title: Large Metasurface Aperture for Millimeter Wave Computational Imaging at the Human-Scale.
abstract: 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.
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: J N
authors.initials: JN
authors.lastname: Gollub
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: O
authors.initials: O
authors.lastname: Yurduseven
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: K P
authors.initials: KP
authors.lastname: Trofatter
authors.affiliation: Department of Electrical Engineering, University of Washington, Seattle, 98195, USA.
authors.forename: D
authors.initials: D
authors.lastname: Arnitz
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: M
authors.initials: M
authors.lastname: F Imani
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: T
authors.initials: T
authors.lastname: Sleasman
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: M
authors.initials: M
authors.lastname: Boyarsky
authors.affiliation: Evolv Technology, 200 West Street, Waltham, MA 02451, USA.
authors.forename: A
authors.initials: A
authors.lastname: Rose
authors.affiliation: Department of Electrical Engineering, University of Washington, Seattle, 98195, USA.
authors.forename: A
authors.initials: A
authors.lastname: Pedross-Engel
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: H
authors.initials: H
authors.lastname: Odabasi
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: T
authors.initials: T
authors.lastname: Zvolensky
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: G
authors.initials: G
authors.lastname: Lipworth
authors.affiliation: Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: D
authors.initials: D
authors.lastname: Brady
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: D L
authors.initials: DL
authors.lastname: Marks
authors.affiliation: Department of Electrical Engineering, University of Washington, Seattle, 98195, USA.|Department of Computer Science and Engineering University of Washington, Seattle, WA 98195, USA.
authors.forename: M S
authors.initials: MS
authors.lastname: Reynolds
authors.affiliation: Center for Metamaterials and Integrated Plasmonics. Duke University, Box 90291, Durham, NC 27708, USA.|Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: D R
authors.initials: DR
authors.lastname: Smith
mesh_terms: D006696:Holography; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008872:Microwaves; D011827:Radiation