Large Metasurface Aperture for Millimeter Wave Computational Imaging at the Human-Scale.

Published

Journal Article

We demonstrate a low-profile holographic imaging system at millimeter wavelengths based on an aperture composed of frequency-diverse metasurfaces. Utilizing measurements of spatially-diverse field patterns, diffraction-limited images of human-sized subjects are reconstructed. The system is driven by a single microwave source swept over a band of frequencies (17.5-26.5 GHz) and switched between a collection of transmit and receive metasurface panels. High fidelity image reconstruction requires a precise model for each field pattern generated by the aperture, as well as the manner in which the field scatters from objects in the scene. This constraint makes scaling of computational imaging systems inherently challenging for electrically large, coherent apertures. To meet the demanding requirements, we introduce computational methods and calibration approaches that enable rapid and accurate imaging performance.

Full Text

Duke Authors

Cited Authors

  • Gollub, JN; Yurduseven, O; Trofatter, KP; Arnitz, D; F Imani, M; Sleasman, T; Boyarsky, M; Rose, A; Pedross-Engel, A; Odabasi, H; Zvolensky, T; Lipworth, G; Brady, D; Marks, DL; Reynolds, MS; Smith, DR

Published Date

  • February 20, 2017

Published In

Volume / Issue

  • 7 /

Start / End Page

  • 42650 -

PubMed ID

  • 28218254

Pubmed Central ID

  • 28218254

Electronic International Standard Serial Number (EISSN)

  • 2045-2322

International Standard Serial Number (ISSN)

  • 2045-2322

Digital Object Identifier (DOI)

  • 10.1038/srep42650

Language

  • eng