Electronically tunable meminductor based on OTA

Abstract

In this study, a meminductor emulator circuit based on operational transconductance amplifiers is proposed. The circuit consists of two OTAs (one simple and one multi output), an analog multiplier, two resistors (one grounded and one floating) and two capacitors (one grounded and one floating). Due to the proposed meminductor emulator's electronically tunable property, the flux value of the circuit can be adjusted by changing the transconductance gain through the biasing current of the OTAs. In addition, the flux value can be tuned by changing the frequency of the input current signal. The input current-flux relationships, time responses, memory properties, etc. are simulated with the LTSPICE using 0.18 mu m TSMC CMOS process parameters to analyze the performance of the emulator circuit. Additionally, the proposed emulator is performed experimentally using the circuit components OPA860 and AD633.