Compact tunable memristor and inverse-memristor emulators with grounded passive elements

ABSTRACT

The circuit-based emulation of memristor elements is becoming increasingly popular due to various advantages it offers over the physical architectures. The work reported in this paper presents the architectures of two novel circuit configurations dedicated to the realisation of an ideal memristor and a new but useful element, inverse memristor, respectively. Both presented circuit emulators are based on VDCC (Voltage Differencing Current Conveyor) active element. Over the previously reported bulky circuit emulators, the presented emulators have a significant design-related advantage since these are multiplier-less and grounded elements-based architectures. The developed circuits possess a tunability feature with respect to biasing voltage as well as the employed resistance. The mathematical description of pinch-off tuning and utilisation of inverse-memristor (for achieving better control over memristor characteristics) have been discussed with MATLAB simulations. To verify the workability of presented circuit architectures, the PSPICE environment has been chosen for simulation purpose. All the simulation results have been illustrated and discussed in detail. Later, the presented emulator circuits are developed using commercial ICs like CA3080 and AD844, and related results are described.

KEYWORDS:

• Memristor
• Inverse-memristor
• tunability
• VDCC

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data Availability statement

Data sharing not applicable to this article as no datasets were generated or analyzed during the current study.

Additional information

Notes on contributors

Kapil Bhardwaj

Kapil Bhardwaj is a research scientist at NIT Jamshedpur, Jharkhand, India. His research area includes analog integrated circuits, CMOS architectures, and Memristor Realizations. He has authored and co-authored more than twenty-five research articles in reputed journals and international conferences. His current research interest is memristor emulators and their applications in analog signal processing.

Mayank Srivastava

Mayank Srivastava was born in Agra, Uttar Pradesh, India. He obtained a B. E. degree in Electronics and Communication Engineering from Dr. B. R. A. University, Agra, M. Tech. with specialization in Engineering Systems from Dayalbagh Educational Institute (Deemed University) Agra and Ph.D. in Analog integrated circuits and signal processing from Jamia Millia Islamia, New Delhi, India. Currently, he is working as an Assistant professor with the Department of Electronics and Communication Engineering, NIT Jamshedpur, Jharkhand, India. His research interests are in the areas of Bipolar and CMOS Analog Integrated Circuits and Current Mode Signal Processing. Dr. Srivastava has authored or co-authored more than 65 research papers in International Journals and Conferences.