Voltage Controlled Integrator and Linear Quadrature-VCO Using MMCC

A voltage controlled sinusoid oscillator based on the new multiplication-mode current conveyor (MMCC) building block is presented. The oscillator is realized using a double integrator loop(DIL) where a linear frequency (fo) versus the control voltage (Vc) tuning characteristics with quadrature signal generation in a range of 40KHz ? fo? 700KHz, had been experimentally verified. The active fo?sensitivity is low while the frequency stability factor (Sf >>1) is high at satisfactory values of total harmonic distortion (THD ? 1.11 %).