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.
Claims19
A radio frequency (RF) lens comprising:
- a first tile comprising a first plurality of radiators configured to generate and radiate electromagnetic waves;
- and
- a second tile comprising a second plurality of radiators configured to radiate electromagnetic waves, wherein said first and second tiles are positioned adjacent one another to form an array and operate in concert to wirelessly power a first device positioned away from the RF lens, wherein said first tile comprises a first plurality of locked-loop circuits each associated with a different one of the first plurality of radiators, and said second tile comprises a second plurality of locked-loop circuits each associated with a different one of the second plurality of radiators, wherein said first and second plurality of locked-loop circuits are locked to a same reference clock signal.
Dependencies are inferred from the claim text.