Analytical Evaluation of the Asymptotic Impedance atrix of a Uniaxial Substrate with Roof-Top Functions

摘要

An asymptotic technique is presented to solve the asymp-otic part of the impedance matrix in the spectral do-main for printed circuit structures on a uniaxial sub-strate by using roof-top subdomain expansions. The finite double integral of the asymptotic part of the I impedance matrix is reduced to a finite one-dimensional f integral by performing the integral transform technique. The efficiency and accuracy of the proposed method are compared with those of the conventional method, and it is demonstrated that the proposed method reduce the computation and improve the accuracy for the anisotropic uniaxial case.