Browse Prior Art Database

High Density Shielded Connector

IP.com Disclosure Number: IPCOM000102030D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 73K

Publishing Venue

IBM

Related People

Bahri, K: AUTHOR [+3]

Abstract

The disclosed invention is a new inter-connection device, consisting of a cable and board module, respectively, which provides a signal path with 360-degree shielding from the cables to the board interface as well as cable to cable connections. It provides matched 50 ohm cable/ connector impedance, very low noise (<2mV), very low time delay (13.7ps over the cable delay), high contact redundancy (3X) and high density (1 to 1 signal/ground over a 1.25 by 1.25 mm grid).

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High Density Shielded Connector

       The disclosed invention is a new inter-connection device,
consisting of a cable and board module, respectively, which provides
a signal path with 360-degree shielding from the cables to the board
interface as well as cable to cable connections.  It provides matched
50 ohm cable/ connector impedance, very low noise (<2mV), very low
time delay (13.7ps over the cable delay), high contact redundancy
(3X) and high density (1 to 1 signal/ground over a 1.25 by 1.25 mm
grid).

      The 360-degree shielding is obtained by wrapping the signal
contacts in insulators, then ground shells.  The density improves
over current cable grid because each signal on 2.5mm staggered grid
has its own associated ground superimposed about the signal on that
same grid.  This grid is converted to a 1.25mm standard grid (both
directions) at the board level (signal/ground).

      The board module is a molded block which will house 96 signals
in 96 ground contacts.  The signal contact is made from a tube bonded
in a insulator.  This insulator is then pushed into the ground
contact having cantilevered beams, which ground contact is pushed
into the board module.  The board module is connected to the board
via pins or pads.

      The cable module consists of a molded block which houses 96
cable assemblies.  Each cable assembly consists of a signal pin
surrounded by 4 insulator spacers, a concentric ground tube with
shield, and has a cable atta...