TY - JOUR
T1 - On-Site Wireless Power Generation
AU - Ra'di, Y.
AU - Chowkwale, B.
AU - Valagiannopoulos, C. A.
AU - Liu, F.
AU - Alu, A.
AU - Simovski, C. R.
AU - Tretyakov, S. A.
N1 - Funding Information:
Manuscript received May 16, 2017; revised March 1, 2018; accepted April 21, 2018. Date of publication May 11, 2018; date of current version August 2, 2018. This work was supported in part by the European Union’s Horizon 2020 Research and Innovation Programme-Future Emerging Topics (FETOPEN) under Grant 736876, in part by NU ORAU Grant 20162031, and in part by the MES RK State-Targeted Program under Grant BR05236454. (Corresponding author: Younes Ra’di.) Y. Ra’di is with the Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712 USA (e-mail: younes.radi@utexas.edu).
PY - 2018/5/11
Y1 - 2018/5/11
N2 - Conventional wireless power transfer systems consist of a microwave power generator and a microwave power receiver separated by some distance. To realize efficient power transfer, the system is typically brought to resonance, and the coupled-antenna mode is optimized to reduce radiation into the surrounding space. In this scheme, any modification of the receiver position or of its electromagnetic properties results in the necessity of dynamically tuning the whole system to restore the resonant matching condition. It implies poor robustness to the receiver location and load impedance, as well as additional energy consumption in the control network. In this study, we introduce a new paradigm for wireless power delivery based on which the whole system, including transmitter and receiver and the space in between, forms a unified microwave power generator. In our proposed scenario the load itself becomes part of the generator. Microwave oscillations are created directly at the receiver location, eliminating the need for dynamical tuning of the system within the range of the self-oscillation regime. The proposed concept has relevant connections with the recent interest in parity-time symmetric systems, in which balanced loss and gain distributions enable unusual electromagnetic responses.
AB - Conventional wireless power transfer systems consist of a microwave power generator and a microwave power receiver separated by some distance. To realize efficient power transfer, the system is typically brought to resonance, and the coupled-antenna mode is optimized to reduce radiation into the surrounding space. In this scheme, any modification of the receiver position or of its electromagnetic properties results in the necessity of dynamically tuning the whole system to restore the resonant matching condition. It implies poor robustness to the receiver location and load impedance, as well as additional energy consumption in the control network. In this study, we introduce a new paradigm for wireless power delivery based on which the whole system, including transmitter and receiver and the space in between, forms a unified microwave power generator. In our proposed scenario the load itself becomes part of the generator. Microwave oscillations are created directly at the receiver location, eliminating the need for dynamical tuning of the system within the range of the self-oscillation regime. The proposed concept has relevant connections with the recent interest in parity-time symmetric systems, in which balanced loss and gain distributions enable unusual electromagnetic responses.
KW - Generators
KW - Microwave antennas
KW - Microwave circuits
KW - Microwave oscillators
KW - parity-time symmetry reflection
KW - Receivers
KW - Resistance
KW - resonance
KW - transmission
KW - Wireless communication
KW - Wireless power transfer
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U2 - 10.1109/TAP.2018.2835560
DO - 10.1109/TAP.2018.2835560
M3 - Article
AN - SCOPUS:85046822188
VL - 66
SP - 4260
EP - 4268
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 8
M1 - 8357932
ER -