Title :
A CMOS 2.45-GHz ring oscillator with temperature compensation
Author :
De Beaupré, Vincent Cheynet ; Rahajandraibe, Wenceslas ; Zaïd, Lakhdar ; Bas, Gilles
Author_Institution :
L2MP, Technopole de Chateau - Gombert, Marseille
Abstract :
This paper presents a 2.45-GHz CMOS ring voltage-controlled oscillator (VCO) with a temperature compensation of the oscillation frequency. This compensation is achieved thanks to a biasing current proportional to absolute temperature (PTAT). This method allows to achieve temperature coefficient as low as 73 ppm/degC in -40degC to 120degC temperature range while saving phase-noise performance as well as power consumption of the oscillator. A detailed study of the all-CMOS proposed structure is performed. Simulation results obtained with 0.28 mum STMicroelectronics CMOS technology are presented.
Keywords :
CMOS integrated circuits; UHF integrated circuits; UHF oscillators; voltage-controlled oscillators; CMOS ring oscillator; STMicroelectronics technology; VCO; biasing current proportional to absolute temperature; frequency 2.45 GHz; oscillation frequency; power consumption; size 0.28 mum; temperature -40 degC to 120 degC; temperature coefficient; temperature compensation; voltage-controlled oscillator; CMOS technology; Circuits; Delay; Energy consumption; Frequency; Ring oscillators; Temperature distribution; Temperature sensors; Transceivers; Voltage control;
Conference_Titel :
Electronics, Circuits and Systems, 2005. ICECS 2005. 12th IEEE International Conference on
Conference_Location :
Gammarth
Print_ISBN :
978-9972-61-100-1
Electronic_ISBN :
978-9972-61-100-1
DOI :
10.1109/ICECS.2005.4633530
