Modeling of Inhomogeneous Dielectric Layers Using TLM Cuboid Condensed NodeQ. Zhang and W. J. R. Hoefer
IEEE Antennas and Propagation Society International Symposium, pp 774-777, Newport Beach, California USA, June 18-23 1995.
AbstractThis paper describes a modification of the transmission line matrix (TLM) method for numerical analysis of multi-dielectric layer structures by means of the 3D cuboid condensed node. An interface scattering algorithm is applied to properly represent the impedance step across the interface. A parallel plate resonator with two dielectric layers is analyzed with the cuboid scheme, and the results are compared with theoretically accurate values as well as results obtained with traditional stub-loaded TLM. The comparison clearly indicates that the cuboid cell is more flexible and more accurate than the stub-loaded scheme.