Analysis and Design of Superharmonic Injection-Locked Multipath Ring Oscillators

Autor:	Chih-Kong Ken Yang, Amr Amin Hafez
Rok vydání:	2013
Předmět:	Injection locking Coupling Frequency divider Engineering Subharmonic function Control theory business.industry Transmitter Crystal oscillator frequencies Electrical and Electronic Engineering Division (mathematics) business Multipath propagation
Zdroj:	IEEE Transactions on Circuits and Systems I: Regular Papers. 60:1712-1725
ISSN:	1558-0806 1549-8328
DOI:	10.1109/tcsi.2012.2230591
Popis:	Frequency dividers can be modeled as superharmonic injection-locked oscillators. We propose a general model for ring-oscillator based dividers. Theoretically, the maximum division frequency of a frequency divider can be decoupled from the number of phases at its output when multipath coupling of ring oscillators is used. Accurate expressions for the locking range are derived that are used to find the optimum structure to maximize the division frequency. The results of the model are incorporated into a design procedure that can rapidly explore various coupling and sizing of the multipath structure. A design of a divider chain for a 48-Gb/s serializing transmitter is used as a demonstration.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::63dc3aca43184ba0eb8d1afe675b9386 https://doi.org/10.1109/tcsi.2012.2230591 Zobrazit plný text záznamu