Coaxial dual antenna connection arrangement for communications apparatus

• US 4,286,335 A
• Filed: 11/08/1979
• Issued: 08/25/1981
• Est. Priority Date: 11/08/1979
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Gasparaitis, Bernard, Eichler, Jay H.
• Primary Examiner(s): Ng, Jin F.
• Application Number:
  US06/092,597
• Time in Patent Office: 656 Days
• Field of Search: 455/89, 455/90, 455/99, 455/128, 455/129, 455/277, 455/289, 455/345-347, 455/351, 455/74, 343/702, 200/51.09, 200/51.1, 200/153 S
• US Class Current: 455/90.3
• CPC Class Codes: H01R 13/703 operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling partH01R13/71 takes precedence
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/46 comprising switches
• CPC Class Codes: H04B 1/3877 Arrangements for enabling portable transceivers to be used in a fixed position, e.g. cradles or boosters
• CPC Class Codes: Y10S 439/916 Antenna

Abstract

Apparatus having an integral coaxial antenna coupled via a coaxial connector to its internal circuitry has a coaxial switch/connector for alternatively coupling an external coaxial signal source to the internal circuitry, thus reducing impedance mismatch to a minimum with no impedance matching network required.

Claims

1. An interconnection arrangement as for ultra high frequency communications apparatus containing radio circuitry, the arrangement comprising in combination:

a housing formed of an insulating material and having at least first and second apertures in the walls thereof;

a coaxial switch/connector retained within the insulating housing and including a conductive housing member having first and second apertures aligned with the first and second apertures respectively of the insulating housing, an insulating sleeve member retained within the conductive housing member and having first and second apertures aligned with the first and second apertures respectively of the conductive housing, a resilient conductive member retained by the insulating sleeve member with a first movable portion within the conductive housing and a second portion projecting from the conductive housing, the first portion having first and second positions, and in both positions being approximately axially aligned in the conductive housing member, a rigid conductive member movably supported within the sleeve member and having a first position in contact with the conductive housing member and a second position for moving the resilient conductive member from the first to the second position, and means for biasing the rigid conductive member into the first position;

a coaxial antenna having a first centrally located conductive element positioned to enter the insulating housing through the first aperture therein for coupling to the resilient conductive member when in the first position, and a second conductive outer element spaced from the first element and coupled to the conductive housing member adjacent the first aperture therein;

a first coaxial cable having a first centrally positioned conductive element for coupling the radio circuitry to the second portion of the resilient conductive member of the coaxial connector, and a second, outer conductive element spaced apart from the first element and coupled to the conductive housing member; and

a second coaxial cable for coupling signals from a second antenna to the radio circuitry and having a first centrally located conductive element adapted to be aligned with the second aperture of the insulating housing for contacting and moving the rigid conductive member of the coaxial connector from the first to the second position, disconnecting the centrally located element of the coaxial antenna from the resilient conductive member, and a second, outer conductive element spaced apart from the first element and coupled to the conductive housing member of the coaxial connector.

2. An interconnection arrangement as claimed in claim 1 wherein the insulating sleeve member of the switch/connector is molded in two mating portions for ease of insertion into the conductive housing member.

3. An interconnection arrangement as claimed in claim 1 wherein the coaxial antenna is releasably attached to the apparatus.

4. An interconnection arrangement as claimed in claim 1 wherein the apparatus includes a portable unit within the insulating housing and a mobile unit including the second coaxial cable and wherein the second coaxial cable includes a coaxial connector means for automatically aligning the cable when the portable unit is inserted into the mobile unit.

5. An interconnection arrangement as claimed in claim 1 wherein the conductive housing member includes means for coupling to the outer conductive element of the first coaxial cable.