Asymmetrical coupled coplanar-type transmission lines with anisotropic substrates

In the paper, the asymmetrical coupled coplanar-type transmission lines (C-CTLs) are investigated. The analytical method for the general structure of asymmetrical C-CTLs with anisotropic media is presented, based on the quasistatic and the hybrid-mode formulations, for the first time. The line characteristics of interest, e.g., the propagation constants and the characteristic impedances, of the various types of C-CTLs with anisotropic substrates are also presented.