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Computational imaging using a mode-mixing cavity at microwave frequencies

Publication ,  Journal Article
Fromenteze, T; Yurduseven, O; Imani, MF; Gollub, J; Decroze, C; Carsenat, D; Smith, DR
Published in: Applied Physics Letters
May 11, 2015

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.

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Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

May 11, 2015

Volume

106

Issue

19

Related Subject Headings

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

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Fromenteze, T., Yurduseven, O., Imani, M. F., Gollub, J., Decroze, C., Carsenat, D., & Smith, D. R. (2015). Computational imaging using a mode-mixing cavity at microwave frequencies. Applied Physics Letters, 106(19). https://doi.org/10.1063/1.4921081
Fromenteze, T., O. Yurduseven, M. F. Imani, J. Gollub, C. Decroze, D. Carsenat, and D. R. Smith. “Computational imaging using a mode-mixing cavity at microwave frequencies.” Applied Physics Letters 106, no. 19 (May 11, 2015). https://doi.org/10.1063/1.4921081.
Fromenteze T, Yurduseven O, Imani MF, Gollub J, Decroze C, Carsenat D, et al. Computational imaging using a mode-mixing cavity at microwave frequencies. Applied Physics Letters. 2015 May 11;106(19).
Fromenteze, T., et al. “Computational imaging using a mode-mixing cavity at microwave frequencies.” Applied Physics Letters, vol. 106, no. 19, May 2015. Scopus, doi:10.1063/1.4921081.
Fromenteze T, Yurduseven O, Imani MF, Gollub J, Decroze C, Carsenat D, Smith DR. Computational imaging using a mode-mixing cavity at microwave frequencies. Applied Physics Letters. 2015 May 11;106(19).

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

May 11, 2015

Volume

106

Issue

19

Related Subject Headings

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