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

10.6180/jase.2009.12.2.12

W. T. Huang；C. H. Chen；K. W. Yang

Fan-Shaped Open Stub ； Power Integrity ； Power Bus ； Resonance ； PCB

淡江理工學刊

12卷2期（2009 / 06 / 01）

201 - 208

英文

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.