Title :
A 695 pW standby power optical wake-up receiver for wireless sensor nodes
Author :
Kim, Gyouho ; Lee, Yoonmyung ; Bang, Suyoung ; Lee, Inhee ; Kim, Yejoong ; Sylvester, Dennis ; Blaauw, David
Author_Institution :
Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
We propose an ultra-low power optical wake-up receiver with a novel front-end circuit and communication scheme suitable for miniature wireless sensor node applications. Named “FLOW” for Free-space Low-Power Optical Wake-up, the receiver consumes 695pW in standby mode, which is ~6,000× lower than previously reported RF and ultrasound wake-up radios. In active mode, it consumes 140pJ/bit at 91bps. A pulse width modulated communication encoding scheme is used, and chip-ID masking enables selective batch-programming and synchronization of multiple sensor nodes.
Keywords :
encoding; optical receivers; pulse width modulation; wireless sensor networks; FLOW; Free-space Low-Power Optical Wake-up; chip-ID masking; communication scheme; front-end circuit; miniature wireless sensor node applications; multiple sensor nodes; power 695 pW; pulse width modulated communication encoding scheme; selective batch-programming; standby power optical wake-up receiver; synchronization; ultra-low power optical wake-up receiver; ultrasound wake-up radios; wireless sensor nodes; Bit error rate; Clocks; Delay; Protocols; Receivers; Resistors; Wireless sensor networks;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2012 IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1555-5
Electronic_ISBN :
0886-5930
DOI :
10.1109/CICC.2012.6330603
