Design and analysis of a spatially selective mirror for submillimeter-wave imaging

Orges Furxhi; Eddie L. Jacobs

doi:10.1117/12.818051

29 April 2009 Design and analysis of a spatially selective mirror for submillimeter-wave imaging

Orges Furxhi, Eddie L. Jacobs

Proceedings Volume 7309, Passive Millimeter-Wave Imaging Technology XII; 73090K (2009) https://doi.org/10.1117/12.818051
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

In this paper a two dimensional electromagnetic analysis and numerical simulations for a structure consisting of a resistive sheet backed by a spatially non-uniform perfectly conducting reflector is presented. The analyzed nonuniformity is a dip or bump on the reflector surface. The analysis is aimed at the design and evaluation of this structure as a spatially selective mirror for use in a single pixel sub-millimeter wave imager. Scattered and absorbed powers as well as the scattered radiation intensity are calculated in the far field for illumination by a linearly polarized, tapered Gaussian beam. Simulations for normally incident radiation and radiation at obtuse angles are presented. The scattered field in the far region is measured (simulation) by a receiving antenna and the dependence of the simulated received power on the position of the non-uniformity is observed. The dependence of the simulated received power on the size of the non-uniformity on the reflector is also presented. We conclude with the description of a single pixel sub-millimeter wave imager that uses the analyzed structure.

Citation Download Citation

Orges Furxhi and Eddie L. Jacobs "Design and analysis of a spatially selective mirror for submillimeter-wave imaging", Proc. SPIE 7309, Passive Millimeter-Wave Imaging Technology XII, 73090K (29 April 2009); https://doi.org/10.1117/12.818051

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