DESIGN OF X-BAND LC VOLTAGE CONTROLLED OSCILLATOR WITH TAIL NOISE FILTERING

Abstract

This thesis is a creative structural adjustment meant to reduce phase noise in an LC oscillator that is cross-coupled. The suggested architecture raises the output oscillation frequency while simultaneously decreasing phase noise. Switch transistor current shaping is the primary way for reducing phase noise. This entails precisely minimizing these transistor’s conduction angles at the output oscillation’s zero-crossing places. At 10 GHz, the oscillator works in the X-band frequency range. Phase noise is recorded at -90 dBc/Hz at a 100 KHz offset and -115.3 dBc/Hz at a 1 MHz offset. Cadence software was used to conduct simulations using TSMC 65nm RF CMOS technology with a 1.2V supply voltage. The voltage oscillation ranges from 0.15V to 1.05V. In addition, there is a 6.36mW power dissipation, a -187dB FoM, and a 2.42 GHz/V KV CO.