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

fYear

2011

fDate

26-29 June 2011

Firstpage

81

Lastpage

84

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 V_CTRL 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;

fLanguage

English

Publisher

ieee

Conference_Titel

New Circuits and Systems Conference (NEWCAS), 2011 IEEE 9th International

Conference_Location

Bordeaux

Print_ISBN

978-1-61284-135-9

Type

conf

DOI

10.1109/NEWCAS.2011.5981224

Filename

5981224