Title :
An Efficient Pole Extraction Technique for the Computation of Green´s Functions in Stratified Media Using a Sine Transformation
Author :
Polimeridis, A.G. ; Yioultsis, T.V. ; Tsiboukis, T.D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki
Abstract :
An efficient and automatic algorithm for the extraction of surface wave poles of the multilayered spectral-domain Green´s function is presented. With the sine transformation, we have managed to locate any pole, no matter how close to the branch point singularity lies, something that has not been feasible with techniques proposed till now. The aforementioned transformation maps the krho-plane to the w-plane, where the branch point is removed, thus enabling the application of a fast numerical contour integration technique proposed, which is inaccurate when dealing with poles very close to the branch point
Keywords :
Green´s function methods; inhomogeneous media; surface electromagnetic waves; Green´s functions computation; multilayered spectral-domain; numerical contour integration technique; sine transformation; stratified media; surface wave poles extraction technique; Green´s function methods; Integral equations; Integrated circuit interconnections; Microstrip antennas; Moment methods; Nonhomogeneous media; Patch antennas; Printed circuits; Surface fitting; Surface waves; Closed-form Green´s functions; discrete complex image method (DCIM); pole extraction; sine transformation; surface wave poles;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.886574
