Solid-state and biological systems interface
Nan Sun, Yong Liu, et al.
ESSCIRC 2012
We introduce a single-loop PLL that operates in a narrower-bandwidth, integer- mode during phase lock and in a wider-bandwidth, fractional-N mode during transient. This hybrid PLL, as a generalization of the conventional variable-bandwidth PLL that shins only its bandwidth, simultaneously achieves the fast-locking advantage of the fractional-N PLL and design simplicity of the integer-N PLL, and as such, brings benefits in certain important PLL applications. In addition, the frequency division mode switching, unique in the hybrid PLL, enables a new, more digital protocol to execute bandwidth switching. A CMOS IC prototype attests to the validity of the proposed approach. © 2008 IEEE.
Nan Sun, Yong Liu, et al.
ESSCIRC 2012
Xiaoxiong Gu, Joel A. Silberman, et al.
IEEE Transactions on CPMT
Yong Liu, Byungsub Kim, et al.
ISSCC 2009
Timothy O. Dickson, Yong Liu, et al.
IEEE JSSC