Title :
A low power consumption CMOS differential-ring VCO for a Wireless Sensor
Author :
Thabet, Hanen ; Meillère, Stéphane ; Masmoudi, Mohamed ; Seguin, Jean-Luc ; Barthelemy, Hervé ; Aguir, Khalifa
Author_Institution :
Electr. Eng. Dept., EMC Res. Group, Nat. Eng. Sch. of Sfax, Sfax, Tunisia
Abstract :
This paper describes a three-stage Voltage Controlled ring Oscillator (VCO) based on 0.35 μm CMOS standard technology. The VCO was designed for a transmitter operating in the 863-870 MHz European band for Wireless Sensor applications. A voltage VCTRL controls the oscillation frequency of the VCO. Simulation results of the fully differential VCO with positive feedback show that the estimated power consumption, at desired oscillation frequency and under a supply voltage of 3.3 V, is only 7.48 mW. The proposed VCO exhibits a phase noise lower than -126 dBc/Hz at 10 MHz offset frequency.
Keywords :
CMOS integrated circuits; UHF detectors; UHF integrated circuits; UHF oscillators; low-power electronics; network synthesis; phase noise; voltage-controlled oscillators; wireless sensor networks; CMOS standard technology; frequency 863 MHz to 870 MHz; fully differential ring VCO; oscillation frequency; phase noise; size 0.35 mum; three-stage voltage controlled ring oscillator; voltage 3.3 V; wireless sensor; CMOS integrated circuits; Frequency control; Phase noise; Power demand; Voltage control; Voltage-controlled oscillators; CMOS Ring VCO; Wireless sensor; low power consumption; positive feedback;
Conference_Titel :
New Circuits and Systems Conference (NEWCAS), 2011 IEEE 9th International
Conference_Location :
Bordeaux
Print_ISBN :
978-1-61284-135-9
DOI :
10.1109/NEWCAS.2011.5981224
