https://scholars.lib.ntu.edu.tw/handle/123456789/632503
標題: | Beamwidth Control for Directive Antennas using RF Lens | 作者: | Liao W.-J HSI-TSENG CHOU Hou Y.-C. |
公開日期: | 2006 | 起(迄)頁: | 3369-3372 | 來源出版物: | IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) | 摘要: | Broadband antennas such as horn and spirals are suitable for testing range references, direction-of-arrival estimation and other UWB applications. However, one problem with most broadband antennas is the frequency dependency of the antenna beamwidth as well as antenna gain. In this work, a beamwidth compensation measure is proposed by adding an RF lens in front of the broadband antenna. By adjusting the curvature profile, the RF lens can be made to reduce the antenna beamwidth. Simulation results show that the main beam becomes more compact after adding a spherical RF lens. Experiment results show that by adding an elongated bullet-shaped RF lens, the antenna patterns can be drastically reduced and hence improve the antenna directivity. © 2006 IEEE |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907869119&doi=10.1109%2fAPS.2006.1711336&partnerID=40&md5=e5b620006ac286f68b02dceca186a42c https://scholars.lib.ntu.edu.tw/handle/123456789/632503 |
ISSN: | 15223965 | DOI: | 10.1109/APS.2006.1711336 | SDG/關鍵字: | Horn antennas; Lens antennas; Spiral antennas; Ultra-wideband (UWB); Antenna beamwidth; Antenna gains; Beam widths; Beamwidth control; Broad-band antenna; Compensation measures; Direction of arrival estimation; Frequency dependencies; Testing range; UWB applications; Directional patterns (antenna) |
顯示於: | 電機工程學系 |
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