文章基本信息

标题：Improved Directivity of an OAM Antenna by a Fabry-Perot Cavity: An Experimental Study
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作者：Wenlong Wei ; Wenlin Kuai ; Kourosh Mahdjoubi 等
期刊名称：Open Journal of Antennas and Propagation
印刷版ISSN：2329-8421
电子版ISSN：2329-8413
出版年度：2021
卷号：9
期号：4
页码：65-73
DOI：10.4236/ojapr.2021.94006
语种：English
出版社：Scientific Research Publishing
摘要：The circular phased antenna array is commonly used for generating waves bearing Orbital Angular Momentum (OAM) in the radio frequency band, but it achieves a relatively low directivity. To overcome this drawback, we present here a method to improve the directivity of an OAM circular phased antenna array by embedding it inside a Fabry-Perot cavity. The Fabry-Perot cavity contains three main parts: a partially reflecting surface (PRS), an air cavity and a ground plane. Simulation data show that the directivity of this new OAM antenna achieves an improvement of 8.2 dB over the original array. A prototype is realized and characterized. The simulated and measured characteristics are in good agreement.
关键词：Circular Antenna Array;Fabry-Perot Cavity;Orbital Angular Momentum;Patch Antenna;Phase Shifter