Calculation of the Free-Space Periodic Green's Function Using Equivalent Finite Array

被引：11

作者：

Boutami, Salim ^{[1
]}

Fall, Mandiaye ^{[1
]}

机构：

[1] Commissariat Energie Atom & Energies Alternat CEA, LETI, DOPT, Ingenieur Chercheur Lab Capteurs & NAnophoton LCN, F-38054 Grenoble 9, France

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2012年 / 60卷 / 10期

关键词：

Electromagnetic scattering by periodic structures; Ewald tranformation; Green's function; moment methods; periodic structures; planar arrays; Rayleigh waves; ELECTROMAGNETIC SCATTERING; EFFICIENT COMPUTATION; ACCELERATION TECHNIQUES; LATTICE SUMS; SERIES; 2-D; DIFFRACTION; EQUATION; 1-D;

D O I：

10.1109/TAP.2012.2210179

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a novel method for the calculation of the 2D and 3D free-space periodic Green's function (PGF), especially efficient when observation points are in the vicinity of the array plane, a case for which both spatial and spectral domain forms of PGF are known to be slowly convergent. The PGF is approximated by a truncation of the original array, and the assignment of new fictitious amplitudes to maintained sources. Both 2D and 3D numerical tests show that a highly accurate approximation of the PGF can be obtained with such an equivalent finite array composed of a few sources, making the method especially relevant for fast electromagnetic computation of periodic structures, with the method of moments (MoM) for example.

引用

页码：4725 / 4731

页数：7

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