Measurement of the Shielding Properties of Composite Materials: Comparison of the Dual TEM and Noncontact Probe Methods

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Authors
  1. Gardner, C.L.
  2. Poissant, Y.F.C.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
A comparative study has been made of the use of a noncontact probe method and the dual TEM cell method for the measurement of the surface impedance of composite materials. The results show that the values of surface impedance obtained by the two methods are in substantial agreement when the samples are pseudo-isotropic. Very different results are obtained by the two methods, however, when the samples are anisotropic because the two techniques induce a different flow of current (circular in the case of the noncontact probe method and laminar in the case of the dual TEM method). Comparison of the results from the two methods has shed light on the structure of carbon composite materials.
Date of publication
01 Nov 1998
Number of Pages
9
Reprinted from
IEEE Transactions on Electromagnetic Compatibility, vol 40, no 4, 1998, p 364-369
DSTKIM No
99-01044
CANDIS No
511027
Format(s):
Hardcopy;Document Image stored on Optical Disk

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