A process variation tolerant DLL-based UWB frequency synthesizer

@article{Ojani2012APV,
  title={A process variation tolerant DLL-based UWB frequency synthesizer},
  author={Amin Ojani and Behzad Mesgarzadeh and Atila Alvandpour},
  journal={2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS)},
  year={2012},
  pages={558-561}
}
A calibration technique for compensation of the generated phase error at the band hopping instant is proposed for a fast-hopping DLL-based injection-locked frequency synthesizer for WiMedia UWB band group #1. This technique makes the accuracy of the phase error compensation immune to process variations and so the VCDL nonlinearity. Simulated in 65-nm CMOS technology, the average synthesizer hopping time is 4 ns for all process corners. The phase noise performance at 1 MHz offset from 4488 MHz… CONTINUE READING