OTA based high frequency tunable resistorless grounded and floating memristor emulators

Kanyal, Gaurav; Kumar, Pratik; Paul, Sajal K.; Kumar, Ashok

doi:10.1016/j.aeue.2018.05.027

Cited by 71 publications

(28 citation statements)

References 52 publications

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“…Memristor emulators can be divided into two types according to their structures: floating memristors [3][4][5][6][7][8][9][10][11][12][13] and grounded memristors [14][15][16][17][18][19][20][21][22][23][24], with only certain memristor emulator circuits being suitable for high frequencies in the order of megahertz (MHz) [4,5,7,10,16,17,23,24]. Some of them can operate with a variable configuration, as one of the solutions proposed here, meaning that it is possible to emulate grounded or floating type of memristor with the same circuits [25][26][27]. If the memristor emulator circuits are of a grounded type, its application areas are limited in circuit designs, rendering it unsuitable for use as a twoterminal device in more complicated circuits since the grounded restriction places a substantial obstacle on their connectivity with other circuit elements.…”

Section: Introductionmentioning

confidence: 99%

“…Activecircuit elements provide advantages in designing complex and nonlinear circuit-element patterns. For this reason, various activecircuit-element-based memristor circuits can be found in the literature based on operational amplifier (OpAmp) [3], secondgeneration current conveyor (CCII) [6,8,12,14,21,22], differential difference CCs (DDCC) [5], current backward transconductance amplifier (CBTA) [18], operational transconductance amplifier (OTA) [9,11,15,19,25] differential voltage-CC transconductance amplifier (DVCCTA) [17], currentfeedback OpAmp (CFOA) [13,20,26]. Floating memristor emulators using one CCTA, one CCII and few passive elements have been proposed in [4], while the circuits [27] are based on only one CCTA.…”

Section: Introductionmentioning

confidence: 99%

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Tunable flux‐controlled floating memristor emulator circuits

Petrovič

2019

IET Circuits, Devices & Systems

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This study proposes two new emulator circuits of floating (grounded) flux-controlled incremental/decremental memristor, based on modified z-copy current-voltage differencing transconductance amplifier (VDTA). The circuits use only one VDTA as an active element, a single grounded capacitor and a variable number of grounded resistors, which benefit from the integrated circuit. Furthermore, it can utilise metal-oxide-semiconductor (MOS) capacitance instead of the external capacitor in the circuit. It does not consist of any multiplication circuit block to obtain non-linear behaviour of the memristor. The parameters of the proposed memristor emulator can be tuned electronically by changing the biasing current of the VDTA. Change of the transconductance gain of the VDTA provides an advantage in the form of the externally controllable memristor. Through the simulation program with integrated circuit emphasis (SPICE) simulation which was carried out on the basis of 0.18 μm complementary MOS technology and experimental results using two MAX435 commercial devices as an active element, all theoretical assumptions and conclusions were reached in different operating frequencies, the capacitance value and process corner. The simulation test results have shown that the maximum frequency is 50 MHz.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunable flux‐controlled floating memristor emulator circuits

Petrovič

2019

IET Circuits, Devices & Systems

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“…Therefore, using emulators not only solves the problem of implementation but also makes it possible to implement the applications based on memristors which can later be experimentally tested. Therefore, to study the practical applications of memristor, several researchers reported the emulator designs of memristor 8‐29 . The main focus in the design of these emulators is on the complexity and speed/frequency of operation.…”

Section: Introductionmentioning

confidence: 99%

“…The complexity in these emulators has been considered in terms of the active and passive components used. Besides, in the recent past, the resistor/inductor‐less design of the emulator design with electronic tunability of the memristance is also given the prime importance 24,28,29 . In addition, the flexibility with which a memristor emulator can be connected in the circuit (grounded and floating configurations) is also considered 29 .…”

Section: Introductionmentioning

confidence: 99%

“…Besides, in the recent past, the resistor/inductor‐less design of the emulator design with electronic tunability of the memristance is also given the prime importance 24,28,29 . In addition, the flexibility with which a memristor emulator can be connected in the circuit (grounded and floating configurations) is also considered 29 . The speed/frequency of operation of memristor emulators has been enhanced by employing lower technology nodes of CMOS transistors 29 .…”

Section: Introductionmentioning

confidence: 99%

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Carbon nanotube field effect transistor (CNTFET) operational transconductance amplifier (OTA) based design of high frequency memristor emulator

Khurshid

Fatima

Khanday

et al. 2020

Int J Numerical Modelling

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The design and simulation of high frequency memristor emulator using carbon nanotube field effect transistor (CNTFET) based Operational Transconductance Amplifier (OTA) has been presented out in this paper. The proposed memristor emulator design consists of two CNTFET‐OTAs and one capacitor with both grounded and floating topologies available for applications. The proposed CNTFET memristor design emulator outperforms the conventional complementary metal oxide semiconductor (CMOS) based memristor emulator topologies. The performance comparison with the reported memristor emulator designs reveals that the proposed grounded and floating memristor design can work over a frequency range of 1 GHz and 10 MHz respectively in comparison to conventional CMOS based design, which works over a maximum range of 8 MHz and 0.4 MHz for grounded and floating memristor designs respectively. The proposed memristor emulator circuit also offers electronic tunability of the memristance which is important for digitally programmable application of memristors.

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New grounded and floating memristor emulators using OTA and CDBA

Yadav

Kumar

Pandey

2020

Circuit Theory & Apps

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SummaryIn this paper, grounded and floating decremental/incremental memristor emulators have been proposed by using an operational transconductance amplifier (OTA), current differencing buffered amplifier (CDBA), and a grounded capacitor. The proposed memristor emulators are simpler in design over most of the realizations of memristor emulators available in the literature. The proposed configurations of grounded and floating decremental memristor emulators can be easily converted into grounded and floating incremental memristor emulators. The pinched hysteresis loops obtained from proposed memristor emulators are maintained up to 1‐MHz frequency in both decremental and incremental configurations. Simulation results have been obtained using a Mentor Graphics Eldo simulation tool in 0.18‐μm complementary metal‐oxide semiconductor (CMOS) technology parameters. Analog filters have also been designed to verify the performance of proposed grounded and floating memristor emulators.

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OTA based high frequency tunable resistorless grounded and floating memristor emulators

Cited by 71 publications

References 52 publications

Tunable flux‐controlled floating memristor emulator circuits

Tunable flux‐controlled floating memristor emulator circuits

Carbon nanotube field effect transistor (CNTFET) operational transconductance amplifier (OTA) based design of high frequency memristor emulator

New grounded and floating memristor emulators using OTA and CDBA

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