Parasitic circular patch antenna with continuously tunable linear polarization using liquid metal alloy

Chang Xu, Yi Wang, Jianhua Wu, Zhengpeng Wang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
104 Downloads (Pure)

Abstract

This article presents a center-feed parasitic circular patch antenna with continuously tuning linear polarization performance. Eutectic gallium-indium liquid metal alloy is employed to tune the angle of linear polarization continuously. The antenna is feed at the center of a circular patch with a ring slot. The rotational symmetry of the antenna helps maintain the impedance and radiation pattern at different polarization angles. The liquid metal is contained in a 1 × 1 mm channel etched in a polymethyl methacrylate cylinder. The polarization angle is tuned by controlling the location of a short bar of EGaln. The center resonant frequency of the demonstrated antenna is 5.19 GHz with a −10 dB impedance bandwidth of 0.24 GHz.

Original languageEnglish
Pages (from-to)727-733
Number of pages7
JournalMicrowave and Optical Technology Letters
Volume61
Issue number3
Early online date6 Dec 2018
DOIs
Publication statusPublished - 1 Mar 2019

Keywords

  • liquid metal
  • parasitic circular patch antenna
  • reconfigurable linear polarization
  • ring slot

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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