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Title: Design of Circularly Polarized Annular-Ring Slot Antennas Fed by a Double-Bent Microstripline
Authors: Sze, Jia-Yi;Hsu, Chung-I G.;Ho, Min-Hua;Ou, Yu-He;Wu, Ming-Ting
Contributors: 電子工程學系
Date: 2007-11
Issue Date: 2012-05-22T06:26:32Z
Publisher: IEEE
Abstract: A novel design of a circularly polarized annular-ring slot antenna is discussed. The circular polarization is attained through a newly proposed double-bent microstripline that feeds the antenna at two different positions. Several structural parameters were experimentally studied with care to establish a design procedure, which was subsequently drawn into a design flow chart. Validation was carried out using the antennas designed at 3.5 and 1.59 GHz. The measured 3-dB axial-ratio bandwidth (ARBW) for the former is 10.5% and for the latter, 10.0%, which is larger than the 8.5% 3-dB ARBW required by an Inmarsat application.
Relation: IEEE Trans. Antennas and Propagat., 55(11): 3134-3139
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