| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a horn antenna with frequency selectivity by making a flare constituting a horn antenna a slit flare. SOLUTION: The slit flare part 52 functions as a flare only in a specific frequency by arraying metallic plates at prescribed intervals and constituting regular slits between them to adjust the intervals between the slits. Consequently the integrated horn antenna with frequency selectivity is obtained. In addition, if using a shared flare with a plate flare part 51 and the slit flare part 52, in the case of transmitting and receiving plural frequencies, the directional characteristic of each frequency can be differentiated from each other by differentiating the effective aperture for each frequency by utilizing the frequency selectivity of the slits. Consequently the horn antenna of different characteristics of each frequency is constituted in spite of being an integrated type.</p> |
