| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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A New Method to Calculate the Degree of Electromagnetic Impedance Matching in One-Layer Microwave Absorbers |
| MA Zhi, CAO Chen-Tao, LIU Qing-Fang, WANG Jian-Bo** |
Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000
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| Cite this article: |
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WANG Jian-Bo, MA Zhi, LIU Qing-Fang et al 2012 Chin. Phys. Lett. 29 038401 |
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Abstract A delta-function method is proposed to quantitatively evaluate the electromagnetic impedance matching degree. Measured electromagnetic parameters of α−Fe/Fe3B/Y2O3 nanocomposites are applied to calculate the matching degree by the method. Compared with reflection loss and quarter-wave principle theory, the method accurately reveals the intrinsic mechanism of microwave transmission and reflection properties. A possible honeycomb structure with promising high-performance microwave absorption, devised according to the method, is also proposed.
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| Keywords:
84.37.+q
41.20.Jb
77.22.Ch
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Received: 25 July 2011
Published: 11 March 2012
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| PACS: |
84.37.+q
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(Measurements in electric variables (including voltage, current, resistance, capacitance, inductance, impedance, and admittance, etc.))
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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77.22.Ch
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(Permittivity (dielectric function))
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