Linear analysis and speed maximization of feed forward ring oscillators

Author

Park, Young-Seok ; Han, Pyung-Su ; Choi, Woo-Young

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

fYear

2009

fDate

14-16 Dec. 2009

Firstpage

586

Lastpage

589

Abstract

A linear model for feed forward ring oscillators (FROs) is developed and the oscillator characteristics are analyzed using the model. The model allows the prediction of multiple oscillation modes as well as the oscillation frequency of each mode. Prediction based on the model agrees well with SPICE simulation results. Using the model, a five-stage FRO is optimized for its highest oscillation frequency. Post-layout simulation shows that 12-GHz oscillation frequency is achievable with a typical 0.18-Â¿m CMOS technology.

Keywords

CMOS integrated circuits; MMIC oscillators; CMOS technology; SPICE simulation; feed forward ring oscillators; frequency 12 GHz; high oscillation frequency; linear analysis; multiple oscillation mode prediction; oscillation frequency; post-layout simulation; size 0.18 mum; Analytical models; CMOS technology; Circuit simulation; Clocks; Feeds; Frequency; Predictive models; Ring oscillators; SPICE; Semiconductor device modeling; feedforward ring oscillator; oscillation frequency maximization; oscillator analysis; ring oscillator;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits, ISIC '09. Proceedings of the 2009 12th International Symposium on

Conference_Location

Singapore

Print_ISBN

978-9-8108-2468-6

Type

conf

Filename

5403874