CN215771497U - Microwave broadband cavity coupler - Google Patents
Microwave broadband cavity coupler Download PDFInfo
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- CN215771497U CN215771497U CN202121390132.1U CN202121390132U CN215771497U CN 215771497 U CN215771497 U CN 215771497U CN 202121390132 U CN202121390132 U CN 202121390132U CN 215771497 U CN215771497 U CN 215771497U
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Abstract
The utility model provides a microwave broadband cavity coupler which comprises a shell, a cover plate, a coupling inner conductor, a transmission inner conductor, a first input connector, a second input connector, a first output connector and a second output connector, wherein a cavity is formed between the shell and the cover plate, and the coupling inner conductor and the transmission inner conductor are arranged in the cavity; the input end of the coupling inner conductor is connected with the first input connector, and the output end of the coupling inner conductor is connected with the first output connector; the input end of the transmission inner conductor is connected with the second input connector, and the output end of the transmission inner conductor is connected with the second output connector; and the coupling inner conductor adopts a continuous gradient structure. The microwave broadband cavity coupler has the advantages that the coupling inner conductor is of a continuous gradient structure, the working frequency band of the coupler is widened, the bearing power is high, the bidirectional coupling can be realized, the size of the coupler is reduced, and the microwave broadband cavity coupler is convenient to install and use.
Description
Technical Field
The utility model belongs to the technical field of communication, and particularly relates to a microwave broadband cavity coupler.
Background
In modern communication and microwave systems, directional couplers are widely used, which divide one input signal into multiple outputs, distribute signal energy, and realize functions of power monitoring or power regulation of communication systems, and are important components of many microwave systems.
With the development of a communication system towards multi-system integration, multiple functions, small volume, light weight and the like, the system has higher and higher requirements on performance indexes of the coupler, and the coupler is required to have wider and smaller working bandwidth and smaller size.
The traditional broadband coupler adopts a multi-section coupling line design, the required number of sections is increased along with the increasing and wider working bandwidth, the size of the device is increased, and the mode cannot meet the requirement of high-requirement application.
In view of the above problems, there is a need for a microwave broadband cavity coupler with a reasonable design and capable of effectively improving the above problems.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to at least one of the technical problems of the prior art, and provides a microwave broadband cavity coupler.
The utility model provides a microwave broadband cavity coupler, which comprises a shell, a cover plate, a coupling inner conductor, a transmission inner conductor, a first input joint, a second input joint, a first output joint and a second output joint,
a cavity is formed between the shell and the cover plate, and the coupling inner conductor and the transmission inner conductor are arranged in the cavity;
the input end of the coupling inner conductor is connected with the first input connector, and the output end of the coupling inner conductor is connected with the first output connector;
the input end of the transmission inner conductor is connected with the second input connector, and the output end of the transmission inner conductor is connected with the second output connector; and the coupling inner conductor adopts a continuous gradient structure.
Optionally, the coupling inner conductor includes a first coupling portion and a first input connection portion bent and extended from a first end of the first coupling portion toward the first input connector; the cross-sectional dimension of the first coupling part gradually decreases from the first end to the second end thereof.
Optionally, one end of the first coupling portion facing the second input connector is provided with a plurality of first protrusions.
Optionally, the transmission inner conductor includes a second coupling portion and a second input connection portion extending from the first end of the second coupling portion toward the second input connector, and a plurality of second protrusions are disposed at one end of the second coupling portion toward the second input connector.
Optionally, the plurality of first protrusions are continuously arranged or arranged at intervals along the length direction of the first coupling part; and/or the plurality of second protrusions are arranged continuously or at intervals along the length direction of the second coupling part.
Optionally, the plurality of first protrusions are disposed on a side of the coupling inner conductor departing from the transmission inner conductor, and the plurality of second protrusions are disposed on a side of the transmission inner conductor departing from the coupling inner conductor.
Optionally, the height of the first bump is 1/6-1/3 of the width of the coupling inner conductor; and/or the height of the second bulge is 1/6-1/3 of the width of the transmission inner conductor.
Optionally, the total length of the first protrusions is 1/6-1/3 of the wavelength of the working center frequency of the broadband microwave cavity coupler.
Optionally, the total length of the second protrusions is 1/6-1/3 of the wavelength of the working center frequency of the broadband microwave cavity coupler.
Optionally, the protrusions are saw-toothed protrusions.
The utility model discloses a microwave broadband cavity coupler, which comprises a shell, a cover plate, a coupling inner conductor, a transmission inner conductor, a first input joint, a second input joint, a first output joint and a second output joint, wherein a cavity is formed between the shell and the cover plate, and the coupling inner conductor and the transmission inner conductor are arranged in the cavity; the input end of the coupling inner conductor is connected with the first input connector, and the output end of the coupling inner conductor is connected with the first output connector; the input end of the transmission inner conductor is connected with the second input connector, and the output end of the transmission inner conductor is connected with the second output connector; and the coupling inner conductor adopts a continuous gradient structure. The microwave broadband cavity coupler has the advantages that the coupling inner conductor is of a continuous gradient structure, the working frequency band of the coupler is widened, the bearing power is high, the bidirectional coupling can be realized, the size of the coupler is reduced, and the microwave broadband cavity coupler is convenient to install and use.
Drawings
Fig. 1 is a schematic structural diagram of a microwave broadband cavity coupler according to an embodiment of the present invention;
fig. 2 is a schematic diagram of coupling indexes of a microwave broadband cavity coupler according to another embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the present invention provides a microwave broadband cavity coupler 100, which includes a housing 110, a cover plate 120, a coupling inner conductor 130, a transmission inner conductor 140, a first input connector 150, a second input connector 160, a first output connector 170, and a second output connector 180, wherein a cavity 190 is formed between the housing 110 and the cover plate 120, and the coupling inner conductor 130 and the transmission inner conductor 140 are disposed in the cavity 190; the input end of the coupling inner conductor 130 is connected to the first input connector 150, and the output end of the coupling inner conductor 130 is connected to the first output connector 170; the input end of the transmission inner conductor 140 is connected with the second input connector 160, and the output end of the transmission inner conductor 140 is connected with the second output connector 180; and is
The coupling inner conductor 130 adopts a continuously tapered structure.
It should be noted that the first input terminal 150 and the first output terminal 170 are disposed on a first sidewall of the microwave broadband cavity coupler 100, the second input terminal 160 is disposed on a second sidewall of the microwave broadband cavity coupler 100, and the second output terminal 180 is disposed on a third sidewall of the microwave broadband cavity coupler 100, wherein the second sidewall and the third sidewall are disposed opposite to each other.
The microwave broadband cavity coupler has the advantages that the coupling inner conductor is of a continuous gradual change structure, the working frequency band of the coupler is widened, the size of the coupler is reduced, and the microwave broadband cavity coupler is convenient to install and use. In this embodiment, as shown in fig. 2, the coupling inner conductor is configured as a continuously graded structure, so that the coupler has better indexes in the broadband range of 700-6000 MHz.
Illustratively, as shown in fig. 1, the coupling inner conductor 130 includes a first coupling portion 131 and a first input connection portion 132 formed by bending and extending from a first end of the first coupling portion 131 toward the first input connector 150, that is, an angle is formed between the first coupling portion 131 and the first input connection portion 132; the cross-sectional dimension of the first coupling portion 131 gradually decreases from the first end to the second end thereof, that is, the cross-sectional dimension of the first coupling portion 131 gradually decreases, that is, the first coupling portion 131 is provided with a continuous gradient structure, and the gradient trend of the dimension is determined according to actual signal parameters. The multi-section stripline coupler effectively expands the bandwidth, when the section number of the multi-section coupled line tends to be infinite and becomes a continuously gradually changed coupled line, wider bandwidth can be realized, and the bandwidth theoretically has no upper frequency limit. In this embodiment, the coupling inner conductor is configured as a continuous gradient structure, so that the purpose of broadband operation is achieved, and the size of the coupler is reduced.
Illustratively, as shown in fig. 1, one end of the first coupling portion 131 facing the second input connector 160 is provided with a plurality of first protrusions 131a, and the plurality of first protrusions 131a are more preferably saw-toothed protrusions. Note that a plurality of first protrusions 131a are provided at the strong coupling corresponding portions of the coupling inner conductor 130. In this embodiment, the strong coupling corresponding portion of the coupling inner conductor is provided with a plurality of first saw-tooth protrusions, so as to achieve the purpose of improving the coupling flatness of the coupler.
For example, as shown in fig. 1, the transmission inner conductor 140 includes a second coupling portion 141 and a second input connection portion 142 formed by extending from a first end of the second coupling portion 141 toward the second input terminal 160, that is, the second input connection portion 142 is a straight strip; the second coupling portion 141 is provided with a plurality of second protrusions 141a toward one end of the second input terminal 160, and the plurality of second protrusions 141a are more preferably saw-toothed protrusions. It should be noted that a plurality of second protrusions 141a are disposed at the strong coupling corresponding portions of the transmission inner conductor 140. In this embodiment, the strong coupling corresponding portion of the transmission inner conductor is provided with a plurality of second saw-tooth protrusions, so as to achieve the purpose of improving the coupling flatness of the coupler.
Illustratively, as shown in fig. 1, a plurality of first protrusions 131a are continuously disposed or spaced apart along a length direction of the first coupling part 131; and/or, the plurality of second protrusions 141a are disposed continuously or at intervals along the length direction of the second coupling part 141. That is, the plurality of first protrusions 131a may be continuously disposed or spaced apart along the longitudinal direction of the first coupling portion 131, the plurality of second protrusions 141a may be continuously disposed or spaced apart along the longitudinal direction of the second coupling portion 141, and the plurality of second protrusions 141a may be continuously disposed or spaced apart along the longitudinal direction of the second coupling portion 141.
It should be noted that the plurality of first protrusions 131a may be continuously disposed, or may be disposed at equal intervals or unequal intervals, which is not specifically limited in this embodiment, and the plurality of second protrusions 141a may be continuously disposed, or may be disposed at equal intervals or unequal intervals, which is not specifically limited in this embodiment, and is selected according to actual requirements.
Illustratively, as shown in fig. 1, a plurality of first protrusions 131a are disposed on a side of the coupling inner conductor 130 facing away from the transmission inner conductor 140, and a plurality of second protrusions 141a are disposed on a side of the transmission inner conductor 140 facing away from the coupling inner conductor 130.
Illustratively, as shown in fig. 1, the height of the first protrusion 131a is 1/6-1/3 of the width of the coupling inner conductor 130, and in this embodiment, the height of the first protrusion 131a is further preferably 1/4 of the width of the coupling inner conductor 130; the height of the second protrusion 141a is 1/6-1/3 of the width of the transmission inner conductor 140, and in the present embodiment, the height of the second protrusion 141a is further preferably 1/4 of the width of the transmission inner conductor 140.
Illustratively, the total length of the first protrusions 131a is 1/6-1/3 of the operating center frequency wavelength of the broadband microwave cavity coupler 100, and in this embodiment, the total length of the first protrusions 131a is preferably 1/4 of the operating center frequency wavelength of the broadband microwave cavity coupler 100; the total length of the second protrusions 141a is 1/6-1/3 of the operating center frequency wavelength of the broadband microwave cavity coupler 100, and in this embodiment, the total length of the second protrusions 141a is further preferably 1/4 of the operating center frequency wavelength of the broadband microwave cavity coupler 100. As shown in FIG. 2, the sawtooth-shaped protrusions enable the coupling fluctuation of the designed 40dB coupler within the whole working frequency band to be < + -. 0.5dB, and good performance is achieved.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the utility model, and these modifications and improvements are also considered to be within the scope of the utility model.
Claims (10)
1. A microwave broadband cavity coupler is characterized by comprising a shell, a cover plate, a coupling inner conductor, a transmission inner conductor, a first input joint, a second input joint, a first output joint and a second output joint,
a cavity is formed between the shell and the cover plate, and the coupling inner conductor and the transmission inner conductor are arranged in the cavity;
the input end of the coupling inner conductor is connected with the first input connector, and the output end of the coupling inner conductor is connected with the first output connector;
the input end of the transmission inner conductor is connected with the second input connector, and the output end of the transmission inner conductor is connected with the second output connector; and the number of the first and second electrodes,
the coupling inner conductor adopts a continuous gradient structure.
2. The broadband microwave cavity coupler of claim 1, wherein the coupling inner conductor comprises a first coupling portion and a first input connection portion bent and extended from a first end of the first coupling portion toward the first input connector;
the cross-sectional dimension of the first coupling part gradually decreases from the first end to the second end thereof.
3. The broadband microwave cavity coupler of claim 2, wherein the first coupling portion has a plurality of first protrusions disposed at an end facing the second input connector.
4. The broadband microwave cavity coupler of claim 3, wherein the inner transmission conductor comprises a second coupling portion and a second input connection portion extending from a first end of the second coupling portion toward the second input connector, and a plurality of second protrusions are disposed at an end of the second coupling portion toward the second input connector.
5. The broadband microwave cavity coupler of claim 4, wherein the first protrusions are disposed continuously or at intervals along a length direction of the first coupling portion; and/or the presence of a gas in the gas,
the plurality of second protrusions are continuously arranged or arranged at intervals along the length direction of the second coupling part.
6. The microwave broadband cavity coupler according to claim 3 or 4, wherein the plurality of first protrusions are disposed on a side of the coupling inner conductor facing away from the transmission inner conductor;
the plurality of second bulges are arranged on one side of the transmission inner conductor, which is far away from the coupling inner conductor.
7. The broadband microwave cavity coupler of claim 6, wherein the height of the first protrusion is 1/6-1/3 of the width of the coupling inner conductor; and/or the presence of a gas in the gas,
the height of the second protrusion is 1/6-1/3 of the width of the transmission inner conductor.
8. The broadband microwave cavity coupler of claim 7, wherein the total length of the first protrusions is 1/6-1/3 of the wavelength of the working center frequency of the broadband microwave cavity coupler.
9. The broadband microwave cavity coupler of claim 8, wherein a total length of the second protrusions is 1/6-1/3 of a wavelength of an operating center frequency of the broadband microwave cavity coupler.
10. The broadband microwave cavity coupler of claim 9, wherein the protrusions are saw-tooth shaped protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121390132.1U CN215771497U (en) | 2021-06-22 | 2021-06-22 | Microwave broadband cavity coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121390132.1U CN215771497U (en) | 2021-06-22 | 2021-06-22 | Microwave broadband cavity coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215771497U true CN215771497U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121390132.1U Active CN215771497U (en) | 2021-06-22 | 2021-06-22 | Microwave broadband cavity coupler |
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| CN (1) | CN215771497U (en) |
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2021
- 2021-06-22 CN CN202121390132.1U patent/CN215771497U/en active Active
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