https://scholars.lib.ntu.edu.tw/handle/123456789/640576
標題: | Low-cost Reflective Metasurface with Rotatable Unit Elements for 5G mmW Signal Enhancement | 作者: | Lin, Da Yang HSI-TSENG CHOU Liao, Wen Jiao Chen, Nan Wei |
關鍵字: | Broadband | metasurface | microstrip element | phase delay line | reflectarray | 公開日期: | 1-一月-2023 | 來源出版物: | 2023 IEEE International Symposium on Antennas and Propagation, ISAP 2023 | 摘要: | A novel Ka-band radio frequency reflectarray is proposed to refocus the radiation fields from antennas in the near- and far zones of the reflectarray at the Ka frequency band. The forming unit-cell structure consists of two double-layered and single-layered boards. The required phase shifts are produced by circularly rotating the phase delay lines on the single-layered board with a z-shaped pattern, which makes it easy for mass production. To demonstrate the reflectarray behavior, a 21x21 reflectarray antenna operating at 28 GHz is designed. By properly arranging the array elements, the cross-polarization is reduced. The simulated results show 4% 1 dB and 7% 3 dB gain bandwidths. The maximum gain at 28 GHz is 25.6 dB, and the aperture efficiency is approximately 37.8%. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/640576 | ISBN: | 9798350341140 | DOI: | 10.1109/ISAP57493.2023.10388888 |
顯示於: | 電機工程學系 |
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