Microwave wireless charger with focusing of microwave field
First Claim
1. A method of performing wireless power transmission by a power transmitter, the method comprising:
- determining angular coordinates of the power transmitter in relation to a position of at least one power receiver;
determining a distance between the at least one power receiver and the power transmitter based on the determined angular coordinates by using a focused microwave field;
determining the position of the at least one power receiver based on the determined angular coordinates and the determined distance; and
transmitting power by focusing a microwave field to the determined position of the at least one power receiver,wherein, if a number of at least one power receiver is at least two, transmitting the power comprises simultaneously charging the at least two power receivers by multi-focusing the microwave field to positions of the at least two power receivers.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is an apparatus and method for wirelessly transmitting power to power receivers from a power transmitter. The present disclosure provides a rational search procedure for locations of the power receivers, and provides a function of simultaneously charging multiple receivers using microwave multi-focusing. The wireless power transmission method performed by a power transmitter includes determining angular coordinates of the power transmitter in relation to a position of at least one power receiver; determining a distance between the at least one power receiver and the power transmitter based on the determined angular coordinates by using a focused microwave field; determining a location of the at least one power receiver based on the determined angular coordinates and the distance; and wirelessly transmitting power by focusing the microwave field to the determined location of the at least one power receiver.
19 Citations
20 Claims
-
1. A method of performing wireless power transmission by a power transmitter, the method comprising:
-
determining angular coordinates of the power transmitter in relation to a position of at least one power receiver; determining a distance between the at least one power receiver and the power transmitter based on the determined angular coordinates by using a focused microwave field; determining the position of the at least one power receiver based on the determined angular coordinates and the determined distance; and transmitting power by focusing a microwave field to the determined position of the at least one power receiver, wherein, if a number of at least one power receiver is at least two, transmitting the power comprises simultaneously charging the at least two power receivers by multi-focusing the microwave field to positions of the at least two power receivers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A power transmitter for performing power transmission, the power transmitter comprising:
-
at least one power transmitter antenna array configured to generate a microwave field; and a controller configured to determine angular coordinates of the power transmitter in relation to a position of at least one power receiver, determining a distance between the at least one power receiver and the power transmitter based on the determined angular coordinates by using a focused microwave field, determining the position of the at least one power receiver based on the determined angular coordinates and the determined distance, and wirelessly transmitting power by focusing a microwave field to the determined position of the at least one power receiver, wherein, if a number of at least one power receiver is at least two, the controller is configured to simultaneously charge the at least two power receivers by multi-focusing the microwave field to positions of the at least two power receivers. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A transmitter antenna array for generating a microwave field, the transmitter antenna array comprising:
-
a first printed circuit board (PCB) and a second PCB, which are stacked without electric connection, wherein the first PCB carries microwave input, power dividing circuitry, phase shifters, microstrip or coplanar array element excitation circuitry on a first side, and couples with a slot aperture on a second side, wherein the second PCB carries a circularly polarized patch excited by the slot aperture coupled to microstrip or coplanar excitation circuitry, and wherein the first PCB comprises a double-sided, low-loss, high frequency PCB, and the second PCB comprises a single-sided PCB. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification