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A Method to Prolong the Lifetime of Wireless Sensor Network

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4 Author(s)
Jie Wang ; Dept. of Electron. & Inf. Eng., Dalian Univ. of Technol., Dalian, China ; Qinghua Gao ; Hongyu Wang ; Wenzhu Sun

Power management is an important technique to prolong the lifetime of wireless sensor network (WSN). A radio-triggered based wake-up circuit is proposed to control the activation and shutting down of the wireless sensor node, and thus eliminates energy wasting wake-up periods. The radio-triggered wake-up circuit is optimized to achieve maximum sensitivity by characterizing both the impedance transformation network and the rectifier circuit. The simulation and measurement results show that the circuit can produce a DC output of 220 mV with the received power as low as -27.7 dBm.

Published in:

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Date of Conference:

24-26 Sept. 2009

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