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International Journal of Antennas and Propagation
Volume 2016 (2016), Article ID 3782373, 7 pages
http://dx.doi.org/10.1155/2016/3782373
Research Article

A Liquid Metal Conical Helical Antenna for Circular Polarization-Reconfigurable Antenna

1School of Information Science and Technology, Dalian Maritime University, Dalian, Liaoning 116026, China
2School of Physics and Electronic Technology, Liaoning Normal University, Dalian, Liaoning 116026, China

Received 24 October 2015; Revised 18 December 2015; Accepted 29 December 2015

Academic Editor: Mourad Nedil

Copyright © 2016 Yun Zhou et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A novel polarization-reconfigurable conical helical antenna based on the liquid metal is presented. The antenna is implemented by using truncated structure, variable pitch angle, a matching stub, and a mechanical autorotation device. The experimental results show that a good agreement between simulations and measurements is obtained. The gain of the antenna achieves higher than 8 dBi in the work band (1525–1660.5 MHz), and the 3 dB axial ratio (AR) bandwidth reaches 410 MHz. The polarization mode of the antenna can be switched between right-hand and left-hand circular polarization.