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IEEE Microwave and Guided Wave Letters
Volume 9 Number 11, November 1999

Table of Contents for this issue

Complete paper in PDF format

Staircasing Errors in FDTD at an Air-Dielectric Interface

A. Akyurtlu, Student Member, IEEE, D. H. Werner, Senior Member, IEEE, V. Veremey, Member, IEEE, D. J. Steich, Member, IEEE, and K. Aydin, Senior Member, IEEE

Page 444.

Abstract:

An analytical expression is derived for the reflection coefficient of a staircased air/dielectric interface. This expression for the reflection coefficient is then used to determine the attenuation and propagation constants of the wave induced by staircasing. It is demonstrated here that the errors due to staircasing increase as the relative dielectric permittivity is increased and converges to the results for an air-PEC interface.

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