NDLI: Effects on signal integrity and radiated emission by split reference plane on high-speed multilayer printed circuit boards

Content Provider	IEEE Xplore Digital Library
Author	Jingook Kim Heeseok Lee Joungho Kim
Copyright Year	1999
Abstract	Power/ground partitioning has been used to supply multivoltage levels and to isolate power/ground noise in high-speed multilayer printed circuit boards. However, the partitioning of the power/ground plane breaks the current return path of the signal current through either the power plane or the ground plane, which causes undesired effects such as signal distortion, crosstalk, and radiation. To control and suppress these undesired effects, we should understand the electromagnetic mechanism associated with them. In this paper, the mechanism of the reflection and the transmission of the signal by the slotted power/ground plane is well understood through an analysis of measurements based on time-domain reflectometry. Considering the propagation of a slot wave through the slot line on the power/ground plane, we have successfully explained the changes of the transmitted and reflected waveforms. Furthermore, we have numerically and experimentally investigated the effects of the power/ground partitioning on the radiated emission in various structures. Finally, it is confirmed that the employment of a stitching capacitor on the power/ground slot suppresses the signal distortion and the radiated emission significantly. When the size and the location of the stitching capacitor are designed, there should be a compromise between the noise isolation and the guarantee of the return current path, with considering the resonance frequencies of planes by the capacitor.
Sponsorship	IEEE Components, Packaging, and Manufacturing Technology Society IEEE Components, Packaging and Manufacturing Technology Society
Starting Page	724
Ending Page	735
Page Count	12
File Size	647511
File Format	PDF
ISSN	15213323
Volume Number	28
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-11-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Nonhomogeneous media Printed circuits Crosstalk Distortion Capacitors Circuit noise Noise level Electromagnetic radiation Electromagnetic reflection Signal analysis stitching capacitor Electromagnetic interference noise coupling signal integrity slotline split plane
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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