Apparatus for coupling RF signals

• US 6,139,364 A
• Filed: 09/08/1995
• Issued: 10/31/2000
• Est. Priority Date: 09/08/1995
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Cruz, Michael Steven, Skutta, Frank Robert, Beutler, Scott David
• Primary Examiner(s): Abrams, Neil
• Application Number:
  US08/525,257
• Time in Patent Office: 1,880 Days
• Field of Search: 439/607, 439/493, 439/497, 439/579, 439/108, 439/581, 439/610
• US Class Current: 439/607.01
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01R 2201/16 for telephony
• CPC Class Codes: H01R 24/40 specially adapted for high frequency
• CPC Class Codes: H04M 1/0274 for an electrical connector module
• CPC Class Codes: H04M 1/215 by non-intrusive coupling means, e.g. acoustic couplers

Abstract

A unique apparatus for coupling radio frequency (RF) signals from a wireless communication device (200) to an external device by way of an I/O port (116). In particular, a connector having three adjacent contact elements (238) couples signals to an external device wherein the first and third contact elements (239, 241) are electrically coupled to a ground plane (302) and wherein the second or middle contact element (240) is electrically coupled to a conductive RF signal path (344). The ground plane and the conductive path (334) are preferably on a printed circuit (pc) board which is preferably a three layer board with the conductive path (334) located between two ground planes (302, 352). The connector is substantially covered with a shield (230) coupled by legs (248) to the ground plane (302) at apertures (332). A mating connector (400) also includes a shield (430) which is commonly grounded. The mating connector preferably includes an internally located coaxial connector (412) and cable (414) to minimize loss of RF communication signals. Components of the connectors (116, 400) are selectively grounded to eliminate RF interference and establish a reliable RF ground reference to a pc board (300) of the wireless communication device and the coaxial connector. The connectors also include latching members (405) and apertures (250) for firm coupling therebetween.

Claims

1. An apparatus for coupling radio frequency signals from a wireless communication device to an external device, wherein said wireless communication device includes a circuit board, a first connector and a first shield, said circuit board having a plurality of layers comprising at least:

a first layer having a ground plane and a plurality of contact pads comprising three adjacent contact pads wherein said first and third contact pads of said three adjacent contact pads are electrically coupled to said ground plane of said first layer; and

a second layer having a conductive path wherein said second contact pad of said three adjacent contact pads is electrically coupled to said conductive path, and

wherein said first connector is coupled to said circuit board for coupling said radio frequency signals to said external device, said first connector having a first plurality of conductive elements comprising three adjacent conductive elements which are electrically coupled to said three adjacent contact pads of said plurality of contact pads of said first layer, and

wherein said first shield is adapted to substantially cover said first plurality of conductive elements of said first connector, said first shield being coupled to said ground plane of said first layer, said apparatus comprising;

a second connector for operatively coupling to said first connector, said second connector comprising a second plurality of adjacent conductive elements adapted to mate with said first plurality of conductive elements, said second plurality of adjacent conductive elements comprising a first element, a second element and a third element for operatively coupling with each of said three adjacent conductive elements, respectively; and

a second shield substantially covering said second plurality of conductive elements wherein said second shield electrically couples to said first shield when said second conductor operatively couples to said first connector, and wherein said first element and said third element of said second plurality of conductive elements are electrically coupled to an outer conductor of a coaxial connector which is electrically connected to said second shield.

2. The apparatus for coupling radio frequency signals of claim 1 wherein said second element of said second plurality of conductive elements is coupled to an inner conductor of said coaxial connector.

4. The apparatus for coupling radio frequency signals of claim 1 wherein said second one of said plurality of adjacent conductive elements is coupled to said inner conductor of said coaxial connector and is adapted to make connection to a corresponding conductive element of said second connector for receiving said radio frequency signals therefrom.

3. An apparatus for coupling radio frequency signals from a wireless communication device to an external device comprising:

a first connector comprising a plurality of adjacent conductive elements including first, second and third ones of said plurality of adjacent conductive elements and other ones of said plurality of adjacent conductive elements, wherein said plurality of adjacent conductive elements are adapted to make a connection to a second connector of said wireless communication device, and wherein said first and third ones of said plurality of adjacent conductive elements separate said second one of said plurality of adjacent conductive elements from said other ones of said plurality of adjacent conductive elements;

a shield substantially covering said plurality of adjacent conductive elements wherein said first and third ones of said plurality of adjacent conductive elements are electrically coupled to said shield; and

a coaxial connector coupled to said first connector and including an outer conductor and an inner conductor, wherein said first and third ones of said plurality of adjacent conductive elements are electrically coupled to said outer conductor of said coaxial connector, and wherein said outer conductor is electrically connected to said shield.

5. An apparatus for coupling radio frequency signals from a wireless communication device to an external device comprising:

a first connector comprising a plurality of exposed conductive elements for coupling to a similar plurality of conductive elements of a second connector, said wireless communication device including said second connector;

a coaxial connector positioned within said first connector wherein first and third conductive elements of said plurality of exposed conductive elements are coupled to an outer conductor of said coaxial connector and wherein a second conductive element of said plurality of exposed conductive elements is coupled to an inner conductor of said coaxial connector and is adapted to connect to a corresponding one of said similar plurality of conductive elements of said second connector for receiving said radio frequency signals therefrom; and

a shield substantially covering said plurality of exposed conductive elements, said shield electrically coupled to said outer conductor of the coaxial connector.