Browse Prior Art Database

High Performance Coaxial Cable Connector

IP.com Disclosure Number: IPCOM000101279D
Original Publication Date: 1990-Jul-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 69K

Publishing Venue

IBM

Related People

Mullen, BE: AUTHOR [+3]

Abstract

Described is a method and structure for controlling the impedance of both cable and connector in a circuit communication network such that coupled noise, electrostatic discharge (ESD), electromagnetic interference (EMI), and discontinuities are minimized.

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This is the abbreviated version, containing approximately 76% of the total text.

High Performance Coaxial Cable Connector

       Described is a method and structure for controlling the
impedance of both cable and connector in a circuit communication
network such that coupled noise, electrostatic discharge (ESD),
electromagnetic interference (EMI), and discontinuities are
minimized.

      The high performance coaxial cable 10 and microstrip connector
12 are shown in Fig. 1.  Fig. 2 depicts an expanded, cross-sectional
view of region A of the triplate cable 10 where signal conductors (S)
are alternated with ground conductors (G).  Both plates 14 of the
triplate structure are grounded.  This particular cross section is an
80 ohm design in which a low dielectric material (er = 1.5) is
utilized.  The conductors 16 are on 50 mils centers with a diameter
equal to 10 mils.  The spacing between the plates is 28 mils.  The
cable design can be easily modified to accommodate a wide range of
impedances.  With this coaxial design, coupled noise is virtually
eliminated.  The conductors 16 are shielded by the triplate to
provide ESD and EMI protection.

      Fig. 3 depicts an expanded view of the section B shown in Fig.
1, illustrating a method of commoning all the grounds together.  This
includes the plates 14, the designated alternating cable grounds and
the connector ground pins.  Fig. 4 shows the insulation displacement
connector 20 to post receptacle contact points 22.

      Due to the extremely low crosstalk cable connector, there ar...