PROTECTION DEVICE AND METHOD FOR POWER TRANSMITTER
摘要
Aspects of a protection circuit and method are disclosed. A transmit circuit generates a power transmit signal for powering the transmit antenna to generate a wireless field sufficient for wirelessly charging a device. A detection circuit senses a strength of an electromagnetic field received by the transmit antenna and further configured to generate an sense signal indicating the strength of the electromagnetic field received by the transmit antenna. A power control circuit controls a switch based at least partly on the sense signal. The power control circuit can attenuate an electrical coupling between the transmit antenna and the transmit circuit such that the received electromagnetic field is inhibited from damaging the transmit antenna or the transmit circuit.
申请公布号
WO2014039195(A1)
申请公布日期
2014.03.13
申请号
WO2013US53845
申请日期
2013.08.06
申请人
QUALCOMM INCORPORATED
发明人
TSENG, RYAN;KASTURI, SREENIVAS;KALLAL, EDWARD;RADOVIC, MILORAD;VON NOVAK, WILLIAM H.