IMPLEMENTATION OF THE PERIODIC BOUNDARY-CONDITION IN THE FINITE-DIFFERENCE TIME-DOMAIN ALGORITHM FOR FSS STRUCTURES

被引：220

作者：

HARMS, P

MITTRA, R

KO, W

机构：

[1] Electromagnetic Communication Laboratory, Department of Electrical and Computer Engineering, University of Illinois, Urbana

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1994年 / 42卷 / 09期

关键词：

D O I：

10.1109/8.318653

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：

A method for implementing the general Floquet boundary condition in the finite-difference time-domain algorithm (FDTD) is presented. The Floquet type of phase shift boundary condition is incorporated into the time-domain analysis by illuminating the structure with a combination of sine and cosine excitations to generate a phasor representation of the solution at each time step. With this approach, the characteristics of periodic structures comprised of arbitrarily shaped inhomogeneous geometries can be computed for an arbitrary angle of incidence. Theoretical results are compared for various planar frequency selective surfaces (FSS) and for one with a three-dimensional element, e.g., a thick, double, concentric square loop.

引用

页码：1317 / 1324

页数：8

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