DocumentCode :
3610790
Title :
Ambient RF Energy Harvesting From a Two-Way Talk Radio for Flexible Wearable Wireless Sensor Devices Utilizing Inkjet Printing Technologies
Author :
Jo Bito ; Hester, Jimmy G. ; Tentzeris, Manos M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Volume :
63
Issue :
12
fYear :
2015
Firstpage :
4533
Lastpage :
4543
Abstract :
A complete design and additive fabrication process of flexible wearable radio-frequency (RF) energy harvesters for off-the-shelf 2 W two-way talk radios utilizing inkjet printing technology is discussed in this paper. As a result of numerous output dc power measurements of fabricated proof-of-concept prototypes, a maximum output power of 146.9 mW and 43.2 mW was achieved with an H-field and E-field harvester, respectively. Also, the effect of misalignment between receiver and hand-held radio on harvesting performance is discussed in detail. To verify their potential in real-world wearable autonomous RF modules, the operation of E- and H-field energy harvesters was verified by utilizing an LED and a microcontroller communication module under on-body and on-bottle conditions, and the effect of the energy harvesters on the performance of the harvested communication systems was inspected through received power measurements in an anechoic chamber.
Keywords :
energy harvesting; ink jet printing; light emitting diodes; microcontrollers; telecommunication power supplies; wearable computers; wireless sensor networks; E-field energy harvester; H-field energy harvester; LED; additive fabrication process; ambient RF energy harvesting; anechoic chamber; flexible wearable radio-frequency energy harvesters; flexible wearable wireless sensor devices; hand-held radio; harvested communication systems; harvesting performance; inkjet printing technologies; microcontroller communication module; power 146.9 mW; power 43.2 mW; power measurements; real-world wearable autonomous RF modules; two-way talk radio; Energy harvesting; Fabrication; Ink; Power measurement; Printing; Radio frequency; Substrates; Autonomous sensors; energy harvesting; flexible; inkjet printing; on-body; wearable;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.2015.2495289
Filename :
7331327
Link To Document :
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