Patent ID: 8941353
Filing Date: 2015-01-27
Classification: H02J,H04L

Abstract:
1. An apparatus, comprising: a battery; a first resonant circuit configured to resonate at a first frequency, the first resonant circuit including a first coil and being configured to wirelessly receive a first signal having a power configured to charge said battery and including data; a second resonant circuit configured to resonate at a second frequency, the second resonant circuit including a second coil and being configured to wireless transmit a second signal; a demodulator configured to demodulate the first signal to obtain the transmitted data and charge the battery with the power from the first signal; and a modulator configured to modulate the second frequency of said second signal for transferring data externally, wherein the first and second resonant circuits, the demodulator, and the modulator are configured to provide full-duplex communication with external devices, wherein said modulator is configured to modulate said second signal by setting a frequency deviation by a determined quantity from said second frequency, said determined quantity being such as to prevent oscillation of the second resonant circuit from occurring outside a bell-shaped resonant curve centered on said second frequency and such as to prevent a frequency of the oscillation from being outside bandwidth of the second resonant circuit.