Abstract
In this work, the propagation loss due to difiraction and insertion losses for indoor scenario at 5.6GHz band are measured using directive antenna and a Vector Network Analyzer (VNA). It is shown that the insertion loss of a metallic door with porthole window varies from several dB due to the propagation loss via the porthole glass up to 50dB due to the difiraction by the porthole boards when the line between the transmitting antenna and receiving one is outside the porthole glass. It is shown that the insertion loss of a 12cm brick wall is 4.8dB for vertical polarization while it is 6.3dB for horizontal polarization. Also it is shown the difiraction loss due single or double concrete columns depends on the distance between the transmitting and receiving antennas.
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