulation device and side
Method.
Background technique
Passive intermodulation (PIM) is generated when two or more signals pass through passive device.In satellite communication system, one
Pay antenna may carry simultaneously transmitting and receive task, operating power range may up to several watts, tens of watts it is even higher.In nothing
Contact in the microwave component of source, the presence of node, interface or the device with non-linear voltage current conductive characteristic can cause system
The decline of performance, because the electric current of multiple carrier channels can flow through these binding sites or device simultaneously, due to these carrier waves
Mixer action, generates new undesirable intermodulation frequency composition, these signals may reach receiving channel and form interference.Communication system
In PIM (Passive Intermodulation) interference in the antenna passive device it is non-linear.A new generation, China is more
Carrier communication satellite development mostly uses duplexer, high-power (tens of or even upper hectowatt) work, and PIM problem will become
It is very serious.It is obtained currently, mainly passing through technique about the inhibition of microwave component passive intermodulation both at home and abroad and testing repeatedly, experiment week
Phase is long, design cost is high, and inhibits the structure improvement project of passive intermodulation single for Space Microwave component, and effect is bad.
Summary of the invention
The present invention discloses a kind of reduction coaxial filter passive intermodulation device and method technical problems to be solved: passing through
Non-conductive medium realizes metal-non-conductive medium-metal contact, and the height of metal cover board and metal cavity is realized by pressurizing ring
Press contacts are realized and inhibit coaxial filter bring passive intermodulation.The generation passive intermodulation main positions include coaxial resonance
The structure of bar, the connection of coaxial resonant rod and cavity, cover board and cavity junction.The present invention have structure it is simple, it is light-weight,
Design cycle short advantage.
The present invention is achieved through the following technical solutions.
The present invention discloses a kind of reduction coaxial filter passive intermodulation device, including frequency modulation rate, tune coupling screws, metal cover
Plate, metal cavity, resonant rod.The passive intermodulation position that generates includes frequency modulation rate, adjusts at coupling screws, the knot of coaxial resonant rod
Structure and metal cavity junction, metal cavity junction, metal cover board and metal cavity junction, inhibit above-mentioned position
Passive intermodulation processing, realizes and inhibits coaxial filter bring passive intermodulation.
It in frequency modulation rate, adjusts at coupling and screw, using non-conductive medium screw, does metal spiral shell in non-conductive medium screw front end
Mother, and it is silver-plated to metal nuts, it is fixed on non-conductive medium front end, metal cavity is protruded into and carries out electrically being adjustable realization metal-
Non-conductive medium-metal connection type.
Pressurized ring is added in structure and metal cavity junction in coaxial resonant rod, coaxial resonant rod bottom end, increases metal
Pressure between cavity and metal cover board makes the pressure between metal cavity and metal cover board reach pressure every square centimeter and reaches
To requirement, metallic screw is taken down, and then inhibits poor contact bring passive intermodulation.
In metal cavity junction, pressurized ring is added on top, reaches the pressure between metal cavity and metal cover board
Pressure requirements every square centimeter, and then inhibit cover board and cavity bring passive intermodulation.
It in metal cover board and metal cavity junction, is handled using high pressure connection structure and coating, realizing reduces coaxial filter
The passive intermodulation of wave device improves yield rate.
Preferably, the preferred polyimide media of the non-conductive medium.
The present invention discloses a kind of working method for reducing coaxial filter passive intermodulation device, includes the following steps: adjusting
Frequency is adjusted at coupling screws using non-conductive medium screw, does metal nuts in non-conductive medium screw front end, and to metal spiral shell
It is female silver-plated, it is fixed on non-conductive medium front end, metal cavity is protruded into and carries out electrically being adjustable realization metal-non-conductive medium-gold
The connection type of category.
Pressurized ring is added in structure and metal cavity junction in coaxial resonant rod, coaxial resonant rod bottom end, increases metal
Pressure between cavity and metal cover board makes the pressure between metal cavity and metal cover board reach pressure every square centimeter and reaches
To requirement, metallic screw is taken down, and then inhibits poor contact bring passive intermodulation.
In metal cavity junction, pressurized ring is added on top, reaches the pressure between metal cavity and metal cover board
Pressure requirements every square centimeter, and then inhibit cover board and cavity bring passive intermodulation.
It in metal cover board and metal cavity junction, is handled using high pressure connection structure and coating, realizing reduces coaxial filter
The passive intermodulation of wave device improves yield rate.
Preferably, the preferred polyimide media of the non-conductive medium.
The utility model has the advantages that
1, the present invention discloses a kind of reduction coaxial filter passive intermodulation device and method, in frequency modulation rate, adjusts coupling and screw
Place, using non-conductive medium screw, does metal nuts in non-conductive medium screw front end, and silver-plated to metal nuts, is fixed on
Non-conductive medium front end protrudes into metal cavity and carries out electrically being adjustable realization metal-non-conductive medium-metal connection type,
The processing is simple that processing cost is low for non-conductive medium, and then the structure of coaxial filter is simple.
2, the present invention discloses a kind of reduction coaxial filter passive intermodulation device and method, is filled using resonant rod high pressure loop
It sets, realizes the close contact of metal cavity wall and resonant rod, the processing is simple, and can be effectively reduced the cost of coaxial filter.
3, the existing method for reducing coaxial filter is a large amount of coaxial filters of processing, is then selected by many experiments low
Passive intermodulation coaxial filter device, design cycle are long, at high cost.The present invention discloses a kind of reduction coaxial filter passive intermodulation dress
It sets and method, coaxial filter passive intermodulation is reduced by addition pressurized ring, low passive intermodulation coaxial filter can be shortened
Design cycle, and reduce the design cost of coaxial filter.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is coaxial filter overall schematic and its scheme of installation；
Fig. 2 is resonant rod schematic diagram；
Fig. 3 is resonant rod parabolic surface chart；
Fig. 4 is frequency modulation rate, adjusts coupling and screw schematic diagram and assembling figure；
Fig. 5 is metal cavity structural schematic diagram.
1- frequency modulation rate, tune coupling screws, 2- metal cover board, 3- metal cavity, 4- resonant rod in figure.
Specific embodiment
Objects and advantages in order to better illustrate the present invention with reference to the accompanying drawing do further summary of the invention with example
Explanation.
Embodiment 1:
The present embodiment discloses a kind of reduction coaxial filter passive intermodulation device, including frequency modulation rate, tune coupling screws 1, gold
Belong to cover board 2, metal cavity 3, resonant rod 4.The generation passive intermodulation position includes frequency modulation rate, adjusts at coupling screws 1, is coaxial humorous
The structure of vibration bar 4 and 3 junction of metal cavity, 3 junction of metal cavity, metal cover board 2 and 3 junction of metal cavity.
1 uses non-conductive medium screw at frequency modulation rate, tune coupling and screw, does metal nuts in screw front end, and to gold
It is silver-plated to belong to nut, is fixed on polyimide media front end, protrudes into metal cavity 3 and carries out electrically that be adjustable realization metal-non-conductive
The connection type of dielectric-metal, and then inhibit tuning, adjust coupling bring passive intermodulation.
Belonging at resonant rod 4,0.1mm wide is added in resonant rod bottom end, and the pressurized ring of 0.2mm depth makes between cavity and cover board
Pressure reach pressure every square centimeter and reach 220N-240N, and then inhibit poor contact bring passive intermodulation.
In 3 junction of metal cavity, 0.1mm wide is added on 3 top of metal cavity, and the pressurized ring of 0.3mm depth makes metal cavity
Pressure between 3 and metal cover board 2 reaches pressure every square centimeter and reaches 280N-300N, and then inhibits cover board and cavity band
The passive intermodulation come.
It at metal cover board 2 and metal cavity 3, is handled using high pressure connection structure and coating, realizing reduces coaxial filtering
The passive intermodulation of device improves yield rate.
Using non-conductive medium screw, metal nuts is done in screw front end, and silver-plated to metal nuts, be fixed on non-conductive
Medium front end protrudes into metal cavity 3 and carries out electrically being adjustable the connection type for realizing metal-dielectric-metal.Resonant rod and cavity
0.1mm wide is added in junction, 4 bottom end of resonant rod, and the pressurized ring of 0.2mm depth makes the pressure between metal cavity 3 and metal cover board 2
The pressure that power reaches every square centimeter reaches 220N.Metal cavity 3 and 2 junction of metal cover board, cavity top end add 0.1mm
Width, the pressurized ring of 0.3mm depth make the pressure between metal cavity 3 and metal cover board 2 reach pressure every square centimeter and reach
280N。
The present embodiment disclose it is a kind of reduce coaxial filter passive intermodulation device working method, frequency modulation rate, adjust coupling and
1 uses non-conductive medium screw at screw, does metal nuts in screw front end, and silver-plated to metal nuts, is fixed on polyamides Asia
Amine medium front end protrudes into metal cavity 3 and carries out electrically being adjustable realization metal-non-conductive medium-metal connection type, in turn
Inhibit tuning, adjust coupling bring passive intermodulation.
Belonging at resonant rod 4,0.1mm wide is added in resonant rod bottom end, and the pressurized ring of 0.2mm depth makes between cavity and cover board
Pressure reach pressure every square centimeter and reach 220N-240N, and then inhibit poor contact bring passive intermodulation.
In 3 junction of metal cavity, 0.1mm wide is added on 3 top of metal cavity, and the pressurized ring of 0.3mm depth makes metal cavity
Pressure between 3 and metal cover board 2 reaches pressure every square centimeter and reaches 280N-300N, and then inhibits cover board and cavity band
The passive intermodulation come.
It at metal cover board 2 and metal cavity 3, is handled using high pressure connection structure and coating, realizing reduces coaxial filtering
The passive intermodulation of device improves yield rate.
Using non-conductive medium screw, metal nuts is done in screw front end, and silver-plated to metal nuts, be fixed on non-conductive
Medium front end protrudes into metal cavity 3 and carries out electrically being adjustable the connection type for realizing metal-dielectric-metal.Resonant rod and cavity
0.1mm wide is added in junction, 4 bottom end of resonant rod, and the pressurized ring of 0.2mm depth makes the pressure between metal cavity 3 and metal cover board 2
The pressure that power reaches every square centimeter reaches 220N.Metal cavity 3 and 2 junction of metal cover board, cavity top end add 0.1mm
Width, the pressurized ring of 0.3mm depth make the pressure between metal cavity 3 and metal cover board 2 reach pressure every square centimeter and reach
280N。
Above-described specific descriptions have carried out further specifically the purpose of invention, technical scheme and beneficial effects
It is bright, it should be understood that the above is only a specific embodiment of the present invention, the protection model being not intended to limit the present invention
It encloses, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368226.1A CN109546274A (en) | 2018-11-16 | 2018-11-16 | A kind of reduction coaxial filter passive intermodulation device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368226.1A CN109546274A (en) | 2018-11-16 | 2018-11-16 | A kind of reduction coaxial filter passive intermodulation device and method |
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| Publication Number | Publication Date |
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| CN109546274A true CN109546274A (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811368226.1A Pending CN109546274A (en) | 2018-11-16 | 2018-11-16 | A kind of reduction coaxial filter passive intermodulation device and method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995001658A1 (en) * | 1993-07-02 | 1995-01-12 | Siemens Telecomunicazioni S.P.A. | Tunable resonator for microwave oscillators and filters |
| CN1469665A (en) * | 2002-06-12 | 2004-01-21 | ���µ�����ҵ��ʽ���� | Dielectric filter, communication device and method for controlling resonance frequency |
| CN102569978A (en) * | 2011-12-20 | 2012-07-11 | 摩比天线技术（深圳）有限公司 | Dielectric resonator tuning structure and tuning method |
| CN205069822U (en) * | 2015-09-30 | 2016-03-02 | 李登峰 | Novel dielectric filter |
| US9490512B2 (en) * | 2012-03-05 | 2016-11-08 | Filtronic Wireless Limited | Tuneable filter |
| CN107146933A (en) * | 2017-04-17 | 2017-09-08 | 深圳三星通信技术研究有限公司 | A kind of new TM moulds both-end meson filter construction |
| CN208028200U (en) * | 2018-04-04 | 2018-10-30 | 深圳市迈特通信设备有限公司 | A kind of resonant rod of bottom crimping structure |
-
2018
- 2018-11-16 CN CN201811368226.1A patent/CN109546274A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995001658A1 (en) * | 1993-07-02 | 1995-01-12 | Siemens Telecomunicazioni S.P.A. | Tunable resonator for microwave oscillators and filters |
| CN1469665A (en) * | 2002-06-12 | 2004-01-21 | ���µ�����ҵ��ʽ���� | Dielectric filter, communication device and method for controlling resonance frequency |
| CN102569978A (en) * | 2011-12-20 | 2012-07-11 | 摩比天线技术（深圳）有限公司 | Dielectric resonator tuning structure and tuning method |
| US9490512B2 (en) * | 2012-03-05 | 2016-11-08 | Filtronic Wireless Limited | Tuneable filter |
| CN205069822U (en) * | 2015-09-30 | 2016-03-02 | 李登峰 | Novel dielectric filter |
| CN107146933A (en) * | 2017-04-17 | 2017-09-08 | 深圳三星通信技术研究有限公司 | A kind of new TM moulds both-end meson filter construction |
| CN208028200U (en) * | 2018-04-04 | 2018-10-30 | 深圳市迈特通信设备有限公司 | A kind of resonant rod of bottom crimping structure |
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Application publication date: 20190329 |