Title :
Forward-scattering analysis in a focused-beam system
Author :
Shavit, Reuven ; Wells, Tom ; Cohen, Albert
Author_Institution :
Dept. of Electr. Eng. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel
fDate :
4/1/1998 12:00:00 AM
Abstract :
The forward scattering from an arbitrarily shaped cylinder is characterized by its induced field ratio (IFR). This paper describes how a focused-beam system is used to determine the scattering characteristics of an arbitrary-shaped cylinder. The fields of the transmitting and receiving antennas, as well as the scattered field from the cylinder, are described by equivalent fundamental Gaussian beams. An analytical procedure based on the computation of the coupling between the Gaussian beams in the focused-beam system is used to determine the IFR of the cylinder. The results obtained by this method verify well with the scattering characteristics computed analytically or numerically by the method of moments or finite-elements method
Keywords :
electromagnetic fields; electromagnetic induction; electromagnetic wave scattering; horn antennas; integral equations; method of moments; radomes; receiving antennas; transmitting antennas; 2D integral equation; antenna horn model; arbitrarily shaped cylinder; coupling; equivalent fundamental Gaussian beams; finite-elements method; focused-beam system; forward-scattering analysis; induced field ratio; method of moments; radomes; receiving antenna; scattering characteristics; transmitting antenna; Apertures; Beams; Dielectric measurements; Electromagnetic scattering; Engine cylinders; Feeds; Finite element methods; Lenses; Moment methods; Transmitting antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
