A fully integrated w-band push-push CMOS VCO with low phase noise and wide tuning range

@article{Wang2011AFI,
  title={A fully integrated w-band push-push CMOS VCO with low phase noise and wide tuning range},
  author={To-Po Wang},
  journal={IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control},
  year={2011},
  volume={58}
}
A circuit topology suitable for a low-phase-noise wide-tuning-range push-push voltage-controlled oscillator (VCO) is proposed in this paper. By applying varactors connected between drain and source terminations of the cross coupled pair, the tuning range is effectively increased and the phase noise is improved. Moreover, a small capacitor is inserted between the VCO core and testing buffer to reduce loading effects on the VCO core. Furthermore, the enhanced second-harmonic output signal is… CONTINUE READING