Convergence acceleration of the doubly periodic Green's function for the analysis of thin wire arrays

Oleksandr Malyuskin, Vincent Fusco, Alexander Schuchinsky

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A method is proposed to accelerate the evaluation of the Green's function of an infinite double periodic array of thin wire antennas. The method is based on the expansion of the Green's function into series corresponding to the propagating and evanescent waves and the use of Poisson and Kummer transformations enhanced with the analytic summation of the slowly convergent asymptotic terms. Unlike existing techniques the procedure reported here provides uniform convergence regardless of the geometrical parameters of the problem or plane wave excitation wavelength. In addition, it is numerically stable and does not require numerical integration or internal tuning parameters, since all necessary series are directly calculated in terms of analytical functions. This means that for nonlinear problem scenarios that the algorithm can be deployed without run time intervention or recursive adjustment within a harmonic balance engine. Numerical examples are provided to illustrate the efficiency and accuracy of the developed approach as compared with the Ewald method for which these classes of problems requires run time splitting parameter adaptation.
Original languageEnglish
Pages (from-to)410-417
Number of pages8
JournalIET MICROWAVES ANTENNAS & PROPAGATION
Volume2
DOIs
Publication statusPublished - 2008

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