Publisher's Synopsis
Inventive aspects include systems, methods, and apparatuses for detecting placement of a wireless power receiver in a charging region of a wireless power transmitter. For example, the apparatus may include a transmit circuit comprising a transmit coil and be configured to wirelessly transmit power via a wireless filed applied to the charging region to a receive coil of the receiver. The apparatus may also include a detection circuit configured to detect a characteristic waveform resulting from the field that is applied to the charging region or changed between the transmit and receive coils, in response to the receiver being placed in the charging region.
