Title :
Intermittent transmitter circuit with novel feedback source follower amplifier for solar powered 5-mm-cubic wireless sensor nodes with 1/20 λ dipole antenna
Author :
Oshima, S. ; Matsunaga, Kaori ; Morimura, Hiroki ; Harada, Masaaki
Author_Institution :
NTT Microsyst. Integration Labs., Atsugi, Japan
Abstract :
An ultra-low power impulse OOK transmitter circuit for ultra-small wireless sensor nodes (WSNs) is developed. Intermittent driving RF circuits can dramatically reduce the power consumption and a differential source follower amplifier with a feedback controller can efficiently drive an electrically small antenna. The fabricated solar powered 5-mm-cubic node transmits signal 10 m with energy efficiency of 625 pJ/bit when the vibration sensor detects an event.
Keywords :
amplitude shift keying; differential amplifiers; dipole antennas; feedback amplifiers; low-power electronics; radio transmitters; wireless sensor networks; WSN; differential source follower amplifier; dipole antenna; size 5 mm; solar powered wireless sensor nodes; ultra-low power impulse OOK transmitter circuit; vibration sensor; Antenna feeds; Antenna measurements; Dipole antennas; Impedance; Power demand; Wireless communication; Wireless sensor networks;
Conference_Titel :
VLSI Circuits (VLSIC), 2013 Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4673-5531-5
