Title :
Calculation of 3D electromagnetic problems by combining the MFIE and the modal expansion technique
Author :
Zhu, N.Y. ; Landstorfer, F.M.
Author_Institution :
Inst. fuer Hochfrequenztech., Stuttgart Univ., West Germany
Abstract :
By combining the magnetic field integral equation (MFIE) and the modal expansion technique, a three-dimensional vector integral formulation suitable for calculating conducting waveguide transitions of arbitrary shape (including horn antennas and radar cross section problems) is obtained. A numerical solution is obtained by using the method of moments and the conjugate gradient technique. The correctness of the method and of its numerical implementation is confirmed numerically. Good accuracy and convergence are achieved.<>
Keywords :
electromagnetic field theory; integral equations; magnetic fields; radar cross-sections; waveguide theory; 3D electromagnetic problems; 3D vector integral formula; MFIE; RCS; conducting waveguide transitions; conjugate gradient technique; convergence; horn antennas; magnetic field integral equation; method of moments; modal expansion technique; numerical solution; radar cross section; waveguide theory; Electromagnetic waveguides; Finite element methods; Horn antennas; Magnetic fields; Partial differential equations; Shape; Surface waves; Wave functions; Waveguide theory; Waveguide transitions;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115370
