ANTENNA OF MULTICHANNEL SATELLITE COMMUNICATION LINK

摘要

PROBLEM TO BE SOLVED: To provide an antenna for multipath satellite communication link by performing spread spectrum communication between a terminal with at least one antenna element which is held by a first foundation structure and a plurality (N) of second foundation structures and a low-orbiting satellite. SOLUTION: An antenna 70 has a foundation structure 72 which has a main surface set at a first angle (for example, 90 deg.) from the axis perpendicular to the ground surface and a plurality N (for example, 6) of local main surfaces 74 arranged at a second angle (for example, 45 deg.) from the main surface. Each foundation structure 74 has a normal line directed to the outside from its local main surface and the normal line is set at a third angle (for example, 60 deg.) from the outward normal line of the structure 74 around the axis. The outward normal line of each structure 74 is arranged in a direction in which the line is separated from the axis. At least one antenna element 76 is held by the structures 72 and 74 and can perform spread spectrum communication with at least one low-orbiting satellite and the terminal within a wide range of the angle of elevation of the satellite.