To provide an antenna device that can reduce processing cost and antenna weight while maintaining the antenna directivity at the same level as the conventional antenna and can simplify the shape.
A reflection board 21 includes a bent portion 22a on each side. The bent portions 22a are each made from a rod-shaped conductor shaped into a frame, and each comprises horizontal elements 24 provided at the top and bottom and a vertical element 23 provided between the horizontal elements 24. An antenna element 25 is provided at the center of the front surface of the reflection board 21, being separated by a prescribed distance H from the front surface. The antenna element 25 is made using, for example, a dipole antenna element, and includes a power feed section 27 at the center thereof.
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WAKAO YOSHIICHI
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Tetsuya Kazama
Katsumura Hiro
Shoji Kawai
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen