To provide an antenna device which allows a coaxial cable for feeding from the side of a radio device to be directly connected to a plug of a feeding part thereof, improves the reliability, and reduces costs.
In a Yagi type antenna, a feeding part 30 of a radiating element 2 comprises a feeding part main body 31 and an N-J type plug 6, and is attached to a feeding part support base 32 by a bolt 33. The feeding part support base 32 is fixed to an antenna arm 1 by a bolt 34 and a nut 35. In this case, the feeding part 30 is so configured that the feeding part main body 31 is rotated to the feeding part support base 32 by loosening the bolt 33. The feeding part main body 31 is rotatably attached to the feeding part support base 32, whereby a coaxial cable 37 for feeding from the radio device is directly connected to the N-J type plug 6 of the feeding part 30 to allow waterproofing treatment.
Kurata Masatoshi
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Ryo Hashimoto
Tetsuya Kazama
Shoji Kawai
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen