Performance investigation of Fin FET based MO-CCII and its applications: resistor-less multi-function bi-quadratic filter and balanced modulator.

Abstract

This paper presents an optimal design of a high-performance multi-output second-generation current conveyor (MO-CCII) based on 20nm Fin-Shaped Field Effect Transistor (FinFETs). Proposed MO-CCII has very low port X impedance and very high port Y impedance. The performance of the CCII has been thoroughly investigated in terms of DC, AC and transient characteristics of terminal voltages and branch currents and frequency response of port impedances. CCII shows the excellent high-frequency response of voltage as well as current transfer gains. The 3dB BW of voltage and current transfer gains are 11.2GHz and 11GHz, respectively. CCII provides excellent performance over its CMOS counterpart. Also, a resistor-less multi-function bi-quadratic filter is proposed. The filter depends on two CCIIs, a capacitor and does not require any resistors. It has three inputs and one output and realizes low-pass, high-pass and band-pass filters from a similar setup. FinFETs in the linear region are utilized as variable resistor to control filter properties. Nevertheless, the proposed filter has two floating capacitors which can be effortlessly realized in these days’ integrated circuit advancements. Also, a balanced modulator is proposed utilizing the proposed FinFET-based CCII and FinFET transistors only. Balanced modulator’s frequency of operation obtained is in GHz range.