IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0649973
(2009-12-30)
|
등록번호 |
US-8400024
(2013-03-19)
|
발명자
/ 주소 |
- Joannopoulos, John D.
- Karalis, Aristeidis
- Soljacic, Marin
|
출원인 / 주소 |
- Massachusetts Institute of Technology
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
125 인용 특허 :
76 |
초록
▼
Described herein are embodiments of transferring electromagnetic energy that includes a first electromagnetic resonator receiving energy from an external power supply, said first resonator having a resonant frequency ω1, an intrinsic loss rate Γ1, and a first Q-factor Q1=ω1L1/(R1ohm+R1rad), generati
Described herein are embodiments of transferring electromagnetic energy that includes a first electromagnetic resonator receiving energy from an external power supply, said first resonator having a resonant frequency ω1, an intrinsic loss rate Γ1, and a first Q-factor Q1=ω1L1/(R1ohm+R1rad), generating an oscillating near field region, a second electromagnetic resonator being positioned at variable distances from said first resonator and not electrically wired to said first resonator, said second resonator having a resonant frequency ω2, an intrinsic loss rate Γ2, and a second Q-factor Q2=ω2L2/(R2ohm+R2rad). Electromagnetic energy may be transferred from said first resonator to said second resonator over a variable distance D that may be within the near-field region of the first resonator structure, and wherein R1ohmR1rad, and R2ohmR2rad.
대표청구항
▼
1. A method of transferring electromagnetic energy comprising: providing a first electromagnetic resonator receiving energy from a power supply, said first electromagnetic resonator having a resonant frequency ω1, an intrinsic loss rate Γ1, an inductance L1, an ohmic component of resistance R1ohm, a
1. A method of transferring electromagnetic energy comprising: providing a first electromagnetic resonator receiving energy from a power supply, said first electromagnetic resonator having a resonant frequency ω1, an intrinsic loss rate Γ1, an inductance L1, an ohmic component of resistance R1ohm, a radiative component of resistance R1rad, and a first Q-factor Q1=ω1L1/(R1ohm+R1rad), and generating a near field region comprising a temporally oscillating magnetic field;providing a second electromagnetic resonator being positioned at variable distances from said first electromagnetic resonator and not electrically wired to said first electromagnetic resonator, said second electromagnetic resonator having a resonant frequency ω2, an intrinsic loss rate Γ2, an inductance L2, an ohmic component of resistance R2ohm, a radiative component of resistance R2rad, and a second Q-factor Q2=ω2L2/(R2ohm+R2rad); andwirelessly transferring electromagnetic energy from said first electromagnetic resonator to said second electromagnetic resonator over a variable distance D as the second electromagnetic resonator moves freely within the near-field region, and wherein R1ohm>R1rad, and R2ohm>R2rad and at least one of Q1 and Q2 is greater than 100. 2. The method of claim 1, wherein the distance between the resonators is greater than 5 cm. 3. The method of claim 1, wherein the distance between the resonators is greater than 10 cm. 4. The method of claim 1, wherein the distance between the resonators is larger than a characteristic size of the smaller of the first electromagnetic resonator and the second electromagnetic resonator. 5. The method of claim 1, wherein each resonator comprises an electrical conductor shaped into one or more loops wound in substantially a single plane circumscribing a substantially planar area. 6. The method of claim 5, wherein the loops of the electrical conductors of each of the first electromagnetic resonator and the second electromagnetic resonator are in substantially the same plane. 7. The method of claim 5, wherein a line drawn from the center of the first electromagnetic resonator to the center of the second electromagnetic resonator is substantially normal to the circumscribed planar area of each resonator. 8. The method of claim 5, wherein a line drawn from the center of the first electromagnetic resonator to the center of the second electromagnetic resonator is substantially parallel to the circumscribed planar area of each resonator. 9. The method of claim 5, wherein a line drawn from the center of the first electromagnetic resonator to the center of the second electromagnetic resonator forms a different angle to the surface area circumscribed by the first electromagnetic resonator than to the circumscribed planar area of each resonator. 10. The method of claim 1, wherein Q1 and Q2 are each greater than 100. 11. The method of claim 1, wherein √{square root over (Q1Q2)}>100. 12. A system of transferring electromagnetic energy comprising: a first electromagnetic resonator receiving energy from a power supply, said first electromagnetic resonator having a resonant frequency ω1, an intrinsic loss rate Γ1, an inductance L1, an ohmic component of resistance R1ohm, a radiative component of resistance R1rad, and a first Q-factor Q1=ω1L1/(R1ohm+R1rad), and generating a near field region comprising a temporally oscillating magnetic field;a second electromagnetic resonator being positioned at variable distances from said first electromagnetic resonator and not electrically wired to said first electromagnetic resonator, said second electromagnetic resonator having a resonant frequency ω2, an intrinsic loss rate Γ2, an inductance L2, an ohmic component of resistance R2ohm, a radiative component of resistance R2rad, and a second Q-factor Q2=ω2L2/(R2ohm+R2rad),wherein the first and second electromagnetic resonators are coupled to wirelessly transfer electromagnetic energy from said first electromagnetic resonator to said second electromagnetic resonator over a variable distance D as the second electromagnetic resonator moves freely within the near-field region, and wherein R1ohm>R1rad, and R2ohm>R2rad and at least one of Q1 and Q2 is greater than 100. 13. The system of claim 12, wherein the distance between the resonators is greater than 5 cm. 14. The system of claim 12, wherein the distance between the resonators is greater than 10 cm. 15. The system of claim 12, wherein the distance between the resonators is larger than a characteristic size of the smaller of the first electromagnetic resonator and the second electromagnetic resonator. 16. The system of claim 12, wherein each resonator comprises an electrical conductor shaped into one or more loops wound in substantially a single plane circumscribing a substantially planar area. 17. The system of claim 16, wherein the loops of the electrical conductors of each of the first electromagnetic resonator and the second electromagnetic resonator are in substantially the same plane. 18. The system of claim 16, wherein a line drawn from the center of the first electromagnetic resonator to the center of the second electromagnetic resonator is substantially normal to the circumscribed planar area of each resonator. 19. The system of claim 16, wherein a line drawn from the center of the first electromagnetic resonator to the center of the second electromagnetic resonator is substantially parallel to the circumscribed planar area of each resonator. 20. The system of claim 16, wherein a line drawn from the center of the first electromagnetic resonator to the center of the second electromagnetic resonator forms a different angle to the surface area circumscribed by the first electromagnetic resonator than to the circumscribed planar area of each resonator. 21. The system of claim 12, wherein Q1 and Q2 are greater than 100. 22. The system of claim 12, wherein √{square root over (Q1Q2)}>100.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.