Fig. 1. A scheme for magnetic resonant coupling circuit.
Fig. 2. The circuit for magnetic resonant coupling board.
Fig. 3. The voltage and current at each node for magnetic resonant coupling circuit.
Fig. 4. Transmission parameter S21 vs. freqeuncy and coupling coefficent of k.
Fig. 5. The implementation of transmitting, resonant and receiving part with resonant frequency of 13.45 Mhz.
Fig. 6. Input waveform.
Fig. 8. Output waveform for mutual distance of 16 mm.
Fig. 10. Transmission efficiency vs. mutual distance for C=50 pF, L=2.8 μH.
Fig. 7. Output waveform of Schottky diode.
Fig. 9. Output waveform for mutual distance of 50 mm.
Fig. 11. Transmission efficiency vs. mutual distance of 50 mm with angles of receiver.
References
- Homepage of Wireless Power Consortium, http://www.wirelesspowerconsortium.com.
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- N. Tesla, "Apparatus for transmitting electrical energy," U.S. patent, 1914
- A. Kurs, A. Karalis, et. al. "Wireless power transfer via strongly coupled magnetic resonances," Science, vol. 317, no. 5834, pp. 83-86, 2007. DOI: 10.1126/science.1143254
- Junfeng Chen et al, "Metamaterial- Based High-Efficiency Wireless Power Transfer System at 13.56 MHz for Low Power Applications," Progress In Electromagnetics Research B, Vol. 72, 17-30, 2017. DOI: 10.2528/PIERB16071509
- Donggeon Kim and Chulhun Seo, "Omnidirectional Resonator in X-Y Plane Using a Crisscross Structure for Wireless Power Transfer," Journal of Electromagnetic Engineering and Science, vol. 15, no. 3, pp. 194-198, 2015. DOI: 10.5515/JKIEES.2015.15.3.194