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Title: Computational imaging using a mode-mixing cavity at microwave frequencies

Abstract

We present a 3D computational imaging system based on a mode-mixing cavity at microwave frequencies. The core component of this system is an electrically large rectangular cavity with one corner re-shaped to catalyze mode mixing, often called a Sinai Billiard. The front side of the cavity is perforated with a grid of periodic apertures that sample the cavity modes and project them into the imaging scene. The radiated fields are scattered by the scene and are measured by low gain probe antennas. The complex radiation patterns generated by the cavity thus encode the scene information onto a set of frequency modes. Assuming the first Born approximation for scattering dynamics, the received signal is processed using computational methods to reconstruct a 3D image of the scene with resolution determined by the diffraction limit. The proposed mode-mixing cavity is simple to fabricate, exhibits low losses, and can generate highly diverse measurement modes. The imaging system demonstrated in this letter can find application in security screening and medical diagnostic imaging.

Authors:
; ;  [1]; ; ; ;  [2]
  1. Xlim Research Institute, University of Limoges, 87060 Limoges (France)
  2. Center for Metamaterials and Integrated Plasmonics, Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708 (United States)
Publication Date:
OSTI Identifier:
22399071
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 19; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTENNAS; APERTURES; BORN APPROXIMATION; DIFFRACTION; GAIN; IMAGES; LOSSES; MICROWAVE RADIATION; PERIODICITY; RESOLUTION

Citation Formats

Fromenteze, Thomas, Decroze, Cyril, Carsenat, David, Yurduseven, Okan, Imani, Mohammadreza F., Gollub, Jonah, and Smith, David R. Computational imaging using a mode-mixing cavity at microwave frequencies. United States: N. p., 2015. Web. doi:10.1063/1.4921081.
Fromenteze, Thomas, Decroze, Cyril, Carsenat, David, Yurduseven, Okan, Imani, Mohammadreza F., Gollub, Jonah, & Smith, David R. Computational imaging using a mode-mixing cavity at microwave frequencies. United States. doi:10.1063/1.4921081.
Fromenteze, Thomas, Decroze, Cyril, Carsenat, David, Yurduseven, Okan, Imani, Mohammadreza F., Gollub, Jonah, and Smith, David R. Mon . "Computational imaging using a mode-mixing cavity at microwave frequencies". United States. doi:10.1063/1.4921081.
@article{osti_22399071,
title = {Computational imaging using a mode-mixing cavity at microwave frequencies},
author = {Fromenteze, Thomas and Decroze, Cyril and Carsenat, David and Yurduseven, Okan and Imani, Mohammadreza F. and Gollub, Jonah and Smith, David R.},
abstractNote = {We present a 3D computational imaging system based on a mode-mixing cavity at microwave frequencies. The core component of this system is an electrically large rectangular cavity with one corner re-shaped to catalyze mode mixing, often called a Sinai Billiard. The front side of the cavity is perforated with a grid of periodic apertures that sample the cavity modes and project them into the imaging scene. The radiated fields are scattered by the scene and are measured by low gain probe antennas. The complex radiation patterns generated by the cavity thus encode the scene information onto a set of frequency modes. Assuming the first Born approximation for scattering dynamics, the received signal is processed using computational methods to reconstruct a 3D image of the scene with resolution determined by the diffraction limit. The proposed mode-mixing cavity is simple to fabricate, exhibits low losses, and can generate highly diverse measurement modes. The imaging system demonstrated in this letter can find application in security screening and medical diagnostic imaging.},
doi = {10.1063/1.4921081},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 19,
volume = 106,
place = {United States},
year = {2015},
month = {5}
}