Shunt-Feedback Ring Oscillator: a New Topology for Wideband Multiphase Signal Generations

Author

Yodprasit, Uroschanit ; Botteron, Cyril ; Farine, Pierre-André ; Heubi, Alexander

Author_Institution

Univ. of Neuchatel, Neuchatel

fYear

2007

fDate

9-11 Dec. 2007

Firstpage

78

Lastpage

81

Abstract

A negative-feedback scheme is applied to the gain stage of RC and LC ring oscillators to extend the frequency tuning range and to enhance the maximum oscillation frequency, respectively. This can be achieved without penalties in power consumption, supply voltage and silicon area. To verify the operation of the proposed topology, the theory of a three-stage shunt-feedback ring oscillator has been developed and compared with simulation results. Differential versions of 1.2-V shunt-feedback RC and LC ring oscillators operating, respectively, at 5 GHz and 11.6 GHz are demonstrated by simulations using a 0.18-mum CMOS technology.

Keywords

CMOS analogue integrated circuits; MMIC oscillators; RC circuits; feedback oscillators; signal generators; CMOS technology; LC ring oscillators; RC ring oscillator; frequency 11.6 GHz; frequency 5 GHz; frequency tuning range; gain stage; maximum oscillation frequency; negative-feedback scheme; size 0.18 mum; three-stage shunt-feedback ring oscillator; voltage 1.2 V; wideband multiphase signal generations; CMOS technology; Energy consumption; Frequency; Power supplies; Ring oscillators; Signal generators; Topology; Tuning; Voltage; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio-Frequency Integration Technology, 2007. RFIT 007. IEEE International Workshop on

Conference_Location

Rasa Sentosa Resort

Print_ISBN

978-1-4244-1307-2

Electronic_ISBN

978-1-4244-1308-9

Type

conf

DOI

10.1109/RFIT.2007.4443925

Filename

4443925