Title :
Application of numerical regularization options to the integral-equation analysis of printed antennas
Author :
Vecchi, Giuseppe ; Matekovits, Ladislau ; Pirinoli, Paola ; Orefice, Mario
Author_Institution :
Dipt. di Elettronica, Politecnico di Torino, Italy
fDate :
3/1/1997 12:00:00 AM
Abstract :
In this letter, a novel numerical technique is applied to the analysis of printed antennas. The technique transforms the first-kind electric-field integral equation (EFIE) into a regularized second-kind equation, via extraction of two singular frequency-independent operators and their numerical inversion. Two options are presented in which the inversion is based on the eigenfunctions of these singular operators, that appear to be a generalization of the TM and TE modes of a magnetic-wall cavity, coupled by the edge singularities. The example of application shows favorable convergence properties
Keywords :
antenna theory; convergence of numerical methods; eigenvalues and eigenfunctions; electric fields; integral equations; inverse problems; mathematical operators; microstrip antennas; TE modes; TM modes; convergence properties; edge singularities; eigenfunctions; first-kind electric-field integral equation; integral-equation analysis; magnetic-wall cavity; numerical inversion; numerical regularization options; printed antennas; regularized second-kind equation; singular frequency-independent operators; Antenna measurements; Antennas and propagation; Convergence; Dielectrics; Geometry; Integral equations; Microwave theory and techniques; Rectangular waveguides; Shape; Transforms;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
