(FD)2-TD and experimental comparison for a cylindrical cavity loaded with lossy dielectric

Abstract

In this article, the frequency-dependent finite-difference time-domain (FD)2-TD technique is used to analyze a coaxial-line excited cylindrical cavity loaded with an electrically lossy dielectric, modeled by a first-order Debye expression. Results obtained for the reflected voltage in the coaxial line are Fourier transformed to yield the reflection coefficient I' and input admittance at the coaxial aperture. Experimental measurements for I' show good agreement with predicted (FD)2-TD results.