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Wideband and low axial ratio circularly polarized antenna using AMC-based structure polarization rotation reflective surface

Published online by Cambridge University Press:  21 June 2018

Qiang Chen ,
Hou Zhang ,
Lu-Chun Yang ,
Xiao-Fei Zhang  and
Yi-Chao Zeng
Qiang Chen*
Affiliation:
Air-Defense and Antimissile Institute, University of Airforce Engineering, Xi'an, Shannxi P, 710051, China
Hou Zhang
Affiliation:
Air-Defense and Antimissile Institute, University of Airforce Engineering, Xi'an, Shannxi P, 710051, China
Lu-Chun Yang
Affiliation:
China Mobile (Shenzhen) Limited,Shenzhen, Guangdong Province, 518048, China
Xiao-Fei Zhang
Affiliation:
Air-Defense and Antimissile Institute, University of Airforce Engineering, Xi'an, Shannxi P, 710051, China
Yi-Chao Zeng
Affiliation:
Air-Defense and Antimissile Institute, University of Airforce Engineering, Xi'an, Shannxi P, 710051, China
*
Author for correspondence: Qiang Chen, E-mail: [email protected]
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Abstract

This paper investigates a wideband and low axial ratio circularly polarized (CP) antenna, which is composed of a monopole on a novel polarization rotating reflective surface (PRRS) based on a corner-truncated artificial magnetic conductor (AMC) structure. By adjusting the dimensions of truncated corner properly, the PRRS has two polarization rotation (PR) frequency points. Then, a large PR band of 18% (5.55–6.65 GHz) can be achieved with two adjacent PR frequency points coming together. The profile of the newly PRRS is only0.04λ0. With corner-truncated AMC-based PRRS loading, a measured impedance bandwidth of 1.8 GHz (5.4–7.2 GHz) and the 3 dB axial ratio bandwidth of 1 GHz (5.55–6.65 GHz) could be obtained by the monopole antenna and validated by measurements. The values of AR were well below 1 dB at most of the CP region, which show a perfect CP performance. Moreover, the proposed antenna has exhibited a large axial ratio beamwidth in both the xoz- and yoz-planes and a peak gain of 6.1 dBic within the operational bandwidth.

Keywords

Circularly polarizedlow ARPRRStruncated corner
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 9 , November 2018 , pp. 1058 - 1064
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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