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Design and Analysis of a W-Band Metasurface-Based Computational Imaging System

Publication ,  Journal Article
Zvolensky, T; Gollub, JN; Marks, DL; Smith, DR
Published in: IEEE Access
January 1, 2017

We design and numerically analyze a coherent computational imaging system that utilizes a sparse detector array of planar, frequency-diverse, metasurface antennas designed to operate over the W-band frequency range (75-110 GHz). Each of the metasurface antennas consists of a parallel plate waveguide, into which a center coaxial feed is inserted into the lower plate, launching a cylindrical guided wave. A dense array of metamaterial resonators patterned into the upper plate couples energy from the waveguide to free space radiative modes. The resonance frequency of each element, determined by its specific geometry, can be positioned anywhere within the W-band. The geometry of each element is chosen to produce a resonance frequency selected randomly from the W-band. Since a random subset of elements is resonant at any given frequency, the metasurface antenna forms a sequence of spatially diverse radiation patterns as a function of the excitation frequency. We analyze the metasurface aperture as an imaging system, optimizing key parameters relevant to image quality and resolution, including: aperture size; density and quality factor of the metamaterial resonators; number of detectors and their spatial distribution; bandwidth; and the number of frequency samples. A point-spread function analysis is used to compare the metasurface imager with traditional synthetic aperture radar. The singular value spectrum corresponding to the system transfer function and the mean-square-error associated with reconstructed images are both metrics used to characterize the system performance.

Duke Scholars

Published In

IEEE Access

DOI

EISSN

2169-3536

Publication Date

January 1, 2017

Volume

5

Start / End Page

9911 / 9918

Related Subject Headings

  • 46 Information and computing sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 08 Information and Computing Sciences
 

Citation

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Zvolensky, T., Gollub, J. N., Marks, D. L., & Smith, D. R. (2017). Design and Analysis of a W-Band Metasurface-Based Computational Imaging System. IEEE Access, 5, 9911–9918. https://doi.org/10.1109/ACCESS.2017.2703860
Zvolensky, T., J. N. Gollub, D. L. Marks, and D. R. Smith. “Design and Analysis of a W-Band Metasurface-Based Computational Imaging System.” IEEE Access 5 (January 1, 2017): 9911–18. https://doi.org/10.1109/ACCESS.2017.2703860.
Zvolensky T, Gollub JN, Marks DL, Smith DR. Design and Analysis of a W-Band Metasurface-Based Computational Imaging System. IEEE Access. 2017 Jan 1;5:9911–8.
Zvolensky, T., et al. “Design and Analysis of a W-Band Metasurface-Based Computational Imaging System.” IEEE Access, vol. 5, Jan. 2017, pp. 9911–18. Scopus, doi:10.1109/ACCESS.2017.2703860.
Zvolensky T, Gollub JN, Marks DL, Smith DR. Design and Analysis of a W-Band Metasurface-Based Computational Imaging System. IEEE Access. 2017 Jan 1;5:9911–9918.

Published In

IEEE Access

DOI

EISSN

2169-3536

Publication Date

January 1, 2017

Volume

5

Start / End Page

9911 / 9918

Related Subject Headings

  • 46 Information and computing sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 08 Information and Computing Sciences