Artificial magnetic structures for wireless power transfer
First Claim
1. A system, comprising:
- a first resonator coupled to an energy source;
a second resonator located a distance from the first resonator and coupled to the first resonator to provide near-field wireless energy transfer between the first resonator and the second resonator, wherein the first resonator and the second resonator are non-radiative structures having a resonant frequency; and
an artificial magnetic conductor (AMC) having the resonant frequency and arranged within the system to shape the near-field of at least one of the first resonator and the second resonator, wherein the AMC includes a layer of unit cells to arranged in a periodic pattern enabling the AMC to reflect the near-field, wherein each unit cell includes a plurality of electronic components.
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Abstract
A system includes a first resonator coupled to an energy source and a second resonator located a distance from the first resonator and coupled to the first resonator to provide near-field wireless energy transfer between the first resonator and the second resonator. The first resonator and the second resonator are non-radiative structures having a resonant frequency. The system also includes an artificial magnetic conductor (AMC) having the resonant frequency and arranged within the system to shape the near-field of at least one of the first resonator and the second resonator. The AMC includes a layer of unit cells arranged in a periodic pattern enabling the AMC to reflect the near-field. Each unit cell of the AMC includes a plurality of electronic components.
7 Citations
16 Claims
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1. A system, comprising:
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a first resonator coupled to an energy source; a second resonator located a distance from the first resonator and coupled to the first resonator to provide near-field wireless energy transfer between the first resonator and the second resonator, wherein the first resonator and the second resonator are non-radiative structures having a resonant frequency; and an artificial magnetic conductor (AMC) having the resonant frequency and arranged within the system to shape the near-field of at least one of the first resonator and the second resonator, wherein the AMC includes a layer of unit cells to arranged in a periodic pattern enabling the AMC to reflect the near-field, wherein each unit cell includes a plurality of electronic components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for wireless transfer of energy, comprising:
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providing a first resonator for coupling to a second resonator to provide near-field wireless energy transfer between the first resonator and the second resonator, wherein the first resonator and the second resonator are non-radiative structures having a resonant frequency within a range from 20 kHz to 1 MHz; and arranging an artificial magnetic conductor (AMC) having the resonant frequency within a distance less than ½
of a wavelength of the resonant frequency from the first resonator on a direction opposite to a direction of the energy transfer to shape the near-field of the first resonator, wherein the AMC includes a layer of unit cells arranged in a periodic pattern enabling the AMC to reflect the near-field, wherein each unit cell includes a plurality of electronic components. - View Dependent Claims (15, 16)
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Specification