Liquid crystal tunable mm wave frequency selective surface

Wenfei Hu; Raymond Dickie; Robert Cahill; Harold Gamble; Y. Ismail; Vincent Fusco; David Linton; N. Grant; S. Rea

doi:10.1109/LMWC.2007-.903455

Liquid crystal tunable mm wave frequency selective surface

Wenfei Hu, Raymond Dickie, Robert Cahill, Harold Gamble, Y. Ismail, Vincent Fusco, David Linton, N. Grant, S. Rea

Research output: Contribution to journal › Article › peer-review

102 Citations (Scopus)

Abstract

A frequency selective surface (FSS) which exploits the dielectric anisotropy of liquid crystals to generate an electronically tunable bandpass filter response at D Band (110-170 GHz) is presented. The device consists of two printed arrays of slot elements which are separated by a 130-mu m thick layer of liquid crystals. A 3% shift in the filter passband occurs when the substrate permittivity is increased by applying a control signal of 10 V. Measured results show that the insertion loss increases from -3.7 dB to -10.4 dB at resonance (134 GHz), thus demonstrating the potential to create a FSS which can be switched between a transmitting and a reflecting structure.

Original language	English
Pages (from-to)	667-669
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	17
DOIs	https://doi.org/10.1109/LMWC.2007-.903455
Publication status	Published - 2007

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title = "Liquid crystal tunable mm wave frequency selective surface",

abstract = "A frequency selective surface (FSS) which exploits the dielectric anisotropy of liquid crystals to generate an electronically tunable bandpass filter response at D Band (110-170 GHz) is presented. The device consists of two printed arrays of slot elements which are separated by a 130-mu m thick layer of liquid crystals. A 3% shift in the filter passband occurs when the substrate permittivity is increased by applying a control signal of 10 V. Measured results show that the insertion loss increases from -3.7 dB to -10.4 dB at resonance (134 GHz), thus demonstrating the potential to create a FSS which can be switched between a transmitting and a reflecting structure.",

author = "Wenfei Hu and Raymond Dickie and Robert Cahill and Harold Gamble and Y. Ismail and Vincent Fusco and David Linton and N. Grant and S. Rea",

year = "2007",

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language = "English",

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journal = "IEEE Microwave and Wireless Components Letters",

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T1 - Liquid crystal tunable mm wave frequency selective surface

AU - Hu, Wenfei

AU - Dickie, Raymond

AU - Cahill, Robert

AU - Gamble, Harold

AU - Ismail, Y.

AU - Fusco, Vincent

AU - Linton, David

AU - Grant, N.

AU - Rea, S.

PY - 2007

Y1 - 2007

N2 - A frequency selective surface (FSS) which exploits the dielectric anisotropy of liquid crystals to generate an electronically tunable bandpass filter response at D Band (110-170 GHz) is presented. The device consists of two printed arrays of slot elements which are separated by a 130-mu m thick layer of liquid crystals. A 3% shift in the filter passband occurs when the substrate permittivity is increased by applying a control signal of 10 V. Measured results show that the insertion loss increases from -3.7 dB to -10.4 dB at resonance (134 GHz), thus demonstrating the potential to create a FSS which can be switched between a transmitting and a reflecting structure.

AB - A frequency selective surface (FSS) which exploits the dielectric anisotropy of liquid crystals to generate an electronically tunable bandpass filter response at D Band (110-170 GHz) is presented. The device consists of two printed arrays of slot elements which are separated by a 130-mu m thick layer of liquid crystals. A 3% shift in the filter passband occurs when the substrate permittivity is increased by applying a control signal of 10 V. Measured results show that the insertion loss increases from -3.7 dB to -10.4 dB at resonance (134 GHz), thus demonstrating the potential to create a FSS which can be switched between a transmitting and a reflecting structure.

U2 - 10.1109/LMWC.2007-.903455

DO - 10.1109/LMWC.2007-.903455

M3 - Article

VL - 17

SP - 667

EP - 669

JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

SN - 1531-1309

ER -