Wireless charging device
First Claim
1. A charging device for wireless charging at least one electric device using electromagnetic radiation, the device comprising:
- a housing comprising;
a charging zone; and
an antenna arrangement which comprises at least one radiating antenna, the antenna arrangement being operable to emit the electromagnetic radiation to provide a maximal intensity of electromagnetic radiation within at least a part of said charging zone;
said housing is substantially hollow defining an inner cavity for propagation of the electromagnetic radiation from said antenna arrangement;
said housing comprises an inner surface thereof configured to define said inner cavity, the geometry and material composition of said inner surface being selected to define a general propagation path for the electromagnetic radiation from said antenna arrangement towards said charging zone inside said housing such that the inner cavity of the housing operates as a waveguide for directionally guiding the electromagnetic radiation to said charging zone and enabling the creation of a volume of maximal intensity of the electromagnetic radiation within at least a part of said charging zone, while substantially preventing the electromagnetic radiation from escaping the housing.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides wireless charging techniques and devices for charging electronic device(s) within a closed space defined by a substantially hollow housing containing an antenna arrangement and configured to define an inner cavity for propagation of electromagnetic radiation from the antenna arrangement. The housing has an inner surface, encompassing the inner cavity, which geometry and material composition selected to define a general propagation path for the predetermined electromagnetic radiation from the antenna arrangement towards a charging zone. The inner cavity of the housing operates as a waveguide for directionally guiding the electromagnetic radiation to the charging zone and providing substantially maximal intensity of the electromagnetic radiation within the charging zone.
13 Citations
18 Claims
-
1. A charging device for wireless charging at least one electric device using electromagnetic radiation, the device comprising:
-
a housing comprising; a charging zone; and an antenna arrangement which comprises at least one radiating antenna, the antenna arrangement being operable to emit the electromagnetic radiation to provide a maximal intensity of electromagnetic radiation within at least a part of said charging zone; said housing is substantially hollow defining an inner cavity for propagation of the electromagnetic radiation from said antenna arrangement; said housing comprises an inner surface thereof configured to define said inner cavity, the geometry and material composition of said inner surface being selected to define a general propagation path for the electromagnetic radiation from said antenna arrangement towards said charging zone inside said housing such that the inner cavity of the housing operates as a waveguide for directionally guiding the electromagnetic radiation to said charging zone and enabling the creation of a volume of maximal intensity of the electromagnetic radiation within at least a part of said charging zone, while substantially preventing the electromagnetic radiation from escaping the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A charging device for wireless charging at least one electric device using radio frequency (RF) radiation, the device comprising:
-
a housing comprising; a charging zone; and an antenna arrangement which comprises a plurality of antennas said plurality of antennas are operable by a switching unit to provide a maximal intensity of electromagnetic radiation within at least a part of said charging zone; and said antenna arrangement is associated with a frequency controller to thereby enable controllable variation of a frequency of the electromagnetic radiation, thereby providing at least a partial overlap between the volume of the maximal intensity of the electromagnetic radiation and at least a part of the charging zone, said housing is substantially hollow defining an inner cavity for propagation of electromagnetic radiation from said antenna arrangement; and said housing comprises an inner surface thereof configured to define said inner cavity, the geometry and material composition of said inner surface being selected to define a general propagation path for the electromagnetic radiation from said antenna arrangement towards the charging zone inside said housing such that said inner cavity operates as a waveguide for directionally guiding the electromagnetic radiation to said charging zone and enabling the creation of a volume of maximal intensity of the electromagnetic radiation within at least a part of said charging zone while substantially preventing the electromagnetic radiation from escaping said housing. - View Dependent Claims (16, 17)
-
-
18. A method for charging at least one electric device using radio frequency (RF) radiation, the method comprising:
-
providing a charging device comprising an antenna arrangement having a plurality of antennas and a charging zone; operating the antenna arrangement to generate electromagnetic radiation having frequency and phase selected to thereby create a volume of maximal intensity of the electromagnetic radiation within at least a part of the charging zone monitoring the radiation in a vicinity of the charging zone; and in response to the monitoring, carrying out at least one of the following;
(1) providing a phase shift between antennas of the antenna arrangement;
(2) controllably varying a frequency of the radiation to provide an optimal frequency of the radiation in the charging zone;
(3) selectively deactivating at least one antenna of the antenna arrangement.
-
Specification