Energy Harvesting for Mobile Computing Joe Paradiso Responsive ...
Energy Harvesting for Mobile Computing Joe Paradiso Responsive ...
Energy Harvesting for Mobile Computing Joe Paradiso Responsive ...
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Bill Brown<br />
Microwave-powered helicopter, 1964<br />
Beaming Power<br />
Wireless humidity sensor<br />
Martinez, 2002<br />
• Beaming power has a long history (Tesla, etc)<br />
• Rectannas can approach 80-90+% efficiency<br />
• Low power apps common in everyday environments<br />
– RFID (chips use 1 to 100 μW)<br />
• RF-powered sensors coming off the horizon<br />
– Passive LC and SAW devices, sensor chips<br />
– Wireless tire pressure and tire friction sensors<br />
– Implantable sensors <strong>for</strong> monitoring in vivo blood pressure<br />
RFID Tags
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