Generalized Spectral Domain Technique Theory and Applications

A new formulation of the Spectral Domain Technique (SDT) is presented, namely, the Generalized Spectral Domain Technique (GSDT). This formulation can be applied to all planar circuits. open or closed, strip-like or slot-like, including an arbitrary number of isotropic layers. Recurrent relations allow us to reduce the problem to the level of the strip/slot interface. A unified analytical form of the "GSDT Green Matrix" is carried out. The GSDT is well suited for the computation of propagation constants. impedances or pseudo-impedances. field map of the fundamental and higher order modes. Several computed results concerning open structures are presented and compared with experimental results.