Title :
Oscillation frequency analysis of N-stage CMOS ring oscillator with wired-OR connections
Author :
Shima, Takeshi ; Kusaga, Takashi
Author_Institution :
Dept. of Electron. & Inf., Frontiers Kanagawa Univ., Yokohama, Japan
fDate :
May 30 2010-June 2 2010
Abstract :
Quadrature oscillators are effective in applications such as clock-recovery circuits and complex signal processing. In this paper, the oscillation frequency of the CMOS inverter-type N-stage ring oscillator with wired-OR connections is analyzed. The analysis is applied to a quadrature oscillator proposed in 2008, called the ORIGAMI oscillator, and the extended N-stage ring oscillators. To verify the oscillation frequency analysis, the formulated oscillation frequency is compared with simulated frequency using HSPICE assuming 0.18 μm CMOS processes.
Keywords :
CMOS analogue integrated circuits; invertors; oscillators; CMOS inverter-type N-stage ring oscillator; HSPICE; ORIGAMI oscillator; clock-recovery circuits; complex signal processing; extended N-stage ring oscillators; oscillation frequency analysis; quadrature oscillators; size 0.18 mum; wired-OR connections; Analytical models; CMOS process; Clocks; Coupling circuits; Delay; Frequency; Inverters; Ring oscillators; Signal generators; Signal processing;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537551
