DocumentCode :
2208880
Title :
A study on transmission characteristics and shielding effectiveness of shielded-flexible printed circuits for differential-signaling
Author :
Kayano, Yoshiki ; Inoue, Hiroshi
Author_Institution :
Graduate School of Engineering and Resource Science, Akita University, Japan
fYear :
2015
fDate :
16-22 Aug. 2015
Firstpage :
80
Lastpage :
85
Abstract :
To provide basic considerations for the realization of method for suppressing the EMI from differential-paired lines on flexible printed circuits (FPC), the characteristics of the SI performance and shielding effectiveness (SE) of shielded-flexible printed circuits for differential-signaling are investigated in this paper experimentally and by a numerical modeling. Firstly, transmission characteristics of TDR measurement and frequency response of |Sdd21| are discussed, from view point of signal integrity. Secondly, as the characteristics of the SE performance for EMI, frequency responses of magnetic field are investigated. Although placement of conductive shield near the paired-lines decreases characteristics impedance, |Sdd21| for the “with Cu 5.5um-thickness copper shield” is not deteriorated compared with “without shield” and sufficient SE performance for magnetic fields can be established. But, thin-shield deteriorates SI as well as SE performances.
Keywords :
Cable shielding; Electromagnetic interference; Frequency measurement; Impedance; Magnetic field measurement; Magnetic fields; Printed circuits; Differential-signaling; common-mode; differential-mode; electromagnetic shield; flexible printed circuits;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electromagnetic Compatibility (EMC), 2015 IEEE International Symposium on
Conference_Location :
Dresden, Germany
Print_ISBN :
978-1-4799-6615-8
Type :
conf
DOI :
10.1109/ISEMC.2015.7256136
Filename :
7256136
Link To Document :
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