CN115458881A - Compact rectangular waveguide-circular waveguide mode converter - Google Patents
Compact rectangular waveguide-circular waveguide mode converter Download PDFInfo
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- CN115458881A CN115458881A CN202211196944.1A CN202211196944A CN115458881A CN 115458881 A CN115458881 A CN 115458881A CN 202211196944 A CN202211196944 A CN 202211196944A CN 115458881 A CN115458881 A CN 115458881A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
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Abstract
The invention relates to a compact rectangular waveguide-circular waveguide mode converter. A compact rectangular waveguide-circular waveguide mode converter comprises a rectangular waveguide port, two-way power dividing structures 1, two folding two-way power dividing structures 2, a hollow metal cylinder, a step mode converter and a circular waveguide output port. Signals are input from rectangular waveguide and are TE-dependent 10 The two-way power division structure 1 and the two folding two-way power division structure 2 are divided into four ways and transmitted to the cross structure, and finally converted into TE by the step-type mode converter 01 And the mode is output from the circular waveguide output port. On the basis of the existing theory, a folding two-way power dividing structure is adopted, and the compact rectangular waveguide-circular waveguide mode converter is provided, has the characteristics of small size, compact structure and wide bandwidth, is easy to process, and can solve the problems that the mode converter from the rectangular waveguide to the circular waveguide in the prior art is large in structure size and narrow in bandwidth.
Description
Technical Field
The invention relates to the technical field of microwave/millimeter wave energy transmission, in particular to a compact rectangular waveguide-circular waveguide mode converter.
Background
At present, in the development of electronic systems, rectangular waveguides are widely used in electronic systems due to their characteristics of good electromagnetic shielding and low loss. The circular waveguide has the advantages of large dispersion capacity, low power, small attenuation, large size, simple processing and the like, and is very suitable for microwave millimeter wave devices. Meanwhile, due to the symmetry of the circular waveguide, compared with waveguides in other shapes, the circular waveguide can better meet the performance parameter requirements in the field of power synthesis. Therefore, to meet the needs of various microwave technology scenarios, rectangular waveguide TE 10 Mode-circular waveguide TE 01 Analog mode converters are used in large numbers.
With the rapid development of modern microwave millimeter wave wireless communication systems, requirements of various instruments and equipment on the size and bandwidth of devices are more and more strict, and the existing mode converter from rectangular waveguide to circular waveguide is generally larger in size and narrower in bandwidth, and cannot meet the use requirements under the increasing miniaturization application scenes. The compact rectangular waveguide to circular waveguide mode converter with broadband characteristics has wide application scenarios and great significance.
Disclosure of Invention
In view of the drawbacks of the background art, the present invention provides a compact rectangular waveguide-circular waveguide mode converter. The mode converter has the characteristics of small size, compact structure and wide bandwidth, is easy to process, and can solve the problems of large structural size and narrow bandwidth of the mode converter from rectangular waveguide to circular waveguide in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
as shown in fig. 1, a compact rectangular waveguide-circular waveguide mode converter includes a rectangular waveguide port (1), a two-way power division structure 1 (2), two folded two-way power division structures 2 (3), a hollow metal cylinder (4), a step mode converter (5), and a circular waveguide output port (6).
The two side walls of the two-path power dividing structure 1 are formed by symmetrically arranged step-shaped structures, and echo reduction is facilitated.
The rectangular waveguide port is connected with two folding type two-way power dividing structures 2 through a two-way common dividing structure 1, the rectangular waveguide port is output to the circular waveguide output port through a step mode converter, and the hollow metal cylinder is located in the folding type two-way power dividing structures and integrally presents a compact 90-degree corner structure.
The working principle of the compact rectangular waveguide-circular waveguide mode converter provided by the invention is as follows:
after microwave signals are input from a rectangular waveguide port (1), the signals are processed according to TE 10 The energy is divided into two by the two-way power dividing structure 1 (2) and then divided into four by the two folding two-way power dividing structure 2 (3), and the electromagnetic field of each way is according to TE 10 The two-way folding two-way power dividing structure is combined into a cross structure through a hollow metal cylinder, and an electromagnetic field is in a TE (transverse electric) shape on the horizontal section of the cross structure + 22 Mode distribution, and conversion into TE by step-type mode converter 01 And the mode is output from the circular waveguide output port (6).
The invention has the advantages and obvious effects that:
the compact rectangular waveguide-circular waveguide mode converter has the characteristics of compact structure, easiness in miniaturization and convenience in processing. Compared with the traditional structure, the structure can better adapt to the increasingly rigorous requirements of modern microwave millimeter wave wireless communication systems on the size of devices.
Compared with the existing mode converter from rectangular waveguide to circular waveguide, the compact mode converter from rectangular waveguide to circular waveguide has wider bandwidth, and can better meet the requirement of broadband developed by the current communication system. The problem that the bandwidth of a traditional mode converter from a rectangular waveguide to a circular waveguide is too narrow is solved.
The compact rectangular waveguide-circular waveguide mode converter has the advantages of compact structure, easiness in processing, wide bandwidth, good flatness and the like, can be mainly applied to various microwave millimeter wave systems, has higher application value in the components of power distributors, power synthesizers and the like, and has wide application prospect in the microwave millimeter wave systems of communication, radars, measurement and control and the like.
Drawings
FIG. 1 is a schematic diagram of a compact rectangular waveguide-circular waveguide mode converter according to the present invention;
FIG. 2 is a simulation curve of S-parameters of a compact rectangular waveguide-circular waveguide mode converter in an exemplary embodiment;
in the drawings, the reference numbers correspond to the names:
the device comprises (1) a waveguide port, (2) a two-way power dividing structure 1, (3) a folding two-way power dividing structure 2, (4) a hollow metal cylinder, (5) a step mode converter and (6) a circular waveguide output port.
Detailed Description
To make the problems, solutions, and advantages of the present invention more apparent, those skilled in the art will readily appreciate that the advantages and features of the present invention may be readily understood by those of ordinary skill in the art from the disclosure set forth herein. The present invention will be described in detail below by way of examples.
Fig. 1 shows a compact rectangular waveguide-circular waveguide mode converter proposed by the present invention. The selected operating frequency band is 40-58GHz, and the example device comprises the following structures:
a compact rectangular waveguide-circular waveguide mode converter comprises a rectangular waveguide port (1), two-way power dividing structures (1, 2), two folding two-way power dividing structures (2, 3), a hollow metal cylinder (4), a step mode converter (5) and a circular waveguide output port (6).
The rectangular waveguide port is connected with two folding type two-way power dividing structures 2 through a two-way common dividing structure 1, the rectangular waveguide port is output to the circular waveguide output port through a step mode converter, and the hollow metal cylinder is located in the folding type two-way power dividing structures and integrally presents a compact 90-degree corner structure.
After the microwave signal is input from rectangular waveguide, it is according to TE 10 The energy is divided into two by the two-way power dividing structure 1 (2) and four by the two folding two-way power dividing structure 2 (3), and the electromagnetic field of each way is according to TE 10 The two-way folding two-way power dividing structure is combined into a cross structure by a hollow metal cylinder, and an electromagnetic field is in a TE (transverse electric) shape on the horizontal section of the cross structure + 22 The mode is distributed and finally changed through a step modeConversion of converters to TEs 01 And the mode is output from the circular waveguide output port (6).
After the combination optimization, the transverse dimension is about 24mm, the longitudinal dimension is about 17mm, the visible dimension is small, and the structure is compact.
FIG. 2 shows the S-parameter simulation results of the compact rectangular waveguide-circular waveguide mode converter, which shows that the compact rectangular waveguide-circular waveguide mode converter has smaller loss in 40-58GHz, and the input return loss is better than-20 dB.
Claims (3)
1. A compact rectangular waveguide-circular waveguide mode converter is characterized by comprising a rectangular waveguide port (1), a two-way power dividing structure 1 (2), two folding two-way power dividing structures 2 (3), a hollow metal cylinder (4), a step mode converter (5) and a circular waveguide output port (6). The rectangular waveguide port is connected with the two folding type two-way power dividing structures 2 (3) through the two-way common dividing structure 1 (2), and is output to the circular waveguide output port (6) through the step mode converter (5), and the hollow metal cylinder (4) is located in the two folding type two-way power dividing structures 2 (3), so that the whole structure is a compact 90-degree corner structure.
2. A compact rectangular waveguide-circular waveguide mode converter according to claim 1, characterized by using two folded two-way power dividing structures 2 (3).
3. The compact rectangular waveguide-circular waveguide mode converter as claimed in claim 1, wherein the two folded two-way power dividing structures 2 (3) are combined into a cross structure by the hollow metal cylinder (4) to form a 90 ° corner structure distribution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211196944.1A CN115458881A (en) | 2022-09-29 | 2022-09-29 | Compact rectangular waveguide-circular waveguide mode converter |
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| CN202211196944.1A CN115458881A (en) | 2022-09-29 | 2022-09-29 | Compact rectangular waveguide-circular waveguide mode converter |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI267231B (en) * | 2005-05-25 | 2006-11-21 | Univ Tsinghua | Polarized high order mode electromagnetic wave coupler and coupling method thereof |
| US20070182507A1 (en) * | 2006-02-03 | 2007-08-09 | National Tsing Hua University | High order mode electromagnetic wave coupler and coupling method using proportional distributing waves |
| US7385462B1 (en) * | 2005-03-18 | 2008-06-10 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Wideband radial power combiner/divider fed by a mode transducer |
| CN106992337A (en) * | 2017-04-19 | 2017-07-28 | 桂林电子科技大学 | A kind of Ka wave bands circular waveguide TE01 mode exciters |
| CN108011159A (en) * | 2017-11-09 | 2018-05-08 | 电子科技大学 | A kind of rectangular waveguide TE10Mould-circular waveguide TE01Mode converter |
| CN110752422A (en) * | 2019-10-21 | 2020-02-04 | 电子科技大学 | Compact high-purity circular waveguide TE02Mode exciter |
| CN111969288A (en) * | 2020-07-09 | 2020-11-20 | 电子科技大学 | Oblique multipath synthesis gyrotron traveling wave tube TE02Mode input coupler |
-
2022
- 2022-09-29 CN CN202211196944.1A patent/CN115458881A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7385462B1 (en) * | 2005-03-18 | 2008-06-10 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Wideband radial power combiner/divider fed by a mode transducer |
| TWI267231B (en) * | 2005-05-25 | 2006-11-21 | Univ Tsinghua | Polarized high order mode electromagnetic wave coupler and coupling method thereof |
| US20070182507A1 (en) * | 2006-02-03 | 2007-08-09 | National Tsing Hua University | High order mode electromagnetic wave coupler and coupling method using proportional distributing waves |
| CN106992337A (en) * | 2017-04-19 | 2017-07-28 | 桂林电子科技大学 | A kind of Ka wave bands circular waveguide TE01 mode exciters |
| CN108011159A (en) * | 2017-11-09 | 2018-05-08 | 电子科技大学 | A kind of rectangular waveguide TE10Mould-circular waveguide TE01Mode converter |
| CN110752422A (en) * | 2019-10-21 | 2020-02-04 | 电子科技大学 | Compact high-purity circular waveguide TE02Mode exciter |
| CN111969288A (en) * | 2020-07-09 | 2020-11-20 | 电子科技大学 | Oblique multipath synthesis gyrotron traveling wave tube TE02Mode input coupler |
Non-Patent Citations (5)
| Title |
|---|
| KAIJUN SONG等: "Four-way Chained Quasi-Planar Power Divider Using Rectangular Coaxial Waveguide", 《 IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》, vol. 25, no. 6, pages 373 - 375, XP011583243, DOI: 10.1109/LMWC.2015.2421294 * |
| SHITOU LIU，PENG ZHAO: "12 G to 20 G compact rectangle waveguide to circular waveguide mode convertor", 《2014 15TH INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY》 * |
| 崔新红: "新型高功率微波圆波导模式转换器设计方法的研究", 《中国博士学位论文全文数据库（电子期刊）信息科技辑》 * |
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| 金磊: "宽带圆波导TM01模式激励器研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
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Application publication date: 20221209 |