Charged Controlled Mem-Element Emulator and Its Application in a Chaotic System

Abstract

This paper proposes a charged controlled emulator model for memristor and memcapacitor using second-generation Current Conveyor (CCIIs) and Analog Multiplier (AM). The grounded and floating memelement circuits have been designed using two CCIIs and one multiplier in addition to some passive components. The grounded type of design requires three resistors and three capacitors while floating design necessitates only two resistors and two capacitors. With the help of a switch, the proposed design can be easily switched into a memristor or memcapacitor. The proposed emulator model has been theoretically analyzed and simulated in PSpice to substantiate the effectiveness and accuracy. The practicability of the circuit has been established using commercially available ICs AD844AN and AD633JN. Non-linear characteristics of the proposed memristor emulator have been used to design a chaotic system.

Mem-Elements Emulator Design With Experimental Validation and Its Application

“…The switch S is connected to terminal N of OTA for incremental configuration while the P terminal is grounded. The potential at terminal N of OTA is equal to the voltage across the capacitor (C1) given in equation (18). The output current of OTA is the same but opposite in polarity to that of the input current.…”

“…In this article, a memristor circuit has been proposed, which can be configured in both grounded as well as floating conditions and can be made to operate in both incremental as well as decremental configurations. The memcapacitor emulator [15][16][17][18][19][20][21][22] circuit in literature has been designed using different active blocks such as DXCCDITA [15], 4 CCIIs and 1 Op-amp [16], 3 CCIIs, 3 TOAs and 1 MR [17], 2 CCIIs, and 1 multiplier [18], 2 CCIIs and 1 MR [19], first design with 2 CCIIs, 1 multiplier and second design with CCII, OTA, multiplier [20] and 2 MO-OTAs and 1 multiplier [21]. The existing circuit in literature comprises either more number of active block or contains a multiplier, which makes the design complex, and it supplies around 1/10 th of the product term that eventually results in a reduced loop area of the hysteresis curve.…”

Modeling and Dynamics Analysis of a Universal Interface for Constructing Floating Fractional Order Mem-Elements

“…In the simulation experiment, a Valsa constant phase element (CPE) implementation circuit with m = 5 stages is used to emulate the FOC. Resistor and capacitor values of the FOC for C 1 = 18.335 nF/sec 1−α are summarized in Table 2 for fractional orders of α =0.95 and α =0.90, and the circuit parameters are A =1V,R 1 = 10 kΩ, R 2 = 100 kΩ, R 3 = 10 kΩ, V s = −6V .B ys u b s t i t u t i n g the set of parameters into equation (33), coefficients a 1 and b 1 are calculated as 0.545 Ω −1 V −1 s −α and 6 × 10 −4 Ω −1 ,r e s p e c t i v e l y .…”

“…In general, mem-element emulators have accelerated memristive research that can be adopted by device researchers for future on-chip integration. In the past, emulators have been used to build adjustable relaxation oscillators [25][26][27], digital modulation [28], adaptive learning circuits [29], chaotic systems [30][31][32][33][34], and neuromorphic circuits [35][36][37].…”

Resistorless Memristor Emulator Using CFTA and Its Experimental Verification

“…Also, in [32]- [41], the memristor models are experimentally validated by current mode commercially available integrated circuits (ICs) such as Current Feedback Operational Amplifier (CFOA/AD844), analog multiplier (AD633) and Operational Transconductance Amplifier IC (OTA/CA3080). On the other hand, memristor models [42][43][44][45][46] are implemented using commercially available ICs only, which require a large number of passive components like capacitors and resistors and having an operating frequency of few kHz. In [47]- [48], grounded memristors are realized using MOSFETs that operate in decremental mode only.…”