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Title: Interferometric direction finding with a metamaterial detector

We present measurements and analysis demonstrating useful direction finding of sources in the S band (2–4 GHz) using a metamaterial detector. An augmented metamaterial absorber that supports magnitude and phase measurement of the incident electric field, within each unit cell, is described. The metamaterial is implemented in a commercial printed circuit board process with off-board back-end electronics. We also discuss on-board back-end implementation strategies. Direction finding performance is analyzed for the fabricated metamaterial detector using simulated data and the standard algorithm, MUtiple SIgnal Classification. The performance of this complete system is characterized by its angular resolution as a function of radiation density at the detector. Sources with power outputs typical of mobile communication devices can be resolved at kilometer distances with sub-degree resolution and high frame rates.
Authors:
;  [1] ; ;  [2] ; ;  [3]
  1. Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, Utah 84112 (United States)
  2. Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467 (United States)
  3. Department of Electrical and Computer Engineering, Tufts University, Medford, Massachusetts 02155 (United States)
Publication Date:
OSTI Identifier:
22253699
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 25; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ALGORITHMS; CLASSIFICATION; COMMUNICATIONS; DENSITY; DISTANCE; ELECTRIC FIELDS; EQUIPMENT; PERFORMANCE; PRINTED CIRCUITS; RESOLUTION; SIGNALS; SIMULATION