CN106532218B - A kind of high-power rectangular waveguide dual directional coupler - Google Patents
A kind of high-power rectangular waveguide dual directional coupler Download PDFInfo
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- CN106532218B CN106532218B CN201611030048.2A CN201611030048A CN106532218B CN 106532218 B CN106532218 B CN 106532218B CN 201611030048 A CN201611030048 A CN 201611030048A CN 106532218 B CN106532218 B CN 106532218B
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- coaxial
- cover board
- coupler
- cavity
- inner wire
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
- H01P5/181—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being hollow waveguides
Abstract
The invention discloses a kind of high-power rectangular waveguide dual directional couplers, including cavity, RF coaxial adapters, coaxial load and cover board, and overall structure is about substantially symmetrical about its central axis；The outside that the cover board is symmetrically fixed on the cavity by several screws forms closed cavity；Multiple through-holes are provided on the cover board；The RF coaxial adapters are fixed on outside the cover board；The coaxial load is fixed on outside the cover board, and the coaxial load is for absorbing microwave signal；The RF coaxial adapters are separately connected a probe inner wire with the coaxial load, and the probe inner wire is each passed through the through-hole and is connect with the cavity；The probe inner wire is with the transformation step in cavity for Distribution of Magnetic Field in adjusting cavity body；The cavity includes straight-through transmission cavity, coupler and coupling aperture, is symmetrical integral structure.Structure of the invention is compact, and processing is simple, can bear 300W power, and airtight performance is strong, and coupling, Insertion Loss, directionality index are excellent.
Description
Technical field
The invention belongs to the technical fields of directional coupler more particularly to a kind of high-power rectangular waveguide amphiorentation to couple
Device.
Background technology
Directional coupler is that a kind of widely used microwave device, its essence are by microwave signal by one in microwave system
Fixed ratio carries out power distribution.Directional coupler generally leads directly to transmission line, secondary road coupling line and coupled structure three by main road
Part forms, and the operation principle of directional coupler is that microwave signal leads directly to transmission line input and output by main road, during which fraction work(
Output is to other structures after the coupled structure of rate enters secondary road coupling line, to realize the separation of signal.Directional coupler is micro-
It is widely used in wave radio frequency system, commonly used in the functions such as sampling, isolation, mixing and the power monitoring of power, major technique
Index is directional, standing-wave ratio, the degree of coupling and insertion loss.
Directional coupler can be there are many kinds of realization method, and microstrip line, coaxial line, rectangular waveguide, circular waveguide, strip line are all
Directional coupler is may make up, common directional coupler is mainly based on microstrip coupler, coaxial coupler and waveguide coupler.
Wherein, microstrip coupler working band is narrow, and it is small to bear power；Coaxial coupler part is processed and assembles difficulty, and debugging is complicated；Wave
It is different according to the shape of waveguide cross-section to lead coupler, rectangular waveguide coupler, circular waveguide coupler, wherein rectangular wave can be divided into
It is stronger to lead coupler power ability to bear, output input mouth is standard waveguide flange, and Space Coupling structure mostly uses aperture coupling
Conjunction mode, it is relatively conventional in practical applications.In the prior art, guide directional coupler mostly individually adds Small aperture coupling structure
Work is coupling piece, or Small aperture coupling structure and straight-through transmission cavity are processed as one, and to realize coupler function, however this sets
Meter causes guide directional coupler to be multiple-layer stacked structure, and the isolation index between multilayered structure is poor；And existing waveguide
Directional coupler mostly uses absorbent structure and absorbs microwave signal, causes its length longer, component insertion loss index is poor.
Invention content
The present invention to solve the above-mentioned problems, overcome existing rectangular waveguide coupler use multilayered structure, isolation index compared with
The poor problem of difference, component insertion loss index, provides a kind of high-power rectangular waveguide dual directional coupler.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of high-power rectangular waveguide dual directional coupler, including cavity, RF coaxial adapters, coaxial load and lid
Plate, overall structure is about substantially symmetrical about its central axis；
The cover board is symmetrically fixed on the outside of the cavity by several screws, forms closed cavity；The cover board
On be provided with multiple through-holes；
The RF coaxial adapters, which are connected through a screw thread, to be fixed on outside the cover board, and the RF coaxial adapters are made
For the port of coupling output；
The coaxial load, which is connected through a screw thread, to be fixed on outside the cover board, and the coaxial load is for absorbing microwave letter
Number；
The RF coaxial adapters are separately connected a probe inner wire, the probe inner wire with the coaxial load
The through-hole is each passed through to connect with the cavity；The probe inner wire is for Distribution of Magnetic Field in adjusting cavity body；
The cavity is symmetrical integral structure, and the middle part of the cavity is straight-through transmission cavity, the straight-through transmission cavity
Outside be the coupler isolated by substrate, the straight-through transmission cavity passes through the coupling on the substrate with the coupler
Aperture connects, and rectangular waveguide flange is arranged in the both ends of the straight-through transmission cavity, and the rectangular waveguide flange is as the defeated of coupler
Enter output port；
Further, the coupler includes the first coupler and the second coupler, first coupler and described the
Two couplers are located at the straight-through transmission cavity both sides, and symmetrical about the straight-through transmission cavity, first coupler is being believed
It works when number positive transmission, second coupler works when signal reverse transfer.
Further, the coupler side setting transformation step on the substrate, the transformation step and described the
One probe inner wire and the second probe inner wire cooperation optimize Distribution of Magnetic Field in the coupler.
Further, the cover board includes the first cover board and the second cover board, and first cover board divides with second cover board
Be not symmetrically disposed on the cavity both sides, respectively by several screws by first cover board and second cover board with it is described
Cavity is fixed.
Further, the both ends on first cover board are symmetrical arranged first through hole and the second through-hole, second cover board
On both ends be symmetrical arranged third through-hole and fourth hole；
The quantity of the probe inner wire is 4, and the respectively first probe inner wire, the second probe inner wire, third are visited
Head inner wire and the 4th probe inner wire.
Further, the RF coaxial adapters include that the first RF coaxial adapters are transferred with the second RF coaxial
Device, first RF coaxial adapters are fixed on the outside of the first cover board, and second RF coaxial adaptor is fixed on
The outside of two cover boards；First RF coaxial adapters are with second RF coaxial adapters about central symmetry, difference
It is set to the different ends of first cover board and second cover board.
Further, the coaxial load includes the first coaxial load and the second coaxial load, first coaxial load
It is fixed on the outside of the first cover board, second coaxial load is fixed on the outside of the second cover board；First coaxial load with
Second coaxial load is respectively arranged at the different ends of first cover board and second cover board about central symmetry.
Further, first RF coaxial adapters are connect with the first probe inner wire, first probe
Inner wire is connect across the first through hole with first coupler；It is led in first coaxial load and second probe
Body connects, and the second probe inner wire is connect across second through-hole with first coupler；
Further, second RF coaxial adapters are connect with third probe inner wire, the third probe
Inner wire is connect across the third through-hole with second coupler；It is led in second coaxial load and the 4th probe
Body connects, and the 4th probe inner wire is connect across the fourth hole with second coupler.
Further, it is respectively provided with adjusting screw on the side wall of each coaxial load, by adjusting the adjusting screw
The depth in the coaxial load cavity is stretched into, improves Distribution of Magnetic Field in the coaxial load cavity, optimizes the coaxial load
The ability for absorbing microwave signal, to realize the adjustment of coupler directivity index.
Beneficial effects of the present invention：
Straight-through transmission cavity, coupler and coupling aperture are processed as one by the present invention, overall structure about central symmetry,
Realize that amphiorentation coupling function, coupling performance are good.The present invention absorbs microwave signal using coaxial load, reduces insertion loss.
Adjustment coupler Distribution of Magnetic Field is cooperated to using probe inner wire and step variation in the present invention, while by adjusting screw
Realize the adjustment of coupler directivity index.Structure of the invention is compact, and processing is simple, can bear the high-power of 300W, and space is close
It is strong to close performance, directionality, the degree of coupling and insertion loss index are excellent.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the cavity body structure schematic diagram of the present invention；
Wherein, 1- cavitys, the first RF coaxial adapters of 2-, the second RF coaxial adapters of 3-, the first coaxial loads of 4-,
The second coaxial loads of 5-, the first cover boards of 6-, the second cover boards of 7-, 8- first through hole, the second through-holes of 9-, 10- third through-holes, 11-
Four through-holes, 12- first pop one's head in inner wire, 13- second pop one's head in inner wire, 14- thirds pop one's head in inner wire, 15- the 4th probe in lead
Body, the first adjusting screws of 16-, the second adjusting screws of 17-, 18- lead directly to transmission cavity, the first couplers of 19-, the second couplers of 20-,
21- couples aperture, 22- rectangular waveguide flanges, and 23- first converts step, and 24- second converts step.
Specific implementation mode：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
A kind of high-power rectangular waveguide dual directional coupler, as shown in Figure 1, including cavity 1, RF coaxial adapters, same
Axle load and cover board, overall structure is about substantially symmetrical about its central axis；
The cover board is symmetrically fixed on the outside of the cavity by several screws, forms closed cavity；The cover board
On be provided with multiple through-holes；The cover board includes the first cover board 6 and the second cover board 7, first cover board 6 and second cover board
7 are symmetrically arranged in 1 both sides of the cavity, respectively by several screws by first cover board 6 and second cover board 7
It is fixed with the cavity 1.Both ends on first cover board 6 are symmetrical arranged 8 and second through-hole 9 of first through hole, second lid
Both ends on plate 7 are symmetrical arranged third through-hole 10 and fourth hole 11.
The RF coaxial adapters, which are connected through a screw thread, to be fixed on outside the cover board, and the RF coaxial adapters are made
For the port of coupling output；The RF coaxial adapters include that the first RF coaxial adapters 2 and the second RF coaxial are transferred
Device 3, first RF coaxial adapters 2 are fixed on the outside of the first cover board 6, and second RF coaxial adaptor 3 is fixed
In the outside of the second cover board 7；First RF coaxial adapters 2 are with second RF coaxial adapters 3 about center pair
Claim, is respectively arranged at the different ends of first cover board 6 and second cover board 7.
The coaxial load, which is connected through a screw thread, to be fixed on outside the cover board, and the coaxial load includes first coaxial negative
Load 4 and the second coaxial load 5, first coaxial load 4 are fixed on the outside of the first cover board 6, and second coaxial load 5 is solid
Due to the outside of the second cover board 7；First coaxial load 4, about central symmetry, is respectively set with second coaxial load 5
In the different ends of first cover board 6 and second cover board 7, first coaxial load 4 is with the second coaxial load 5 for inhaling
Receive microwave signal.
The RF coaxial adapters are separately connected a probe inner wire, the probe inner wire with the coaxial load
The through-hole is each passed through to connect with the cavity 1；The quantity of the probe inner wire is 4, is led in the respectively first probe
The probe of body 12, second inner wire 13, the third probe probe inner wire 15 of inner wire 14 and the 4th；The first probe inner wire
12, the second probe inner wire 13, third probe inner wire 14 and the 4th pop one's head in inner wire 15 for adjusting magnetic field point in cavity 1
Cloth；
First RF coaxial adapters 2 are connect with the first probe inner wire 12, the first probe inner wire
12 connect across the first through hole 8 with the cavity 1；First coaxial load 4 connects with the second probe inner wire 13
It connects, the second probe inner wire 13 is connect across second through-hole 9 with the cavity 1；
Second RF coaxial adapters 3 are connect with third probe inner wire 14, the third probe inner wire
14 connect across the third through-hole 10 with the cavity 1；Second coaxial load 5 connects with the 4th probe inner wire 15
It connects, the 4th probe inner wire 15 is connect across the fourth hole 11 with the cavity 1.
It is respectively provided with adjusting screw on the side wall of each coaxial load, is stretched by adjusting the adjusting screw described same
Depth in axle load cavity improves Distribution of Magnetic Field in the coaxial load cavity, optimizes the load absorption microwave signal
Ability, to realize the adjustment of coupler directivity index.First adjusting screw 16, institute are set on first coaxial load 4
It states and the second adjusting screw 17 is set on second coaxial load 5, when signal forward direction is transmitted, by adjusting on the first coaxial load 4
The first adjusting screw 16 realize coupler directivity index adjustment；It is coaxial by adjusting second in signal reverse transfer
The second adjusting screw 17 in load 5 realizes the adjustment of coupler directivity index.
As shown in Fig. 2, the cavity 1 is symmetrical integral structure, the middle part of the cavity 1 is straight-through transmission cavity 18,
The outside of the straight-through transmission cavity 18 is the coupler isolated by substrate, and the coupler includes the first coupler 19 and the
Two couplers 20, first coupler 19 are located at 18 both sides of straight-through transmission cavity with second coupler 20, close
Symmetrical in the straight-through transmission cavity 18, first coupler 19 works when signal forward direction is transmitted, second coupler 20
It works when signal reverse transfer.
The straight-through transmission cavity 18 is with first coupler 19 and second coupler 20 by the substrate
Coupling aperture 21 connect, the both ends of the straight-through transmission cavity 18 setting rectangular waveguide flange 22, the rectangular waveguide flange 22
Input/output port as coupler.
Coupler side setting on the substrate converts step, first coupler 19 1 on the substrate
Side setting first converts step 23,20 side of the second coupler setting the second transformation step 24 on the substrate, described
First transformation step 23 converts step 24 with described second and is both provided with two-stage step, the first transformation step 23 and described the
Two transformation steps 24 may be contained within one end of the coupler, and centered on it is symmetrical；The first transformation step 23 and described the
Two transformation steps 24 are visited with the first probe probe of inner wire 12, second inner wire 13, third probe inner wire 14 and the 4th
The head cooperation of inner wire 15 optimizes Distribution of Magnetic Field in the coupler.
First RF coaxial adapters 2 are connect with the first probe inner wire 12, the first probe inner wire
12 connect across the first through hole 8 with the cavity 1；First coaxial load 4 connects with the second probe inner wire 13
It connects, the second probe inner wire 13 is connect across second through-hole 9 with first coupler 19；
Second RF coaxial adapters 3 are connect with third probe inner wire 14, the third probe inner wire
It is connect with the cavity 1 across the third through-hole 10；Second coaxial load 5 connects with the 4th probe inner wire 15
It connects, the 4th probe inner wire 15 is connect across the fourth hole 11 with second coupler 20.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (6)
1. a kind of high-power rectangular waveguide dual directional coupler, including cavity, RF coaxial adapters, coaxial load and lid
Plate, it is characterized in that：Overall structure is about central symmetry；
The cover board is symmetrically fixed on the outside of the cavity, forms closed cavity；Multiple through-holes are provided on the cover board；
The cover board includes the first cover board and the second cover board, and first cover board is symmetrically arranged with second cover board in institute
Cavity both sides are stated, are respectively fixed first cover board and second cover board with the cavity by several screws；
The RF coaxial adapters, which are connected through a screw thread, to be fixed on outside the cover board, and the RF coaxial adapters are as coupling
Close the port of output；
The RF coaxial adapters include the first RF coaxial adapters and the second RF coaxial adapters, first radio frequency
Coaxial adatpter is fixed on the outside of the first cover board, and second RF coaxial adaptor is fixed on the outside of the second cover board；Institute
The first RF coaxial adapters are stated with second RF coaxial adapters about central symmetry, are respectively arranged at first lid
The different ends of plate and second cover board；
The coaxial load is fixed on outside the cover board, and the coaxial load is for absorbing microwave signal；
The coaxial load includes the first coaxial load and the second coaxial load, and first coaxial load is fixed on the first cover board
Outside, second coaxial load is fixed on the outside of the second cover board；First coaxial load is coaxial negative with described second
It carries about central symmetry, is respectively arranged at the different ends of first cover board and second cover board；
The RF coaxial adapters are separately connected a probe inner wire, the probe inner wire difference with the coaxial load
It is connect with the cavity across the through-hole；The probe inner wire is for Distribution of Magnetic Field in adjusting cavity body；
The cavity is symmetrical integral structure, and the middle part of the cavity is to lead directly to transmission cavity, outside the straight-through transmission cavity
Side is the coupler isolated by substrate, and the straight-through transmission cavity passes through the coupling aperture on the substrate with the coupler
Rectangular waveguide flange is arranged in the both ends of connection, the straight-through transmission cavity, and the rectangular waveguide flange is defeated as the input of coupler
Exit port；
The coupler includes the first coupler and the second coupler, and first coupler distinguishes position with second coupler
It is symmetrical about the straight-through transmission cavity in the straight-through transmission cavity both sides, first coupler work when signal forward direction is transmitted
Make, second coupler works when signal reverse transfer.
2. a kind of high-power rectangular waveguide dual directional coupler as described in claim 1, it is characterized in that：Institute on the substrate
Coupler side setting transformation step is stated, the transformation step optimizes magnetic field in the coupler with probe inner wire cooperation
Distribution.
3. a kind of high-power rectangular waveguide dual directional coupler as described in claim 1, it is characterized in that：On first cover board
Both ends be symmetrical arranged first through hole and the second through-hole, the both ends on second cover board are symmetrical arranged third through-hole and four-way
Hole；
It is described probe inner wire quantity be 4, respectively first probe inner wire, second probe inner wire, third probe in
Conductor and the 4th probe inner wire.
4. a kind of high-power rectangular waveguide dual directional coupler as claimed in claim 3, it is characterized in that：First radio frequency is same
Axis adapter is connect with the first probe inner wire, and the first probe inner wire passes through the first through hole and described first
Coupler connects；First coaxial load is connect with the second probe inner wire, and the second probe inner wire passes through institute
The second through-hole is stated to connect with the coupler.
5. a kind of high-power rectangular waveguide dual directional coupler as claimed in claim 3, it is characterized in that：Second radio frequency is same
Axis adapter is connect with third probe inner wire, and the third probe inner wire passes through the third through-hole and described second
Coupler connects；Second coaxial load is connect with the 4th probe inner wire, and the 4th probe inner wire passes through institute
Fourth hole is stated to connect with the coupler.
6. a kind of high-power rectangular waveguide dual directional coupler as described in claim 1, it is characterized in that：It is each described coaxial negative
It is respectively provided with adjusting screw on the side wall of load, the depth in the coaxial load cavity is stretched by adjusting the adjusting screw, changes
It is apt to Distribution of Magnetic Field in the coaxial load cavity, optimizes the ability that the coaxial load absorbs microwave signal, realizes coupler side
The adjustment of tropism index.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611030048.2A CN106532218B (en) | 2016-11-15 | 2016-11-15 | A kind of high-power rectangular waveguide dual directional coupler |
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| CN201611030048.2A CN106532218B (en) | 2016-11-15 | 2016-11-15 | A kind of high-power rectangular waveguide dual directional coupler |
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| CN106532218A CN106532218A (en) | 2017-03-22 |
| CN106532218B true CN106532218B (en) | 2018-10-19 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634300B (en) * | 2017-09-17 | 2019-10-15 | 江苏禹高物联科技有限公司 | Oriented opposite coupled structure |
| CN107482294B (en) * | 2017-09-17 | 2019-12-27 | 江苏南京白马现代农业高新技术产业园有限公司 | Cladding type reverse directional coupler |
| CN107978830B (en) * | 2017-11-23 | 2020-01-31 | 中国电子科技集团公司第四十一研究所 | high-power waveguide harmonic directional coupler |
| CN109786920A (en) * | 2019-03-25 | 2019-05-21 | 北京无线电测量研究所 | A kind of circular polarisation TE21Mode coupler structure |
| CN110261671B (en) * | 2019-07-15 | 2021-07-27 | 中国计量科学研究院 | Microwave power quantum measurement method and vacuum cavity measurement device |
| CN110661071A (en) * | 2019-09-19 | 2020-01-07 | 成都安擎微波科技有限责任公司 | Multi-path high-power broadband coupler |
| CN111029704A (en) * | 2019-12-17 | 2020-04-17 | 电子科技大学 | Compact waveguide bidirectional coupler |
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|---|---|---|---|---|
| AU6262090A (en) * | 1989-10-05 | 1991-04-11 | Raytheon Company | Waveguide-to-stripline directional coupler |
| WO2004075334A3 (en) * | 2003-02-14 | 2004-12-23 | Microlab Fxr | Microwave coupler |
| CN204333204U (en) * | 2015-01-04 | 2015-05-13 | 北京北广科技股份有限公司 | Directional coupler |
| CN106058411A (en) * | 2016-07-27 | 2016-10-26 | 中国电子科技集团公司第四十研究所 | Resistance compensation based coaxial dual directional coupler |
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- 2016-11-15 CN CN201611030048.2A patent/CN106532218B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6262090A (en) * | 1989-10-05 | 1991-04-11 | Raytheon Company | Waveguide-to-stripline directional coupler |
| WO2004075334A3 (en) * | 2003-02-14 | 2004-12-23 | Microlab Fxr | Microwave coupler |
| CN204333204U (en) * | 2015-01-04 | 2015-05-13 | 北京北广科技股份有限公司 | Directional coupler |
| CN106058411A (en) * | 2016-07-27 | 2016-10-26 | 中国电子科技集团公司第四十研究所 | Resistance compensation based coaxial dual directional coupler |
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