CMOS Tabanlı VDCC ve Fark Kuvvetlendiricisi FGMOS Tabanlı VDCC Devrelerinin Performans Analizinin Karşılaştırılması ve Filtre Uygulaması

Abstract

This paper presents a comparison and performance analysis of CMOS-based VDCC (Voltage Differencing Current Conveyor) circuits and differential amplifier FGMOS-based circuits. Differential amplifiers at the input stage of the VDCC circuit are designed using FGMOS instead of CMOS. Designing the differential amplifiers in the input stages of the VDCC circuit using FGMOS instead of CMOS amplifies the input signal of the circuit, providing a significant increase in linearity and voltage following properties. At the same time by using FGMOS transistors, the input stage of the circuit, which provides arithmetic calculations, is simplified. A three-input single output (TISO) type band-pass filter application is given to show the versatility of the VDCC circuit topology. The THD value of the CMOS-based VDCC filter circuit is found to be 15.99%. The THD value of the proposed differential amplifiers FGMOS-based VDCC filter circuit is found to be 1.03%. Theoretical analysis results confirm the simulation results. The presented CMOS and FGMOS-based band-pass filters are simulated using TSMC CMOS 0.18 μm technology with VDD, a power supply voltage equal to 0.9 V. The proposed circuit topology will be an essential reference in the literature for researchers to design new linearly tunable filters.