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Scattering of a plane electromagnetic wave by the discontinuity of impedance planes

Yoshio KageYoshio Kage graduated from Kyushu Institute of Technology in 1963 in electrical engineering and completed the Master's program of the Graduate School of Nagoya University in 1966. He became Research Associate of Electronic Engineering Department of Kyushu Institute of Technology in the same year. After serving as a Lecturer, he became an Associate Professor in 1974. He has been working on the problems in electromagnetic wave propagation and wave applications. He is a member of Institute of Electrical Engineers of Japan and of the Institute of TelevisionKazuo AokiFaculty of Engineering, Kyushu University, Fukuoka, Japan 812Kuniaki YoshidomiFaculty of Engineering, Kyushu University, Fukuoka, Japan 812

Electronics and Communications in Japan (Part I Communications)journal1987en

Ochiq kirish: yoʻq

ABI

Annotatsiya

Abstract A method often used for analyzing the problem of scattering by a lossy dielectric slab is an approximate one in which the dielectric slab is replaced with an impedance plane with an infinitesimal thickness. We analyzed rigorously the problem of scattering from the discontinuity between two dielectric slabs by means of the Wiener‐Hopf method. The numerical calculations in such a method is quite complicated. If this problem can be replaced with that of two impedance planes, the analysis and computation can be simplified significantly. In this paper, the scattered field of the E wave by the discontinuity of two impedance planes is analyzed by the Wiener‐Hopf technique. The results are compared with the rigorous solution of the scattered E wave by the discontinuity of two dielectric slabs. From the numerical results of the two problems, it is found that the scattering patterns agree well if the slabs are lossy (σ/ω ⩾ 1.0) and the thickness is more than the skin depth. It is also found that the magnitude of the scattered wave almost agrees if the thickness is about one wavelength. Hence, if the slab thickness is more than a certain value for the E wave with the electric field component normal to the incident plane, the impedance plane approximation is effective for the lossy dielectric slab problem.

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Mavzular

Electromagnetic Scattering and Analysis Electromagnetic Simulation and Numerical Methods Numerical methods in inverse problems

Identifikatorlar

DOI: 10.1002/ecja.4410700211

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