Flexible Liquid Metal Frequency Selective Surface with Tunable Second-Order Bandpass Response

Kevin Xu, Jun H. Choi, Komlan Payne, Jay K. Lee, Jeong Bong Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A flexible, fluidically tunable, second-order bandpass frequency selective surface (FSS) operating in the X-band is presented in this paper. The proposed multilayer structure utilizes elastomeric microfluidic channels to enclose and allow precise movement of gallium-based liquid metal slugs, while preserving its mechanically flexible nature. The liquid metal slug tuning elements are integrated into two periodic Jerusalem cross layers, which are coupled together through a periodic square aperture layer. By pneumatically shifting the position of the liquid metal slugs, the capacitance between adjacent Jerusalem cross elements can be linearly tuned, with high precision, to shift the operating frequency range of the filter in real time. Full-wave simulation of the bandpass FSS is performed for three different liquid metal slug orientations to demonstrate the tunability of the design.

Original languageEnglish (US)
Title of host publication2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages725-726
Number of pages2
ISBN (Electronic)9781728166704
DOIs
StatePublished - Jul 5 2020
Event2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Virtually, Toronto, Canada
Duration: Jul 5 2020Jul 10 2020

Publication series

Name2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings

Conference

Conference2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020
CountryCanada
CityVirtually, Toronto
Period7/5/207/10/20

Keywords

  • flexible metasurface
  • frequency selective surfaces
  • Galinstan
  • Liquid metal
  • periodic structure
  • tunable filters

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Instrumentation

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