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Inverted-L microstrip open slot antenna with wideband circularly polarization for Wimax application

Published online by Cambridge University Press:  10 April 2018

Cheng-Zhong Lv  and
Lu-Chun Yang
Cheng-Zhong Lv*
Affiliation:
School of Air and Missile Defense, Air Force Engineering University, Xi'an, 710051, China
Lu-Chun Yang
Affiliation:
China Mobile (Shenzhen) Limited, Shenzhen, Guangdong Province, China, 518048, China
*
Author for correspondence: Cheng-Zhong Lv, E-mail: 1101596177@qq.com
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Abstract

A novel wideband circularly polarized printed antenna is proposed in this paper. It consists of asymmetrical ground and monofilar spiral stubs connecting to it. By employing an inverted L-shaped microstrip feedline to excite the slit etched in the ground and spiral stubs, a wideband culalry polarized performance of the proposed antenna is realized. After optimization, the measured results of the final structure demonstrate that a 10 dB bandwidth of 76.2% from 2.6 to 5.8 GHz and a 3 dB axial-ratio bandwidth for circular polarization of 72.9% from 2.7 to 5.8 GHz could be achieved which could completely cover the Wimax (3.3–3.8 GHz) band.

Keywords

Antenna designmodeling and measurementscomputer-aided design
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 4 , May 2018 , pp. 497 - 504
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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