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为能够较好的计算混合介质等效复介电常数和复磁导率, 提出了一种基于等效电路理论的阻抗模拟方法.导出了材料的电磁参数与材料容抗、感抗之间的对应关系, 并建立了能够较完整、精确地刻画实际复合材料的模型.通过求解混合介质的等效阻抗, 进一步反演其等效电磁参数.将计算结果与经典理论公式以及基于有限差分的数值方法进行了比较, 结果都符合得很好, 说明该方法可以用于计算材料的等效电磁参数.另外, 引入薄膜层结构来刻画表面效应等因素, 使得计算结果更加符合实验结果, 弥补了经典公式在这方面的不足, 同时也体现了该方法在刻画实际模型时所具有的优势.In order to calculate the equivalent EM parameter of mixed medium, in this paper, we proposes a new method of impedance simulation based on an equivalent circuit. First, the relationship between electromagnetic parameters and capacitance, inductance of material is set up, and then the model that can describe real composite accurately is established. The equivalent EM parameter could be obtained by calculating the equivalent impedance of mixed medium. Comparing this method with the classical formulae and finite-difference numerical method, it is proved that it can be used to calculate the equivalent EM parameter of material. In addition, introducing thin films to simulate the factor such as surface effect, the result of calculation would match with experimental results perfectly. This method has more advantages than classical formulae and numerical method.
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Keywords:
- equivalent EM parameter /
- impedance simulation /
- effective circuit /
- mixed medium
[1] Nie Y, He H H, Gong R Z 2007 Journal of Magnetism and Magnetic Materials 310 13
[2] Sang-Eui Lee, Oyoung Choi, H Thomas Hahn 2008 Journal of Applied Physics 104 1
[3] Andrey N L, Konstantin N R 2009 Journal of Magnetism and Magnetic Materials 321 2082
[4] Ding S J, Ge D B, Shen N 2010 Acta Phys. Sin. 59 943 (in Chinese) [丁世敬, 葛德彪, 申宁 2010 59 943]
[5] Sun J, Huang M, Peng J H, Niu W W, ZhangL B 2010 The 9th International Symposium on Antennas, Propagation and EM Theory Guangzhou, November 29-December 2, 2010 p701
[6] Lakshmi K, John Honey, Mathew K T 2009 Acta Materialia 57 371
[7] Chen X L, Cheng Y H, Wu K, Wu S N 2009 Progress in Natural Science 19 532 (in Chinese) [陈小林, 成永红, 吴锴, 吴胜男 2009 自然科学进展 19 532]
[8] Pan H L, Chen J K, Zhao Z J, He J K, Ruan J Z, Yang X L, Yuan W Z 2008 Acta Phys. Sin. 57 3230 (in Chinese) [潘海林, 程金科, 赵振杰, 何家康, 阮建中, 杨燮龙, 袁望治 2008 57 3230]
[9] Zhou K S, Huang K L, Kong D M, Li Z G 2001 J. Cent. Southuniv. Technol. 32 617 (in Chinese) [周克省, 黄可龙, 孔德明, 李志光 2001 中南工业大学学报 32 617]
[10] Luo M 2009 Ph. D. Dissertation (Wuhan: China University of Geosciences) (in Chinese) [骆淼 2009 博士学位论文 (武汉:中国地质大学)]
[11] Cao M S, Gao Z J, Zou G Z, Zhao Y N 2004 Journal of Aeronautical Materials 24 15 (in Chinese) [曹茂盛, 高正娟, 邹桂真, 赵玉娜 2004 航空材料学报 24 15]
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[1] Nie Y, He H H, Gong R Z 2007 Journal of Magnetism and Magnetic Materials 310 13
[2] Sang-Eui Lee, Oyoung Choi, H Thomas Hahn 2008 Journal of Applied Physics 104 1
[3] Andrey N L, Konstantin N R 2009 Journal of Magnetism and Magnetic Materials 321 2082
[4] Ding S J, Ge D B, Shen N 2010 Acta Phys. Sin. 59 943 (in Chinese) [丁世敬, 葛德彪, 申宁 2010 59 943]
[5] Sun J, Huang M, Peng J H, Niu W W, ZhangL B 2010 The 9th International Symposium on Antennas, Propagation and EM Theory Guangzhou, November 29-December 2, 2010 p701
[6] Lakshmi K, John Honey, Mathew K T 2009 Acta Materialia 57 371
[7] Chen X L, Cheng Y H, Wu K, Wu S N 2009 Progress in Natural Science 19 532 (in Chinese) [陈小林, 成永红, 吴锴, 吴胜男 2009 自然科学进展 19 532]
[8] Pan H L, Chen J K, Zhao Z J, He J K, Ruan J Z, Yang X L, Yuan W Z 2008 Acta Phys. Sin. 57 3230 (in Chinese) [潘海林, 程金科, 赵振杰, 何家康, 阮建中, 杨燮龙, 袁望治 2008 57 3230]
[9] Zhou K S, Huang K L, Kong D M, Li Z G 2001 J. Cent. Southuniv. Technol. 32 617 (in Chinese) [周克省, 黄可龙, 孔德明, 李志光 2001 中南工业大学学报 32 617]
[10] Luo M 2009 Ph. D. Dissertation (Wuhan: China University of Geosciences) (in Chinese) [骆淼 2009 博士学位论文 (武汉:中国地质大学)]
[11] Cao M S, Gao Z J, Zou G Z, Zhao Y N 2004 Journal of Aeronautical Materials 24 15 (in Chinese) [曹茂盛, 高正娟, 邹桂真, 赵玉娜 2004 航空材料学报 24 15]
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