Load effect analysis of circular cilindrical cavity using 3-D TLM method

Cylindrical metallic cavity with circular cross-section loaded by lossy dielectric sample is analyzed using the Transmission-Line Modeling (TLM) method. For modeling purpose, a hybrid symmetrical condensed node (HSCN) in cylindrical coordinates, implemented in an appropriate software, is applied. The case when lossy dielectric sample is located on the bottom of the cavity is considered and the resonant frequencies versus filling factor are presented for the TM01ℓ mode. Also, numerical and experimental analysis of the resonant cavity loaded by lossy dielectric sample sloped in regard to cavity base (inhomogeneous in r and θ direction) is done in this paper.