CN116435738A - Ridge waveguide coaxial converter output from H face - Google Patents
Ridge waveguide coaxial converter output from H face Download PDFInfo
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- CN116435738A CN116435738A CN202310461603.0A CN202310461603A CN116435738A CN 116435738 A CN116435738 A CN 116435738A CN 202310461603 A CN202310461603 A CN 202310461603A CN 116435738 A CN116435738 A CN 116435738A
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- ridge waveguide
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- 238000004891 communication Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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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
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
- H01P5/103—Hollow-waveguide/coaxial-line transitions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to a ridge waveguide coaxial converter output from an H surface, which comprises a shell, wherein a cavity of a ridge waveguide structure is formed in the shell, one end of the cavity is sealed by an end cover connected with the shell, the other end of the cavity is open, a connector coaxial port communicated with the cavity is arranged on the H surface of the shell, a compensation step is arranged at one end of the cavity, which is positioned on the ridge, and comprises at least one turning step bent towards the H surface by 90 degrees, a connecting part is arranged on the turning step, and the connecting part is coaxially arranged with the connector coaxial port and is used for being connected with an inner core of a connector. The invention realizes the signal output from the narrow wall of the ridge waveguide on the premise of miniaturization of volume and weight.
Description
Technical Field
The invention relates to the technical field of electronic communication equipment, in particular to a ridge waveguide coaxial converter output from an H face.
Background
The ridge waveguide has the characteristics of small section, low cut-off frequency of a main mode, wide working frequency band and small characteristic impedance, and is widely applied to various radar systems. The ridge waveguide coaxial conversion is an important conversion device in a ridge waveguide circuit and is used for converting electromagnetic wave signals in the ridge waveguide into coaxial or microstrip transmission lines, so that the system is convenient for subsequent signal processing. The ridge waveguide coaxial converter converts a main mode TE01 mode signal transmitted in a ridge waveguide into a TEM mode signal in a coaxial transmission line, and is easy to couple from an E-plane (wide wall) or end-plane according to the mode distribution characteristics of the TE01 mode. Therefore, at present, two types of ridge waveguide coaxial conversion are most common, and the first type is that an orthogonal mode coaxial output port is positioned on the E surface (wide wall) of the ridge waveguide; the second is a terminated version, with the coaxial ports being coupled out by the end face of the ridge waveguide.
In radar electronic systems, due to the layout of the system structure and the miniaturization requirement of the system, electromagnetic wave signals often need to be directly coupled out from the H-plane (narrow wall) of the ridge waveguide in order for the system to perform signal processing. In this case, both of the above-mentioned waveguide coaxial transitions cannot achieve a direct output from the narrow wall of the waveguide due to inherent drawbacks of their structure. But must be implemented in conjunction with an L-connector or a series of turns of the cable. The L-shaped connector needs to be arranged outside the ridge waveguide, the input end of the L-shaped connector is arranged on the wide wall of the ridge waveguide, and the output end of the L-shaped connector is turned to the direction of the narrow wall through a turning structure. The disadvantages of this structure are: first, the performance of the L-type connector is poor in echo and insertion loss in a higher frequency band, and the ridge waveguide is often used in a wide band and a higher frequency band range, so that the performance is poor. Secondly, the L-shaped connector can be increased by more than ten millimeters in the length direction, so that the size and the weight of the converter are increased, the miniaturization design of the system is not facilitated, and meanwhile, the complexity of the system is increased, and the cost is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a ridge waveguide coaxial converter output from an H surface, and aims to realize the signal output from a narrow wall of a ridge waveguide on the premise of ensuring volume and weight miniaturization.
The technical scheme adopted by the invention is as follows:
the application provides a from coaxial converter of ridge waveguide of H face output, which comprises a housin, be formed with the cavity of ridge waveguide structure in the casing, cavity one end is closed by the end cover that links to each other with the casing, the cavity other end opening, be equipped with on the H face of casing with the coaxial port of connector of cavity intercommunication, the one end that lies in the ridge in the cavity is equipped with the compensation step, the compensation step includes at least one turn step of 90 bending to H face direction, be equipped with connecting portion on the turn step, connecting portion with coaxial port coaxial setting of connector for be connected with the inner core of connector.
The further technical scheme is as follows:
the compensation step also comprises a plurality of long steps extending along the length direction of the ridge, the heights of the long steps and the turning steps are gradually increased along the direction from the end part of the ridge to the H surface, namely, the height of the turning step closest to the H surface is highest, and the height of the long step closest to the end part of the ridge is lowest.
The connecting portion is a positioning groove arranged on the top surface of the turning step and used for positioning when being welded with the inner core.
Gaps are formed between the end face of the turning step along the length direction of the ridge and the end face of the cavity close to the turning step and between the turning step and the side face of the cavity, and the side face of the cavity is a side face corresponding to the H face of the shell.
At least one tuning screw is arranged on the E surface of the shell.
The mounting hole of the tuning screw is not in communication with the cavity.
The at least one tuning screw is located directly above the ridge.
The beneficial effects of the invention are as follows:
the invention realizes the conversion from the electromagnetic wave ridge waveguide mode to the coaxial TEM mode. The coaxial port is arranged on the narrow wall of the ridge waveguide, and the narrow wall output of the ridge waveguide is realized through welding the turning step and the coaxial inner core. The whole structure has the advantages of high reliability, small insertion loss, low standing wave, large bandwidth and small volume.
The long step and the turning step reduce the characteristic impedance of the ridge waveguide and realize the coaxial impedance matching with the coaxial connector.
The tuning screw can effectively increase the working bandwidth of the converter and compensate machining errors.
Additional features and advantages of the invention will be set forth in the description which follows, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of the internal structure of embodiment 1 of the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a bottom view of the internal structure of embodiment 2 of the present invention.
Fig. 5 is a cross-sectional view of section A-A of fig. 4.
Fig. 6 is a frequency response simulation graph of embodiment 1 of the present invention.
In the figure: 1. a cavity; 2. a connector coaxial port; 3. a tuning screw; 4. an end cap; 5. a mounting hole; 6. a ridge; 7. turning steps; 8. a circular arc section; 9. a long step; 10. e surface; 11. h surface; 12. e face.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings.
Example 1
Referring to fig. 1 and 2, a ridge waveguide coaxial converter output from an H-plane of the present embodiment includes a housing, in which a cavity 1 of a ridge waveguide structure is formed, one end of the cavity 1 is closed by an end cap 4 connected to the housing, and the other end of the cavity 1 is open; the H face 11 of the shell is provided with a coaxial connector port communicated with the cavity, one end, located at the ridge 6, of the cavity 1 is provided with a compensation step, the compensation step comprises at least one turning step 7 bent towards the H face 11 by 90 degrees, the turning step 7 is provided with a connecting portion, and the connecting portion and the coaxial connector port 2 are coaxially arranged and are used for being connected with an inner core of the connector.
The embodiment can be used for turning electromagnetic wave signals in the ridge waveguide into coaxial or microstrip transmission lines, and is convenient for subsequent signal processing by the system. Specifically, by providing the turning step 7 at the end of the ridge 6, the connector coaxial port 2 is disposed on the narrow wall (i.e. the H-plane 11) of the ridge waveguide, and can be connected with an external system through a 50 ohm coaxial connector (or a microstrip line port as required), the turning step 7 can be used to reduce the characteristic impedance of the ridge waveguide, realize coaxial impedance matching with 50 coupling, so that a signal of a TEM mode is directly output from the narrow wall (H-plane) of the ridge waveguide, and realize the narrow wall output of the ridge waveguide. Meanwhile, the embodiment has simple and compact structure, is convenient for assembly, and is beneficial to reducing the overall size of the system.
The turning step 7 may be set to be rectangular as a whole, and the echo of the whole wave co-conversion can be improved by controlling the dimensions of both the length and width directions of the turning step 7.
Referring to fig. 3, gaps are formed between the end surfaces of the turning steps 7 along the length direction of the ridge 6 and the end surfaces of the cavity close to the turning steps, and between the turning steps and the side surfaces of the cavity (the side surface corresponding to the H surface of the shell), wherein the two gaps are x and y respectively, and the control of the sizes of the two gaps also helps to improve the echo of the coaxial conversion of the whole waveguide.
In this embodiment, the connection portion is specifically a positioning groove provided on the top surface of the turning step 7, the inner core of the coaxial port 2 of the available connector is positioned, and the inner core is placed in the positioning groove and then welded.
Through designing the positioning groove, welding positioning is extremely convenient, and the installation tolerance is easy to position and control.
In the above embodiment, referring to fig. 2, the compensating step further includes a plurality of long steps 9 extending along the length direction of the ridge 6, and the heights of the long steps 9 and the turning steps 7 gradually increase in the direction of the H-plane 11 along the end of the ridge 6, that is, the height of the turning step 7 closest to the H-plane is highest, and the height of the long step 9 closest to the end of the ridge is lowest.
The long steps and the turning steps can be used to reduce the characteristic impedance of the ridge waveguide and achieve coaxial impedance matching coupled with 50. The greater the number of long steps and/or turning steps, the wider the corresponding bandwidth requirements. The specific number of steps is determined by the bandwidth required to operate.
The last long step 9 and the turning step 7 can be connected in series by a circular arc section 8.
Example 2
A ridge waveguide coaxial converter of the present embodiment, which is output from the H-plane, is different from embodiment 1 in that two long steps 9, two turning steps 7 are provided, and the heights of the long steps and the turning steps gradually increase toward the H-plane, see fig. 4 and 5.
For the ridge waveguide coaxial converters of embodiments 1 and 2 output from the H-plane, referring to fig. 1 and 5, at least one tuning screw 3 is provided on the E-plane 10 of the housing. The tuning screw 3 is fixed in a mounting hole 5 provided on the E-face 10 by a nut, and the mounting hole 5 is not in communication with the cavity 1.
The tuning screw can effectively increase the working bandwidth of the converter and can compensate machining errors.
The tuning screws are not limited to one, and a plurality of tuning screws may be provided as needed to obtain a wider bandwidth.
Specifically, the tuning screw 3 is disposed directly above the ridge 6.
Referring to fig. 6, which is a simulation graph of the present embodiment 1, it can be seen that the ridge waveguide coaxial converter has very good performance with a relative operating bandwidth of more than 20%.
The specific parameter design of the steps in the above embodiment can be obtained by adopting electromagnetic simulation software HFSS and CST to simulate and optimize.
Those of ordinary skill in the art will appreciate that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a from the coaxial converter of ridge waveguide of H face output, includes the casing, is formed with the cavity of ridge waveguide structure in the casing, cavity one end is closed by the end cover that links to each other with the casing, the cavity other end opening, its characterized in that, be equipped with on the H face of casing with the coaxial port of connector of cavity intercommunication, be equipped with the compensation step in the one end that lies in the ridge in the cavity, the compensation step includes at least one turn step of 90 bending to H face direction, be equipped with connecting portion on the turn step, connecting portion with coaxial port coaxial setting of connector for be connected with the inner core of connector.
2. The ridge waveguide coaxial converter of claim 1, wherein the compensation step further comprises a plurality of long steps extending along the length of the ridge, the height of the long steps and the turning steps gradually increasing in the direction of the H-plane along the end of the ridge, i.e. the height of the turning step closest to the H-plane is highest and the height of the long step closest to the end of the ridge is lowest.
3. The ridge waveguide coaxial converter of claim 1, wherein the connecting portion is a positioning groove provided on a top surface of the turning step for positioning when welded to the inner core.
4. The ridge waveguide coaxial converter according to claim 1, wherein gaps are formed between an end face of the turning step in the ridge length direction and a cavity end face adjacent thereto and between a cavity side face which is a side face corresponding to the H face of the housing.
5. The ridge waveguide coaxial converter of claim 1, wherein the E-face of the housing is provided with at least one tuning screw.
6. The H-face output ridge waveguide coaxial converter of claim 5, wherein the tuning screw mounting hole is not in communication with the cavity.
7. The H-face output ridge waveguide coaxial converter of claim 5, wherein the at least one tuning screw is located directly above the ridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310461603.0A CN116435738A (en) | 2023-04-26 | 2023-04-26 | Ridge waveguide coaxial converter output from H face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310461603.0A CN116435738A (en) | 2023-04-26 | 2023-04-26 | Ridge waveguide coaxial converter output from H face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116435738A true CN116435738A (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310461603.0A Pending CN116435738A (en) | 2023-04-26 | 2023-04-26 | Ridge waveguide coaxial converter output from H face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116435738A (en) |
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2023
- 2023-04-26 CN CN202310461603.0A patent/CN116435738A/en active Pending
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