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CMOS technology faces significant challenges at the nanoscale. Graphene-based electronics has emerged as a feasible promising to continue obeying Moore’s law. In this paper, a positive-type second-generation current conveyor (CCII+) builds with Graphene FET (GFET) inverters is proposed. A universal current-mode active filter is presented which can realise all standard filter functions employing CCII+ as an active element. The performance of the GFET filter was simulated and analysed with 0.18um GFET technology using ADS tools. The simulation results demonstrate that the proposed GFET filter consumes 1.2 mW at 10 MHz with ±0.5 V supply voltage. Furthermore, the centre frequency of the proposed filter can be tuned electronically. As an application, a quadrature oscillator example is given. The performance of first active filter based on GFET Current conveyor is compared with CMOS technology.

A universal current-mode current conveyor filter based on GFET inverter