New grounded passive elements-based external multiplier-less memelement emulator to realize the floating meminductor and memristor

https://link.springer.com/content/pdf/10.1007/s00034-021-01895-3.pdf

New Multiplier-Less Compact Tunable Charge-Controlled Memelement Emulator Using Grounded Passive Elements

This paper introduces novel electronically tunable floating and grounded memristor emulator circuits using voltage differencing gain amplifier and one capacitor. The decremental and incremental memristor emulators have been suggested for both floating as well as grounded type configurations. Decremental to incremental and incremental to decremental configurations of memristor emulators can be easily obtained. The fingerprint of memristor is the pinched hysteresis loops that are maintained for the significant range of frequencies from 5 kHz to 1 MHz. The proposed memristor emulator sustains its range of frequency for both grounded and floating configurations. The simulations have been done in Eldo simulation tool of Mentor Graphics using TSMC 0.18 µm complementary metal-oxide semiconductor (CMOS) technology parameters. The proposed electronically tunable memristor emulators are used to realize analog filters in view of performance verification.

High Frequency Electronically Tunable Floating Memristor Emulators employing VDGA and Grounded Capacitor

Memristor with defined operational specifications is a challenging task that promotes innovation in emulation circuit modelling. This article presents a single active block based compact memristor emulator architecture which is suitable for both floating and grounded circuit topologies. It effectively operates in incremental/decremental modes in both the configurations. The proposed model utilizes only one Differential Voltage Current Conveyor Transconductance Amplifier (DVCCTA) as an active block along with a few passive components. It discourages the use of extra sub-circuit components like multiple active blocks, summers and multipliers. The circuit is intended to work at ±1 V of dc power supply and has a power consumption of 8.74 mW. The proposed emulator model exhibits all the characteristics of an ideal memristor with an operating frequency of 12.8 MHz. It has wide working voltage range of 50–500 mV. The memristor model is built and simulated using the TSMC 0.18 μm CMOS process parameter. The reliability and effectiveness of the proposed model is verified through non-ideal, Monte-Carlo, process corner, non-volatility and temperature variation analysis. Furthermore, the memristor prototype is constructed on the breadboard using discrete ICs AD844AN and CA3080. The experimental outcome is found in accordance with the simulation. The applicability of the proposed memristor model is verified by implementing a memristor based Schmitt trigger circuit. 

A Compact Floating and Grounded Memristor model using Single Active Element

The design of the memristor emulator, which has found widespread of applications in analog computation, neuromorphic and biological systems, communications, etc., is much sought for. In this article, a resistorless electronically tunable grounded and floating memristor emulator by employing current-mode (CM) building blocks: operational transconductance amplifier (OTA) and voltage differencing buffered amplifier (VDBA) has been proposed. The proposed emulators can be configured as incremental and decremental operations. The robustness of the proposed emulator has been verified by performing various analyses: nonideal interpretations, process corner variations, temperature fluctuations, and nonvolatility behavior. The layout has been performed, and the theoretical fingerprint characteristics have been simulated and observed using 180-nm CMOS process parameters in the Cadence environment. The pinched hysteresis loop of the proposed memristor emulator maintains up to 5 MHz. The proposed memristor emulator uses less number of circuit components, but it maintains performance in terms of speed and operating range of frequency. Binary frequency shift keying (BFSK) has been performed using the proposed memristor to validate its functionality in the application. This memristor emulator with superior performance can be integrated into the communication system, analog computation, neuromorphic and biological systems, etc.

Resistorless Memristor Emulators: Floating and Grounded Using OTA and VDBA for High-Frequency Applications

This article presents a novel charge-controlled memristor emulator circuit. The proposed memristor emulator utilizes a single Current Follower Transconductance Amplifier (CFTA) as an active current mode analog building block and a grounded capacitor as a passive element. The circuit presented follows all the fingerprints of an ideal memristor. It operates in both incremental as well as decremental mode. The functional performance of the emulator circuit is verified at different operating frequencies and performs well up to 9 MHz . The theoretical and non-ideal analyses are verified for the proposed emulator. Moreover, Monte Carlo sampling and non-volatility analysis are performed to investigate the robustness of the emulator circuit. The functionality of the proposed model has been verified through PSPICE simulation using TSMC 0.18 $\mu m$ CMOS technology at the supply voltage of $\pm 1.2~V$ . The experimental confirmation of the presented circuit is also performed by building a breadboard micromodel using ICs CA3080 and AD844AN. Memristor based Chua’s circuit model is included as one of its applications.

/pdf/resistorless-memristor-emulator-using-cfta-and-its-3mz7d59u14.pdf

Resistorless Memristor Emulator Using CFTA and Its Experimental Verification

In this article, we have proposed an emulator using DVCC and OTA analog building blocks to emulate memristive behavior. Along with OTA and DVCC, one resistor and one capacitor are used in the memristor emulator. The presented memristor emulator works in incremental and decremental mode and operates up to 8 MHz. The proposed memristor emulator is simulated using PSpice with a 180 nm CMOS parameter. The flexibility of the memristor is tested by simulating it at different temperatures. The adaptability of the memristor emulator during circuit implementation is tested by connecting the memristors in parallel.

A new Grounded Memristor Emulator using DVCC and OTA

This research article exhibits grounded memristor emulator circuit. It includes a single Differential Voltage Current Conveyor Transconductance Amplifier (DVCCTA) as an active block with few grounded passive components. The incremental and decremental configurations for the proposed memristor can be achieved through a simple flip of the input ports. The proposed model also provides a resistor-based controllability feature. The workability of the proposed memristor has been demonstrated using PSPICE simulation with CMOS 0.18 μm TSMC technology parameter. The operating frequency and tunability responses in the current-voltage (I-V) plane have been verified in the simulation section and can operate in the megahertz range, showing acceptable accord with the theory. Furthermore, Monte Carlo process analysis, as well as the single and parallel-connected structure, have been analyzed to examine the robustness of the proposed ME model. The proposed emulator circuit is grounded, straightforward and prohibits the use of extra sub-circuit elements making it suitable for integrated circuits implementation.

Sagar Surendra Prasad

Papers

Resistorless Memristor Emulator Using CFTA and Its Experimental Verification

A new Grounded Memristor Emulator using DVCC and OTA

Grounded Memristor Emulator Using Single Active Block