Smart RF lensing: efficient, dynamic and mobile wireless power transfer
AssigneeCalifornia Institute of Technology
InventorsKaushik Sengupta, Seyed Ali Hajimiri
Life of this patent
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Abstract
An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
Claims27
A radio frequency (RF) lens comprising:
- a plurality of radiators configured to radiate RF electromagnetic waves;
- at least one receiver configured to receive the RF electromagnetic waves scattered by one or more objects present in the path of the radiated RF electromagnetic waves;
- a controller configured to apply a scattering algorithm to data representative of the scattered RF electromagnetic waves and received by the receiver to construct a scattering behavior of the one or more objects, said controller further configured to vary phases of the RF electromagnetic waves to compensate for the constructed scattering behavior so as to wirelessly power a first device positioned away from the RF lens.
A radio frequency (RF) lens comprising:
- a plurality of radiators configured to radiate RF electromagnetic waves;
- at least one receiver configured to receive the RF electromagnetic waves scattered by one or more objects present in the path of the radiated RF electromagnetic waves;
- and
- a controller configured to apply a scattering algorithm to data representative of the scattered RF electromagnetic waves and received by the receiver to construct a scattering behavior of the one or more objects, wherein the first plurality of radiators are formed in a first tile adapted to be positioned directly next to a second tile comprising a second plurality of radiators, said first and second tiles being in electrical communication with one another and operating in concert to radiate electromagnetic waves to power a device.
Dependencies are inferred from the claim text.