Experimental realization of a metamaterial detector focal plane array

We present a metamaterial absorber detector array that enables room-temperature, narrow-band detection of gigahertz (GHz) radiation in the S band (2-4 GHz). The system is implemented in a commercial printed circuit board process and we characterize the detector sensitivity and angular dependence. A...

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Bibliographic Details
Published in:Physical review letters 2012-10, Vol.109 (17), p.177401-177401, Article 177401
Main Authors: Shrekenhamer, David, Xu, Wangren, Venkatesh, Suresh, Schurig, David, Sonkusale, Sameer, Padilla, Willie J
Format: Article
Language:English
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Summary:We present a metamaterial absorber detector array that enables room-temperature, narrow-band detection of gigahertz (GHz) radiation in the S band (2-4 GHz). The system is implemented in a commercial printed circuit board process and we characterize the detector sensitivity and angular dependence. A modified metamaterial absorber geometry allows for each unit cell to act as an isolated detector pixel and to collectively form a focal plane array . Each pixel can have a dedicated microwave receiver chain and functions together as a hybrid device tuned to maximize the efficiency of detected power. The demonstrated subwavelength pixel shows detected sensitivity of -77 dBm, corresponding to a radiation power density of 27 nW/m(2), with pixel to pixel coupling interference below -14 dB at 2.5 GHz.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.109.177401