| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device and a sector antenna device, which satisfy sufficient back lobe characteristics while considering mechanical strength and mutual coupling between element antennae. SOLUTION: In the antenna device 11a which uses dipole antennae 1 as an element antenna, the two dipole antennae 1 are arranged in parallel with each other by mutually adjusting positions for the direction of an axis 10 at intervals d1 in the directions perpendicular to the direction of the axis 10, and in excitation conditions, excitation amplitude ratio is used as a positive number that is less than 1. COPYRIGHT: (C)2011,JPO&INPIT
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