Stability Analysis of Bang-Bang Phase-Locked Loops for Clock and Data Recovery Systems

Autor:	Jae-Yong Ihm
Rok vydání:	2013
Předmět:	Physics Phase-locked loop Stability conditions Control theory business.industry Electrical and Electronic Engineering Bang bang business Phase detector Transfer function Radius of curvature (optics) Data recovery
Zdroj:	IEEE Transactions on Circuits and Systems II: Express Briefs. 60:1-5
ISSN:	1558-3791 1549-7747
Popis:	Bang-bang phase detector-based phase-locked loops (PLLs) with first- and second-order analog loop filters (LFs) are considered. Discrete-time (DT) models are presented for the bang-bang PLLs (BPLLs) in the presence of loop delays. The DT models show that the delay introduces an additional pole at in the DT open-loop transfer function. The pole is of multiple order proportional to the delay, indicating that the system is prone to be unstable. Stability analysis of the BPLLs is conducted to derive stability conditions, taking advantage of the radius of curvature technique to facilitate numerical calculations involved. It is shown that the stability conditions depend on the LF parameters, the loop delay, and the update time of the BPLLs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::23c63af88fdb74e2a4e7e76dcd1c7d78 https://doi.org/10.1109/tcsii.2012.2234913 Zobrazit plný text záznamu