Title :
Low-frequency scattering from two-dimensional perfect conductors
Author :
Hansen, T.B. ; Yaghjian, A.D.
Author_Institution :
Electromagn. Inst., Tech. Univ. of Denmark, Lyngby, Denmark
Abstract :
Exact expressions have been obtained for the leading terms in the low-frequency expansions of the far fields scattered from three different types of two-dimensional perfect conductors: a cylinder with finite cross section, a cylindrical bump on an infinite ground plane, and a cylindrical dent in an infinite ground plane. By inserting the low-frequency expansions of the incident fields and Green´s functions into exact integral equations for the surface current, integral equations are obtained for the leading terms in the low-frequency expansions of the surface currents. The leading terms of the scattered fields are obtained from simple integrations of these expansions for the currents.<>
Keywords :
Green´s function methods; electromagnetic wave scattering; integral equations; Green´s function; cylindrical bump; cylindrical dent; far fields; finite cross section cylinder; incident fields; infinite ground plane; integral equations; leading terms; low-frequency electromagnetic scattering; low-frequency expansions; surface current; two-dimensional perfect conductors; Conductors; Diffraction; Electromagnetic scattering; Electrostatics; Integral equations; Magnetic moments; Magnetostatic waves; Polarization; Shape; Tellurium;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.174965
