A New Expression for the 3-D Dyadic FDTD-Compatible Green's Function Based on Multidimensional Z-Transform

被引：8

作者：

Stefanski, Tomasz P. ^{[1
]}

机构：

[1] Gdansk Univ Technol, Fac Elect Telecommun & Informat, PL-80233 Gdansk, Poland

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷

关键词：

Discrete Green's function (DGF); finite-difference time-domain (FDTD) methods; FUNCTION FORMULATION; IMPLEMENTATION;

D O I：

10.1109/LAWP.2015.2388955

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：

In this letter, a new analytic expression for the time-domain discrete Green's function (DGF) is derived for the 3-D finite-difference time-domain (FDTD) grid. The derivation employs the multidimensional Z-transform and the impulse response of the discretized scalar wave equation (i.e., scalar DGF). The derived DGF expression involves elementary functions only and requires the implementation of a single function in the multiple-precision arithmetic. For its verification, antennas were simulated in the DGF formulation of the FDTD method with the use of the derived expression demonstrating the correctness of the derivation.

引用

页码：1002 / 1005

页数：4

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