颗粒媒质等效电磁参数的研究
STUDY OF EFFECTIVE ELECTROMAGNETIC PARAMETERS OF GRANULAR MEDIA
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摘要: 本文根据强扰动理论,导出了随机取向颗粒混合媒质等效电磁参数的计算方法。将这一理论应用于吸波材料的研究,找出了吸收剂粒子的最佳外形;获得了多粒子外形铁氧体吸波材料等效介电常数和等效磁导率的计算公式。测试数据表明,理论计算与实际测量值吻合得很好。Abstract: Based on the strong fluctuation theory, the calculating method for effective electromagnetic parameters of srochastically oriented granular media is derived. Applying the theory to study absorbed materials, the optimum shape of absorbed particles in antiradar coat-multiple shape ferrite absorbed materials is ober effective permittivity and permeability of multiple shape ferrite absorbed materials is obtained. The measured results are in good agree-ment with the calculating ones.
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Jia Baofu, Liu Shuzhang, Liu Weigan, The electromagnetic wave scattering by strong fluctuation random media, ISRAMT89, Beijing,(1989), pp. 157-160.[2]V. Varadan, IEEE Trans. on MTT, MTT-34(1986)2, 251-258.[3]贾宝富,强扰动理论及其在隐身用吸波材料研究中的应用,电子科技大学博士论文,1989年.[4] 王连祥,数学手册,人民教育出版社,1979年,第330页.[4]L. Tsang, J. A. Kong, Rvdio Science, 16 (1981)3,303-320.[5]王俊山,材料的电磁参数及其对微波吸收材料吸收性能的影响,肮空航天部第703研究所硕士论文,1988年. -
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