Shielding effectiveness of multi-layered Cu and PET thin films from electromagnetic interference

This paper describes the shielding effectiveness (SE) of a thin-film multilayer of Cu and polyethylene terephthalate (PET) from electromagnetic interference. SE was evaluated from the S parameter through electromagnetic field simulations and measurements using a standard test fixture. The SE of a multilayer with three Cu films and two PET films, Cu/PET/Cu/PET/Cu, was 20 dB larger than that of three Cu films, Cu/Cu/Cu, in frequency bands of less than 100 MHz.

[1]  Sang Gul Lee,et al.  Electromagnetic Interference (EMI) Shielding Efficiency (SE) Characteristics of the ITO/Ag Multilayer Structure , 2007 .

[2]  C. Y. Lee,et al.  High frequency electromagnetic interference shielding response of mixtures and multilayer films based on conducting polymers , 2000 .

[3]  N. Colaneri,et al.  EMI shielding measurements of conductive polymer blends , 1991, [1991] Conference Record. IEEE Instrumentation and Measurement Technology Conference.

[4]  Cristian Morari,et al.  Electrical Conductivity and Electromagnetic Shielding Effectiveness of Silicone Rubber Filled with Ferrite and Graphite Powders , 2011 .

[5]  A. Nishikata,et al.  Modeling and analysis of the electromagnetic shielding behavior of superconductors, conductors and magnetic materials , 1994 .

[6]  Y. Kurosawa,et al.  Effect of material processing on fatigue of FPC rolled copper foil , 2000 .

[7]  Takahide Oya,et al.  Fabrication of Novel Electromagnetic Shielding Sheets Using Carbon-Nanotube-Composite Paper , 2014 .

[8]  Inho Kim,et al.  The electromagnetic interference shielding effect of indium?zinc oxide/silver alloy multilayered thin films , 2005 .

[9]  Er-Ping Li,et al.  A systematic coupled approach for electromagnetic susceptibility analysis of a shielded device with multilayer circuitry , 2005, IEEE Transactions on Electromagnetic Compatibility.

[10]  V. M. Grachev,et al.  Electromagnetic shields based on multilayer film structures , 2015 .

[11]  Jie Yuan,et al.  Flexible graphene/polymer composite films in sandwich structures for effective electromagnetic interference shielding , 2014 .

[12]  W. Marsden.  I and J , 2012 .

[13]  Shih-Ming Yang,et al.  Electromagnetic shielding effectiveness of multilayer metallic thin film on plastic substrates , 2008 .

[14]  Nobuyoshi Mutoh,et al.  A Suitable Method for Ecovehicles to Control Surge Voltage Occurring at Motor Terminals Connected to PWM Inverters and to Control Induced EMI Noise , 2008, IEEE Transactions on Vehicular Technology.

[15]  N. Colaneri,et al.  EMI shielding measurements of conductive polymer blends , 1991 .

[16]  Veena Choudhary,et al.  Structural details, electrical properties, and electromagnetic interference shielding response of processable copolymers of aniline , 2012, Journal of Materials Science.