Electronic devices with frequency noise processing and ripple reduction capabilities.

Abstract

Electronic devices configured for wireless power transmission to other electronic devices may include a wireless power transmission coil; an inverter configured to receive switching signals based on noise-reduced clock signals and output a corresponding AC current signal to the wireless power transmission coil; and a control circuit to generate that noise-reduced clock signal. The noise-reduced clock signal may have multiple frequency steps. The duty cycle of the switching signals may vary between at least two different frequency steps among multiple frequency steps to compensate for the different gain coefficients of the wireless power transmission process from one electronic device to another at at least two different frequency steps.

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