Experimental results with two wireless power transfer systems

Author

Sample, Alanson ; Smith, Joshua R.

Author_Institution

Intel Res. Seattle, Seattle, WA

fYear

2009

fDate

18-22 Jan. 2009

Firstpage

16

Lastpage

18

Abstract

This paper describes two wireless power transfer systems. The Wireless Identification and Sensing Platform (WISP) is a platform for sensing and computation that is powered and read by a commercial off-the-shelf UHF (915 MHz) RFID reader. WISPs are small sensor devices that consume on the order of 2 uW to 2 mW, and can be operated at distances of up to several meters from the reader. The second system harvests VHF or UHF energy from TV towers, with power available depending on range and broadcast transmit power. We report on an experiment in which 60 uW is harvested at a range of about 4 km.

Keywords

UHF devices; radiofrequency identification; telecommunication power supplies; commercial off-the-shelf UHF RFID reader; frequency 915 MHz; power 2 muW to 2 mW; wireless identification and sensing platform; wireless power transfer systems; Battery charge measurement; Microcontrollers; Poles and towers; Power measurement; Radio frequency; Radiofrequency identification; TV; Temperature sensors; Voltage; Wireless sensor networks; RF Power Harvesting; Sensing; UHF RFID; Wireless Power Transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Symposium, 2009. RWS '09. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2698-0

Electronic_ISBN

978-1-4244-2699-7

Type

conf

DOI

10.1109/RWS.2009.4957273

Filename

4957273