Effect of grain direction on transmittance of 100-GHz millimeter wave for hinoki (Chamaecyparis obtusa)
Effect of grain direction on transmittance of 100-GHz millimeter wave for hinoki (Chamaecyparis obtusa)
复制标题
纹理方向对扁柏 (Chamaecyparis obtusa) 100 GHz 毫米波透过率的影响
DOI:
10.1007/s10086-010-1160-z
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发表时间:
2011
影响因子:
2.9
通讯作者:
Tadao Nagatsuma
中科院分区:
文献类型:
--
作者:
Soichi Tanaka;Yuko Fujiwara;Yoshihisa Fujii;Shogo Okumura;Hiroyoshi Togo;Naoya Kukutsu;Tadao Nagatsuma
The attenuation coefficients of 100-GHz millimeter waves polarized linearly were measured for cross-cut, quarter-sawn, and flat-sawn boards of hinoki (Chamaecyparis obtusa) that were 0.2–2.0 cm thick. This was done to examine the applicability of free-wave propagation theory for applying electromagnetic waves to wood. It was found that the transmittance of a millimeter wave through the specimen boards was lower when the fiber direction of a board was parallel to the direction of the electric field of the incident wave than when the fiber direction was perpendicular to the electric field, and there was little difference in the transmittance between the tangential and radial directions for the former case. These findings can be quantitatively explained by using propagation theory and the dielectric properties of wood.
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1994
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