Browse Prior Art Database

"True Triplate" PC Board Construction to Reduce Electrical Noise and Improve Wireability

IP.com Disclosure Number: IPCOM000103155D
Original Publication Date: 1990-Jul-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 48K

Publishing Venue

IBM

Related People

Hoffarth, JG: AUTHOR [+2]

Abstract

Coaxial Cables are widely used in the electronic industry to provide noise free or low noise, low distortion, low radiation (emission and susceptibility) electronic signal transfer and interconnections. "True Triplate" provides a "built-in" shielding technique similar to coaxial cables but implemented in PC board or card construction by controlling the electrical fields thereby providing crosstalk suppression and enabling concurrent orthogonal or parallel signal transmissions. The resultant cross-coupled noise reduction also permits higher circuit density connections by allowing reduction of the line pitch required to meet the circuit noise budgets (allowable circuit cross-coupled noise). (Image Omitted)

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"True Triplate" PC Board Construction to Reduce Electrical Noise and Improve Wireability

      Coaxial Cables are widely used in the electronic industry to
provide noise free or low noise, low distortion, low radiation
(emission and susceptibility) electronic signal transfer and
interconnections.  "True Triplate" provides a "built-in" shielding
technique similar to coaxial cables but implemented in PC board or
card construction by controlling the electrical fields thereby
providing crosstalk suppression and enabling concurrent orthogonal or
parallel signal transmissions.  The resultant cross-coupled noise
reduction also permits higher circuit density connections by allowing
reduction of the line pitch required to meet the circuit noise
budgets (allowable circuit cross-coupled noise).

                            (Image Omitted)

      The insertion of a conductive reference plane between the X, Y
circuit lines in a standard circuit core together with the outer
conductive layers control electrical fields to produce the desired
effects.  The feasibility has been demonstrated through computer
simulations modeling and some limited measurements.  The
cross-section example below describes the methods of construction for
a typical structure.

      Disclosed anonymously.