Mitigation of Reciprocal Mixing Caused by Phase Noise and Spurs in Wideband RF Receivers

As wideband RF receivers become increasingly attractive because of their great flexibility and reconfigurability, several challenges need to be addressed before they are practically feasible to replace narrowband receivers. In this talk, a technique to relax the trade-off between power consumption, LO phase noise, and tuning range in the VCO/LO designs will be presented. The technique exploits the symmetry of phase noise to cancel the reciprocal mixing products in the presence of either single-tone or modulated blockers, which bridges the performance gap between ring oscillators and LC-oscillators.