Electromagnetic transmission apparatus

• US 8,674,553 B2
• Filed: 04/12/2011
• Issued: 03/18/2014
• Est. Priority Date: 08/19/2010
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Pu, Ta Chun, Wu, Chun Yih, Lin, Hung Hsuan
• Primary Examiner(s): Deberadinis, Robert L.
• Application Number:
  US13/084,803
• Publication Number:
  US 20120043824A1
• Time in Patent Office: 1,071 Days
• Field of Search: 307/104
• US Class Current: 307/104
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H04B 5/26 using coils

Abstract

An electromagnetic transmission apparatus comprises a plurality of electromagnetic coupling elements, wherein each electromagnetic coupling element has at least one resonant structure. The plurality of electromagnetic coupling elements are arranged that when the electromagnetic transmission apparatus is operated within a specific frequency band, an electromagnetic coupling device near the electromagnetic transmission apparatus within an electromagnetic distance can electromagnetically couple with the electromagnetic transmission apparatus by near-field coupling, and the electromagnetic wave of the electromagnetically coupling propagates along with the arrangement direction of the plurality of electromagnetic coupling elements.

Claims

1. An electromagnetic transmission apparatus, comprising:

a plurality of electromagnetic coupling elements, wherein each electromagnetic coupling element comprises at least one resonant structure, each electromagnetic coupling element is connected to an adjacent electromagnetic coupling element in a direct-current open-circuit manner, and each electromagnetic coupling element overlaps with an adjacent electromagnetic coupling element to form a coupling area;

wherein the plurality of electromagnetic coupling elements are arranged that when the electromagnetic transmission apparatus is operated within a specific frequency band, an electromagnetic coupling device near the electromagnetic transmission apparatus within an electromagnetic distance is electromagnetically coupled with the electromagnetic transmission apparatus by near-field coupling, and the electromagnetic wave of the electromagnetically coupling propagates along with the arrangement direction of the plurality of electromagnetic coupling elements.

2. The electromagnetic transmission apparatus of claim 1, wherein the plurality of electromagnetic coupling elements are disposed on a layered dielectric material.

3. The electromagnetic transmission apparatus of claim 2, wherein the plurality of electromagnetic coupling elements are disposed on the same side of a layered dielectric material.

4. The electromagnetic transmission apparatus of claim 2, wherein the plurality of electromagnetic coupling elements are disposed on different sides of a layered dielectric material.

5. The electromagnetic transmission apparatus of claim 2, wherein the layered dielectric material is in a plate shape, and the plurality of electromagnetic coupling elements are disposed on the layered dielectric material along the surface of the layered dielectric material.

6. The electromagnetic transmission apparatus of claim 2, wherein the layered dielectric material is in a stripe shape, and the plurality of electromagnetic coupling elements are disposed on the layered dielectric along the direction of the layered dielectric material.

7. The electromagnetic transmission apparatus of claim 2, wherein the layered dielectric material is a bendable material such that the plurality of electromagnetic coupling elements are disposed on a curvature surface.

8. The electromagnetic transmission apparatus of claim 1, wherein the plurality of electromagnetic coupling elements form a close loop, and each electromagnetic coupling element constitutes at least two coupling areas.

9. The electromagnetic transmission apparatus of claim 1, wherein the plurality of electromagnetic coupling elements form an open loop, each of the electromagnetic coupling elements at each end of the open loop constitutes at least one coupling areas, and each of the remaining electromagnetic coupling elements constitutes at least two coupling areas.

10. The electromagnetic transmission apparatus of claim 1, wherein the electromagnetic distance is shorter than one fifth of the wavelength of the specific frequency band.

11. The electromagnetic transmission apparatus of claim 1, wherein the electromagnetic coupling device is connected to a transceiver, a radio frequency identification tag or a charging module.

12. The electromagnetic transmission apparatus of claim 1, further comprising:

at least a magnetic material device, which is attractable to an electromagnetic coupling device with a magnetic material device.

13. The electromagnetic transmission apparatus of claim 1, further comprising:

a conductor part, which is configured to be connected to a transmission line for a direct energy feeding or energy retrieving.

14. An electromagnetic transmission apparatus, comprising:

a plurality of electromagnetic coupling elements, wherein each electromagnetic coupling element comprises at least one resonant structure, each electromagnetic coupling element is connected to an adjacent electromagnetic coupling element in a direct-current open-circuit manner, and each electromagnetic coupling element overlaps with an adjacent electromagnetic coupling element to form a coupling area;

wherein the plurality of electromagnetic coupling elements are arranged that when the electromagnetic transmission apparatus is operated within a specific frequency band, the electromagnetic wave of an electromagnetic coupling device near the electromagnetic transmission apparatus within an electromagnetic distance propagates to another electromagnetic coupling device near the electromagnetic transmission apparatus within the electromagnetic distance by near-field coupling.

15. The electromagnetic transmission apparatus of claim 14, wherein the plurality of electromagnetic coupling elements are disposed on a layered dielectric material.

16. The electromagnetic transmission apparatus of claim 15, wherein the plurality of electromagnetic coupling elements are disposed on the same side of a layered dielectric material.

17. The electromagnetic transmission apparatus of claim 15, wherein the plurality of electromagnetic coupling elements are disposed on different sides of a layered dielectric material.

18. The electromagnetic transmission apparatus of claim 15, wherein the layered dielectric material is in a plate shape, and the plurality of electromagnetic coupling elements are disposed on the layered dielectric material along the direction of the layered dielectric material.

19. The electromagnetic transmission apparatus of claim 15, wherein the layered dielectric material is in a stripe shape, and the plurality of electromagnetic coupling elements are disposed on the layered dielectric material along the direction of the layered dielectric material.

20. The electromagnetic transmission apparatus of claim 15, wherein the layered dielectric material is a bendable material such that the plurality of electromagnetic coupling elements are disposed on a curvature surface.

21. The electromagnetic transmission apparatus of claim 14, wherein the plurality of electromagnetic coupling elements form a close loop, and each electromagnetic coupling element constitutes at least two coupling areas.

22. The electromagnetic transmission apparatus of claim 14, wherein the plurality of electromagnetic coupling elements form an open loop, each of the electromagnetic coupling elements at each end of the open loop constitutes at least one coupling areas, and each of the remaining electromagnetic coupling elements constitutes at least two coupling areas.

23. The electromagnetic transmission apparatus of claim 14, wherein the electromagnetic distance is shorter than one fifth of the wavelength of the specific frequency band.

24. The electromagnetic transmission apparatus of claim 14, wherein the distance between the electromagnetic coupling devices is longer than one tenth of the wavelength of the specific frequency band.

25. The electromagnetic transmission apparatus of claim 14, wherein each of the electromagnetic coupling devices is connected to a transceiver, a radio frequency identification tag or a charging module.

26. The electromagnetic transmission apparatus of claim 14, further comprising:

at least a magnetic material device, which is attractable to an electromagnetic coupling device with a magnetic material device.

27. The electromagnetic transmission apparatus of claim 14, further comprising:

a conductor part, which is configured to be connected to a transmission line for a direct energy feeding or energy retrieving.