A process and environment tolerant 3V, 2 GHz VCO with 0.8 /spl mu/m CMOS technology

Using a conventional 0.8 /spl mu/m CMOS process a voltage controlled oscillator (VCO) is developed which operates properly from 500 MHz up to over 2 GHz at 3 V supply voltage. Circuit optimization for higher oscillation frequency and a biasing scheme suitable for the optimized circuit enable the high frequency operation.