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A Novel Automatically Designed EBG Structure by Improved GA for Ultrawideband SSN Mitigation of System in Package.

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Title: A Novel Automatically Designed EBG Structure by Improved GA for Ultrawideband SSN Mitigation of System in Package.
Authors: Zhu, Hao-Ran1 hrzhu86@gmail.com, Wang, Jia-Bao1, Sun, Yu-Fa1, Wu, Xian-Liang1, Mao, Jun-Fa2
Source: IEEE Transactions on Components, Packaging & Manufacturing Technology. Jan2020, Vol. 10 Issue 1, p123-133. 11p.
Subjects: Power distribution networks, Genetic algorithms, Surface impedance, Impedance spectroscopy
Abstract: In this article, a novel automatically designed electromagnetic bandgap (EBG) structure is presented to prohibit the simultaneous switching noise (SSN) propagation of a system in package. The tool employed for the automatic EBG design is the improved genetic algorithm (GA), which has the advantages of rapid convergence and high precision by combining several improvements reasonably. Meanwhile, the equivalent circuit model and the dispersion diagram of the proposed structure are established to interpret the electromagnetic characteristics of the designed power distribution network (PDN). By removing some patches in a specific area determined by the GA, the surface impedance of PDN can be increased to reduce the SSN coupling. The SSN transmission can be suppressed from 0.37 to 20 GHz at a mitigation level of −50 dB. The measured results agree well with the simulated ones. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:In this article, a novel automatically designed electromagnetic bandgap (EBG) structure is presented to prohibit the simultaneous switching noise (SSN) propagation of a system in package. The tool employed for the automatic EBG design is the improved genetic algorithm (GA), which has the advantages of rapid convergence and high precision by combining several improvements reasonably. Meanwhile, the equivalent circuit model and the dispersion diagram of the proposed structure are established to interpret the electromagnetic characteristics of the designed power distribution network (PDN). By removing some patches in a specific area determined by the GA, the surface impedance of PDN can be increased to reduce the SSN coupling. The SSN transmission can be suppressed from 0.37 to 20 GHz at a mitigation level of −50 dB. The measured results agree well with the simulated ones. [ABSTRACT FROM AUTHOR]
ISSN:21563950
DOI:10.1109/TCPMT.2019.2955823