An Incremental/decremental Memristor Implemented Exclusively Using a Voltage-controlled Second-generation Current Conveyor (VC-CCII)
Prof. Predrag Petrović
University of Kragujevac, Serbia
Abstract: In this study, a grounded incremental/decremental charge-controlled memristor emulator (MRE) is proposed, utilizing a single Voltage-Controlled Current Conveyor (VCCCII) as the active element along with a grounded capacitor. The emulator supports both incremental and decremental configurations, which are achieved through the incorporation of a simple switch. The proposed memristor emulator exhibits pinched hysteresis loops over a broad frequency range, up to 150 MHz, as verified through simulations conducted using TSMC 180 nm technology and the LTspice software. Additionally, a non-volatility test confirms the device's capability to retain memory. Comprehensive analyses, including Monte Carlo simulations, temperature variations, and supply voltage fluctuation tests, have been performed to assess the robustness of the proposed design. The emulator demonstrates low power consumption, with an average dissipation of 2.12 µW. A comparative performance evaluation with existing memristor emulators has been conducted to highlight its advantages. To evaluate the memory retention capability of the proposed memristor, a non-volatility test is conducted for both incremental and decremental configurations. The proposed solution offers a variable switching mechanism—soft and hard—depending on the value of the frequency of the input current signal and the applied capacitance. Furthermore, as an application, the proposed memristor design is integrated into Chua’s oscillator and an adaptive learning circuit to validate its feasibility for neuromorphic applications.
Brief Biography of the Speaker: Predrag B. Petrović was born in Čačak, Yugoslavia, on January 26, 1967. He received the B.S.E.E. and M.Sc. degrees in electrical engineering from the University of Belgrade Yugoslavia, in 1991 and 1994, respectively, and Ph.D. degree in the field of digital signal processing at the University of Novi Sad in 2004. His main interest is digital signal processing, microcontroller programming, power electronics, AD conversion, mathematics, and cryptology. He published more than 170 journals and conference papers, six university books, three international monograph and holds seven patents. He is the member of MENSA.