Browse Prior Art Database

Stamped Connector for I/O Card System

IP.com Disclosure Number: IPCOM000037295D
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Asselta, JA: AUTHOR [+3]

Abstract

In order to achieve very low electrical noise in high density connector systems needed in high performance computers, the connector system must have matched impedance along its entire length. A connector system that contains a bifurcated contact usually does not contain that quality. This can be done if the connector is made from a laminated structure containing the signal and ground conductors separated by an insulator of the proper thickness to achieve the desired impedance.

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Stamped Connector for I/O Card System

In order to achieve very low electrical noise in high density connector systems needed in high performance computers, the connector system must have matched impedance along its entire length. A connector system that contains a bifurcated contact usually does not contain that quality. This can be done if the connector is made from a laminated structure containing the signal and ground conductors separated by an insulator of the proper thickness to achieve the desired impedance.

This connector can be made by stamping and forming the device from a sheet of material as is done today with many connectors. This material, however, would be a three-layer laminated sheet 1 containing metal 2/insulator 3/metal 4.

Most connectors are stamped with a tie-strip holding them together to make them easy to handle and assemble into carriers or boards. The tie strip is normally broken off after insertion or assembly. This is not necessary with the laminated connector system. The tie-strip 5 is the ground or electrical shield of the connector that commons the connector grounds together electrically and holds them in proper mechanical position.

The connector signal 6 and ground contacts 7 can be made to attach to adjacent signal-ground pins on a board surface or pads on a card edge. The output of the connector could attach directly to a coaxial cable to complete the impedance matched signal path.

This connector system can be placed on a 2.5 mm gr...