Title :
EM scattering by inhomogeneous structures in the Fresnel region of aperture antennas: a numerical approach
Author :
Chamma, W. ; Kashyap, S. ; Louie, A.
Author_Institution :
Electron. Countermeas. Sect., Defense Res. Establ. Ottawa, Ont., Canada
Abstract :
A procedure to study the electromagnetic (EM) scattering by inhomogeneous structures located in the Fresnel region of aperture antennas is investigated using the finite-difference time-domain (FDTD) method. The Huygen´s sources equivalence principle is used to model the EM fields emanating from these antennas. A large reflector antenna is used to demonstrate the application of this procedure.
Keywords :
aperture antennas; electromagnetic fields; electromagnetic wave scattering; finite difference time-domain analysis; inhomogeneous media; reflector antennas; EM fields; EM scattering; FDTD method; Fresnel region; Huygen´s sources equivalence principle; aperture antennas; electromagnetic scattering; finite-difference time-domain method; inhomogeneous structures; numerical approach; parabolic reflector antenna; Antennas and propagation; Aperture antennas; Buried object detection; Electromagnetic scattering; Finite difference methods; Geometry; Lattices; Reflector antennas; Solid modeling; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874449
