Single CCTA based high frequency floating and grounded type of incremental/decremental memristor emulator and its application
This paper reports a new charge controlled practical memristor emulator circuit based on single current conveyor transconductance amplifier (CCTA). The proposed grounded and floating type memristor emulator circuit can be configured as both incremental and decremental types. Both the floating and grounded memristors are obtained simultaneously from the same circuit without any alteration. The circuit is very simple as compared to existing circuits and avoids the utilization of ADC, DAC, analog multiplier and multiple sub-circuits. It exploits the controllability of transconductance of CCTA for multiplication. It performs well up to a few MHz. Experimental verification of this circuit has been performed using the commercially available integrated circuits, CFOA (AD844AN) and OTA (CA3080). It has been tested at a frequency range from 5kHz to 30kHz. Moreover, as an application, amplitude modulation (AM) of frequency modulated (FM) signal and demodulation using the proposed memristor emulator circuit has been discussed. It confirms the functionality of the proposed circuit. The PSPICE simulation results and experimentally obtained results are included.
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