| 摘要 |
PROBLEM TO BE SOLVED: To provide an array antenna device capable of preventing reduction of antenna gain in a wide-angle direction even when the frequency of an electric wave for power supplying is changed.SOLUTION: The array antenna device is arranged so that a metal pole 7 erects vertically relative to the surface of a ground conductor plate 1 being positioned between neighboring cavity antennas 6 in a Y-direction (or, between an edge of the ground conductor plate 1 and a cavity antenna 6). The metal pole 7 is arranged so that the height dimension thereof is set to a length which is longer than a quarter of a wavelength corresponding to the band end at the low frequency side in the frequency bandwidth in the wavelength corresponding to the frequency bandwidth of the electric wave supplied by the feeding probe 4.SELECTED DRAWING: Figure 1 |
