CN203026625U - Waveguide orthogonal mode converter for antenna feed system - Google Patents
Waveguide orthogonal mode converter for antenna feed system Download PDFInfo
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- CN203026625U CN203026625U CN 201220695940 CN201220695940U CN203026625U CN 203026625 U CN203026625 U CN 203026625U CN 201220695940 CN201220695940 CN 201220695940 CN 201220695940 U CN201220695940 U CN 201220695940U CN 203026625 U CN203026625 U CN 203026625U
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Abstract
The utility model discloses a waveguide orthogonal mode converter for an antenna feed system. The waveguide orthogonal mode converter comprises an impedance converter (1), a main arm (2), a coupling branch A (3), a coupling branch B (4), a diaphragm (7), a tuning screw (8), an asynchronous coupling window (5) and a triangular wedge bulge structure (6). According to the waveguide orthogonal mode converter, by virtue of the asynchronous coupling window (5) and the triangular wedge bulge structure (6) at the top of the asynchronous coupling window (5), a reflection coefficient between the coupling branch B (4) and the main arm (2) is effectively improved, and the signal passing capability is improved; and meanwhile, a high isolation degree between the coupling branch A (3) and the coupling branch B (4) is kept, so that signal crosstalk between the two coupling branches is effectively avoided, and the whole performance of the orthogonal mode converter is improved.
Description
Technical field
The utility model relates to a kind of waveguide orthomode transducer, particularly a kind of waveguide orthomode transducer for antenna transmission system.
Background technology
Orthomode transducer is a kind of waveguide component that is widely used in antenna and feeder system.Particularly in high Capacity Communication System, can solve the channeling problem.The channel that can use the polarization mode difference and mutually isolate on same frequency can hold maximum channel quantity like this.
In the world, orthomode transducer has multiple implementation.Wherein diaphragm/branching type orthomode transducer, also claim arrowband II type, is a kind of structure commonly used.The characteristics of this structure are that diaphragm is incorporated into the effect that separate to play pattern orthomode transducer inside.But this structure all adopts the symmetrical coupled window, and the coupling window of this type easily produces larger standing wave on other arm, thereby has affected the overall performance of orthomode transducer.
The utility model content
The utility model purpose is to provide a kind of waveguide orthomode transducer for antenna transmission system, solves the dissatisfactory problem of conventional orthogonal mode converter port Impedance coupling.
A kind of waveguide orthomode transducer for antenna transmission system comprises: impedance transformer, principal arm, the coupling A of branch, the coupling B of branch, diaphragm and tuning screw also comprise: asymmetric coupling window and triangle wedge bulge-structure.
The material of all compositions of waveguide orthomode transducer is metal.Principal arm is the square structure, and the coupling A of branch and the coupling B of branch are the standard rectangular waveguiding structure.Impedance transformer, principal arm and the machine-shaping of the coupling A of branch three in one.The coupling B of branch vertically is placed in middle position, principal arm surface, and the coupling B of branch and principal arm are welded and fixed.The broadside of the coupling B of branch is perpendicular to the broadside of the coupling A of branch, and the narrow limit of the coupling B of branch is parallel to the actinal surface of principal arm.
Diaphragm is thickness less than the sheet metal of 0.1 millimeter, is placed in the principal arm central plane, and is parallel to the actinal surface of the B of branch that is coupled.Diaphragm length less than or equal to principal arm length half.Principal arm is upper part and lower part, and upper part and lower part are welded and fixed, and diaphragm is placed between part and bottom divide.
Tuning screw is placed on the center line of the coupling B of branch broadside, and tuning screw is fixed with the broadside screw thread of the coupling B of branch.
Asymmetric coupling window is a rectangular window, is placed in the position that is connected with principal arm of the coupling B of branch, and its center is placed in the B of the branch center of being coupled away from more than 0.05 central task wavelength of impedance transformer direction.
Triangle wedge bulge-structure is isosceles triangle, and height is less than or equal to 0.2 central task wavelength, and the base width is less than or equal to the long hem width degree of the coupling B of branch, and triangle wedge bulge-structure is placed in the top of asymmetric coupling window.Triangle wedge bulge-structure and principal arm are adhesively fixed.
During work, on the orthomode transducer principal arm, the signal of feed-in contains TE
10And TE
01Two orthogonal modess.Diaphragm is used for guaranteeing only having the TE in principal arm
10The electromagnetic wave of pattern can pass to the coupling A of branch.In order to make impedance matching between the coupling A of branch with Rectangular Waveguide Structure and the principal arm with square-wave guide structure, need between to increase impedance transformer, this impedance transformer adopts the stairstepping transition structure.The rectangular waveguide direction of the coupling B of branch has determined to only have the TE in principal arm
01The electromagnetic wave of pattern can be along this branch's transmission.For the reflection that reduces to be coupled between the B of branch and principal arm, two structures of triangle wedge bulge-structure and asymmetric coupling window have been increased.Wherein triangle wedge bulge-structure is placed in the top of asymmetric coupling window.The coupling window misalignment coupling B of branch central axis.Introducing due to triangle wedge bulge-structure and asymmetric coupling window, make the reflection quilt between the coupling B of branch and principal arm obviously reduce, effectively improved the port standing wave performance of orthomode transducer, and kept simultaneously having very high isolation between each port.Tuning screw on the coupling B of branch is used for the standing wave in this branch is further finely tuned.The introducing of triangle wedge projection and asymmetric coupling window has effectively improved the reflection coefficient between the coupling B of branch and principal arm, has improved the trafficability characteristic of signal; Keep simultaneously two couplings higher isolation to be arranged between branch, effectively avoided crosstalking of signal between two coupling branches, thereby improved the overall performance of orthomode transducer.
The utility model has effectively improved the reflection coefficient between the coupling B of branch and principal arm by the introducing of the triangle wedge bulge-structure at asymmetric coupling window and top thereof, has improved the trafficability characteristic of signal; Keep simultaneously two couplings higher isolation to be arranged between branch, effectively avoided crosstalking of signal between two coupling branches, thereby improved the overall performance of orthomode transducer.This device proposes asymmetric coupling window, and the design of original diaphragm/branching type orthomode transducer does not comprise the asymmetric coupling window in the utility model.Original coupling window center all is positioned at the center of the coupling B of branch rectangular waveguide, belongs to the coupling window of symmetric form.This structure easily causes larger reflection between the coupling B of branch and principal arm.Although original design has tuning screw equally, because volume reflection is larger, the effect of tuning screw can not finely embody.Asymmetric coupling window has also improved the reflection between the coupling B of branch and principal arm.Increased triangle wedge shape bulge-structure above asymmetric coupling window.Being introduced in when reflecting between effective improvement coupling B of branch and principal arm of this structure also can not destroyed transmission path between the coupling A of branch and principal arm, and isolation also is improved effect.The tradition bulge-structure is platform shape bulge-structure, thereby easily causes larger change in the instantaneous impedance to affect the reflection characteristic of coupling branch.
Description of drawings
The stereogram of a kind of waveguide orthomode transducer for antenna transmission system of Fig. 1;
The cutaway view of a kind of waveguide orthomode transducer for antenna transmission system of Fig. 2.
1. the impedance transformer 2. principal arms 3. coupling A of branch 4. asymmetric coupling windows of the coupling B of branch 5.
6. triangle wedge bulge-structure 7. diaphragm 8. tuning screws.
Embodiment
A kind of waveguide orthomode transducer for antenna transmission system comprises: impedance transformer 1, principal arm 2, the coupling A3 of branch, the coupling B4 of branch, diaphragm 7 and tuning screw 8 also comprise: asymmetric coupling window 5 and triangle wedge bulge-structure 6.
The material of all compositions of waveguide orthomode transducer is metal.Principal arm 2 is the square structure, and the coupling A3 of branch and the coupling B4 of branch are the standard rectangular waveguiding structure.Impedance transformer 1, principal arm 2 and the machine-shaping of the coupling A3 of branch three in one.The coupling B4 of branch vertically is placed in the positions of principal arm 2 centres, surface, and the coupling B4 of branch and principal arm 2 are welded and fixed.The broadside of the coupling B4 of branch is perpendicular to the broadside of the coupling A3 of branch, and the narrow limit of the coupling B4 of branch is parallel to the actinal surface of principal arm 2.
Tuning screw 8 is placed on the center line of the coupling B4 of branch broadside, and tuning screw 8 is fixed with the broadside screw thread of the coupling B4 of branch.
5 mouthfuls of asymmetric coupling windows are a rectangular window, are placed in the position that the coupling B4 of branch is connected with principal arm 2, and its center is placed in the B4 of the branch center of being coupled away from more than 0.05 central task wavelength of impedance transformer 1 direction.
Triangle wedge bulge-structure 6 is isosceles triangle, and height is less than or equal to 0.2 central task wavelength, and the base width is less than or equal to the long hem width degree of the coupling B4 of branch, and triangle wedge bulge-structure 6 is placed in the top of 5 mouthfuls of asymmetric coupling windows.Triangle wedge bulge-structure 6 is adhesively fixed with principal arm 2.
During work, on orthomode transducer principal arm 2, the signal of feed-in contains TE10 and two orthogonal modess of TE01.Diaphragm 7 is used for guaranteeing to only have the electromagnetic wave of the TE10 pattern in principal arm 2 can pass to the coupling A3 of branch.In order to make impedance matching between the coupling A3 of branch with Rectangular Waveguide Structure and the principal arm 2 with square-wave guide structure, need between to increase impedance transformer 1, this impedance transformer 1 adopts the stairstepping transition structure.The rectangular waveguide direction of the coupling B4 of branch has determined to only have the electromagnetic wave of the TE01 pattern in principal arm 2 to transmit along this branch.For the reflection that reduces to be coupled between the B4 of branch and principal arm 2,5 two structures of triangle wedge bulge-structure 6 and asymmetric coupling window have been increased.Wherein triangle wedge bulge-structure 6 is placed in the top of 5 mouthfuls of asymmetric coupling windows.The coupling window misalignment coupling B4 of branch central axis.Introducing due to 5 mouthfuls of triangle wedge bulge-structure 6 and asymmetric coupling windows, make the reflection quilt between the coupling B4 of branch and principal arm 2 obviously reduce, effectively improved the port standing wave performance of orthomode transducer, and kept simultaneously having very high isolation between each port.Tuning screw 8 on the coupling B4 of branch is used for the standing wave in this branch is further finely tuned.The introducing of triangle wedge projection and asymmetric coupling window 5 has effectively improved the reflection coefficient between the coupling B4 of branch and principal arm 2, has improved the trafficability characteristic of signal; Keep simultaneously two couplings higher isolation to be arranged between branch, effectively avoided crosstalking of signal between two coupling branches, thereby improved the overall performance of orthomode transducer.
Claims (1)
1. waveguide orthomode transducer that is used for antenna transmission system, comprise: impedance transformer (1), principal arm (2), the coupling A(3 of branch), the coupling B(4 of branch), diaphragm (7) and tuning screw (8), characterized by further comprising: asymmetric coupling window (5) and triangle wedge bulge-structure (6);
The material of all compositions of waveguide orthomode transducer is metal; Principal arm (2) is the square structure, the coupling A(3 of branch) and the B(4 of branch that is coupled) be the standard rectangular waveguiding structure; Impedance transformer (1), principal arm (2) and the coupling A(3 of branch) three in one machine-shaping; The coupling B(4 of branch) vertically be placed in middle position, principal arm (2) surface, the coupling B(4 of branch) be welded and fixed with principal arm (2); The coupling B(4 of branch) broadside is perpendicular to the coupling A(3 of branch) broadside, the coupling B(4 of branch) narrow limit be parallel to the actinal surface of principal arm (2);
Diaphragm (7) is thickness less than the sheet metal of 0.1 millimeter, is placed in principal arm (2) central plane, and is parallel to the coupling B(4 of branch) actinal surface; Diaphragm (7) length less than or equal to principal arm (2) length half; Principal arm (2) is upper part and lower part, and upper part and lower part are welded and fixed, and diaphragm (7) is placed between part and bottom divide;
Tuning screw (8) is placed in the coupling B(4 of branch) on the center line of broadside, tuning screw (8) and the coupling B(4 of branch) the broadside screw thread fix;
Asymmetric coupling window (5) mouthful is a rectangular window, is placed in the coupling B(4 of branch) position that is connected with principal arm (2), its center is placed in the B(4 of branch that is coupled) center is away from more than 0.05 central task wavelength of impedance transformer (1) direction;
Triangle wedge bulge-structure (6) is isosceles triangle, height is less than or equal to 0.2 central task wavelength, the base width is less than or equal to the coupling B(4 of branch) long hem width degree, triangle wedge bulge-structure (6) is placed in the top of asymmetric coupling window (5) mouth; Triangle wedge bulge-structure (6) is adhesively fixed with principal arm (2);
During work, the signal of the upper feed-in of orthomode transducer principal arm (2) contains TE10 and two orthogonal modess of TE01; The electromagnetic wave of the TE10 pattern that diaphragm (7) is used for guaranteeing to only have principal arm in (2) can pass to the coupling A(3 of branch); In order to make the coupling A(3 of branch with Rectangular Waveguide Structure) and have impedance matching between the principal arm (2) of square-wave guide structure, need between to increase impedance transformer (1), this impedance transformer (1) adopts the stairstepping transition structure; The coupling B(4 of branch) rectangular waveguide direction has determined to only have the electromagnetic wave of the TE01 pattern in principal arm (2) to transmit along this branch; In order to reduce the B(4 of branch that is coupled) and principal arm (2) between reflection, increased (5) two structures of triangle wedge bulge-structure (6) and asymmetric coupling window; Wherein triangle wedge bulge-structure (6) is placed in the top of asymmetric coupling window (5) mouth; The coupling window misalignment coupling B(4 of branch) central axis; Introducing due to triangle wedge bulge-structure (6) and asymmetric coupling window (5) mouth, make the coupling B(4 of branch) and principal arm (2) between reflection quilt obviously reduce, effectively improved the port standing wave performance of orthomode transducer, and kept simultaneously having very high isolation between each port; The coupling B(4 of branch) tuning screw (8) on is used for the standing wave in this branch is further finely tuned; The introducing of triangle wedge projection and asymmetric coupling window (5) has effectively improved the coupling B(4 of branch) and principal arm (2) between reflection coefficient, improved the trafficability characteristic of signal; Keep simultaneously two couplings higher isolation to be arranged between branch, effectively avoided crosstalking of signal between two coupling branches, thereby improved the overall performance of orthomode transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695940 CN203026625U (en) | 2012-12-17 | 2012-12-17 | Waveguide orthogonal mode converter for antenna feed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695940 CN203026625U (en) | 2012-12-17 | 2012-12-17 | Waveguide orthogonal mode converter for antenna feed system |
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| CN203026625U true CN203026625U (en) | 2013-06-26 |
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| CN 201220695940 Expired - Fee Related CN203026625U (en) | 2012-12-17 | 2012-12-17 | Waveguide orthogonal mode converter for antenna feed system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617359A (en) * | 2015-02-16 | 2015-05-13 | 成都赛纳赛德科技有限公司 | Orthogonal mode adaptor |
| CN106487353A (en) * | 2015-08-28 | 2017-03-08 | 香港城市大学深圳研究院 | Single-ended signal is converted to device, method and the system of differential signal |
| CN110364795A (en) * | 2019-08-05 | 2019-10-22 | 中电科仪器仪表有限公司 | A kind of compact vertical coupling band logical waveguide filter |
-
2012
- 2012-12-17 CN CN 201220695940 patent/CN203026625U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617359A (en) * | 2015-02-16 | 2015-05-13 | 成都赛纳赛德科技有限公司 | Orthogonal mode adaptor |
| CN104617359B (en) * | 2015-02-16 | 2018-06-12 | 成都赛纳赛德科技有限公司 | Orthogonal mode adapter |
| CN106487353A (en) * | 2015-08-28 | 2017-03-08 | 香港城市大学深圳研究院 | Single-ended signal is converted to device, method and the system of differential signal |
| CN106487353B (en) * | 2015-08-28 | 2021-09-28 | 香港城市大学深圳研究院 | Device, method and system for converting single-end signal into differential signal |
| CN110364795A (en) * | 2019-08-05 | 2019-10-22 | 中电科仪器仪表有限公司 | A kind of compact vertical coupling band logical waveguide filter |
| CN110364795B (en) * | 2019-08-05 | 2021-04-30 | 中电科思仪科技股份有限公司 | Compact vertical coupling band-pass waveguide filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20141217 |
|
| EXPY | Termination of patent right or utility model |