Novel positive and negative active inductor circuit designs

Abstract

Inductor is one of the main passive elements in electronics. It has a significant role in designs and are being used in electrical circuits widely. However, physical inductors have considerable drawbacks which limit their usage in low scale such as on-chip large die area consumption and magnetic filed creation. As an alternative solution, circuits that partly shows inductive behavior have been started to be proposed over the last decades. This types of proposed circuits could be seperated in two categories: grounded and floating active inductor circuits. Grounded active inductors are not as desirable as floating type of active inductors due to the fact that one the input ports should be grounded. Therefore, usage of the grounded active inductors is severely limited. On the other hand, floating inductors could possibly replace a passive inductor in any application, which makes them appealing. In this work, floating type positive and negative active inductor circuits are pre sented and their mathematical and simulation results are shared. In addition, the effect of the parasitic components of the devices on the behavior of the circuit is examined. In order to show the circuits’ usability, application instances and their results are shared and they are compared to a situation where an ideal inductor is employed. Overall, it could be said that the proposed circuits partly show inductive behavior over a limited frequency band.