Complex permittivity and permeability of iron-based composite absorbers measured by cavity perturbation method in X -band frequency range

R. B. Yang, C. Y. Tsay, D. S. Hung, W. F. Liang, Y. D. Yao, C. K. Lin

研究成果: 雜誌貢獻文章

32 引文 斯高帕斯(Scopus)

摘要

A cavity perturbation resonance technique is used to determine the complex permittivity and permeability of iron-based composite absorbers prepared by mixing various weight percentages of carbonyl iron powder with epoxy as the matrix. The complex permittivity (ε′ -j ε″) and permeability (μ′ -j μ″) are measured around X -band (7-12.5 GHz for permittivity and 7.5-14 GHz for permeability) by the cavity perturbation resonance technique and the results are compared with those obtained by the transmission/reflection method. Experimental results show that the average differences of real parts of permittivity (ε′) and real and imaginary parts of permeability (μ′ and μ″) measured by these two techniques are less than 10%. The differences in ε″, however, is apparently higher than the others. As a general trend, the difference increases with increasing weight percentage of carbonyl iron.
原文英語
文章編號07A528
期刊Journal of Applied Physics
105
發行號7
DOIs
出版狀態已發佈 - 2009
對外發佈Yes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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