| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna with a simple structure capable of suppressing generation of cross polarization and without requiring a specific circuit and the like for suppressing the generations. SOLUTION: The antenna comprises a square patch 1, a ground body 2, an inductive board 3 provided between the patch 1 and the ground body 2, a first feed circuit 4a feeding power to the patch 1 for radiating electric waves of a first linearly polarized wave, and a second feed circuit 4b for feeding power to the patch 1 for radiating waves of a second linearly polarized wave intersecting the first linearly polarized wave, wherein a first feeding point and a second feeding point are determined in such manner that an angle which an axis 7a for connecting the centers of the first feeding point and of a feed patch forms with an axis 7b connecting the centers of the second feed point and of the feed patch is larger than 90°, and the axis 7a and the axis 7b are defined so as not to become respectively parallel with the first linearly polarized wave and the second linearly polarized wave, and the antenna radiates the first and the second linearly polarized wave. COPYRIGHT: (C)2003,JPO
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