Shielding effectiveness of conductive polymers

Author

Naishadham, Krishna

Author_Institution

Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA

Volume

34

Issue

1

fYear

1992

fDate

2/1/1992 12:00:00 AM

Firstpage

47

Lastpage

50

Abstract

The plane wave shielding effectiveness of two new materials, conductive polymers polyacetylene and PBT doped by ion implantation with iodine, is evaluated as a function of frequency, electrical thickness, doping, polarization, and angle of incidence. Conductivity of the polymers, measured in previous investigations by the cavity perturbation technique, is used to compute the overall reflection and transmission coefficients of single and multiple layers of the polymers. The polymers are found to display excellent shielding effectiveness (better than 40 dB over a substantial frequency band). With recent advances in synthesizing stable highly conductive polymers these light-weight mechanically strong materials appear to be viable alternatives to metals for EMI shielding

Keywords

conducting polymers; electromagnetic interference; interference suppression; magnetic shielding; EMI shielding; PBT; angle of incidence; cavity perturbation technique; conductive polymers; conductivity measurement; doping; electrical thickness; frequency; ion implantation; plane wave; polarization; polyacetylene; shielding effectiveness; transmission coefficients; Conducting materials; Conductivity measurement; Displays; Doping; Frequency; Ion implantation; Optical reflection; Perturbation methods; Polarization; Polymers;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.121666

Filename

121666