Analysis of 3D planar structures by TLM cuboid condensed node

This paper presents the application of the transmission line matrix (TLM) method to numerical analysis of 3D planar structures by means of the 3D cuboid condensed node with cells of arbitrary aspect ratio. An air bridge and a rectangular spiral inductor are analyzed with the TLM cuboid scheme, and the results are compared with those obtained by measurement, the spectral domain approach and traditional stub-loaded TLM. The comparison clearly indicates that the cuboid cell yields results close to the reference data than the stub-loaded scheme.

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