A rigorous analysis of local oscillator pulling in frequency and discrete-time domain

@article{Li2009ARA,
  title={A rigorous analysis of local oscillator pulling in frequency and discrete-time domain},
  author={Chien-Jung Li and Chieh-Hsun Hsiao and Fu-Kang Wang and Tzyy-Sheng Horng and Kang-Chun Peng},
  journal={2009 IEEE Radio Frequency Integrated Circuits Symposium},
  year={2009},
  pages={409-412}
}
This study presents injection pulling effects on a local oscillator (LO) for wireless applications. A phase-locked loop under injection is analyzed in frequency domain to account for the inherent band-pass filtering on an injection signal. A discrete-time analysis is also provided to predict output spectra of the LO pulled by a sinusoidal and modulated injection signal. Comparison between theoretical predictions and experimental results shows excellent agreement.