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

Kevin Xu; Jun Hwan Choi; Komlan Payne; Jay K. Lee; Jeong Bong Lee

doi:10.1109/IEEECONF35879.2020.9330077

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

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

Department of Electrical Engineering & Computer Science

Research output: Chapter in Book/Entry/Poem › Conference contribution

7 Scopus citations

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 language	English (US)
Title of host publication	2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	725-726
Number of pages	2
ISBN (Electronic)	9781728166704
DOIs	https://doi.org/10.1109/IEEECONF35879.2020.9330077
State	Published - Jul 5 2020
Event	2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Virtually, Toronto, Canada Duration: Jul 5 2020 → Jul 10 2020

Publication series

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

Conference

Conference	2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020
Country/Territory	Canada
City	Virtually, Toronto
Period	7/5/20 → 7/10/20

Keywords

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

ASJC Scopus subject areas

Computer Networks and Communications
Instrumentation

Access to Document

10.1109/IEEECONF35879.2020.9330077

Cite this

Xu, K., Choi, J. H., Payne, K., Lee, J. K., & Lee, J. B. (2020). Flexible Liquid Metal Frequency Selective Surface with Tunable Second-Order Bandpass Response. In 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings (pp. 725-726). Article 9330077 (2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IEEECONF35879.2020.9330077

Flexible Liquid Metal Frequency Selective Surface with Tunable Second-Order Bandpass Response. / Xu, Kevin; Choi, Jun Hwan; Payne, Komlan et al.
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2020. p. 725-726 9330077 (2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings).

Research output: Chapter in Book/Entry/Poem › Conference contribution

Xu, K, Choi, JH, Payne, K, Lee, JK & Lee, JB 2020, Flexible Liquid Metal Frequency Selective Surface with Tunable Second-Order Bandpass Response. in 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings., 9330077, 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings, Institute of Electrical and Electronics Engineers Inc., pp. 725-726, 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020, Virtually, Toronto, Canada, 7/5/20. https://doi.org/10.1109/IEEECONF35879.2020.9330077

Xu K, Choi JH, Payne K, Lee JK, Lee JB. Flexible Liquid Metal Frequency Selective Surface with Tunable Second-Order Bandpass Response. In 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2020. p. 725-726. 9330077. (2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings). doi: 10.1109/IEEECONF35879.2020.9330077

Xu, Kevin ; Choi, Jun Hwan ; Payne, Komlan et al. / Flexible Liquid Metal Frequency Selective Surface with Tunable Second-Order Bandpass Response. 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2020. pp. 725-726 (2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings).

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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.",

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N2 - 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.

AB - 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.

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

Abstract

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