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A stopband enhanced EBG power/ground plane based on via location design

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2 Author(s)
Chuen-De Wang ; Dept. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Tzong-Lin Wu

A novel electromagnetic bandgap (EBG) structure power/ground plane by using multilayer stack-up structure and multiple vias is proposed. A wide stopband exhibited by the proposed EBG structure is used to suppress the power noise coupling between power/ground plane in the package. Both the upper and lower side cutoff frequencies are enhanced through the via connection and location design. A simplified one-dimensional equivalent model is established to explain the concept of the stopband enhancement. Different via position and the resultant bandgap variation are demonstrated by both dispersion diagram and S-parameter.

Published in:

CPMT Symposium Japan, 2010 IEEE

Date of Conference:

24-26 Aug. 2010

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