Hostname: page-component-8448b6f56d-c4f8m Total loading time: 0 Render date: 2024-04-24T05:29:36.325Z Has data issue: false hasContentIssue false

Electromagnetic Interference Shielding Reaching 130 Db Using Flexible Graphite

Published online by Cambridge University Press:  10 February 2011

D.D.L. Chung Xiangcheng Luo*
Affiliation:
Composite Materials Research Laboratory, State University of New York at Buffalo, Buffalo, NY 14260–4400, U.S.A.
Get access

Abstract

Electromagnetic interference (EMI) shielding effectiveness reaching 130 dB at 1 GHz was achieved by using flexible graphite (Grafoil). Due to the resilience of flexible graphite, it is particularly attractive as an EMI gasket. The high shielding effectiveness is due to the large specific surface area and large skin depth. In contrast, the shielding effectiveness was only 90 dB for polycrystalline graphite of low specific surface area.

Type
Research Article
Copyright
Copyright © Materials Research Society 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Murthy, Mal, 4th Int. SAMPE Electronics Conference, Vol. 4 (Electronic Materials – Our Future), edited by Allred, Ron W., Martinez, Robert J. and Wischmann, Ken B., 1990, p. 806818.Google Scholar
2 Bell, J.A.E. and Hansen, G., 24th Int. SAMPE Technical Conference, 1992, p. 19021911.Google Scholar
3 Atkins, D.J., Miller, J.A. and Sanders, J.D., 8th Int. Conf. Electromagnetic Compatibility, Electronics Division, Institution of Electrical Engineers, London, 1992, p. 100107.Google Scholar
4 Bigg, D.M., Adv. Polym. Technol. 4, 255 (1984).Google Scholar
5 Bigg, D.M., Polym. Compos. 7, 69 (1986).Google Scholar
6 Dixon, D.S. and Masi, J.V., SAMPE J. 25, 31 (1989).Google Scholar
7 Shane, J.H., Russell, R.J. and Bochman, R.A., US Patent 3 404 061 (1968).Google Scholar
8 Huang, Z., Runhua Yu Mifeng 6, 2832 (1981).Google Scholar
9 Shi, L. and Fan, Y., Runhua Yu Mifeng 27, 1724, 70 (1981).Google Scholar
10 Flitney, R.K., Tribology Int. 19, 181 (1986).Google Scholar
11 Chung, D.D.L., J. Mater. Sei. 22, 4190 (1987).Google Scholar
12 Bates, R., Spence, S., Rowan, J. and Hanrahan, J., 8th Int. Conf. Electromagnetic Compatibility, Electronics Division, Institution of Electrical Engineers, London, 1992, p. 246250.Google Scholar
13 Catrysse, J.A., 8th Int. Conf. Electromagnetic Compatibility, Electronics Division, Institution of Electrical Engineers, London, 1992, p. 251255.Google Scholar
14 Annis, G.A., Hoge, W.C. Jr. and Welch, R.L., U.S. Patent 5,436,803 (1995).Google Scholar
15 Panayappan, R. and Cooper, J.C., U.S. Patent 5,364,574 (1994).Google Scholar