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Dual-layered polarization and frequency reconfigurable microstrip antenna by rotating breach-truncated circular radiator

Published online by Cambridge University Press:  23 March 2017

Haixiong Li ,
Yunlong Gong ,
Jiakai Zhang ,
Jun Ding  and
Chenjiang Guo
Haixiong Li*
Affiliation:
School of Electronics and Information, Northwestern Polytechnical University, Youyi Road (West), Beilin, Xi'an City, China
Yunlong Gong
Affiliation:
School of Electronics and Information, Northwestern Polytechnical University, Youyi Road (West), Beilin, Xi'an City, China
Jiakai Zhang
Affiliation:
School of Electronics and Information, Northwestern Polytechnical University, Youyi Road (West), Beilin, Xi'an City, China
Jun Ding
Affiliation:
School of Electronics and Information, Northwestern Polytechnical University, Youyi Road (West), Beilin, Xi'an City, China
Chenjiang Guo
Affiliation:
School of Electronics and Information, Northwestern Polytechnical University, Youyi Road (West), Beilin, Xi'an City, China
*
Corresponding author: H. Li Email: lihaixiong_02@163.com
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Abstract

In this study, a dual-layered polarization and frequency reconfigurable microstrip antenna is proposed based on sequential mechanical axial rotation of the circular metal radiator. The antenna can be reconfigured among three different polarized modes, including the linear polarization (LP), left-handed circular polarization and right-handed circular polarization in the band from 4.68 to 4.80 GHz (2.53%). The resonance frequency of the proposed antenna with the same LP mode could also be tuned in the range from 4.70 to 5.03 GHz by mechanical rotation of the breach-truncated circular metal radiator as well as the circular substrate. Furthermore, the polarization characteristic and frequency can be reconfigured, respectively, as the circular radiator is taken an axial rotation with an angle of 360°. The presented antenna in the four different states has been numerically simulated and fabricated for the experimental measurement, the investigated characteristics includes the port reflection coefficient, axial ratio, radiation pattern, gain, and the radiation efficiency. The simulated and test results agreed well with each other. This antenna enriches the novel mechanical reconfigurable method except for the popular electrical approach.

Keywords

Antennas and propagation for wireless systemsAntenna designModelling and measurements
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Special Issue 8: Biomedical Applications of RF/Microwave and Optics Technologies , October 2017 , pp. 1705 - 1712
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

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References

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