| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna capable of being utilized for the transmission/ reception of the signals of a microwave band, being miniaturized, easily adjusting the coupling degree of probes for coupling and disposing the probes for coupling to a ridge waveguide in a rigid and stable posture. SOLUTION: In this antenna, in the ridge waveguide 12 where a ridge 10 is formed in a pipe axial direction on the inner side of a wide width surface, the plural probes 14 for coupling are made to pass through the ridge 10 and disposed perpendicularly to the pipe axial direction and the wide width surface, radiation elements 18 are provided on the outer side end of the probes 14 for coupling and metal disks 20 parallel to a pipe inner wall facing an inner side end provided with a wide area are provided. By adjusting the distance of the metal disks 20 and the pipe inner wall and adjusting a capacity value generated between them, the coupling degree of the probes 14 for coupling is adjusted corresponding to an array position.
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