Low Cost Communications Demodulation for Wireless Power Receiver System

A wireless power transfer system configured to transfer alternating current (AC) wireless signals, the AC wireless signals including wireless power signals and wireless data signals, the system comprising:

• a wireless transmission system including a transmission antenna, the wireless transmission system configured to alter electrical characteristics of the AC wireless signals;
• and
• a wireless receiver system including
• a receiver antenna configured to couple with the transmitter antenna and receive the AC wireless signals from the wireless transmitter system;
• at least one sensor configured to detect electrical information associated with the electrical characteristics of the AC wireless signals, the electrical information including one or more of a current of the AC wireless signals, a voltage of the AC wireless signals, a power level of the AC wireless signals, or combinations thereof;
• a demodulation circuit configured to (i) receive the electrical information from the at least one sensor, (ii) detect a change in the electrical information, (iii) determine if the change in the electrical information meets or exceeds one of a rise threshold or a fall threshold, (iv) if the change exceeds one of the rise threshold or the fall threshold, generate an alert, (v) output a plurality of data alerts;
• and
• a receiver controller configured to (i) receive the plurality of data alerts from the demodulation circuit, and (ii) decode the plurality of data alerts into the wireless data signals.