High-performance laminated thin-film shield with conductors and magnetic material multilayer

Keiju Yamada, Masaaki Ishida, Shimada Yutaka, Masahiro Yamaguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

This paper presents a laminated shield consisting of conductors and a magnetic material multilayer. The laminated shield provides a high shielding performance in an ultrahigh-frequency (UHF) band because the magnetic materials have high permeability and multi reflection occurs in the shield. Furthermore, the shielding performance is enhanced at the ferromagnetic resonance (FMR) frequency of the magnetic materials because the magnitude of complex permeability is maximized owing to the large imaginary part of permeability. We examined the shielding mechanisms of the laminated shield and a conductor shield by impedance calculation. The shielding performance obtained by impedance calculation coincides with that obtained by finite element method (FEM) simulation. The laminated shield is fabricated using a CoNbZr thin-film layer with a thickness of 0.2 m and two Cu layers with a thickness of 0.4 m. The measured shield effectiveness of the laminated thin-film shield is 27 dB higher than that of the conductor shield at a frequency of 470 MHz, which is similar to the results of impedance calculation and FEM simulation.

Original languageEnglish
Title of host publicationEMC 2011 - Proceedings
Subtitle of host publication2011 IEEE International Symposium on Electromagnetic Compatibility
Pages432-437
Number of pages6
DOIs
Publication statusPublished - 2011
Event2011 IEEE International Symposium on Electromagnetic Compatibility, EMC 2011 - Long Beach, CA, United States
Duration: 2011 Aug 142011 Aug 19

Publication series

NameIEEE International Symposium on Electromagnetic Compatibility
ISSN (Print)1077-4076

Other

Other2011 IEEE International Symposium on Electromagnetic Compatibility, EMC 2011
CountryUnited States
CityLong Beach, CA
Period11/8/1411/8/19

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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  • Cite this

    Yamada, K., Ishida, M., Yutaka, S., & Yamaguchi, M. (2011). High-performance laminated thin-film shield with conductors and magnetic material multilayer. In EMC 2011 - Proceedings: 2011 IEEE International Symposium on Electromagnetic Compatibility (pp. 432-437). [6038350] (IEEE International Symposium on Electromagnetic Compatibility). https://doi.org/10.1109/ISEMC.2011.6038350