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Oscillation Mechanism Analysis of the N ‐stage Ring Oscillator ORIGAMI
Author(s) -
Shima Takeshi,
Kusaga Takashi
Publication year - 2010
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20585
Subject(s) - oscillation (cell signaling) , ring oscillator , ring (chemistry) , vackář oscillator , physics , quadrature (astronomy) , control theory (sociology) , voltage controlled oscillator , cmos , topology (electrical circuits) , electronic engineering , computer science , engineering , electrical engineering , quantum mechanics , voltage , chemistry , artificial intelligence , biochemistry , control (management) , organic chemistry
Quadrature oscillators are effective in applications such as clock‐recovery circuits and complex signal processing. In this paper, the oscillation mechanism of the N ‐stage ring oscillator is analyzed experimentally. The analysis is applied to a quadrature oscillator proposed in 2008, called the ORIGAMI oscillator. The oscillation mechanism of the ORIGAMI oscillator, in which the wired‐OR configuration is used, is analyzed. To verify the proposed oscillation mechanism, we extend the analysis to N ‐stage ring oscillators and describe the characteristics of the proposed N ‐stage ring oscillator. The oscillation frequency is also formulated. Analytical results are simulated and evaluated using an HSPICE simulator assuming 0.18 µm CMOS processes. Copyright © 2010 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.