| 摘要 |
PROBLEM TO BE SOLVED: To obtain good radiation characteristics even under an environment of limited installation space. SOLUTION: In an antenna unit where a plurality of horn antennas are arranged radially around the central axis, the shape of the horn antennas is bent such that the feeding portions of the plurality of horn antennas are separated, respectively, from the central axis. For example, the shape of the horn antennas is bent such that the feeding portions of the horn antennas are arranged substantially in parallel with the central axis and their apertures are arranged on a plane substantially perpendicular to the central axis. COPYRIGHT: (C)2009,JPO&INPIT
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