OTAs - based Positive / Negative Floating Inductance Simulator

This paper presents a method to realize floating inductance simulator using Operational Transconductance Amplifiers (OTAs). Both positive and negative floating inductances can be achieved without changing the circuit topology. The realization method is based on the use of commercially available OTAs and a grounded capacitor. The proposed circuit is attractive in terms of simple configuration and low cost. The resulting inductances can be electronically tuned by varying the external bias current of OTAs. Experimental results demonstrating the circuit performances are included.