Indoor Channel Measurement of 26 GHz Band UWB Communication System

We presents the results from ultra wideband propagation channel measurements in an office environment at the 26 GHz band. To evaluate the differences in a multipath environment by antenna radiation pattern, two directional types of receiver antenna were used for channel measurements. A threshold level was used to remove noise components from the measurement data and was defined as the median value of the received power before the direct path arrived + 10 dB. The delay spread was lower in the main beam area, and this lower value had a greater reach when a directional antenna with high antenna gain was used as compared to an omni-directional antenna. The influence from the multipath environment can be reduced by using a directional antenna as compared to an omni-directional antenna.