A numerical model for multilayered microstrip phased-array antennas

A numerical model is presented to analyze multilayered microstrip infinite phased-array antennas. The model is based on modular approach where each layer is considered as a module characterized by its generalized scattering matrix. The individual scattering matrices are combined in appropriate sequence to yield the overall scattering matrix and the impedance matrix of the structure. Accuracy of the model is verified by comparison with available measured and computed results. The major advantages of the model are outlined in the conclusion.