Wideband, Dual-Polarized Patch Antenna Array Fed by Novel, Differentially Fed Structure
In this article, a 1 × 4 wideband, dual-polarized patch antenna array fed by a novel, differentially fed structure is proposed. The differentially fed structure of the antenna was realized by a parallel line structure that was printed on a PCB and connected with the inner and outer conductors of a c...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-04-01
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| Series: | Electronics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-9292/13/7/1382 |
| _version_ | 1797212734925832192 |
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| author | Naiming Ou Xian Wu Kaijiang Xu Fukun Sun Tongfei Yu Yuchen Luan |
| author_facet | Naiming Ou Xian Wu Kaijiang Xu Fukun Sun Tongfei Yu Yuchen Luan |
| author_sort | Naiming Ou |
| collection | DOAJ |
| description | In this article, a 1 × 4 wideband, dual-polarized patch antenna array fed by a novel, differentially fed structure is proposed. The differentially fed structure of the antenna was realized by a parallel line structure that was printed on a PCB and connected with the inner and outer conductors of a coaxial cable. This method elaborately solved the problem of the narrow bandwidth of conventional microstrip differential feeding. By using a relatively thick air substrate (thickness = 0.19 λ<sub>0</sub>), stacked patches, a coupling feeding structure, and a differential feeding structure with the novel design, the element of the patch antenna array introduced below operated from 0.415 GHz to 0.707 GHz (achieving the 52.0% bandwidth) with a VSWR < 2.0, yielding a high port isolation less than −28 dB. For the array, an active VSWR less than 2.0 was also obtained with a port isolation of less than −25 dB, ranging from 0.405 GHz to 0.696 GHz. In the desired bandwidth, the array had an azimuth 3 dB beamwidth of about 19° for both horizontal polarization and vertical polarization. The antenna array also had good performance in scanning (stable gain and 3 dB beamwidth) and circular polarization (a 3 dB axial ratio bandwidth better than 54.5%). |
| first_indexed | 2024-04-24T10:47:06Z |
| format | Article |
| id | doaj.art-d2dcb66c69dc4726b1f8f79d8cddfe9d |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-04-24T10:47:06Z |
| publishDate | 2024-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-d2dcb66c69dc4726b1f8f79d8cddfe9d2024-04-12T13:17:32ZengMDPI AGElectronics2079-92922024-04-01137138210.3390/electronics13071382Wideband, Dual-Polarized Patch Antenna Array Fed by Novel, Differentially Fed StructureNaiming Ou0Xian Wu1Kaijiang Xu2Fukun Sun3Tongfei Yu4Yuchen Luan5Department of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaDepartment of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaDepartment of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaDepartment of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaDepartment of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaNational Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaIn this article, a 1 × 4 wideband, dual-polarized patch antenna array fed by a novel, differentially fed structure is proposed. The differentially fed structure of the antenna was realized by a parallel line structure that was printed on a PCB and connected with the inner and outer conductors of a coaxial cable. This method elaborately solved the problem of the narrow bandwidth of conventional microstrip differential feeding. By using a relatively thick air substrate (thickness = 0.19 λ<sub>0</sub>), stacked patches, a coupling feeding structure, and a differential feeding structure with the novel design, the element of the patch antenna array introduced below operated from 0.415 GHz to 0.707 GHz (achieving the 52.0% bandwidth) with a VSWR < 2.0, yielding a high port isolation less than −28 dB. For the array, an active VSWR less than 2.0 was also obtained with a port isolation of less than −25 dB, ranging from 0.405 GHz to 0.696 GHz. In the desired bandwidth, the array had an azimuth 3 dB beamwidth of about 19° for both horizontal polarization and vertical polarization. The antenna array also had good performance in scanning (stable gain and 3 dB beamwidth) and circular polarization (a 3 dB axial ratio bandwidth better than 54.5%).https://www.mdpi.com/2079-9292/13/7/1382patch antennadifferentially fedwidebanddual polarizedlow cross-polarizationcircular polarization |
| spellingShingle | Naiming Ou Xian Wu Kaijiang Xu Fukun Sun Tongfei Yu Yuchen Luan Wideband, Dual-Polarized Patch Antenna Array Fed by Novel, Differentially Fed Structure Electronics patch antenna differentially fed wideband dual polarized low cross-polarization circular polarization |
| title | Wideband, Dual-Polarized Patch Antenna Array Fed by Novel, Differentially Fed Structure |
| title_full | Wideband, Dual-Polarized Patch Antenna Array Fed by Novel, Differentially Fed Structure |
| title_fullStr | Wideband, Dual-Polarized Patch Antenna Array Fed by Novel, Differentially Fed Structure |
| title_full_unstemmed | Wideband, Dual-Polarized Patch Antenna Array Fed by Novel, Differentially Fed Structure |
| title_short | Wideband, Dual-Polarized Patch Antenna Array Fed by Novel, Differentially Fed Structure |
| title_sort | wideband dual polarized patch antenna array fed by novel differentially fed structure |
| topic | patch antenna differentially fed wideband dual polarized low cross-polarization circular polarization |
| url | https://www.mdpi.com/2079-9292/13/7/1382 |
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