Malek Ramezani

Petru Emanuel Stingu

Ruwanga Dassanayake

Kenneth L Moore

Kenneth Moore

In an embodiment, a wireless power transmitter includes: a master transmitter resonant tank configured to wirelessly transmit power to a receiver resonant tank; a master transmitter driver configured to drive the master transmitter resonant tank; a slave transmitter resonant tank; a slave transmitter driver configured to drive the slave transmitter resonant tank; and a controller configured to adjust an impedance seen by the master transmitter resonant tank by controlling the slave transmitter driver, where controlling the slave transmitter driver includes adjusting a phase angle between a slave transmitter current flowing through the slave transmitter resonant tank and a master transmitter current flowing through the master transmitter resonant tank or adjusting a slave supply voltage of the slave transmitter driver.

Wireless power transmitter and receiver

In an embodiment a charging box includes a bottom surface parallel to a first axis, a driver, a switch matrix and a plurality of transmitting coils, each of the plurality of transmitting coils being wrapped around a second axis that is orthogonal to the first axis, wherein the driver is electrically connected to the switch matrix and the plurality of transmitting coils, wherein the switch matrix is configured to determine a power distribution of the plurality of transmitting coils by transmitting a ping to a mobile device and receiving a feedback from the mobile device, to select, based on a ping and feedback process, a pair of transmitting coils that transmits the most power and connect the determined pair of transmitting coils in series, and wherein the charging box is configured to wirelessly transmit power to the mobile device via the selected transmitting coils.

Growing community of inventors

Lynnwood, WA, United States of America

Malek Ramezani