Experimental Realization of a Metamaterial Detector Focal Plane Array

被引：78

作者：

Shrekenhamer, David ^{[1
]}

Xu, Wangren ^{[2
]}

Venkatesh, Suresh ^{[3
]}

Schurig, David ^{[3
]}

Sonkusale, Sameer ^{[2
]}

Padilla, Willie J. ^{[1
]}

机构：

[1] Boston Coll, Dept Phys, 140 Commonwealth Ave, Chestnut Hill, MA 02467 USA

[2] Tufts Univ, NanoLab, Medford, MA 02155 USA

[3] Univ Utah, Dept Elect & Comp Engn, Salt Lake City, UT 84112 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 17期

基金：

美国国家科学基金会;

关键词：

TERAHERTZ; MICROWAVE; ANTENNAS; WAVE;

D O I：

10.1103/PhysRevLett.109.177401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：5

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