Wireless non-radiative energy transfer
DC CAFCFirst Claim
Patent Images
1. A method of transferring electromagnetic energy comprising:
- providing a first electromagnetic resonator structure receiving energy from an external power supply, said first resonator structure having a first mode with a resonant frequency ω
1, an intrinsic loss rate Γ
1, and a first Q-factor Q1=ω
1/(2Γ
1),providing a second electromagnetic resonator structure being positioned distal from said first resonator structure and not electrically wired to the first resonator structure, said second resonator structure having a second mode with a resonant frequency ω
2, an intrinsic loss rate Γ
2, and a second Q-factor Q2=ω
2/(2Γ
2),transferring electromagnetic energy from said first resonator structure to said second resonator structure over a distance D that is smaller than each of the resonant wavelengths λ
1 and λ
2 corresponding to the resonant frequencies ω
1 and ω
2, respectively,wherein the electromagnetic resonator structures are designed to have Q1>
100 and Q2>
100.
3 Assignments
Litigations
1 Petition
Accused Products
Abstract
The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.
1064 Citations
70 Claims
-
1. A method of transferring electromagnetic energy comprising:
-
providing a first electromagnetic resonator structure receiving energy from an external power supply, said first resonator structure having a first mode with a resonant frequency ω
1, an intrinsic loss rate Γ
1, and a first Q-factor Q1=ω
1/(2Γ
1),providing a second electromagnetic resonator structure being positioned distal from said first resonator structure and not electrically wired to the first resonator structure, said second resonator structure having a second mode with a resonant frequency ω
2, an intrinsic loss rate Γ
2, and a second Q-factor Q2=ω
2/(2Γ
2),transferring electromagnetic energy from said first resonator structure to said second resonator structure over a distance D that is smaller than each of the resonant wavelengths λ
1 and λ
2 corresponding to the resonant frequencies ω
1 and ω
2, respectively,wherein the electromagnetic resonator structures are designed to have Q1>
100 and Q2>
100. - View Dependent Claims (2, 3, 4, 5, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 58, 61, 62, 63, 67, 69)
-
-
6. An electromagnetic energy transfer system comprising:
-
a first electromagnetic resonator structure receiving energy from an external power supply, said first resonator structure having a first mode with a resonant frequency ω
1, an intrinsic loss rate Γ
1, and a first Q-factor Q1ω
1/(2Γ
1), anda second electromagnetic resonator structure being positioned distal from said first resonator structure and not electrically wired to the first resonator structure, said second resonator structure having a second mode having a resonant frequency ω
2, said second resonator structure having a second mode with a resonant frequency ω
2, an intrinsic loss rate Γ
2, and a second Q-factor Q2=ω
2/(2Γ
2),wherein said first resonator transfers electromagnetic energy to said second resonator over a distance D that is smaller than each of the resonant wavelengths λ
1 and λ
2 corresponding to the resonant frequencies w1 and ω
2, respectively,wherein the electromagnetic resonator structures are designed to have Q1>
100 and Q2>
100. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59, 60, 64, 65, 66, 68, 70)
-
Specification