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Intermittent transmitter circuit with novel feedback source follower amplifier for solar powered 5-mm-cubic wireless sensor nodes with 1/20 λ dipole antenna

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4 Author(s)
Oshima, S. ; NTT Microsyst. Integration Labs., Atsugi, Japan ; Matsunaga, K. ; Morimura, H. ; Harada, M.

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.

Published in:

VLSI Circuits (VLSIC), 2013 Symposium on

Date of Conference:

12-14 June 2013