TY - JOUR
AU - Chen, Yi‐Jan Emery
AB - Summary This paper presents a 0.18‐µm complementary metal‐oxide‐semiconductor wideband phase‐locked loop with low reference spurs. The dual‐level charge‐pump current calibration technique is proposed to maintain a constant loop bandwidth for wide operation frequency range and achieve low reference spurs. The first level charge‐pump current calibration is seamlessly incorporated in the automatic frequency band hopping control and the mechanism also ensures enough negative transconductance for the voltage‐controlled oscillator to function throughout the whole frequency range. The charge‐pump current mismatch is calibrated by the second level charge‐pump current calibration combined with the pulse‐width scaling technique. The operation frequency range of the phase‐locked loop covers from 4.7 GHz to 6.1 GHz. The measured phase noise is−116 dBc/Hz at 1‐MHz offset and the reference spurs are below−66.8 dBc. Copyright © 2015 John Wiley & Sons, Ltd.
TI - A wideband low‐spur 0.18‐µm CMOS phase‐locked loop with bandwidth calibration
JF - International Journal of Circuit Theory and Applications
DO - 10.1002/cta.2088
DA - 2016-02-01
UR - https://www.deepdyve.com/lp/wiley/a-wideband-low-spur-0-18-m-cmos-phase-locked-loop-with-bandwidth-QAFk896Zt6
SP - 476
EP - 491
VL - 44
IS - 2
DP - DeepDyve
ER -