AVŞAR AYDIN, Emine Çukurova Üniversitesi - Mühendislik‐Mimarlık Fakültesi - Elektrik‐Elektronik Mühendisliği Bölümü, Turkey , GÜNENÇ TUNCEL, Nezahat Osmaniye Korkut Ata üniversitesi - Mühendislik‐Mimarlık Fakültesi - Elektrik‐Elektronik Mühendisliği Bölümü, Turkey

Analysis of the Scattering Fields by Dielectric Sphere inside Different Dielectric Mediums: The Case of the Source and Observation Point is Reciprocal

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The electromagnetic scattering from canonical structure is an important issue in electromagnetictheory. In this study, the electromagnetic scattering from dielectric sphere with oblique incidence isinvestigated. While an incident wave comes with a certain angle, observation point turns from 0 to 360 degrees. The electromagnetic field is considered as a plane wave with H polarized. The scattered and transmitted field expressions with unknown coefficients are written. The unknown coefficients are obtained by using exact boundary conditions. Then, the sphere is considered as having frequency dependent dielectric permittivity. The frequency dependence is shown by Cole‐Cole model. The analytic results are compared with scattered field by dielectric sphere obtained by Harrington. The results are obtained faster and more reliable with reciprocal rotation. Ultra‐wide band (UWB) radar‐based imaging approach can solve a simpler computational problem faster dealing with only to identify the presence and location of significant scattering obstacles such malignant breast tumours. Therefore, it can be used in biomedical engineering as an alternative screening and diagnosis tool.

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Scattering , Dielectric sphere , Canonical structure , Oblique incidence , reciprocal rotation

Afyon Kocatepe University Journal Of Science an‎d Engineering

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