Title :
Ultra low power detection circuits in 130nm CMOS for a wireless UWB localization system
Author :
De Roover, Christophe ; Steyaert, Michiel
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ. Leuven, Heverlee, Belgium
Abstract :
This paper presents two detection circuits with an ultra low power consumption in the nW-range. A voltage detection circuit is designed and measured of which the output switches if the supply voltage reaches 1 V. It consumes an average current of merely 3 nA. Also a power dip detection circuit is designed and measured which detects if an RF-signal is present at the input. The minimal needed input power is -24.5 dBm, and it operates from a supply voltage of 0.5 V up to 1 V and consumes only 5 nW to 65 nW respectively when active. It operates with a carrier frequency from 40 MHz up to 900 MHz. It can serve as an OOK-demodulator for bitrates up to 6.67 kbps. The die area of both circuits combined, excluding buffers and including decoupling capacitors, is 310 mum times 550 mum.
Keywords :
CMOS integrated circuits; amplitude shift keying; demodulators; radio direction-finding; ultra wideband communication; CMOS system; OOK-demodulator; amplitude shift keying; current 3 nA; frequency 40 MHz to 900 MHz; power 5 nW to 65 nW; power consumption; power dip detection circuit; size 130 nm; ultra-low power detection circuits; voltage 0.5 V to 1 V; voltage detection circuit; wireless UWB localization system; Capacitors; Current measurement; Energy consumption; Logic; Radio frequency; Rectifiers; Switches; Switching circuits; Technical Activities Guide -TAG; Voltage;
Conference_Titel :
ESSCIRC, 2009. ESSCIRC '09. Proceedings of
Conference_Location :
Athens
Print_ISBN :
978-1-4244-4354-3
DOI :
10.1109/ESSCIRC.2009.5325949