Characteristics Evaluation and Path Loss Measurement of Vehicle Glass Mounted Antenna for 28-GHz Band

摘要

Due to high radio waves attenuation, directional antenna is widely studied in the 28GHz band which is considered to be a promising candidate band in 5th generation mobile communication system. On the other hand, since vehicle antenna is generally demanded to be omni-directional pattern, it is considered to realize omni-directional pattern by utilizing several directional antennas witch are mounted distributedly. In that case, glass windows facing all directions of the vehicle are desirable locations for antenna mounting. However, investigation of vehicle glass mounted antenna in the high frequency band such as 28GHz is not sufficient. Therefore, we obtained fundamental antenna characteristics from experiments in which 28GHz band antennas were mounted on front, rear, and both side glass windows. As a result, it was disclosed that the influence on the antenna characteristics varied depending on each window glass. Also, we confirmed the effectiveness of the vehicle glass mounted antenna by the path loss characteristics evaluation.