Ultra-thin tunable microwave absorber using liquid crystals

S. Simms; Vincent Fusco; Robert Cahill

doi:10.1049/el:20082191

Ultra-thin tunable microwave absorber using liquid crystals

S. Simms, Vincent Fusco, Robert Cahill

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

24 Citations (Scopus)

Abstract

A dynamically adaptive radar absorber is described which is based on a periodic array of microstrip patches that are printed on a 500 mu m-thick liquid crystal substrate. The measured reflectivity of the structure is less than -38 dB with a 200 MHz -10 dB bandwidth at 10.19 GHz when a +4 DC bias is applied. It is shown that a 34 dB reduction in signal loss occurs when the bias voltage is increased to 20 V.

Original language	English
Pages (from-to)	37-38
Number of pages	2
Journal	Electronics Letters
Volume	44
DOIs	https://doi.org/10.1049/el:20082191
Publication status	Published - Jan 2008

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title = "Ultra-thin tunable microwave absorber using liquid crystals",

abstract = "A dynamically adaptive radar absorber is described which is based on a periodic array of microstrip patches that are printed on a 500 mu m-thick liquid crystal substrate. The measured reflectivity of the structure is less than -38 dB with a 200 MHz -10 dB bandwidth at 10.19 GHz when a +4 DC bias is applied. It is shown that a 34 dB reduction in signal loss occurs when the bias voltage is increased to 20 V.",

author = "S. Simms and Vincent Fusco and Robert Cahill",

year = "2008",

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doi = "10.1049/el:20082191",

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AU - Fusco, Vincent

AU - Cahill, Robert

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AB - A dynamically adaptive radar absorber is described which is based on a periodic array of microstrip patches that are printed on a 500 mu m-thick liquid crystal substrate. The measured reflectivity of the structure is less than -38 dB with a 200 MHz -10 dB bandwidth at 10.19 GHz when a +4 DC bias is applied. It is shown that a 34 dB reduction in signal loss occurs when the bias voltage is increased to 20 V.

U2 - 10.1049/el:20082191

DO - 10.1049/el:20082191

M3 - Article

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VL - 44

SP - 37

EP - 38

JO - Electronics Letters

JF - Electronics Letters

ER -

Ultra-thin tunable microwave absorber using liquid crystals

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