Abstract
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.
| Original language | English |
|---|---|
| Journal | IEEE Transactions on Antennas and Propagation |
| DOIs | |
| Publication status | Accepted/In press - May 11 2018 |
Fingerprint
Keywords
- Generators
- Microwave antennas
- Microwave circuits
- Microwave oscillators
- parity-time symmetry reflection
- Receivers
- Resistance
- resonance
- transmission
- Wireless communication
- Wireless power transfer
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
On-Site Wireless Power Generation. / Ra'di, Y.; Chowkwale, B.; Valagiannopoulos, C. A.; Liu, F.; Alu, A.; Simovski, C. R.; Tretyakov, S. A.
In: IEEE Transactions on Antennas and Propagation, 11.05.2018.Research output: Contribution to journal › Article
}
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.
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
UR - http://www.scopus.com/inward/record.url?scp=85046822188&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85046822188&partnerID=8YFLogxK
U2 - 10.1109/TAP.2018.2835560
DO - 10.1109/TAP.2018.2835560
M3 - Article
AN - SCOPUS:85046822188
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
ER -