A Study on Dependency of Transmission Loss of Shielded-Flexible Printed Circuits for Differential Signaling

Yoshiki KAYANO  Hiroshi INOUE  

IEICE TRANSACTIONS on Electronics   Vol.E101-C   No.8   pp.660-663
Publication Date: 2018/08/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E101.C.660
Type of Manuscript: BRIEF PAPER
flexible printed circuits,  electromagnetic shield,  transmission loss,  

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In this paper, dependency of transmission loss of shielded-flexible printed circuits (FPC) for differential-signaling on thickness of conductive shield is studied by numerical modeling based on an equivalent circuit model compared with the experimental results. Especially, the transmission loss due to the thin conductive shield is focused. The insufficient shielding performance for near magnetic field decreases the resistance due to the thin conductive shield. It is shown that the resistance due to the thin conductive shield at lower frequencies is smaller than that in the “thick conductive shield” case.