DesignonBi-DirectionalCircularlyPolarizedMicrostrip-汉斯出版社.PDF

Journal of Antennas 天线学报, 2014, 3, 9-14 Published Online June 2014 in Hans. /journal/ja /10.12677/ja.2014.32002 Design on Bi-Directional Circularly Polarized Microstrip Antenna for Mobile Communication Wei Liu, Min Wang, Wen Wu School of Electronics and Optical Engineering, Nanjing University of Science and Technology, Nanjing Email: wangmin@ th th st Received: Apr. 28 , 2014; revised: May 26 , 2014; accepted: Jun. 1 , 2014 Copyright © 2014 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Abstract A bi-directional and circularly polarized microstrip patch antenna is proposed for applications in the long corridor environment. This antenna consists of two substrate layers, in which binary- element patch array is at the bottom and parasitic binary element array is on top layer. It is cen- ter-fed from the bottom layer. Firstly, the circular polarization is achieved by means of truncating corners. Secondly, the bi-direction pattern is realized with the nearly symmetrical current distri- bution. A bi-directional radiation pattern has been achieved at the center-frequency of 1.9 GHz. The relative impedance bandwidth is about 8.2%, while the axial ratio bandwidth is about 2.1% at maximum radiation direction. The gain is about 5.7 dBi. Keywords Microstrip Patch Antenna, Bi-Directional Radiation, Circularly Polarization 移动通信中的双向圆极化微带天线的设计 刘 巍，汪 敏，吴 文 南京理工大学电子工程与光电技术学院，南京 Email: wangmin@ 收稿日期：2014年4月28 日；修回日期：2014年5月26 日；录用日期：2014年6月1 日 9 移动通信中的双向圆极化微带天线的设计 摘 要 本文设计了一种适用于狭长空间环境的双向圆极化微带天线。天线为双层结构的二元