Summary
International Symposium on Antennas and Propagation
2008
Session Number:4B13
Session:
Number:4B13-2
Evaluation of Dielectric Sample with Spacer in Rectangular Waveguide
T. Sawai, H. Miyagawa, K. Wakino, Y. D. Lin, C. W. Kuo, T. Kitazawa,
pp.-
Publication Date:2008/10/27
Online ISSN:2188-5079
Summary:
Broadband microwave wave applications require an accurate data about material characteristics. Many techniques have been reported to evaluate the electromagnetic properties of material with loss using waveguides, coaxial lines and cavities. Recently, we proposed the broadband measurement method of complex permittivity r r r ε? = ? ε ε ′ j ′′, where the sample may occupy only the part of the waveguide cross section to get the adequate signal level of S parameters [1]. The method enables to evaluate the high dielectric constant material that may have the low or somewhat high loss. To keep a constant spacing between the sample and waveguide wall that is important to get the reproducible data, the well-defined spacer is attached to support the sample. In this paper, we will extend the method of [1] to evaluate the sample with spacer in rectangular waveguide. The method is based on the hybrid electromagnetic theory, the extended spectral domain approach combined with the mode-matching method (ESDMM) [2].