Abstract
A novel three-dimensional phase noise analysis diagram is presented. The minimization of phase noise and obtaining optimum bias condition through this process become more systematic and accurate. This visualization methodology increases design efficiency. Furthermore, a 2.4GHz fully integrated LC voltage-controlled oscillator (VCO) in a 0.25μm CMOS technology was designed using this optimization method. The resultant phase noise is -123 dBc/Hz at 1MHz offset from a 2.44GHz carrier. The designed VCO dissipates 3mA from a 1.5V supply voltage.