Power-plane segmentation is often used for DC power-bus noise isolation in multilayer printed circuit board (PCB) designs. To achieve a desirable noise isolation, different power-plane segmentations can be used. A suitable modeling approach, as well as measurements, were employed in this work to study the noise isolation with several power-plane segmentation designs. The geometries studied include power islands, and totally segmented power planes. The effects of the power-bus noise isolation with different types of power island connections, locations of segmentation, and shapes were analyzed, and compared. The modeled and measured results show that suitable power-plane segmentation can result in significant power-bus noise isolation.


Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

DC Power-Bus Noise Isolation; Circuit Noise; Electromagnetic Compatibility; Electromagnetic Interference; Interference Suppression; Modeling Approach; Modelling; Multilayer PCB Designs; Multilayer Printed Circuit Board Designs; Noise Isolation; Power Islands; Power-Plane Segmentation; Printed Circuit Design; Totally Segmented Power Planes; DC Power-Bus Design; Noise Isolation; Power Island

International Standard Serial Number (ISSN)

0018-9375; 1558-187X

Document Type

Article - Journal

Document Version

Final Version

File Type





© 2003 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 May 2003