A Dual-Linearly-Polarized Center-Fed Quadrifilar Helix Antenna Loaded With Reverse Helices
This paper proposes a dual-linearly-polarized (DLP) center-fed quadrifilar helix antenna (CF-QHA) loaded with reverse helices. It features a small transverse area, hollow-core structure, enhanced bandwidth, high cross-polarization discrimination (XPD), and high gain. The proposed antenna comprises t...
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2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/11096590/ |
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| author | Xunting Yang Yifeng Xu Yuhang Dou Miao Zhang |
| author_facet | Xunting Yang Yifeng Xu Yuhang Dou Miao Zhang |
| author_sort | Xunting Yang |
| collection | DOAJ |
| description | This paper proposes a dual-linearly-polarized (DLP) center-fed quadrifilar helix antenna (CF-QHA) loaded with reverse helices. It features a small transverse area, hollow-core structure, enhanced bandwidth, high cross-polarization discrimination (XPD), and high gain. The proposed antenna comprises two pairs of diagonal helical arms along ±45° directions. By changing the feeding point to the center of each helical arm, the center feed mechanism is introduced first to improve the impedance matching, compared with the previous end-fed DLP-QHA. Loading reverse helices with the CF-QHA in parallel further enhances the XPD performance. In addition, each pair of diagonal helical arms employs a differential feed to ensure LP radiations and high isolation. For demonstration, a prototype is fabricated and tested. According to the measured results, the 10-dB return loss bandwidths of the proposed ±45° DLP CF-QHA respectively range over <inline-formula> <tex-math notation="LaTeX">$2.13-2.68$ </tex-math></inline-formula> GHz (22.87%) and <inline-formula> <tex-math notation="LaTeX">$2.1-2.69$ </tex-math></inline-formula> GHz (24.63%), where XPDs higher than 21 dB and isolation better than 24 dB are achieved. The DLP CF-QHA is expected to provide the industry with more design options in base station applications. |
| format | Article |
| id | doaj-art-0a32b25c28af417c9970fe54d960465e |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-0a32b25c28af417c9970fe54d960465e2025-08-20T03:58:39ZengIEEEIEEE Access2169-35362025-01-011313214613215410.1109/ACCESS.2025.359277611096590A Dual-Linearly-Polarized Center-Fed Quadrifilar Helix Antenna Loaded With Reverse HelicesXunting Yang0https://orcid.org/0009-0002-8031-3770Yifeng Xu1https://orcid.org/0009-0008-8753-1272Yuhang Dou2https://orcid.org/0000-0002-9873-2124Miao Zhang3https://orcid.org/0000-0002-4837-7443School of Electronic Science and Engineering, Xiamen University, Xiamen, Fujian, ChinaSchool of Electronic Science and Engineering, Xiamen University, Xiamen, Fujian, ChinaSchool of Electronic Science and Engineering, Xiamen University, Xiamen, Fujian, ChinaSchool of Electronic Science and Engineering, Xiamen University, Xiamen, Fujian, ChinaThis paper proposes a dual-linearly-polarized (DLP) center-fed quadrifilar helix antenna (CF-QHA) loaded with reverse helices. It features a small transverse area, hollow-core structure, enhanced bandwidth, high cross-polarization discrimination (XPD), and high gain. The proposed antenna comprises two pairs of diagonal helical arms along ±45° directions. By changing the feeding point to the center of each helical arm, the center feed mechanism is introduced first to improve the impedance matching, compared with the previous end-fed DLP-QHA. Loading reverse helices with the CF-QHA in parallel further enhances the XPD performance. In addition, each pair of diagonal helical arms employs a differential feed to ensure LP radiations and high isolation. For demonstration, a prototype is fabricated and tested. According to the measured results, the 10-dB return loss bandwidths of the proposed ±45° DLP CF-QHA respectively range over <inline-formula> <tex-math notation="LaTeX">$2.13-2.68$ </tex-math></inline-formula> GHz (22.87%) and <inline-formula> <tex-math notation="LaTeX">$2.1-2.69$ </tex-math></inline-formula> GHz (24.63%), where XPDs higher than 21 dB and isolation better than 24 dB are achieved. The DLP CF-QHA is expected to provide the industry with more design options in base station applications.https://ieeexplore.ieee.org/document/11096590/Quadrifilar helix antennadual-linear polarizationcenter feedreverse rotation |
| spellingShingle | Xunting Yang Yifeng Xu Yuhang Dou Miao Zhang A Dual-Linearly-Polarized Center-Fed Quadrifilar Helix Antenna Loaded With Reverse Helices IEEE Access Quadrifilar helix antenna dual-linear polarization center feed reverse rotation |
| title | A Dual-Linearly-Polarized Center-Fed Quadrifilar Helix Antenna Loaded With Reverse Helices |
| title_full | A Dual-Linearly-Polarized Center-Fed Quadrifilar Helix Antenna Loaded With Reverse Helices |
| title_fullStr | A Dual-Linearly-Polarized Center-Fed Quadrifilar Helix Antenna Loaded With Reverse Helices |
| title_full_unstemmed | A Dual-Linearly-Polarized Center-Fed Quadrifilar Helix Antenna Loaded With Reverse Helices |
| title_short | A Dual-Linearly-Polarized Center-Fed Quadrifilar Helix Antenna Loaded With Reverse Helices |
| title_sort | dual linearly polarized center fed quadrifilar helix antenna loaded with reverse helices |
| topic | Quadrifilar helix antenna dual-linear polarization center feed reverse rotation |
| url | https://ieeexplore.ieee.org/document/11096590/ |
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