Scholars@Duke

Interferometric direction finding with a metamaterial detector

Publication ,  Journal Article
Venkatesh, S; Shrekenhamer, D; Xu, W; Sonkusale, S; Padilla, W; Schurig, D
Published in: Applied Physics Letters
December 16, 2013
Published version (DOI)

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. © 2013 AIP Publishing LLC.

Duke Scholars

Willie John Padilla
Author Willie John Padilla Electrical and Computer Engineering

Published In

Applied Physics Letters

DOI

10.1063/1.4851936

ISSN

0003-6951

Publication Date

December 16, 2013

Volume

103

Issue

25

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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Venkatesh, S., Shrekenhamer, D., Xu, W., Sonkusale, S., Padilla, W., & Schurig, D. (2013). Interferometric direction finding with a metamaterial detector. Applied Physics Letters, 103(25). https://doi.org/10.1063/1.4851936
Venkatesh, S., D. Shrekenhamer, W. Xu, S. Sonkusale, W. Padilla, and D. Schurig. “Interferometric direction finding with a metamaterial detector.” Applied Physics Letters 103, no. 25 (December 16, 2013). https://doi.org/10.1063/1.4851936.
Venkatesh S, Shrekenhamer D, Xu W, Sonkusale S, Padilla W, Schurig D. Interferometric direction finding with a metamaterial detector. Applied Physics Letters. 2013 Dec 16;103(25).
Venkatesh, S., et al. “Interferometric direction finding with a metamaterial detector.” Applied Physics Letters, vol. 103, no. 25, Dec. 2013. Scopus, doi:10.1063/1.4851936.
Venkatesh S, Shrekenhamer D, Xu W, Sonkusale S, Padilla W, Schurig D. Interferometric direction finding with a metamaterial detector. Applied Physics Letters. 2013 Dec 16;103(25).

Published In

Applied Physics Letters

DOI

10.1063/1.4851936

ISSN

0003-6951

Publication Date

December 16, 2013

Volume

103

Issue

25

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences