volume | PIER Journals

2009-01-13

Zero Axial Parameter (Zap) Medium Sheet

Ismo Veikko Lindell,

Prof. Ismo Veikko Lindell

Department of Electrical and Communications Engineering

Helsinki University of Technology

Finland

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Ari Sihvola

Dr. Ari Sihvola

Radio Science and Engineering

Helsinki University of Technology

Finland

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Progress In Electromagnetics Research, Vol. 89, 213-224, 2009

doi:10.2528/PIER08120307

Abstract

Plane-wave reflection from and transmission through a slab of uniaxial anisotropic medium is studied and the concept of ZAP (Zero-Axial-Parameter) medium sheet is defined as the limiting case when the axial parameters and the thickness of the slab vanish simultaneously. It is shown that the ZAP sheet may act as a spatial filter for the incident waves with transmission in a narrow cone around normal direction. Such a sheet may find application in narrowing the radiation beam and reducing sidelobes of an antenna or as a computer privacy filter in optical frequencies.

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Ismo Veikko Lindell, and Ari Sihvola, "Zero Axial Parameter (Zap) Medium Sheet," Progress In Electromagnetics Research, Vol. 89, 213-224, 2009.
doi:10.2528/PIER08120307

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