Power bus isolation using power islands in printed circuit boards

Author

Chen, Juan ; Hubing, Todd H. ; Van Doren, Thomas P. ; Dubroff, Richard E.

Author_Institution

Intel Corp., Hillsboro, OR, USA

Volume

44

Issue

2

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

373

Lastpage

380

Abstract

Power islands are often employed in printed circuit board (PCB) designs to alleviate the problem of power bus noise coupling between circuits. Good isolation can be obtained over a wide frequency band due to the large series impedance provided by the gap between the power islands. However, power bus resonances may degrade the isolation at high frequencies. The amount of isolation also depends on the type of connection between power islands and the components on the board. This paper experimentally investigates the effectiveness of several power island structures up to 3.0 GHz

Keywords

circuit noise; electric impedance; island structure; printed circuit design; printed circuit testing; resonance; 3.0 GHz; PCB design; SHF; frequency band; power bus isolation; power bus noise coupling; power bus resonances; power island structures; power islands connection; printed circuit boards; series impedance; Capacitance; Circuit testing; Coupling circuits; Electromagnetic interference; Frequency; Impedance; Integrated circuit noise; Printed circuits; Resonance; Voltage;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/TEMC.2002.1003403

Filename

1003403