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IEEE Transactions on Microwave Theory and Techniques
Volume 48 Number 12, December 2000

Table of Contents for this issue

Complete paper in PDF format

The Perfectly Matched Layer as Lateral Boundary in Finite-Difference Transmission-Line Analysis

Thorsten Tischler, Student Member, IEEE and Wolfgang Heinrich Senior Member, IEEE

Page 2249.

Abstract:

Using a perfectly matched layer (PML) as lateral boundary in waveguide analysis introduces artificial modes and other unexpected effects. This paper presents results of a finite-difference frequency-domain approach and an analytical investigation of the PML's capability to simulate the lateral open space, including an accuracy estimation. A criterion how to detect the desired modes out of the mode spectrum is also given. The findings are verified for a coplanar waveguide radiating into the substrate.

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