A Dither-Less All Digital PLL for Cellular Transmitters

  title={A Dither-Less All Digital PLL for Cellular Transmitters},
  author={Luca Vercesi and Luca Fanori and Fernando De Bernardinis and Antonio Liscidini and Rinaldo Castello},
  journal={IEEE Journal of Solid-State Circuits},
An all-digital frequency synthesizer for cellular transmitter is presented. Low phase-noise is achieved both in-band and out-of-band exploiting a 2-dimensional Vernier time-to-digital converter and a dither-less digitally controlled oscillator. These building blocks heavily rely on digital calibration techniques to precisely and efficiently implement two-point modulation and spur cancellation in the presence of implementation impairments. The presented prototype shows an in-band phase noise of… CONTINUE READING
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