New FTFNTA-based tunable charge-controlled memristance simulator and its mutation to floating flux-controlled memristor emulator

Abstract

This paper presents a novel charge-controlled memristance simulator utilizing an analog building block known as the Four Terminal Floating Nullor Transconductance Amplifier (FTFNTA) along with three grounded passive elements. The reported emulation configuration distinguishes itself from many existing memristor emulators by eliminating the necessity for voltage multiplication without compromising operating ranges. Instead, it utilizes the transconductance amplifier stage of the FTFNTA to achieve the multiplication function. The working of the discussed emulation configuration has been confirmed by performing simulations conducted using PSPICE employing the commercial off-the-shelf (COTS) available ICs utilized in constructing the FTFNTA. The current–voltage characteristics demonstrate that the hardware realization of the proposed circuit perfectly realizes the memristor function in both incremental/decremental configurations. The results also suggest that by modifying the parameters’ values the frequency range can be extended up to 12 MHz. Furthermore, the efficacy of the reported charge-controlled memristance simulator has been tested in a mutator circuit to realize a floating flux-controlled memristor. The results are in confirmation with the flux-controlled memristor’s element characteristics.