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Low-Power Wireless Power Delivery
Abstract
This paper addresses design and implementation of integrated rectifier-antennas (rectennas) for wireless powering at low incident power densities, from 25 to 200$\mu{\hbox{W/cm}}^{2}$. Source–pull nonlinear measurement of the rectifying devices is compared to harmonic-balance simulations. Optimal diode RF and dc impedances for most efficient rectification, as a function of input power, are obtained. This allows optimized antenna design, which can eliminate or simplify matching networks and improve overall efficiency. As an example of the design methodology, Schottky diodes were characterized at 1.96 GHz and an antenna is matched to the optimal complex impedance for the most efficient rectifier. For incident power density range of interest, the optimal impedance is$137+{ j}149\ \Omega$, with an RF to dc conversion efficiency of the rectifying circuit alone of 63% and total rectenna efficiency of 54%.
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Cited by
Wireless power transfer techniques for implantable medical devices: a review
Khan, S. R., Pavuluri, S. K., Cummins, G., & Desmulliez, M. P. Y. (2020) · Sensors · doi:10.3390/s20123487 · Cited by 355
“ethodology is proposed in [164] to deter ine the opti al i pedance of the rectifier in order to accurately design and easure the output of the rectifier circuit for RFF.”
BackgroundMethodLow-Power Far-Field Wireless Powering for Wireless Sensors
Popovic, Z., Falkenstein, E. A., Costinett, D., & Zane, R. (2013) · Proceedings of the IEEE · doi:10.1109/jproc.2013.2244053 · Cited by 255
Self-citation
Metadata
- Authors
- Falkenstein, E., Roberg, M., & Popovic, Z.
- Venue
- IEEE Transactions on Microwave Theory and Techniques
- Published
- 2012-07
- Volume
- 60
- Issue
- 7
- Pages
- 2277-2286
- ISSN
- 0018-9480 (ISSN-L)
- 1557-9670
- OpenAlex
- W1990232484
- Cited by
- 186
- References
- 0
- FWCI
- 12.01
- Type
- journal article
- Language
- en
- Open access
- closed
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