Optimization of passive low power wireless electromagnetic energy harvesters
Abstract: This work presents the optimization of antenna captured low power radio frequency (RF) to direct current (DC) power converters using Schottky diodes for powering remote wireless sensors. Linearized models using scattering parameters show that an antenna and a matched diode rectifier can be described as a form of coupled resonator with different individual resonator properties. The analytical models show that the maximum voltage gain of the coupled resonators is mainly related to the antenna, diode and load (remote sensor) resistances at matched conditions or resonance. The analytical models were verified with experimental results. Different passive wireless RF power harvesters offering high selectivity, broadband response and high voltage sensitivity are presented. Measured results show that with an optimal resistance of antenna and diode, it is possible to achieve high RF to DC voltage sensitivity of 0.5 V and efficiency of 20% at −30 dBm antenna input power. Additionally, a wireless harvester (rectenna) is built and tested for receiving range performance
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Notes
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Sensors. 12, (2012), 3636-13663, DOI 10.3390/s121013636, issn: 1424-8220
IN COPYRIGHT http://rightsstatements.org/page/InC/1.0 rs
- Classification
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Elektrotechnik, Elektronik
- Keyword
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Schottky-Diode
- Event
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Veröffentlichung
- (where)
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Freiburg
- (who)
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Universität
- (when)
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2012
- Creator
- Contributor
- DOI
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10.3390/s121013636
- URN
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urn:nbn:de:bsz:25-freidok-132683
- Rights
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Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:26 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
Time of origin
- 2012
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