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Partial Placement of EBG on Both Power and Ground Planes for Broadband Suppression of Simultaneous Switching Noise
Jong Hwa KWON Jong Gwan YOOK
IEICE TRANSACTIONS on Communications
Publication Date: 2009/07/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Electromagnetic Compatibility(EMC)
electromagnetic compatibility (EMC), electromagnetic band gap (EBG), simultaneous switching noise, power integrity,
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In this paper, a novel method of partially placing electromagnetic band-gap (EBG) unit cells on both the power and ground planes in multi-layer PCBs and packages is proposed; it can not only sufficiently eliminate simultaneous switching noise (SSN), but also prevent severe degradation of signal quality in high-speed systems with imperfect reference planes resulting from the perforated structures of uni-planar EBG unit cells. On the assumption that the noise sources and noise-sensitive devices exist only in specific areas, the proposed method partially arranges the EBG unit cells on both the power and ground planes, but only around the critical areas. The SSN suppression performance of the proposed structure is verified by a simulation and measurements.