Wave Digital Approach-A Different Procedures for Modeling of Microstrip Step Discontinuities (original) (raw)

A theoretical model for the modeling of the microstrip structure as well as one type of regular discontinuity (step) is described. A microstrip structure, divided into cascade connection of uniform sections, can be efficiently modelled by wave digital networks. A wave digital network is a model of the microstrip structure modeled by wave digital elements. Appropriate choice of a minimal section number in that model is very important because of the direct influence on the sampling frequency of that digital model, and on accuracy of the desired response. Also, it is very important to achieve a good compensation of the effects of identified step discontinuities. In this paper, a choice of a minimal number of sections based on the given relative error and four different procedures for modeling the equivalent network of step discontinuity are presented. First of all, a wave digital element is formed for the equivalent T-network of the step discontinuity. In other procedures, the equivale...