Wireless power transmitter for high fidelity communications with amplitude shift keying

A circuit for a wireless power transmitter, the wireless power transmitter configured for transmitting alternating current (AC) wireless signals to a wireless power receiving system, the AC wireless signals including, at least, wireless power signals and amplitude shift keying (ASK) wireless data signals, the circuit comprising:

• an amplifier, the amplifier including:
• at least one transistor that is configured to receive a driving signal at a gate of the at least one transistor and invert a direct current (DC) input power signal to generate the AC wireless signals at an operating frequency, and
• a damping circuit that is configured to dampen the AC wireless signals during transmission of the ASK wireless data signals, wherein the damping circuit includes at least a damping transistor that is configured to receive, from a transmitter controller, a damping signal for switching the damping transistor to control damping during transmission of the ASK wireless data signals;
• and
• a filter circuit including, at least, a filter capacitor and a filter inductor, the filter circuit configured for optimization based on a filter quality factor.

A listener for a Near-Field Communications Direct Charge (NFC-DC) system comprising:

• a transmitter antenna configured to couple with at least one other antenna and transmit alternating current (AC) wireless signals to the at least one other antenna, the AC wireless signals including wireless power signals and amplitude shift keying (ASK) wireless data signals;
• a transmitter controller that is configured to (i) provide a driving signal for driving the transmitter antenna based on an operating frequency for the NFC-DC system and (ii) perform one or more of encoding the ASK wireless data signals, decoding the ASK wireless data signals, receiving the ASK wireless data signals, or transmitting the ASK wireless data signals;
• and
• an amplifier, the amplifier including:
• at least one transistor that is configured to receive the driving signal at a gate of the at least one transistor and invert a direct current (DC) input power signal to generate the AC wireless signals at the operating frequency, and
• a damping circuit configured for damping the AC wireless signals during transmission of the ASK wireless data signals, the damping circuit including, at least, a damping transistor configured for receiving a damping signal from the transmitter controller, the damping signal configured for switching the damping transistor to control damping during transmission of the ASK wireless data signals.