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Journal of the Korean Institute of Electromagnetic and Science 2006;6(1):62-70.
Design of Power Plane for Suppressing Spurious Resonances in High Speed PCBs
Seung-Seok Oh, Jung-Min Kim, Jong-Gwan Yook
Department of Electrical and Electronic Engineering, Yonsei University
This paper presents a new power plane design method incorporating a single geometry derived from a unit cell of photonic bandgap(PBG) structure. This method yields constantly wide suppression of parallel plate resonances from 0.9 GHz to 4.2 GHz and is very efficient to eliminate PCB resonances in a specified frequency region to provide effective suppression of simultaneous switching noise(SSN). It is shown that with only two cells the propagation of unwanted high frequency signals is effectively suppressed, while it could provide continuous return signal path. The measured results agree very well with theoretically predicted ones, and confirm that proposed method is effective for reducing EMI, with measured near-field distribution. The proposed topology is suitable for design of high speed digital system.
Key words: Simultaneously Switching Noise(SSN), Electromagnetic Interference(EMI), Photonic Bandgap(PBG), Printed Circuit Board(PCB), Parallel-Plate Resonance, Signal Integrity(SI)
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