A polarization-reconfigurable wideband high-gain antenna using liquid metal tuning

Chang Xu, Zhengpeng Wang, Yi Wang, Peng Wang, Steven Gao

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
251 Downloads (Pure)


This article presents a polarization-reconfigurable wideband high-gain antenna based on liquid metal tuning. The antenna consists of a center-feed circular patch antenna with a C-shaped slot as the driven element. To broaden the bandwidth and improve the realized gain, a parasitic circular disc and 13 circular directors are employed. The direction of polarization can be tuned by changing the location of the liquid metal alloy contained in the tube. The relationship between the dimensions and the maximally achievable gain has been analyzed. The antenna has exhibited a -10 dB impedance bandwidth from 4.3 to 5.3 GHz (a fractional bandwidth of 21.2%). A 14.4 dBi gain is achieved at 5.3 GHz. The simulation and measurement results show good agreement with each other.

Original languageEnglish
Pages (from-to)5835-5841
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Issue number8
Early online date29 May 2020
Publication statusPublished - Aug 2020


  • Liquid metal
  • Yagi antenna
  • polarization reconfigurable

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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