A parametric approach to describe distributed two-ports with lumped discontinuities for the design of broadband MMICs

This paper addresses the use of mixed lumped and distributed elements in the matching equalizers of broadband microwave communication subsystems in MMIC realizations. Construction of two-variable scattering functions for lossless equalizers with mixed lumped-distributed elements is discussed. For the computer aided design and the simulation of lossless distributed two-ports with lumped discontinuity models, a parametric real frequency matching technique is presented. It is expected that the proposed tool will find practical applications for accurate representation of MMIC layouts. A matching network design example is included to systematically exhibit the implementation of the proposed approach.