CN109524750B - A kind of reduction circular waveguide duplexer passive intermodulation device and method - Google Patents
A kind of reduction circular waveguide duplexer passive intermodulation device and method Download PDFInfo
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- CN109524750B CN109524750B CN201811369293.5A CN201811369293A CN109524750B CN 109524750 B CN109524750 B CN 109524750B CN 201811369293 A CN201811369293 A CN 201811369293A CN 109524750 B CN109524750 B CN 109524750B
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- 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
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
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Abstract
A kind of reduction circular waveguide duplexer passive intermodulation device and method disclosed by the invention, is related to microwave radio commu field.A kind of reduction circular waveguide duplexer passive intermodulation device and method disclosed by the invention, realizes the contact of metal-air-metal using medium flange, realizes metal-non-conductive medium-metal contact using dieelctric sheet, realizes and inhibit microwave component passive intermodulation.Apparatus of the present invention include metallic screw, non-conductive medium piece, non-conductive medium set, non-conductive medium screw needed for non-conductive medium flange, fixed non-conductive medium flange.The present invention has the advantages that structure is simple, light-weight, design cost rate is high, the design cycle is short.The present invention can be widely applied for aerospace field and ground communication field.
Description
Technical field
The present invention relates to microwave radio commu fields, and in particular to a kind of reduction circular waveguide duplexer passive intermodulation device and
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
A kind of reduction circular waveguide duplexer passive intermodulation device and method technical problems to be solved disclosed by the invention are:
The contact of metal-air-metal is realized using medium flange, realizes that metal-non-conductive medium-metal connects using dieelctric sheet
Touching is realized and inhibits microwave component passive intermodulation.The present invention has simple structure, light-weight, design cost rate height, design cycle short
The advantages of.
A kind of reduction circular waveguide duplexer passive intermodulation device disclosed by the invention, including non-conductive medium flange, fixation
Metallic screw needed for non-conductive medium flange, non-conductive medium piece, non-conductive medium set, non-conductive medium screw.The circle
Waveguide duplexer includes frequency modulation rate, adjusts coupling screws, metal cavity wall, input and output feeder pillar, coaxial connector inner core, coaxially connects
Connect device, the second section cavity, first segment cavity, main waveguide, duplexer common end waveguide mouth.Gold is realized using non-conductive medium flange
The contact of category-air-metal realizes metal-non-conductive medium-metal contact using non-conductive medium piece, realizes and inhibits micro-
Parts for wave passive intermodulation.Cavity includes the second section cavity, first segment cavity.
It in frequency modulation rate, adjusts at coupling screws and cavity, is contacted using non-conductive medium flange isolating metal with metal, realized
Metal-non-conductive medium-metal connection type；
In frequency modulation rate, coupling screws and cavity junction are adjusted, frequency modulation adjusts the diameter d2 of coupling screws to be less than in metal cavity wall
The unthreaded hole diameter d1 that face is opened, so that frequency modulation tune coupling screws and metal cavity wall (3) do not contact.Non-conductive medium flange passes through metal
Screw is fixed on above metal cavity wall, realizes metal-air-metal connection type.
Input and output feeder pillar and cavity junction, are contacted using non-conductive medium thin slice isolating metal with metal, are realized
The connection type of metal-dielectric-metal.
Improve input and output couple feed rod structure as follows: the inner core of coaxial connector is covered by non-conductive medium to be fixed
Contactless coupling is realized in input and output feeder pillar.It is separated, is led to dieelctric sheet between input and output feeder pillar and metal cavity wall
It crosses non-conductive medium screw to fix, realizes the nonmetallic contact of input and output feeder pillar and metal cavity wall.
First segment cavity and main waveguide cavity are integrally machined, and main waveguide cavity is cut from main waveguide and duplexer public port divides
It does not process.Coupling iris and the second section cavity are individually processed, and coaxial connector is fixed on the second section cavity.
Preferably, the preferred polyimide media of the non-conductive medium.
A kind of working method reducing circular waveguide duplexer passive intermodulation device disclosed by the invention, includes the following steps:
It in frequency modulation rate, adjusts at coupling screws and cavity, is contacted using non-conductive medium flange isolating metal with metal, realized
Metal-non-conductive medium-metal connection type；
In frequency modulation rate, coupling screws and cavity junction are adjusted, frequency modulation adjusts the diameter d2 of coupling screws to be less than in metal cavity wall
The unthreaded hole diameter d1 that face is opened, so that frequency modulation tune coupling screws and metal cavity wall (3) do not contact.Non-conductive medium flange passes through metal
Screw is fixed on above metal cavity wall, realizes metal-air-metal connection type.
Input and output feeder pillar and cavity junction, are contacted using non-conductive medium thin slice isolating metal with metal, are realized
The connection type of metal-dielectric-metal.
The inner core of coaxial connector, which is fixed on input and output feeder pillar by non-conductive medium set, realizes contactless coupling.
It is separated between input and output feeder pillar and metal cavity wall with dieelctric sheet, is fixed by non-conductive medium screw, realize input and output
The nonmetallic contact of feeder pillar and metal cavity wall.
First segment cavity and main waveguide cavity are integrally machined, and main waveguide cavity is cut from main waveguide and duplexer public port divides
It does not process.Coupling iris and the second section cavity are individually processed, and coaxial connector is fixed on the second section cavity.
Preferably, the preferred polyimide media of the non-conductive medium.
The utility model has the advantages that
1, a kind of reduction circular waveguide duplexer passive intermodulation device and method disclosed by the invention, using non-conductive medium method
Blue and non-conductive medium sheet devices, realize the contact of metal-air-metal using medium flange, realize metal-using dieelctric sheet
The contact of non-conductive medium-metal, the processing is simple for non-conductive medium, processing cost is low, and then the structure letter of circular waveguide duplexer
It is single and at low cost.
2, the existing method for reducing circular waveguide duplexer passive intermodulation is a large amount of circular waveguide duplexers of processing, then by big
Low passive intermodulation circular waveguide duplexer is selected in amount experiment, and the design cycle is long, at high cost.A kind of reduction circular waveguide disclosed by the invention
It is double to can reduce circular waveguide for duplexer passive intermodulation device and method, the contact using non-conductive medium isolating metal with metal
The passive intermodulation of work device, shortens the design cycle of low passive intermodulation circular waveguide duplexer, and reduces low passive intermodulation duplexer
Design cost.
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 that tuning screw and coupling screws control the required small flange of polyimide media and its scheme of installation；
Fig. 2 is feeder pillar and cavity the junction medium socket and its peace with coaxial connector heart and feeder pillar junction out
Fill schematic diagram；
Fig. 3 is low passive intermodulation circular waveguide duplexer totality assembling sequence and process flow diagram；
Fig. 4 is the overall structure diagram of low passive intermodulation circular waveguide duplexer；
Wherein 1- frequency modulation rate, tune coupling screws, 2- non-conductive medium flange, 3- metal cavity wall, the fixed non-conductive medium of 4-
Metallic screw needed for block, 5- non-conductive medium piece, 6- input and output feeder pillar, 7.- non-conductive medium set, 8- are coaxially connected
Device inner core, 9- non-conductive medium screw, 10- coaxial connector, 11- the second section cavity, 12- first segment cavity, the main waveguide of 13-,
14- duplexer common end waveguide mouth.
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:
A kind of reduction circular waveguide duplexer passive intermodulation device disclosed in the present embodiment, including it is non-conductive medium flange 1, solid
Metallic screw 4, non-conductive medium piece 5 needed for determining non-conductive medium flange, non-conductive medium cover 7, non-conductive medium screw 9.
The circular waveguide duplexer include frequency modulation rate, adjust coupling screws 2, metal cavity wall 3, input and output feeder pillar 6, in coaxial connector
Core 8, coaxial connector 10, the second section cavity 11, first segment cavity 12, main waveguide 13, duplexer common end waveguide mouth 14.
Cavity includes the second section cavity 11, first segment cavity 12.It in frequency modulation rate, adjusts at coupling screws 2 and cavity, use is non-
Conducting medium flange isolating metal is contacted with metal, realizes metal-non-conductive medium-metal connection type.
In frequency modulation rate, coupling screws 1 and cavity junction are adjusted, frequency modulation, the diameter d2 for adjusting coupling screws 1 are that 6mm is less than gold
The 6.2mm for belonging to the unthreaded hole diameter d1 that cavity wall 3 is opened above, so that frequency modulation tune coupling screws and metal cavity wall (3) do not contact.Polyamides is sub-
Amine medium flange 2 is fixed on above metal cavity wall 3 by metallic screw 4, realizes metal-air-metal connection type.It is described
Non-conductive medium be selected as polyimide media.
Input and output feeder pillar 6 and cavity junction, are contacted using non-conductive medium thin slice isolating metal with metal, are realized
The connection type of metal-dielectric-metal.
Improve input and output couple feed rod structure as follows: the inner core 8 of coaxial connector is solid by non-conductive medium set 7
Contactless coupling is realized due to input and output feeder pillar 6.With with a thickness of 1mm between input and output feeder pillar 6 and metal cavity wall 3
Non-conductive medium piece 5 separates, fixed by non-conductive medium screw 9, realizes the non-of input and output feeder pillar 6 and metal cavity wall 3
Metal contact.It is polyimide media that the non-conductive medium, which covers 7 materials,.
First segment cavity 12 and main waveguide cavity 13 are integrally machined, and main waveguide cavity is from main waveguide 13 and duplexer public port 14
It cuts and processes respectively in place.Coupling iris and the second section cavity are individually processed, and coaxial connector 10 is fixed on 11 on the second section cavity.
A kind of working method reducing circular waveguide duplexer passive intermodulation device disclosed in the present embodiment, including walk as follows
It is rapid:
It in frequency modulation rate, adjusts at coupling screws 2 and cavity, is contacted using non-conductive medium flange isolating metal with metal, it is real
Cash category-non-conductive medium-metal connection type；
In frequency modulation rate, coupling screws 1 and cavity junction are adjusted, frequency modulation adjusts the diameter d2 of coupling screws 1 to be less than metal cavity wall
The 3 unthreaded hole diameter d1 opened above, so that frequency modulation tune coupling screws and metal cavity wall (3) do not contact.Non-conductive medium flange 2 passes through
Metallic screw 4 is fixed on above metal cavity wall 3, realizes metal-air-metal connection type.
Input and output feeder pillar 6 and cavity junction, are contacted using non-conductive medium thin slice isolating metal with metal, are realized
The connection type of metal-dielectric-metal.
The inner core 8 of coaxial connector, which is fixed on input and output feeder pillar 6 by non-conductive medium set 7, realizes contactless coupling
It closes.It is separated between input and output feeder pillar 6 and metal cavity wall 3 with dieelctric sheet 5, it is fixed by non-conductive medium screw 9, it realizes defeated
Enter to export the nonmetallic contact of feeder pillar 6 and metal cavity wall 3.
First segment cavity 12 and main waveguide cavity 13 are integrally machined, and main waveguide cavity is from main waveguide 13 and duplexer public port 14
It cuts and processes respectively in place.Coupling iris and 11 body of the second section chamber are individually processed, and coaxial connector 10 is fixed on the second section cavity 11
On.
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 (5)
1. a kind of reduction circular waveguide duplexer passive intermodulation device, the circular waveguide duplexer includes frequency modulation rate, adjusts coupling screws
(2), metal cavity wall (3), input and output feeder pillar (6), coaxial connector inner core (8), coaxial connector (10), the second section cavity
(11), first segment cavity (12), main waveguide (13), duplexer common end waveguide mouth (14)；Cavity include the second section cavity (11),
First segment cavity (12)；It is characterized by comprising metals needed for non-conductive medium flange (1), fixed non-conductive medium flange
Screw (4), non-conductive medium piece (5), non-conductive medium set (7), non-conductive medium screw (9)；Utilize non-conductive medium flange
It realizes the contact of metal-air-metal, realizes metal-non-conductive medium-metal contact using non-conductive medium piece, realize
Inhibit microwave component passive intermodulation；
It in frequency modulation rate, adjusts at coupling screws (2) and cavity, is contacted using non-conductive medium flange isolating metal with metal, realized
Metal-non-conductive medium-metal connection type；
In frequency modulation rate, coupling screws (1) and cavity junction are adjusted, frequency modulation adjusts the diameter d2 of coupling screws (1) to be less than metal cavity wall
(3) the unthreaded hole diameter d1 opened above, so that frequency modulation tune coupling screws and metal cavity wall (3) do not contact；Non-conductive medium flange (2)
Metal cavity wall (3) is fixed on above by metallic screw (4), realizes metal-air-metal connection type；
Input and output feeder pillar (6) and cavity junction, are contacted using non-conductive medium thin slice isolating metal with metal, realize gold
Category-dielectric-metal connection type；
Improve input and output couple feed rod structure as follows: the inner core (8) of coaxial connector is solid by non-conductive medium set (7)
Contactless coupling is realized due to input and output feeder pillar (6)；With Jie between input and output feeder pillar (6) and metal cavity wall (3)
Matter piece (5) separates, fixed by non-conductive medium screw (9), realizes the non-of input and output feeder pillar (6) and metal cavity wall (3)
Metal contact.
2. a kind of reduction circular waveguide duplexer passive intermodulation device as described in claim 1, it is characterised in that: first segment cavity
(12) it is integrally machined with main waveguide cavity (13), main waveguide cavity cuts difference at main waveguide (13) and duplexer public port (14)
Processing；Coupling iris and second section chamber (11) body are individually processed, and coaxial connector (10) is fixed on the second section cavity (11).
3. a kind of reduction circular waveguide duplexer passive intermodulation device as claimed in claim 1 or 2, it is characterised in that: described
Non-conductive medium selects polyimide media.
4. a kind of working method for reducing circular waveguide duplexer passive intermodulation device, it is characterised in that: include the following steps,
It in frequency modulation rate, adjusts at coupling screws (2) and cavity, is contacted using non-conductive medium flange isolating metal with metal, realized
Metal-non-conductive medium-metal connection type；
In frequency modulation rate, coupling screws (1) and cavity junction are adjusted, frequency modulation adjusts the diameter d2 of coupling screws (1) to be less than metal cavity wall
(3) the unthreaded hole diameter d1 opened above, so that frequency modulation tune coupling screws and metal cavity wall (3) do not contact；Non-conductive medium flange (2)
Metal cavity wall (3) is fixed on above by metallic screw (4), realizes metal-air-metal connection type；
Input and output feeder pillar (6) and cavity junction, are contacted using non-conductive medium thin slice isolating metal with metal, realize gold
Category-dielectric-metal connection type；
The inner core (8) of coaxial connector by non-conductive medium set (7) be fixed on input and output feeder pillar (6) realize it is contactless
Coupling；It is separated, is passed through non-conductive medium screw (9) with dieelctric sheet (5) between input and output feeder pillar (6) and metal cavity wall (3)
It is fixed, realize the nonmetallic contact of input and output feeder pillar (6) and metal cavity wall (3)；
First segment cavity (12) and main waveguide cavity (13) are integrally machined, and main waveguide cavity is from main waveguide (13) and duplexer public port
(14) it cuts at and processes respectively；Coupling iris and second section chamber (11) body are individually processed, and coaxial connector (10) is fixed on second
It saves on cavity (11).
5. a kind of working method for reducing circular waveguide duplexer passive intermodulation device as claimed in claim 4, it is characterised in that:
The non-conductive medium selects polyimide media.
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| CN201811369293.5A CN109524750B (en) | 2018-11-16 | 2018-11-16 | A kind of reduction circular waveguide duplexer passive intermodulation device and method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069206A (en) * | 2015-07-24 | 2015-11-18 | 西安空间无线电技术研究所 | Method for determining passive inter-modulation product of microwave part |
| CN207368191U (en) * | 2017-08-21 | 2018-05-15 | 南京汉瑞微波通信有限公司 | A kind of waveguide coaxial converter based on discontinuous impedance variation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5434548A (en) * | 1994-03-28 | 1995-07-18 | Qualcomm Incorporated | Coaxial-waveguide rotary coupling assemblage |
| CN2305762Y (en) * | 1997-07-02 | 1999-01-27 | 中国航天工业总公司第五研究院第五○四研究所 | One cavity three mode double operation device having one or two feedback |
| CN201466184U (en) * | 2009-08-06 | 2010-05-12 | 中国电子科技集团公司第五十四研究所 | Ku band electric adjustable filter |
| CN105811051B (en) * | 2016-05-25 | 2019-04-05 | 西南交通大学 | A kind of microminiature choke for transmission shaft in waveguide |
| CN206116580U (en) * | 2016-08-30 | 2017-04-19 | 北京星英联微波科技有限责任公司 | Standing wave termination waveguide coaxial convertion ware is hanged down to broadband |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069206A (en) * | 2015-07-24 | 2015-11-18 | 西安空间无线电技术研究所 | Method for determining passive inter-modulation product of microwave part |
| CN207368191U (en) * | 2017-08-21 | 2018-05-15 | 南京汉瑞微波通信有限公司 | A kind of waveguide coaxial converter based on discontinuous impedance variation |
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