Efficient EMI reduction in multilayer PCB using novel wideband electromagnetic bandgap structures

Hui Sen He; Xin Quan Lai; Wen Dan Xu; Jian Guo Jiang; Ming Xiang Zang; Qiang Ye; Qiang Wang

doi:10.1002/mmce.20516

Efficient EMI reduction in multilayer PCB using novel wideband electromagnetic bandgap structures

Hui Sen He^*, Xin Quan Lai, Wen Dan Xu, Jian Guo Jiang, Ming Xiang Zang, Qiang Ye, Qiang Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Electromagnetic interference is a significant problem in high-speed circuits. To minimize its effect and improve the electrical characteristics of circuits such as signal integrity and electromagnetic compatibility, the application of an electromagnetic isolation structure with electromagnetic bandgap (EBG) is considered. In this paper, a novel wideband EBG structure is proposed for EMI reduction in multilayer printed circuit boards (PCB), in which a kind of improved L-bridge is used as additional series inductance, and the equivalent inductance can be increased significantly. Compared to the traditional mushroom-liked EBG structure with the same parameters, the L-bridge structure can broaden the relative bandwidth to nearly 250%, with a significant decline of the center frequency. The effectiveness and accuracy of this structure are verified by both simulations and measurements.

Original language	English
Pages (from-to)	363-370
Number of pages	8
Journal	International Journal of RF and Microwave Computer-Aided Engineering
Volume	21
Issue number	4
DOIs	https://doi.org/10.1002/mmce.20516
Publication status	Published - Jul 2011
Externally published	Yes

Keywords

bandwidth
electromagnetic bandgap
electromagnetic interference
printed circuit board

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10.1002/mmce.20516

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title = "Efficient EMI reduction in multilayer PCB using novel wideband electromagnetic bandgap structures",

abstract = "Electromagnetic interference is a significant problem in high-speed circuits. To minimize its effect and improve the electrical characteristics of circuits such as signal integrity and electromagnetic compatibility, the application of an electromagnetic isolation structure with electromagnetic bandgap (EBG) is considered. In this paper, a novel wideband EBG structure is proposed for EMI reduction in multilayer printed circuit boards (PCB), in which a kind of improved L-bridge is used as additional series inductance, and the equivalent inductance can be increased significantly. Compared to the traditional mushroom-liked EBG structure with the same parameters, the L-bridge structure can broaden the relative bandwidth to nearly 250%, with a significant decline of the center frequency. The effectiveness and accuracy of this structure are verified by both simulations and measurements.",

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AU - He, Hui Sen

AU - Lai, Xin Quan

AU - Xu, Wen Dan

AU - Jiang, Jian Guo

AU - Zang, Ming Xiang

AU - Ye, Qiang

AU - Wang, Qiang

PY - 2011/7

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N2 - Electromagnetic interference is a significant problem in high-speed circuits. To minimize its effect and improve the electrical characteristics of circuits such as signal integrity and electromagnetic compatibility, the application of an electromagnetic isolation structure with electromagnetic bandgap (EBG) is considered. In this paper, a novel wideband EBG structure is proposed for EMI reduction in multilayer printed circuit boards (PCB), in which a kind of improved L-bridge is used as additional series inductance, and the equivalent inductance can be increased significantly. Compared to the traditional mushroom-liked EBG structure with the same parameters, the L-bridge structure can broaden the relative bandwidth to nearly 250%, with a significant decline of the center frequency. The effectiveness and accuracy of this structure are verified by both simulations and measurements.

AB - Electromagnetic interference is a significant problem in high-speed circuits. To minimize its effect and improve the electrical characteristics of circuits such as signal integrity and electromagnetic compatibility, the application of an electromagnetic isolation structure with electromagnetic bandgap (EBG) is considered. In this paper, a novel wideband EBG structure is proposed for EMI reduction in multilayer printed circuit boards (PCB), in which a kind of improved L-bridge is used as additional series inductance, and the equivalent inductance can be increased significantly. Compared to the traditional mushroom-liked EBG structure with the same parameters, the L-bridge structure can broaden the relative bandwidth to nearly 250%, with a significant decline of the center frequency. The effectiveness and accuracy of this structure are verified by both simulations and measurements.

KW - bandwidth

KW - electromagnetic bandgap

KW - electromagnetic interference

KW - printed circuit board

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Efficient EMI reduction in multilayer PCB using novel wideband electromagnetic bandgap structures

Abstract

Keywords

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