On the optimal design of CC-based active filters

Abstract

In this paper we highlight drawbacks of the use of a priori optimized current conveyor (CC) as basic building block of active circuits. We use the optimization based technique to act directly on the ports of the current conveyors encompassing the overall active circuits in order to make them behave as 'ideal' as possible by minimizing their parasitic effects, offsets, etc. Three active circuits are presented, namely two active filters and a simulated inductance. Obtained results are given and compared to the ideal ones and also to those reached using an 'optimized' building block.