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Hexagonally Packed Multi-Coax Cable With Center Conductors Adapted to Form Connector Pins and Structure Holding the Cables in an Array for Plugging Into a Circuit Board

IP.com Disclosure Number: IPCOM000036007D
Original Publication Date: 1989-Aug-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Johnson, RA: AUTHOR [+2]

Abstract

A multi-coax cable has six identical coaxial cables packed in a hexagonal array around a ground conductor that has the same diameter as a coaxial cable. Fillers are positioned between the coaxial cables to give the cable a cylindrical shape, and an outer ground shield and an outer plastic jacket are formed around the assembly of the cables. The coaxial cables each have a center signal conductor, an outer braided ground conductor, and an intervening dielectric spacer. The outer braid is exposed so that the braids of adjacent cables electrically contact each other.

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Hexagonally Packed Multi-Coax Cable With Center Conductors Adapted to Form Connector Pins and Structure Holding the Cables in an Array for Plugging Into a Circuit Board

A multi-coax cable has six identical coaxial cables packed in a hexagonal array around a ground conductor that has the same diameter as a coaxial cable. Fillers are positioned between the coaxial cables to give the cable a cylindrical shape, and an outer ground shield and an outer plastic jacket are formed around the assembly of the cables. The coaxial cables each have a center signal conductor, an outer braided ground conductor, and an intervening dielectric spacer. The outer braid is exposed so that the braids of adjacent cables electrically contact each other.

Several multi-coax cables have their ends held in a square or rectangular array by a supporting structure. The hexagonal packing causes the center conductors of the multi-coax cables to lie on diagonals of the array. The center conductors of the signal conductors and ground conductors are shaped to form connector pins, and the array is plugged into a structure such as the back of a board that carries circuit modules on its front. The center conductors preferably have a larger than normal diameter, and they are reformed to a dumbbell shape in section. The pins have proper insertion force strength and contact hertzian stress.

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