Partial element description (PED) for planar interconnection structures

The authors have developed a technique that allows one to automatically derive simple full wave equivalent lumped networks for general planar interconnection discontinuities. In this technique, we start from a so called partial element description (PED) of the given structure. This is a network interpretation of the numerical analysis of the given structure, analogous to Ruehli´s PEEC method (Ruehli et al. [1-3]). The circuit elements in this network are complex and frequency dependent. Then, this PED is reduced using a very general network reduction technilque, which was also developed by the same authors. The last step is the extraction from this PED of a network that has only real and frequency independent circuit elements. In this paper, we will discuss the derivation of the PED for microstrip structures.