Frequency-dependent complex permittivity and permeability of iron-based powders in 2-18 GHz

R. B. Yang, S. D. Hsu, C. K. Lin

研究成果: 雜誌貢獻文章同行評審

33 引文 斯高帕斯(Scopus)

摘要

A novel approach is presented to investigate the complex permittivity (ε′ -j ε″) and permeability (μ′ -j μ″) of iron-based powders in the frequency range of 2-18 GHz. The effective permeability and permittivity of carbonyl iron-epoxy composites for various volume fractions are measured by using the transmission/reflection method. A genetic algorithm is implemented with four nonempirical effective medium theories to obtain the complex permittivity and permeability of the carbonyl iron powders in the corresponding frequency range. The use of the extracted permittivity and permeability of the carbonyl powders with Looyenga's formula fit the experimental data well not only over a wide range of frequencies but also various concentrations of carbonyl iron.
原文英語
文章編號07A527
期刊Journal of Applied Physics
105
發行號7
DOIs
出版狀態已發佈 - 2009
對外發佈

ASJC Scopus subject areas

  • 物理與天文學 (全部)

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