Filter Design Based on Lossless Prototype Circuits

Summary

This chapter presents a simple example of a third‐order elliptic filter. It presents both its ladder LC structure and the corresponding gyrator–capacitor (gc) implementation. The most important thing is the textual description of this gC circuit in VHDLA. The chapter describes the synthesis, possible in the presented environments, of a seventh‐order elliptic filter and a so‐called filter pair. It focuses on the balance of powers transferred in the lossless system allows for sensitivity analysis of the considered gc circuits. The goal of the gCstudio environment is the symbolic analysis of the gC circuits. The parameters of the gC prototype circuit are calculated in the NANOstudio environment using the optimization method for a randomly generated starting point. The chapter presents the basics of the low‐sensitive strategy of filter design.