CPC H02J 50/80 (2016.02) [H02J 50/12 (2016.02)] | 8 Claims |
1. A power transmitter executing communication with a power receiver, the power transmitter configured to:
synchronize a sampling start time to a pulse-width modulation (PWM) signal;
determine an average sampling rate for sampling a power carrier signal, wherein the power carrier signal is generated by the PWM signal;
sample the power carrier signal to obtain sample values;
limit an amplitude above or below an average of the sampled values to produce limited sampled values;
send the limited sample values to a 0 match filter and a 1 match filter;
search outputs of the 0 match filter and 1 match filter for peaks;
determine a current modem state; and
process the outputs of the 0 match filter and the 1 match filter based on the determined current modem state.
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