A new-type attenuation material of 3 mm wave the ultra-thm electric cmp was made
from flaky crystal graphite by means of the process of wet ball milling. The basic physical property was studied, the dynamic 3mm wave attenuation capability was tested for the chip. Based on the radar scatter cross section theory of millimeter wave interference materials, the analysis and estimation result for skin depth, surface resistivity, heat wastage resistance of the chip shows that the absorption atten?uation makes up about 35.6 % of the total attenuation and is obviously superior to that of chaff. The calculation results of extinction parameters of the chip in 3 mm waveband by the Mie theory show that the absorption is leading factor at smaller partial size parameter k ; the scattering is leading factor at bigger k ; the absorption makes up 42 % of the total attenuation at half wavelength (particle size 2 r = 1.5 mm).
Key words
non-metallic inorganic material /
3 millimeter wave /
radar cross section /
extinction /
atten?uation /
absorption
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Footnotes
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