A RECURSIVE ALGORITHM FOR ANALYSIS OF PLANAR MULTIPLE LINES ON COMPOSITE SUBSTRATES FOR M(H)MICS AND HIGH-SPEED INTERCONNECTS

A simple recursive algorithm is presented based on the method of lines for the analysis of multilayered multiple microstrip lines or slots. Our previously proposed scheme of vertical multi-subregion space discr etization [1] is used to enhance the numerical accuracy. The recursive formulation is extended to model composite substrates which is aimed at reducing the unwanted coupling among different lines in M(H)MIC's a nd high-speed interconnects. Numerical results are shown for both quas istatic and hybrid-mode analyses. Results of multiple strips on a comp osite uniaxial anisotropic substrate are also presented.