Quasi-static analysis of microstriplines with variable-thickness substrates considering finite metallization thickness

摘要

This Letter presents an extension of the method of lines (MOL) to the analysis of microstriplines with variable-thickness substrates with the use of the quasi-static approximation. Discretization lines of varying length, according to the layer thickness, are used. Only Laplace wave equation have to be solved. The numerical results presented here permit illustration of the effect of arbitrary curved interfaces on the considered structures. As an example, the characteristic impedance, the capacitance PUL, the inductance PUL, and the effective dielectric constant are computed as a function of different shape characteristics of these microstripline structures. The effect of metallization thickness is also included in the analysis. The results show good agreement with data available in the literature.