Antenna transmission coupling arrangement

• US 5,711,014 A
• Filed: 12/29/1995
• Issued: 01/20/1998
• Est. Priority Date: 04/05/1993
• Status: Expired due to Term

• Current Assignee: Ambit Corporation, Antennatech LLC
• Original Assignee: Donald N. Halgren, Robert J. Crowley
• Inventors: Crowley, Robert J., Halgren, Donald N.
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): LE, THANH C
• Application Number:
  US08/581,065
• Time in Patent Office: 753 Days
• Field of Search: 455/89, 455/90, 455/117, 455/128, 455/129, 455/325, 455/345, 455/575, 379/437, 379/451, 379/446, 379/455, 379/58, 379/59, 343/702, 343/703, 343/720, 343/841, 361/814, 102/393
• US Class Current: 455/575.7
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H04B 1/3833 Hand-held transceivers
• CPC Class Codes: H04B 1/3877 Arrangements for enabling portable transceivers to be used in a fixed position, e.g. cradles or boosters

Abstract

The present invention comprises a docking system for connecting a portable communication device to a further signal transmission line. The portable communication device has an external radiative antenna. The docking system for the portable communication device comprises a shielded housing for receivably enclosing at least a portion of the external radiative antenna of the portable communication device. A coupling probe is mounted within the shielded housing for radiatively coupling the external antenna of the portable communication device and the further signal transmission line via radio frequency energy therebetween.

Claims

1. A docking system for capacitively connecting a portable communication device having an externally radiative antenna, to a further signal transmission line for effecting radio signal transmission therebetween, said system comprising:

a housing comprising an open section for receiving said portable communication device;

said housing including an RF capacitive coupling element in a separate shielding enclosure segregated from said open section of said housing, and connected to said further signal transmission line;

said separate shielding enclosure holding said RF coupling element offset and to one side of said externally radiative antenna of said portable communication device so as to permit radiative communication to said further signal transmission line via radio frequency energy therebetween.

2. The docking system as recited in claim 1, wherein said separate shielding enclosure includes an electrically conductive material.

3. The docking system as recited in claim 1, wherein a radio frequency absorbent material is arranged within said shielding enclosure.

4. The docking system as recited in claim 3, wherein said radio frequency absorbent material is ferrite.

5. The docking system as recited in claim 1 wherein said further signal transmission line comprises a further antenna located at a location remote from said shielding enclosure.

6. The docking system as recited in claim 5, wherein said shielding enclosure is articulable with respect to said further antenna.

7. The docking system as recited in claim 5, wherein said further signal transmission line comprises a coaxial electrical cable.

8. The docking system as recited in claim 5, wherein said portable communication device is a cellular telephone.

9. The docking system as recited in claim 5, wherein said shielding enclosure is attached to a support structure.

10. A method of capacitively coupling a portable communication device having an externally radiative antenna, to a signal transmission line for the purpose of effecting radio signal transmission therebetween, said method comprising the steps of:

arranging a housing including an open section for receipt of said portable communication device, said housing including an RF coupling element in a separate shielding enclosure segregated from said open section of said housing and connected to said signal transmission line;

mounting said coupling element in said separate shielding enclosure offset and to one side of said external radiative antenna when said portable communication device is placed at said open section of said housing; and

placing said externally radiative antenna of said portable communication device offset and to one side of said RF coupling element in said separate shielding enclosure so as to permit capacitive radiative communication between said externally radiative antenna of said portable communication device and said signal transmission line via said coupling element.

11. The method of coupling the portable communication device to the signal transmission line, as recited in claim 10, including the step of:

attaching a further antenna to said signal transmission line at a location remote from said housing.

12. The method of capacitively coupling the portable communication device to the signal transmission line, as recited in claim 11, including the step of:

energizing said portable communication device so as to effectuate capacitive transmission between said externally radiative antenna of said portable communication device, and said coupling plate attached to said signal transmission line.

13. The method of coupling the portable communication device to the signal transmission line, as recited in claim 12, including the steps of:

arranging said signal transmission line in a structure; and

articulating said shielding enclosure with respect to said structure to facilitate mating of said externally radiative antenna with respect to said shielding enclosure.

14. The method of coupling the portable communication device to the signal transmission line as recited in claim 13, wherein said portable communication device comprises a cellular telephone.

15. A system for capacitively coupling a communication device having an externally radiative antenna, to a separate signal transmission line, said system comprising:

a housing having an open section for receiving said communication device, said housing also having a shielded enclosure arranged to confine

a coupling plate mounted within said shielded enclosure, which plate is also in electrical communication with said separate signal transmission line;

said coupling plate arranged to radiatively transfer radio frequency energy between an externally radiative antenna of said communication device placed a spaced distance outside of said enclosure and said separate signal transmission line, said externally radiative antenna arranged offset and to one side of said coupling plate in said shielded enclosure section, to effectuate capacitive coupling thereof when said communication device is energized.

16. The coupling system as recited in claim 15, wherein said separate signal transmission line also comprises a further radiative antenna disposed remotely with respect to said shielded enclosure.

17. A signal transmission system for the convenient radiative coupling of an electronic communication device having an externally radiative antenna, to a separate signal transmission line connected therewith, said system comprising:

a radiative coupling element connected in communication with said separate signal transmission line, said coupling element comprising an ungrounded capacitive coupling probe or plate;

a housing structure having an open section, arranged for receipt of said electronic communication devices, said housing including said radiative coupling element arranged in a separate shielding enclosure segregated from said open section of said housing and connected to said signal transmission line, said external radiative antenna of said portable electronic communication device being arranged offset and to one side of said ungrounded capacitive coupling plate or probe, to permit capacitive coupling between said externally radiative antenna of said portable communication device and said ungrounded capacitive coupling probe or plate for subsequent electronic transmission with respect to said separate signal transmission line.

18. The system as recited in claim 17, wherein said transmission line is comprised of a coaxial cable.

19. The system as recited in claim 17, wherein said externally radiative antenna and said coupling element are disposed in a generally parallel relationship.

20. The system as recited in claim 17, wherein said housing structure at least partially encloses said externally radiative antenna of the electronic communication device arranged therewith.

21. The system as recited in claim 17, wherein said housing structure includes an electrically conductive material.

22. The system as recited in claim 17, wherein said ungrounded coupling probe or plate is supported in a shielded arrangement with respect to said housing structure.

23. The system as recited in claim 17, wherein at least a portion of said housing structure is tuned for resonant operation.

24. The system as recited in claim 17, wherein said signal transmission line includes a further antenna.

25. The system as recited in claim 17, wherein said electronic communication device comprises a cellular telephone.

26. The system as recited in claim 17, wherein said housing structure is articulable with respect to said signal transmission line.

27. The system as recited in claim 17, wherein said radiative coupling element includes a empowering circuit electronically connected therewith.

28. The system as recited in claim 17, wherein said housing structure comprises an enclosure to at least partially enclose a portion of the externally radiative antenna of said electronic communication device, and an open section in which to receive said communication device.