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Design of Power Plane for Suppressing Spurious Resonances in High Speed PCBs  

Oh Seung-Seok (Department of Electrical and Electronic Engineering, Yonsei University)
Kim Jung-Min (Department of Electrical and Electronic Engineering, Yonsei University)
Yook Jong-Gwan (Department of Electrical and Electronic Engineering, Yonsei University)
Publication Information
Journal of electromagnetic engineering and science / v.6, no.1, 2006 , pp. 62-70 More about this Journal
Abstract
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.
Keywords
Simultaneously Switching Noise(SSN); Electromagnetic Interference(EMI); Photonic Bandgap(PBG); Printed Circuit Board(PCB); Parallel-Plate Resonance; Signal Integrity(SI);
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