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This paper described for the propagation characteristics due to the rough surface of an object at millimeter wave. The analysis used the high frequency asymptotic approaches such as the ray tracing mechanism and Kirchhoff approximation. In results, the roughness of the surface at millimetre wave may make the deep fading. Therefore, the accuracy of the surface is so important to estimate the radio...
The reflection characteristics of building materials at the millimeter (MM) wave band are needed for development MM-wave application such as Giga-bytes indoor communication systems. Because reflection characteristics in the MM-wave band is dependent on the condition of measurement environments and has so little measurement data. To enhance these problems, we have studied propagation characteristics...
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