CN208738407U - Waveguide turning transition structure and orthomode coupler - Google Patents
Waveguide turning transition structure and orthomode coupler Download PDFInfo
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- CN208738407U CN208738407U CN201821381178.5U CN201821381178U CN208738407U CN 208738407 U CN208738407 U CN 208738407U CN 201821381178 U CN201821381178 U CN 201821381178U CN 208738407 U CN208738407 U CN 208738407U
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Abstract
The utility model discloses a kind of waveguide turning transition structures, for realizing the transition connection and 90 degree of turnings between rectangular waveguide and circular waveguide, waveguide turning transition structure include one group according to cross-sectional area from big to small successively the part circular waveguide of cascade and one group according to the cross-sectional area successively small rectangular waveguide of cascade from big to small；The cross-sectional shape of the part circular waveguide is by the same round part circle by the same side after series of parallel string segmentation；The broadside of the small rectangular waveguide is parallel with the broadside for the rectangular waveguide of being connected；The small rectangular waveguide of the smallest afterbody of cross-sectional area via the smallest afterbody part circular waveguide of cross-sectional area curved surface connection orthogonal with the afterbody part circular waveguide.The invention also discloses a kind of orthomode couplers of Very Low Clearance size realized based on the structure.Waveguide 90 degree turning and waveguide circumference transition are integrated in a component by the utility model, can be effectively reduced part dimension, be reduced production cost.
Description
Technical field
The utility model relates to a kind of waveguide turning transition structures, for realizing the transition between rectangular waveguide and circular waveguide
Connection and 90 degree of turnings.
Background technique
Circular waveguide is common component in microwave telecommunication system to standard rectangular waveguide transition structure, is used for circular waveguide TE11
Conversion between mode and rectangular waveguide TE10 mode.Part system needs for the transmission direction of microwave signal to turn 90 degrees, existing
Common method is realized using 90 degree of turnings of a circumference conversion and a rectangular waveguide.But volume needed for using this kind of mode
Larger, cost of implementation is high.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, a kind of waveguide turning transition is provided
Waveguide 90 degree turning and waveguide circumference transition are integrated in a component, can effectively reduce part dimension, reduce production by structure
Cost.
The utility model specifically uses following technical scheme to solve above-mentioned technical problem:
A kind of waveguide turning transition structure, connects for realizing the transition between rectangular waveguide and circular waveguide and 90 degree turn
Curved, waveguide turning transition structure includes one group according to the cross-sectional area successively part circular waveguide of cascade from big to small, and
One group according to the cross-sectional area successively small rectangular waveguide of cascade from big to small；The cross-sectional shape of the part circular waveguide is by same
The one round part circle by the same side after series of parallel string segmentation；The broadside of the small rectangular waveguide with to be connect
The broadside of rectangular waveguide is parallel；The small rectangular waveguide of the smallest afterbody of cross-sectional area is via the smallest afterbody of cross-sectional area
The connection orthogonal with the afterbody part circular waveguide of the curved surface of part circular waveguide.
Preferably, the side broadside of small rectangular waveguides at different levels and the top surface of afterbody part circular waveguide are generally aligned in the same plane
On.
Further, it is also connected with one section of circular waveguide interface in the other end of first order part circular waveguide, it is small in the first order
The other end of rectangular waveguide is also connected with one section of rectangular waveguide interface identical with the rectangular waveguide of being connect.
Preferably, the side broadside and afterbody portion of the side broadside of rectangular waveguide interface and small rectangular waveguides at different levels
The top surface of cyclotomy waveguide is in the same plane.
Preferably, the diameter of the circular waveguide interface is 0.65--0.75 times of operating center frequency wavelength.
The utility model waveguide turning transition structure may be applicable to realize between rectangular waveguide and circular waveguide simultaneously
In the component of transition connection and 90 degree of turnings, such as following technical scheme:
A kind of orthomode coupler, including circular waveguide public port, horizontal polarization directions rectangular waveguide port, vertical polarization
Direction rectangular waveguide port；Through any of the above skill between the circular waveguide public port and vertical polarization directions rectangular waveguide port
The turning transition structure connection of waveguide described in art scheme.
Further, the waveguide turning transition structure other side opposite with vertical polarization directions rectangular waveguide port connects
It is connected to horizontal direction coupling window, the other end of the horizontal direction coupling window is via level-one or the rectangle of multistage gradual change
It is connect with waveguide with horizontal polarization directions rectangular waveguide port.
Compared with prior art, technical solutions of the utility model have the advantages that
Waveguide 90 degree turning and waveguide circumference transition are integrated in a portion by the waveguide turning transition structure of the utility model
In part, part dimension can be effectively reduced, reduces production cost, and can get good echo and transmission characteristic.
The waveguide turning transition structure of the utility model can be widely applied to need while realize rectangular waveguide and circular waveguide
Between transition connection and 90 degree turn components in, part dimension can be made more compact, cost of implementation is lower.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the utility model waveguide turning one preferred embodiment of transition structure；
Fig. 2 is the schematic perspective view of Fig. 1 waveguide turning another angle of transition structure；
Fig. 3 is the vertical section structure schematic diagram of Fig. 1 waveguide turning transition structure；
Fig. 4 is the S parameter simulation result of a waveguide turning transition structure for working in Ku wave band；
Fig. 5 is the schematic perspective view of one preferred embodiment of the utility model orthomode coupler；
Fig. 6 is the schematic perspective view of another angle of Fig. 5 orthomode coupler；
Fig. 7 is the S parameter simulation result of Fig. 5 orthomode coupler.
Appended drawing reference meaning in figure is as follows:
1, circular waveguide interface, 2, rectangular waveguide interface, 3, small rectangular waveguide, 4, part circular waveguide, 5, circular waveguide common end
Mouthful, 6, horizontal polarization directions rectangular waveguide port, 7, vertical polarization directions rectangular waveguide port, 8, waveguide turning transition structure,
9, horizontal direction couples window.
Specific embodiment
For the biggish deficiency of volume present in existing waveguide turning transition structure, the utility model turns waveguide 90 degree
Curved and waveguide circumference transition is integrated in a component, to effectively reduce part dimension, reduces production cost.Specifically, this
Utility model specifically uses following technical scheme:
A kind of waveguide turning transition structure, connects for realizing the transition between rectangular waveguide and circular waveguide and 90 degree turn
Curved, waveguide turning transition structure includes one group according to the cross-sectional area successively part circular waveguide of cascade from big to small, and
One group according to the cross-sectional area successively small rectangular waveguide of cascade from big to small；The cross-sectional shape of the part circular waveguide is by same
The one round part circle by the same side after series of parallel string segmentation；The broadside of the small rectangular waveguide with to be connect
The broadside of rectangular waveguide is parallel；The small rectangular waveguide of the smallest afterbody of cross-sectional area is via the smallest afterbody of cross-sectional area
The connection orthogonal with the afterbody part circular waveguide of the curved surface of part circular waveguide.
In order to reduce size as far as possible, it is preferable that the side broadside of small rectangular waveguides at different levels and afterbody part circle wave
The top surface led is in the same plane.
For the ease of installation connection, the utility model can further progress improve: in first order part, circular waveguide is another
End is also connected with one section of circular waveguide interface, is also connected with one section and the rectangle of being connect in the other end of the small rectangular waveguide of the first order
The identical rectangular waveguide interface of waveguide.
Likewise, in order to reduce size as far as possible, it is preferable that the side broadside of rectangular waveguide interface and small rectangular waves at different levels
The top surface of the side broadside and afterbody part circular waveguide led is in the same plane.
In addition, being found through many experiments, as the 0.65-- that the diameter of the circular waveguide interface is operating center frequency wavelength
At 0.75 times, which turns transition structure with optimal echo and matching properties.
The cascade number of the part circular waveguide determines that the part circular waveguide quantity of cascade is got over according to required bandwidth of operation
More, then bandwidth of operation is bigger.Specific each section circular waveguide size can be optimized by simulation software.
For the ease of public understanding, with a preferred embodiment and carry out the technical side to the utility model in conjunction with attached drawing below
Case is described in detail:
As shown in FIG. 1 to 3, in the present embodiment waveguide turning transition structure include one group according to cross-sectional area from greatly to
The quantity of part circular waveguide 4 in part circular waveguide 4(the present embodiment of small successively cascade be two) and one group according to transversal
Successively the quantity of the small rectangular waveguide 3 in small rectangular waveguide 3(the present embodiment of cascade is two to area from big to small).Such as Fig. 1
Shown, the cross-sectional shape of the part circular waveguide 4 is by same round the same side by after series of parallel string segmentation
Part circle；The broadside of the small rectangular waveguide 3 is parallel with the broadside for the rectangular waveguide of being connected；Cross-sectional area is the smallest last
The small rectangular waveguide 3 of level-one is via the curved surface of the smallest afterbody part circular waveguide 4 of cross-sectional area and afterbody part circle
The orthogonal connection of waveguide 4.From FIG. 1 to FIG. 3 as can be seen that the waveguide turning transition structure of the utility model is equivalent to the circle to be connected
In waveguide and the step that one or more sizes are gradually reduced is respectively set on rectangular waveguide, the number of step is according to required work
Make bandwidth to determine, the specific size of step can be obtained by simulation software simulation optimization.
As shown in FIG. 1 to 3, for the ease of connecting, the other end of the first order part circular waveguide 4 in the present embodiment also connects
It is connected to one section of circular waveguide interface 1, is also connected with one section and the rectangular waveguide of being connect in the other end of the small rectangular waveguide 3 of the first order
Identical rectangular waveguide interface 2.In order to reduce volume as far as possible, the side broadside of the rectangular waveguide interface 2 in the present embodiment with
The side broadside of small rectangular waveguides 3 at different levels and the top surface of afterbody part circular waveguide 4 are in the same plane.In order to obtain
Preferable echo and transmission characteristic, the diameter of circular waveguide interface 1 are preferably 0.65--0.75 times of operating center frequency wavelength, this
The diameter of circular waveguide interface 1 is 0.7 times of operating center frequency wavelength in embodiment.
Fig. 4 gives the S parameter simulation result of waveguide turning transition structure, works in Ku wave band, using Fig. 1~
Structure shown in Fig. 3.Figure 4, it is seen that the structure has preferable characteristic in about 15% relative bandwidth.
The utility model waveguide turning transition structure can be widely applied to need to realize simultaneously rectangular waveguide and circular waveguide it
Between transition connection and 90 degree turn components in, to keep part dimension more compact, cost of implementation is lower.With orthogonal mode
For coupler (OMT), OMT is a kind of common device in microwave communication, and major function is the gentle vertical polarization of two path water
The separation or synthesis of signal.Orthomode coupler the most common form has window coupled mode and metallic membrane separation at present
Polarization；Other also useful more steel needles separate polarization.But the orthomode coupler that existing these types mode is realized
There is a problem of that height is higher, volume is larger, in the higher occasion of small form factor requirements, the OMT volume of above-mentioned several forms is all
It is larger, it is unfavorable for the system integration and parts count is more, causes higher cost.Therefore, it turned using the utility model waveguide
Structure is crossed to optimize to the structure of orthomode coupler, to reduce component height.
Fig. 5, Fig. 6 are shown using the OMT structure after the utility model waveguide turning transition structure optimization.Such as Fig. 5, Fig. 6
Shown, similar with existing OMT, which equally has circular waveguide public port 5, horizontal polarization directions rectangular waveguide port 6, hangs down
Straight polarization direction rectangular waveguide port 7；But unlike the prior art, circular waveguide public port 5 and vertical polarization directions square
Waveguide turning transition structure 8 between shape waveguide port 7 through the utility model connects, and waveguide turning transition structure 8 is Fig. 1
The turning transition structure of waveguide shown in~Fig. 3.6 in Fig. 5 couple window for horizontal direction, with horizontal polarization directions rectangular waveguide
Between port 6 and by level-one or the rectangle matched waveguide connection of multistage gradual change, series is more, and the matched bandwidth of institute's energy is got over
Greatly.
Fig. 7 gives the S parameter simulation result of the orthomode coupler, as can be seen from the figure arrives in 23.4GHz
In 24.3GHz frequency range, the reflection coefficient S33 of the reflection coefficient S22 of horizontal polarization directions and vertical polarization directions below-
21dB, better performances.
The short transverse full-size of the orthomode coupler is less than a wavelength of operating center frequency, and size is very tight
It gathers, the size much smaller than the orthomode coupler OMT that current routine techniques is realized is conducive to the miniaturization of system, especially exists
Some pairs of volumes and the exigent field of total amount, such as space satellite communication etc..And the OMT only needs two part compositions,
The problem of completely by being machined, being then completed by screw, assembling and be brazed there is no diaphragm, processes and is produced into
This and reliability can match in excellence or beauty the orthomode coupler of window coupled mode, but the size of volume especially short transverse completely
It is much smaller, and cost is cheaper.
Claims (7)
- The transition structure 1. a kind of waveguide is turned, connects for realizing the transition between rectangular waveguide and circular waveguide and 90 degree turn It is curved, which is characterized in that waveguide turning transition structure includes one group according to the cross-sectional area successively part of cascade from big to small Circular waveguide and one group are according to the cross-sectional area successively small rectangular waveguide of cascade from big to small；The part circular waveguide it is transversal Face shape is by the same round part circle by the same side after series of parallel string segmentation；The broadside of the small rectangular waveguide It is parallel with the broadside for the rectangular waveguide of being connected；The small rectangular waveguide of the smallest afterbody of cross-sectional area via cross-sectional area most The connection orthogonal with the afterbody part circular waveguide of the curved surface of small afterbody part circular waveguide.
- The transition structure 2. waveguide as described in claim 1 is turned, which is characterized in that the side broadside of small rectangular waveguides at different levels with most The top surface of rear stage part circular waveguide is in the same plane.
- The transition structure 3. waveguide as described in claim 1 is turned, which is characterized in that the other end of circular waveguide is also in first order part It is connected with one section of circular waveguide interface, is also connected with one section and the rectangular waveguide of being connect in the other end of the small rectangular waveguide of the first order Identical rectangular waveguide interface.
- The transition structure 4. waveguide as claimed in claim 3 is turned, which is characterized in that the side broadside of rectangular waveguide interface with it is at different levels The side broadside of small rectangular waveguide and the top surface of afterbody part circular waveguide are in the same plane.
- The transition structure 5. waveguide as claimed in claim 3 is turned, which is characterized in that the diameter of the circular waveguide interface is in work 0.65--0.75 times of frequency of heart wavelength.
- 6. a kind of orthomode coupler, including circular waveguide public port, horizontal polarization directions rectangular waveguide port, vertical polarization side To rectangular waveguide port；It is characterized in that, being passed through between the circular waveguide public port and vertical polarization directions rectangular waveguide port By the waveguide turning transition structure connection of any one of Claims 1 to 5.
- 7. orthomode coupler as claimed in claim 6, which is characterized in that the waveguide turning transition structure and vertical polarization side The other side opposite to rectangular waveguide port is connected with horizontal direction coupling window, the other end of the horizontal direction coupling window It is connect via the rectangle matched waveguide of level-one or multistage gradual change with horizontal polarization directions rectangular waveguide port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821381178.5U CN208738407U (en) | 2018-08-27 | 2018-08-27 | Waveguide turning transition structure and orthomode coupler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821381178.5U CN208738407U (en) | 2018-08-27 | 2018-08-27 | Waveguide turning transition structure and orthomode coupler |
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| CN208738407U true CN208738407U (en) | 2019-04-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923107A (en) * | 2018-08-27 | 2018-11-30 | 江苏贝孚德通讯科技股份有限公司 | Waveguide turning transition structure and orthomode coupler |
| CN112563710A (en) * | 2020-12-07 | 2021-03-26 | 江苏亨通太赫兹技术有限公司 | E-band orthogonal mode coupler |
| CN114124243A (en) * | 2022-01-27 | 2022-03-01 | 电子科技大学 | High-isolation terahertz orthogonal mode isolation duplexer easy to machine |
| CN114583429A (en) * | 2020-11-30 | 2022-06-03 | 京东方科技集团股份有限公司 | Waveguide conversion structure, waveguide feed network and antenna system |
-
2018
- 2018-08-27 CN CN201821381178.5U patent/CN208738407U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923107A (en) * | 2018-08-27 | 2018-11-30 | 江苏贝孚德通讯科技股份有限公司 | Waveguide turning transition structure and orthomode coupler |
| CN108923107B (en) * | 2018-08-27 | 2024-01-30 | 江苏贝孚德通讯科技股份有限公司 | Waveguide turning transition structure and orthogonal mode coupler |
| CN114583429A (en) * | 2020-11-30 | 2022-06-03 | 京东方科技集团股份有限公司 | Waveguide conversion structure, waveguide feed network and antenna system |
| CN114583429B (en) * | 2020-11-30 | 2024-04-16 | 京东方科技集团股份有限公司 | Waveguide conversion structure, waveguide feed network and antenna system |
| CN112563710A (en) * | 2020-12-07 | 2021-03-26 | 江苏亨通太赫兹技术有限公司 | E-band orthogonal mode coupler |
| CN112563710B (en) * | 2020-12-07 | 2022-02-01 | 江苏亨通太赫兹技术有限公司 | E-band orthogonal mode coupler |
| CN114124243A (en) * | 2022-01-27 | 2022-03-01 | 电子科技大学 | High-isolation terahertz orthogonal mode isolation duplexer easy to machine |
| CN114124243B (en) * | 2022-01-27 | 2022-05-03 | 电子科技大学 | High-isolation terahertz orthogonal mode isolation duplexer easy to machine |
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Granted publication date: 20190412 |