Quantized waveform power transmission

A wireless power transmitter unit, comprising:

• a transmit coil and a plurality of capacitors each connected in series with the transmit coil to form a resonant tank circuit;
• a quantized waveform generator comprising a plurality of amplifiers and a pulse generator configured to independently drive each of the plurality of amplifiers with a plurality of pulse sequences that generate to generate a quantized waveform, wherein the quantized waveform is input at the resonant tank circuit and induces to collectively induce an inductive power transmission at the resonant tank circuit from which one or more harmonic emissions are absent, having a selected harmonic emission spectrum in which one or more predetermined harmonic emissions are substantially eliminated, wherein the quantized waveform is delivered to only one end of the resonant tank circuit at given time while the other end of the resonant tank circuit is grounded.

A method, comprising:

• in a wireless power transmitter unit comprising a resonant tank circuit and a quantized waveform generator having a single-ended output coupled to a first end of the resonant tank circuit:
• generating, with the quantized waveform generator, a predetermined quantized waveform that, when delivered to the resonant tank circuit, causes the resonant tank circuit to emit wireless power signals having a selected harmonic emission spectrum in which one or more predetermined harmonic emissions are substantially eliminated.