A METHODOLOGY FOR DESIGN OF MULTILAYER MICROWAVE CIRCUITS

This paper reviews and extends the design procedures developed recentl y for a broad class of multilayer microwave circuits such as couplers, filters, and baluns. Multilayer configurations are now becoming incre asingly popular at microwave frequencies due to the several advantages over single-layer configurations. However, systematic design procedur es for implementing multilayer circuits have not been available. Examp les of multilayer circuits are presented for verifying the extended de sign procedures. The design procedure reported earlier for coupled lin e multilayer filters in a homogeneous dielectric Substrate environment has been extended to inhomogeneous multilayered microstriplike config urations. Modified procedure is verified by comparing the results with a full-wave electromagnetic simulation. (C) 1998 John Wiley & Sons, I nc.