Wireless charging system for using frequency control
AssigneeCenter for Integrated Smart Sensors Foundation
InventorsKyung Hak Lee, Young Ki Kim, Jae Hyun Choi, Hyun Wook Lee
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Abstract
Disclosed is a transmitter used for a wireless charging system. The transmitter includes a plurality of phase locked loops (PLLs) that outputs single-phase power signals, a plurality of antennas that transmits power signals transmitted from the plurality of PLLs to a receiver, and a controller that determines a specific frequency for the receiver based on a signal strength indication (RSSI) received from the receiver and allows output frequencies of the plurality of PLLs to be different from each other in a specific frequency band preset based on the specific frequency.
Claims13
A transmitter used for a wireless charging system, the transmitter comprising:
- a plurality of phase locked loops (PLLs) configured to output single-phase power signals;
- a plurality of antennas configured to transmit the power signals transmitted from the plurality of PLLs to a receiver;
- and
- a controller configured to determine a specific frequency for the receiver based on a signal strength indication (RSSI) received from the receiver and to allow output frequencies of the plurality of PLLs to be different from each other in a specific frequency band preset based on the specific frequency, wherein the output frequencies of the plurality of PLLs are different from each other in the specific frequency band without regard to an input frequency.
A transmitter used for a wireless charging system, the transmitter comprising:
- a plurality of phase locked loops (PLLs) configured to output single-phase power signals;
- a plurality of antennas configured to transmit the power signals transmitted from the plurality of PLLs to a plurality of receivers;
- and
- a controller configured to determine a specific frequency for each of the plurality of receivers based on a signal strength indication (RSSI) received from each of the plurality of receivers and to allow output frequencies of the plurality of PLLs to be different from each other in a specific frequency band preset based on the specific frequencies of the plurality of receivers, wherein the output frequencies of the plurality of PLLs are different from each other in the specific frequency band without regard to an input frequency.
Dependencies are inferred from the claim text.