Time-Domain Integral Equation Solver for Planar Circuits Over Layered Media Using Finite Difference Generated Green´s Functions

Author

Ghaffari-Miab, Mohsen ; Valdes, Fabio ; Faraji-Dana, Reza ; Michielssen, Eric

Author_Institution

Sch. of Electr. & Comput. Eng., Centre of Excellence on Appl. Electromagn. Syst., Univ. of Tehran, Tehran, Iran

Volume

62

Issue

6

fYear

2014

fDate

Jun-14

Firstpage

3076

Lastpage

3090

Abstract

A simple, highly accurate, and efficient 2D finite-difference technique for computing the direct convolution of time-domain Green´s functions (TDGFs) of layered media with temporal interpolators is presented. The proposed TDGFs are incorporated into a recently developed marching-on-in-time (MOT)-based time-domain integral equation (TDIE) solver based on noncausal high-order B-Spline temporal interpolators without requiring the prediction of future unknowns. Numerical results demonstrating the applicability of the technique to the analysis of various microwave structures are presented.

Keywords

Green´s function methods; differential equations; finite difference methods; integral equations; microwave circuits; splines (mathematics); 2D finite-difference technique; MOT-based TDIE; TDIE solver; differential equations; finite difference generated Green functions; layered media; marching-on-in-time; microwave structures; noncausal high-order B-spline temporal interpolators; planar circuits; planar microwave structures; time domain Green functions; time-domain integral equation; time-domain integral equation solver; Boundary conditions; Convolution; Equations; Finite difference methods; Nonhomogeneous media; Propagation; Time-domain analysis; Distance-dependent temporal interpolator; finite-difference generated time-domain Green´s functions (TDGFs); layered media; time-domain integral equation (TDIE);

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2014.2312423

Filename

6775273