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http://dx.doi.org/10.5515/KJKIEES.2008.19.8.933

Composite EBG Power Plane Using Magnetic Materials for SSN Suppression in High-Speed Digital Circuits  

Eom, Dong-Sik (Department of Electronics Engineering, Ajou University)
Kim, Dong-Yeop (Department of Electronics Engineering, Ajou University)
Byun, Jin-Do (Department of Electronics Engineering, Ajou University)
Lee, Hai-Young (Department of Electronics Engineering, Ajou University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.8, 2008 , pp. 933-939 More about this Journal
Abstract
In this paper, a new composite electromagnetic bandgap(EBG) structure using magnetic materials is proposed for simultaneous switching noise(SSN) suppression in the high-speed digital circuits. The proposed EBG structure has periodic unit cells of square-patches connected by spiral-shaped bridges. The magnetic materials are located on the unit cells of spiral-shaped EBG. The real part of the permeability shifts bandgap to the lower frequency region due to the increased effective inductance. The imaginary part of the permeability has magnetic loss that decreases parasitic LC resonance peaks from between the unit cells. As a result, the proposed structure has the lower cut-off frequency compared with conventional EBG structure and -30 dB SSN suppression bandwidth from 175 MHz to 7.7 GHz. The proposed structure is expected to improve the power integrity and reduce the size of the EBG power plane.
Keywords
Elelctromagnetic Bandgap(EBG); Simultaneous Switching Noise(SSN); Magnetic Materials; High-Speed Digital Circuits;
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