A CMOS Direct-Digital BPSK Modulator Using an Active Balun and Common-Gate Switches

@article{Jackson2007ACD,
  title={A CMOS Direct-Digital BPSK Modulator Using an Active Balun and Common-Gate Switches},
  author={Brad R. Jackson and You Zheng and Carlos E. Saavedra},
  journal={2007 IEEE International Symposium on Circuits and Systems},
  year={2007},
  pages={2534-2537}
}
A 0.18 mum CMOS binary phase shift keying (BPSK) modulator circuit is proposed and demonstrated that can achieve high data rates and strong carrier suppression while having low DC power consumption and a very compact layout. The modulator accepts a single-ended microwave signal (2.4 GHz) and converts it to a balanced signal using an active balun. Complementary common-gate switches are then used to select one of the two balun outputs in correspondence with the digital data to produce BPSK… CONTINUE READING