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Author(s): |
Xu-liang Lü, Camouflage Teaching Group, Engineering Institute of Engineer Corps, PLA Univ. of Sci. & Tech., Nanjing, 210007, China
Zhao-yang Zeng, Camouflage Teaching Group, Engineering Institute of Engineer Corps, PLA Univ. of Sci. & Tech., Nanjing, 210007, China
Heng Liu, Camouflage Teaching Group, Engineering Institute of Engineer Corps, PLA Univ. of Sci. & Tech., Nanjing, 210007, China |
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Abstract: |
Based on the median model, numerical calculations are carried out to investigate the microwave transmission property of conductive slabs. It is found that, if the conductivity of slab samples can be chosen arbitrarily, the maximum absorption rate of slabs is always 50%, no matter what the thickness is. Further analysis shows that the maximum absorption is resulted from the interference between the microwaves reflected from different surfaces of the sample. The calculated dependence of the sample absorption on microwave frequency and on incident angles supports this conclusion. Because interference effect appears only under rigorous conditions, the calculated maximum absorption means nothing for anti-radar camouflage. A slab sample with a perfect conductor under it is recommended as a proper model for analyzing the microwave transmission properties of conductive slabs..
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