Antenna transmission coupling arrangement

• US 5,493,702 A
• Filed: 04/05/1993
• Issued: 02/20/1996
• 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:
  US08/042,879
• Time in Patent Office: 1,051 Days
• Field of Search: 379/437, 379/451, 379/426, 379/446, 379/455, 379/58, 379/59, 455/89, 455/90, 455/300, 343/702, 343/841, 361/814
• US Class Current: 455/575.5
• 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

An arrangement for permitting the safe, shielded use of a hand held cellular telephone in a structure such as a building or a vehicle or airplane through the use of a dock which receives the cellular telephone and its short external antenna. The dock includes a housing which encloses the antenna and couples it to a more distant antenna external to the structure through a sheilded transmission cable, where the RF signals may be sent and received without harm to the person using the cellular telephone.

Claims

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

a shielded housing for receivably enclosing at least a portion of said external radiative antenna of said portable communication device; and

a coupling probe mounted within said shielded housing for radiatively coupling between said external antenna of said portable communication device and said further signal transmission line via radio frequency energy therebetween.

2. The docking system as recited in claim 1, wherein said shielded housing is comprised of an electrically conductive material.

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

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 shielded housing.

6. The docking system as recited in claim 5, wherein said shielded housing 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 shielded housing is articulably attached to a support structure, to permit adjustability with respect thereto.

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

arranging a shielded housing in attachment with said signal transmission line;

mounting a coupling probe within said shielded housing and in communication with said signal transmission line; and

inserting said external radiative antenna of said portable communication device into said shielded housing so as to permit radiative communication between said external radiative antenna and said signal transmission line via said coupling probe.

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 shielded housing.

12. The method of 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 radiative transmission between said external radiative antenna of said portable communication device, and said coupling probe 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 shielded housing with respect to said structure to facilitate mating of said external antenna with respect to said shielded housing.

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

15. A system for coupling a cellular telephone having an external radiative antenna, to a separate signal transmission line, said system comprising:

a shielded housing arranged to confiningly contain radio frequency energy; and

a coupling probe mounted within said housing, which probe is also in electrical communication with said separate signal transmission line;

said coupling probe arranged to radiatively transfer radio frequency energy between an external radiative antenna of a cellular telephone placed a spaced distance there adjacent, and said separate signal transmission line, to effectuate coupling thereof when said cellular telephone 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 housing.