Browse Prior Art Database

Ferrite Connector Mask

IP.com Disclosure Number: IPCOM000111047D
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Goretzki, JA: AUTHOR [+2]

Abstract

In Fig. 1, a ferrite gasket (b) is placed between the connector (c) and the printed circuit card (a). The ferrite characteristic is such that it impedes electromagnetic interference (EMI) and, thus, reduces EMI coupling between the printed circuit card (which has EMI noise sources or EMI sensitive areas on it) and cables which plug into connector (c). The cables would otherwise act as an undesirable but efficient antenna between the circuit card and the outside environment.

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Ferrite Connector Mask

      In Fig. 1, a ferrite gasket (b) is placed between the connector
(c) and the printed circuit card (a).  The ferrite characteristic is
such that it impedes electromagnetic interference (EMI) and, thus,
reduces EMI coupling between the printed circuit card (which has EMI
noise sources or EMI sensitive areas on it) and cables which plug
into connector (c).  The cables would otherwise act as an undesirable
but efficient antenna between the circuit card and the outside
environment.

      Fig. 2 illustrates ferrite gasket designs for paired signal or
power lines (x) as well as individual signal or power lines (z).