Device and method for combined signal transmission or for combined signal transmission and energy transmission

• US 10,205,243 B2
• Filed: 08/22/2014
• Issued: 02/12/2019
• Est. Priority Date: 08/23/2013
• Status: Active Grant

• Current Assignee: Molex Technologies GmbH
• Original Assignee: Laird Dabendorf GmbH (Laird PLC)
• Inventors: Holz, Rainer, Scholz, Frank, Al-Mughalles, Ahmed
• Primary Examiner(s): Maung, Nay A
• Assistant Examiner(s): Soltanzadeh, Maryam
• Application Number:
  US14/913,743
• Publication Number:
  US 20160204832A1
• Time in Patent Office: 1,635 Days
• CPC Class Codes: H01Q 1/3291 mounted in or on other locations inside the vehicle or vehicle body
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 1/52 Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure absorbing means H01Q17/00
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 9/40 Element having extended radiating surface
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H04B 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A method and a device for combined signal transmission or for combined signal transmission and energy transfer, in particular a portable electronic terminal. The device has at least one coil structure for producing a first electromagnetic field for energy transfer or for signal transmission, wherein the device also has at least one antenna structure for additional signal transmission. The antenna structure has a first partial structure and a second partial structure. The first partial structure is designed and/or is arranged in relation to the second partial structure in such a way that signals in a first frequency range can be received and transmitted by the antenna structure. At least the first partial structure is arranged adjacent to the at least one coil structure in a projection plane oriented perpendicular to a central axis of the coil structure.

Claims

1. A device for combined signal transmission or for combined signal and energy transmission, the device comprising:

at least one winding structure for generating a first electromagnetic field for transmitting energy or for transmitting signals, said at least one winding structure having a central axis being a symmetrical axis of said winding structure;

at least one antenna structure for transmitting further signals, said antenna structure having a first part structure and a second part structure, said first part structure being disposed opposite said second part structure such that signals can be received and transmitted in a first frequency range by way of said at least one antenna structure;

wherein said first part structure is arranged adjacent said at least one winding structure in a projection plane that is oriented perpendicular to said central axis of said at least one winding structure; and

a damping structure for damping the first electromagnetic field, said damping structure overlapping at least in part said at least one winding structure in the projection plane, said damping structure forming at least part of said second part structure of said antenna structure.

2. The device according to claim 1, wherein said damping structure and said antenna structure are arranged on a common circuit board.

3. The device according to claim 1, wherein said second part structure or said first part structure forms a ground surface of said antenna structure.

4. The device according to claim 1, wherein said damping structure forms at least in part said second part structure of said antenna structure and wherein said second part structure or said first part structure forms a ground surface of said antenna structure.

5. The device according to claim 1, wherein said first part structure is a frame disposed to completely surround said second part structure.

6. The device according to claim 5, wherein a gap between an inner edge of said first part structure and an outer edge of said second part structure varies along an inner edge of said first part structure.

7. The device according to claim 5, wherein:

an outer edge of said first part structure has a substantially rectangular contour;

a gap formed between an inner edge of said first part structure and an outer edge of said second part structure, in a part region that extends along a longitudinal side of said first part structure, is selected such that signals may be received and transmitted in a first part frequency range;

the gap formed between the inner edge of said first part structure and the outer edge of said second part structure, in a part region that extends along an end face of said first part structure, is selected such that signals may be received and transmitted in a further part frequency range.

8. The device according to claim 5, wherein said first part structure is formed with at least one protrusion along an inner edge thereof and/or said second part structure is formed with at least one protrusion along an outer edge thereof.

9. The device according to claim 1, wherein said first part structure and said second part structure are galvanically connected or connected for signal conduction.

10. The device according to claim 1, wherein said damping structure forms at least in part said second part structure of said antenna structure and wherein said first part structure and said second part structure are galvanically connected or connected for signal conduction.

11. The device according to claim 1, wherein said second part structure or said first part structure forms a ground surface of said antenna structure and wherein said first part structure and said second part structure are galvanically connected or connected for signal conduction.

12. The device according to claim 1, wherein:

said damping structure forms at least in part said second part structure of said antenna structure;

said second part structure or said first part structure forms a ground surface of said antenna structure; and

said first part structure and said second part structure are galvanically connected or connected for signal conduction.

13. The device according to claim 1, wherein said first part structure of said antenna structure is cup-shaped.

14. The device according to claim 1, wherein said damping structure is, at least in part, a comb-shaped structure.

15. The device according to claim 1, wherein said second part structure or said first part structure forms a ground surface of said antenna structure and wherein said damping structure is, at least in part, a comb-shaped structure.

16. The device according to claim 1, wherein said damping structure comprises at least two part sections and at least one capacitive element electrically connecting said at least two part sections.

17. The device according to claim 1, wherein said antenna structure comprises at least one further part structure opposite said second part structure disposed so as to enable signals to be received and transmitted in a second frequency range by way of said further part structure, wherein said further part structure is disposed adjacent said at least one winding structure in the projection plane.

18. A method for combined signal transmission or for combined signal and energy transmission, the method comprising:

generating with at least one winding structure an electromagnetic field for transferring energy or for transmitting signals, the winding structure having a central axis being a symmetrical axis of the winding structure;

receiving or transmitting signals via an antenna structure, the antenna structure having a first part structure and a second part structure, wherein the first part structure is disposed opposite the second part structure in such a manner that signals can be received and transmitted in a first frequency range by way of the antenna structure;

wherein at least the first part structure is arranged adjacent the at least one winding structure in a projection plane that is oriented perpendicular to the central axis of the winding structure; and

damping the first electromagnetic field with a damping structure that overlaps at least in part the at least one winding structure in the projection plane, the damping structure forming at least part of the second part structure of the antenna structure.

19. The method according to claim 18, which comprises transmitting to a portable electronic terminal device.