A Circularly-Polarized-Reconfigurable Patch Antenna With Liquid Dielectric

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

17 Scopus Citations
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Author(s)

  • Zhe CHEN
  • Hao-Zhan LI
  • Hang WONG
  • Xiao ZHANG
  • Tao YUAN

Detail(s)

Original languageEnglish
Article number9373721
Pages (from-to)396-401
Number of pages6
Journal / PublicationIEEE Open Journal of Antennas and Propagation
Volume2
Online published9 Mar 2021
Publication statusPublished - 2021

Link(s)

Abstract

A circularly-polarized-reconfigurable patch antenna based on fluidic control method is proposed in this paper. A liquid dielectric, ethyl acetate, is introduced to change the substrate of a patch antenna from homogeneous to inhomogeneous. Two orthogonal fundamental transverse magnetic (TM) modes are excited with a 90° phase difference in order to produce circularly polarized (CP) radiation. Then, the polarization of the proposed patch antenna is switchable between left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP) through the injection of the liquid dielectric to different channels in the substrate. For demonstration, the proposed antenna is designed at 2.4 GHz for radio frequency identification (RFID) application. According to the measured result, the proposed circular-polarization-reconfigurable patch antenna has a stable circularly polarized (CP) gain of 8 dBic and an efficiency of 90 % across the effective frequency band. Additionally, the measured overlapped impedance bandwidth of two polarization state is from 2.24 to 2.52 GHz which can fully cover the measured overlapped 3-dB axial ratio (AR) bandwidth from 2.38 to 2.43 GHz.

Research Area(s)

  • Liquid dielectric, polarization reconfigurable antenna, patch antenna, high gain

Citation Format(s)

A Circularly-Polarized-Reconfigurable Patch Antenna With Liquid Dielectric. / CHEN, Zhe; LI, Hao-Zhan; WONG, Hang et al.
In: IEEE Open Journal of Antennas and Propagation, Vol. 2, 9373721, 2021, p. 396-401.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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