Design and Implementation of C-Band Large-Power Planar Butler Matrix in SRS
In satellite remote sensing (SRS), there is a demand for large-power microwave components. A Butler matrix is essential to a transmitting antenna array in SRS. This article illustrates the electrical and mechanical design, simulation, and test results of a large-power planar beamforming network for...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/24/7/2132 |
| _version_ | 1827286565262458880 |
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| author | Jinfeng Li Liping Yan Changjun Liu He Bai Wanzhao Cui |
| author_facet | Jinfeng Li Liping Yan Changjun Liu He Bai Wanzhao Cui |
| author_sort | Jinfeng Li |
| collection | DOAJ |
| description | In satellite remote sensing (SRS), there is a demand for large-power microwave components. A Butler matrix is essential to a transmitting antenna array in SRS. This article illustrates the electrical and mechanical design, simulation, and test results of a large-power planar beamforming network for SRS at C-band. It is a 4 × 4 Butler matrix based on square coaxial lines. Short-ended stubs are used in the Butler matrix to broaden its bandwidth by 10%, support inner conductors, and enhance heat transfer in vacuum environments. The simulation results are consistent with the measured results. The reflection coefficient is less than −18 dB, and the isolation is more than 23 dB from 3.8 GHz to 4.2 GHz. The insertion losses are less than 0.6 dB, and the phase errors are better than ±6°. The measured peak microwave power of the proposed Butler matrix is 9 kW. Its size is 440 × 400 × 40 mm<sup>3</sup>. The proposed Butler matrix beamforming network can be applied to SRS systems. |
| first_indexed | 2024-04-24T10:34:34Z |
| format | Article |
| id | doaj.art-5c6fe5f2c1f549e796a3b4d368b243ef |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-24T10:34:34Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5c6fe5f2c1f549e796a3b4d368b243ef2024-04-12T13:26:17ZengMDPI AGSensors1424-82202024-03-01247213210.3390/s24072132Design and Implementation of C-Band Large-Power Planar Butler Matrix in SRSJinfeng Li0Liping Yan1Changjun Liu2He Bai3Wanzhao Cui4The School of Electronics and Information, Sichuan University, Chengdu 610064, ChinaThe School of Electronics and Information, Sichuan University, Chengdu 610064, ChinaThe School of Electronics and Information, Sichuan University, Chengdu 610064, ChinaNational Key Laboratory of Science and Technology on Space Microwave, China Academy of Space Technology, Xi’an 710049, ChinaNational Key Laboratory of Science and Technology on Space Microwave, China Academy of Space Technology, Xi’an 710049, ChinaIn satellite remote sensing (SRS), there is a demand for large-power microwave components. A Butler matrix is essential to a transmitting antenna array in SRS. This article illustrates the electrical and mechanical design, simulation, and test results of a large-power planar beamforming network for SRS at C-band. It is a 4 × 4 Butler matrix based on square coaxial lines. Short-ended stubs are used in the Butler matrix to broaden its bandwidth by 10%, support inner conductors, and enhance heat transfer in vacuum environments. The simulation results are consistent with the measured results. The reflection coefficient is less than −18 dB, and the isolation is more than 23 dB from 3.8 GHz to 4.2 GHz. The insertion losses are less than 0.6 dB, and the phase errors are better than ±6°. The measured peak microwave power of the proposed Butler matrix is 9 kW. Its size is 440 × 400 × 40 mm<sup>3</sup>. The proposed Butler matrix beamforming network can be applied to SRS systems.https://www.mdpi.com/1424-8220/24/7/2132Butler matrixmultipactorpower thresholdshort-ended stubssquare coaxial line |
| spellingShingle | Jinfeng Li Liping Yan Changjun Liu He Bai Wanzhao Cui Design and Implementation of C-Band Large-Power Planar Butler Matrix in SRS Sensors Butler matrix multipactor power threshold short-ended stubs square coaxial line |
| title | Design and Implementation of C-Band Large-Power Planar Butler Matrix in SRS |
| title_full | Design and Implementation of C-Band Large-Power Planar Butler Matrix in SRS |
| title_fullStr | Design and Implementation of C-Band Large-Power Planar Butler Matrix in SRS |
| title_full_unstemmed | Design and Implementation of C-Band Large-Power Planar Butler Matrix in SRS |
| title_short | Design and Implementation of C-Band Large-Power Planar Butler Matrix in SRS |
| title_sort | design and implementation of c band large power planar butler matrix in srs |
| topic | Butler matrix multipactor power threshold short-ended stubs square coaxial line |
| url | https://www.mdpi.com/1424-8220/24/7/2132 |
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