Design of 10.6 GHZ low phase noise LC-voltage controlled oscillator in 0.18μm CMOS technology

A low phase noise LC-voltage-controlled oscillator (LC-VCO) implemented in 0.18 μm CMOS technology is described in this paper dedicated to radio-frequency operation. The LC-VCO incorporates the differential NMOS cross-coupled pair as an active circuit to reduce the phase noise characteristic. The process to establish the oscillation frequency tuning is employing the LC tank core. Simulation results prove that the output frequency is 10.6 GHZ, an excellent phase noise (PN) which is -107.779 dBc/Hz at 1MHz offset from the 10.6 GHz carrier and the dissipated energy power is 9.8 Mw under 1.4 supply voltage.