volume | PIER Journals

2012-08-22

A Comparison of the Performance of Cylindrical Lens Reflectors and Stepped-Indexed Cylindrical Luneburg Lens Reflectors: Simpler Is Better?

Kaiser Lock,

Dr. Kaiser Lock

Department of Mathematics

Macquarie University

Australia

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Sergei S. Vinogradova

Dr. Sergei S. Vinogradova

Department of Mathematics

Macquarie University

Australia

Homepage

Progress In Electromagnetics Research B, Vol. 43, 109-127, 2012

doi:10.2528/PIERB12053004

Abstract

This paper studies the characteristics of a constant-K lens when considered as a possible substitute for a Luneburg lens in a reflector. The competitiveness of the substitute lens is investigated in its 2D analogue, by comparing the backscattering radar cross section for the range of D/λ ∈ (0, 200). The performance of cylindrical reflectors with either a constant-K lens or a cylindrical Luneburg lens (approximated by a finite number of stepped-index dielectric layers) when illuminated by an electromagnetic plane wave is studied using the semi-analytic Method of Regularization. Because of similar underlying physical principles, these studies provide insight into the 3-D analogue. The radar cross section calculations of the two reflectors for incidence angles varying from normal to grazing incidence show that the cheaper-to-manufacture constant-K lens reflector is able to provide a more powerful and stable backscattering performance than the cylindrical Luneburg lens reflector, for electrical sizes in the range considered.

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Kaiser Lock, and Sergei S. Vinogradova, "A Comparison of the Performance of Cylindrical Lens Reflectors and Stepped-Indexed Cylindrical Luneburg Lens Reflectors: Simpler Is Better?," Progress In Electromagnetics Research B, Vol. 43, 109-127, 2012.
doi:10.2528/PIERB12053004

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