Title :
Antenna impedance matching for maximum power transfer in wireless sensor networks
Author :
Bird, Trevor S. ; Rypkema, Nicholas ; Smart, Ken W.
Author_Institution :
CSIRO ICT Centre, Sydney, NSW, Australia
Abstract :
The conditions for maximum power transfer from a source antenna to a receiving antenna are examined when the two antennas are in close proximity. As an example, computed and measured results are described for the power transfer efficiency for two-element Yagi antennas. These results can be used to design matching networks between the antenna and a load such as a voltage multiplier for power transfer in a wireless sensor network. It is concluded that maximum PTE could be obtained by continuously tuning the antenna and matching network as the antenna separation and load conditions change.
Keywords :
Yagi antenna arrays; impedance matching; receiving antennas; wireless sensor networks; antenna impedance matching; antenna separation; load conditions change; power transfer efficiency; receiving antenna; voltage multiplier; wireless sensor networks; Circuits; Energy management; Impedance matching; Loaded antennas; Radio frequency; Receiving antennas; Rectifiers; Transmitting antennas; Voltage; Wireless sensor networks;
Conference_Titel :
Sensors, 2009 IEEE
Conference_Location :
Christchurch
Print_ISBN :
978-1-4244-4548-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2009.5398165
