ASYMPTOTICAL CALCULATION OF ELECTROMAGNETIC WAVES SCATTERED FROM A DIELECTRIC COATED CYLINDRICAL SURFACE WITH PHYSICAL OPTICS APPROACH
In this study, quasi-optical scattering of finite source electromagnetic waves from a dielectric coated cylindrical surface is analysed with Physical Optics (PO) approach. A linear electrical current source is chosen as the finite source. Reflection coefficient of the cylindrical surface is derived...
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| Format: | Article |
| Language: | English |
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Pamukkale University
2004-02-01
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| Series: | Pamukkale University Journal of Engineering Sciences |
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| Online Access: | http://dergipark.ulakbim.gov.tr/pajes/article/view/5000089609 |
| Summary: | In this study, quasi-optical scattering of finite source electromagnetic waves from a dielectric coated cylindrical surface is analysed with Physical Optics (PO) approach. A linear electrical current source is chosen as the finite source. Reflection coefficient of the cylindrical surface is derived by using Geometrical Theory of Diffraction (GTD). Then, with the help of this coefficient, fields scattered from the surface are obtained. These field expressions are used in PO approach and surface scattering integral is determined. Evaluating this integral asymptotically, fields reflected from the surface and surface divergence coefficient are calculated. Finally, results obtained in this study are evaluated numerically and effects of the surface impedance to scattered fields are analysed. The time factor is taken as j te? in this study. |
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| ISSN: | 1300-7009 2147-5881 |