Segmented power planes are often used for DC power bus noise isolation in multi-layered 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 to study the power bus isolation with several power plane segmentation configurations. The studied geometries included power island designs connected with a conducting bridge, a ferrite bead, and a π-filter. In addition, different conducting bridge widths and power island gap widths were analyzed, and compared. The modeled and measured results show that power plane segmentations with proper designs can result in significant power bus noise isolation.

Meeting Name

IEEE International Symposium on Electromagnetic Compatibility (2001: Aug. 13-17, Montreal, Quebec)


Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

[pi]-Filter; DC Power Bus Noise Isolation; Conducting Bridge; Conducting Bridge Widths; Desirable Noise Isolation; Electromagnetic Interference; Ferrite Bead; Interference Suppression; Multi-Layered PCB; Multi-Layered Printed Circuit Board; Power Bus Noise Isolation; Power Island Designs; Power Island Gap Widths; Power Islands; Power Plane Segmentation Configurations; Printed Circuits; Segmented Power Planes

International Standard Book Number (ISBN)


International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2001 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Aug 2001