Prototype Evaluation of the 38GHz-band Lens Antenna for High Altitude Platform Station (HAPS) Ground Station System

Abstract

At a time when expectations are high for the rapid realization of broadband communications using HAPS (High-Altitude Platform Station), which can secure redundant routes over the sky, international movement toward commercialization is accelerating, environmental improvement and technological development are advancing, and their popularization is expected to expand. On the other hand, it is necessary to develop a radio system capable of providing high-speed and high-capacity circuits by using the wide-band frequency of the millimeter wave band (Q/V band) using HAPS, and to realize the improvement of frequency utilization efficiency in the millimeter wave band and the practical application of HAPS system. For this purpose, it is necessary to establish a frequency sharing technology to reduce the effect of radio interference with terrestrial mobile communication systems and to realize efficient use of frequencies. In this paper, as one of the research and development of three dimensional non-terrestrial communication network (NTN) using HAPS, the research result of lens antenna of the 38 GHz band ground station antenna system for HAPS is shown.