FULL-WAVE DESCRIPTION OF PROPAGATION AND LOSSES IN QUASI-PLANAR TRANSMISSION-LINES BY QUASI-ANALYTICAL SOLUTION

In this paper is presented a full-wave description of propagation and losses for some quasi-planar transmission lines by using a quasi-analy tical solution. This solution is derived from a recently proposed modi fied transverse resonance method (MTRM), in which an analytical prepro cessing has been introduced. The quasi-static contribution is obtained by an entirely analytical solution, so the resultant system of linear equations is very efficient. Furthermore, the resistive boundary cond itions as well as the complex substrate permittivity are taken into ac count in an intrinsic manner, leading to an accurate determination of dielectric and conductor losses in lossy transmission lines. Theoretic al and experimental results are presented for some commonly used quasi planar structures.