A Novel Fully Floating Memristor Emulator Using OTA and Passive Elements

In this paper, a flux controlled high frequency fully floating type memristor emulator circuit based on OTA (Operational Transconductance Amplifier) is introduced. The emulator circuit is realized using operational transconductance amplifier, multi output transconductance amplifier, a grounded resistor, and a grounded capacitor. The proposed circuit can be configured in both incremental and decremental topology by changing the connections. Simulations were performed with LTSpice using
$0.18-\mu \mathrm{m}$
CMOS technology at a supply voltage of ±1.5V. The memristor characteristic can be electronically tuned by adjusting the transconductance of the OTAs. To obtain the characteristic at higher frequency in the current versus voltage plane, capacitor value can be change. The proposed emulator circuit performs well up to 20MHz.