To achieve high sensitivity of a reception system while preventing superposition of the strain component due to interference wave, or the like, on an input signal, and to continue operation even in a situation where a filter is not cooled to cryogenic state.
An antenna device includes a normal conducting line 613 composed of a normal conducting material, and configured by forming a plurality of branch lines by stubs in the main line, a plurality of band elimination filters 6121-612m corresponding to a plurality of transmission frequencies, respectively, and bonding wires 6141-614m for connecting the plurality of band elimination filters 6121-612m and the plurality of branch lines, respectively. Upon occurrence of interference of unwanted waves, the band elimination filter 612 suppresses the signals due to unwanted waves by making the plurality of band elimination filters 6121-612m, corresponding to the frequency of the unwanted waves, function.
SHINONAGA MITSUYOSHI
| JP2008113450A | 2008-05-15 | |||
| JPH02101801A | 1990-04-13 |
Yoshihiro Fukuhara
Makoto Nakamura
Nobuhisa Nogawa
Toshio Shirane
Takashi Mine
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Takao Ako
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori