The Effect of Electromagnetic Waves on Multilayer Orthogonal Microstrip Lines With and Without Defected Microstrip Structure

A method for analysis of multilayer coupled transmission lines with and without defected microstrip structure (DMS) excited by an external electromagnetic wave is presented. The structure is first decomposed into coupled transmission-line sections and crosstalk regions, then a lumped circuit model for the crosstalk region and the DMS section is presented, and the forced terms associated with the incident wave are calculated. Finally, by using the modal decoupling method, the unknown modal coefficients and subsequently voltages and currents are obtained. The validity of the method is verified by comparison between the analytical and the simulated results of HFSS full-wave simulator.