COMPARISON BETWEEN A QUASI-STATIC SPACE-DOMAIN ANALYSIS AND A FULL-WAVE SPECTRAL-DOMAIN ANALYSIS FOR HIGH-FREQUENCY INTERCONNECTING CROSSOVER IN MULTILAYERED DIELECTRIC MEDIA

A quasistatic analysis and a full-wave analysis are presented to study the coupling between two microstrip lines crossing orthogonally above a ground plane in a multilayered dielectric substrate. The quasistati c approach is based on the space domain integral equation method, modi fied to easily take into account the multilayered media. For the full- wave analysis, the method of moments is used, in the spectral domain, to find the currents on the strips and to directly determine the scatt ering parameters. A typical structure is chosen to compare the two met hods.