Influence of Adjacent Metal Cover Planes on EMC Filter Structures

Thomas FISCHER; Goeran SCHUBERT; Manfred ALBACH

doi:10.1587/transcom.E93.B.1768

Special Section on Advanced Electromagnetic Compatibility Technology in Conjunction with Main Topics of EMC'09/Kyoto

Influence of Adjacent Metal Cover Planes on EMC Filter Structures

Thomas FISCHER, Goeran SCHUBERT, Manfred ALBACH

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Keywords: EMC, low-pass, conductive planes

JOURNAL RESTRICTED ACCESS

2010 Volume E93.B Issue 7 Pages 1768-1775

DOI https://doi.org/10.1587/transcom.E93.B.1768

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Abstract

This paper deals with the influence of metal cover planes close to SMD filter structures. The low-pass structures are used for EMC purpose and work in a frequency range of 100kHz to 4GHz. It will be shown by both measurement and simulation that a close cover plane changes the filter behavior significantly in dependency of the filter component used. For low and high impedance filter structures different influences are obtained; a parameter study was carried out in order to derive design rules.

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