Resonance-Aware Design Approach for Reducing Noise Coupling between Power Buses: Using Fan-Shaped Open Stub on Printed Circuit Boards

W. T. Huang; C. H. Chen; K. W. Yang

doi:10.6180/jase.2009.12.2.12

Resonance-Aware Design Approach for Reducing Noise Coupling between Power Buses: Using Fan-Shaped Open Stub on Printed Circuit Boards

Computer Science and Information Engineering

W. T. Huang This email address is being protected from spambots. You need JavaScript enabled to view it.¹, C. H. Chen² and K. W. Yang³

¹Department of Computer Science and Information Engineering, Minghsin University, Hsinchu, Taiwan 304, R.O.C.
²Department of Management Information Systems, Central Taiwan University, Taichung, Taiwan 406, R.O.C.
³Department of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan 106, R.O.C.

Received: November 28, 2007
Accepted: January 13, 2009
Publication Date: June 1, 2009

Download Citation: ||https://doi.org/10.6180/jase.2009.12.2.12

ABSTRACT

Power islands are often employed in printed circuit board designs to reduce the problem of power bus noise coupling between circuits. However, the resonances between two neighboring power buses, which could be supplying different voltages, can increase the ground bounce noise at high frequencies. Therefore, we propose a new resonance-aware design - a fan-shaped open stub structure embedded in the power bus to reduce noise. Based on our simulation and experimental results, |S₂₁| of about -10 dB in the primitive structure could be reduced to -30 dB and -42 dB, respectively, demonstrating that this method is effective in controlling ground bounce noise.

Keywords: Fan-Shaped Open Stub, Power Integrity, Power Bus, Resonance, PCB

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