TITLE:
Ultra-Thin and Flexible Multi-Band Rejection EMI Shield
AUTHORS:
Lin-Biao Wang, Jun-Wu Zhang, Kye Yak See, Tengiz Svimonishvili
KEYWORDS:
Frequency Selective Surfaces, Equivalent Circuit Modeling, Full Wave Modeling, EMI Shielding
JOURNAL NAME:
Journal of Electromagnetic Analysis and Applications,
Vol.6 No.7,
June
25,
2014
ABSTRACT: This
paper presents the design and fabrication of an ultra-thin and flexible electromagnetic
interference (EMI) shield that is capable of rejecting multiple unwanted
frequencies. The design starts with the equivalent circuit model of periodic
concentric rings to determine the initial geometrical dimensions of the rings
efficiently. Then it followed by full-wave electromagnetic simulation to
fine-tune the final dimensions for the desired frequency response. Impacts of
various geometrical designs on the EMI shielding performance of the concentric
ring design are analyzed and discussed. With these results, an ultra-thin and
flexible EMI shield is fabricated using the screen printing technique. Finally,
its multi-band rejection performance is validated experimentally. Good
correlation between measurement and simulation is demonstrated in this paper.