Frequency-agile load-modulated magnetic resonance wireless power transfer system for reliable near-field in-band signalling
2013
A frequency-agile load modulation scheme is proposed for reliable near-field magnetic communication with a magnetic resonance wireless power transfer system. A working prototype of the system to realise concurrent power and data transfer in the high-frequency band has been fabricated to verify that demodulation of the load modulation signal state detected on the transmitter side is stable over the distance ranges covering the near-field coupling region. This scheme can be a simple and efficient solution against potential issues such as non-communication and envelope inversion arising from strong magnetic resonance coupling.
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