Analysis of Embedded Electromagnetic Band Gap (EEBG) Structures for Simultaneous Switching Noise Suppression in PCBs

• Main Authors: Jian-Fu Shen, 沈建甫
• Other Authors: Jiun-Hwa Lin
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/98924237863247100944

碩士 === 國立臺灣海洋大學 === 電機工程學系 === 98 === In this thesis, we analyze various equivalent circuit models of EEBG (Embedded Electromagnetic Band-Gap) structure, and modify these equivalent circuits so that they become simpler without losing their accuracy. We further investigate DS-EEBG (Double-Stacked Embedded Electromagnetic Band-Gap) structures, analyze various configurations of DS-EEBG, and propose better configurations which have broader stopband, and better noise suppression performance. If reasonable equivalent circuit models are available, they can not only accurately estimate circuit parameters, but also save substantial simulation time compared to full-wave electromagnetic simulators. Therefore, we establish equivalent circuit models of DS-EEBG structure, and validate these equivalent circuits by comparing the results thus obtained with those calculated by the CST MWS, a FDTD-based commercial simulator. Situations of different patch width, substrate or via height are investigated and all the results compare favorably with those simulated by CST MWS. With these proposed equivalent circuits, rather accurate frequency range for the stopband can be predicted within several seconds of simulation time.