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Improved Module Reference Plane Design

IP.com Disclosure Number: IPCOM000054796D
Original Publication Date: 1980-Apr-01
Included in the Prior Art Database: 2005-Feb-13

Publishing Venue

IBM

Related People

Authors:
Hill, YM [+details]

Abstract

In electrical package design, whenever the connection lengths exceed a critical length of the order of 1/10 the product of the switching time and the velocity of propagation (30.3/divided by Epsilon(r) cm/nsec one must consider reference planes to control transmission line impedance and reduce crosstalk. In dense wiring cases the penalty can be erratic, data dependent performance.