Title :
A moment method solution for TMz and TEz waves illuminating two-dimensional objects above a lossy half space
Author :
Yang, Chang-Fa ; Wang, Te-Shun
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Inst. of Technol., Taipei, Taiwan
fDate :
8/1/1996 12:00:00 AM
Abstract :
A moment method (MM) solution for analyzing the electromagnetic shielding and scattering properties of two-dimensional (2-D) objects over a lossy half space is presented. The materials of the objects can be metal, dielectric, or magnetic. Also, the lossy half space is included to simulate the effects of the earth ground or any flat homogeneous lossy surface. An MM based on a volume formulation and a special Green´s function in the spectral domain is developed. Both TM z and TEz waves incident upon 2-D metal or lossy material structures are demonstrated for the shielding effects of those bodies in the presence of the lossy ground. Besides, the echo widths of a composite object either in free space or above the lossy half space are determined by using the MM. Some of the results are compared with those by other methods, and good agreements are obtained. The MM solution can be used to study the shielding and scattering problems for cylindrical structures located over a lossy ground
Keywords :
Green´s function methods; dielectric properties; earthing; electromagnetic shielding; electromagnetic wave scattering; magnetic materials; metals; method of moments; spectral-domain analysis; 2D lossy material structures; 2D metal structures; EM scattering properties; EM waves; Green´s function; TEz waves; TMz waves; composite object; cylindrical structures; dielectric materials; earth ground; echo widths; electromagnetic shielding; flat homogeneous lossy surface; free space; lossy ground; lossy half space; magnetic materials; moment method solution; shielding effects; spectral domain; two-dimensional objects; volume formulation; Dielectric materials; Electromagnetic analysis; Electromagnetic scattering; Electromagnetic shielding; Inorganic materials; Magnetic analysis; Magnetic domains; Magnetic materials; Moment methods; Two dimensional displays;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
