期刊論文
| 學年 | 114 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2026-04-22 |
| 作品名稱 | A low-profile omnidirectional circularly polarized antenna using integrated patch and CRLH loop structures |
| 作品名稱（其他語言） | |
| 著者 | Jui-Han Tai; Yu-Jen Chi; Fu-Chiarng Chen |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Scientific Reports 16, p.18805 |
| 摘要 | A low-profile omnidirectional circularly polarized antenna is proposed by integrating a patch antenna with a loop antenna. Omnidirectional vertically polarized radiation is achieved by modifying the resonant mode within the cavity of the patch antenna, whereas omnidirectional horizontally polarized radiation is realized through the incorporation of composite right/left-handed (CRLH) line segments into the loop antenna. The loop antenna is fed by a microstrip balun, and a common-mode suppression filter is inserted between the loop antenna and the balun to mitigate common-mode interference induced by the excitation of the patch antenna. An unequal Wilkinson power divider, together with transmission lines, is employed to control the power ratio and phase difference between the two antennas, thereby generating circular polarization. Simulated results demonstrate good impedance matching at the center frequency of 2.4 GHz. The axial ratio in the xy-plane remains below 3 dB, with an omnidirectionality of approximately 1 dB. Although the measured results exhibit slight degradation due to environmental effects, they are in good agreement with the simulations, thereby validating the feasibility of the proposed design. |
| 關鍵字 | |
| 語言 | en |
| ISSN | |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | GBR |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129625 ) |