Abstract
This paper presents, the results of wideband measurements of several common building material conducted at 28 GHz, and 39 GHz in co-polar and cross-polar alignments to investigate the reflection and penetration loss at different incident angles using the wideband channel sounder developed at Durham University and narrow-beam lens antennas with 4.5 degrees beamwidth. The results show that, the lowest value of penetration loss was when the transmitter and receiver antennas are perpendicular on the material, and it was more than 30 dB (co-polar) and 20 dB (cross-polar) at angles greater than 10 degrees on either side from the zero angle for most of the tested materials.
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