| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an antenna having the directivity of a wide angle range.SOLUTION: A waveguide 11 for propagating a radio wave, and a radio wave input/output part 12 for transmitting (emitting) the radio wave propagating the waveguide 11 to the outside (into air) or receiving (incidence) the radio wave from the outside are provided. The radio wave input/output part 12 includes an input/output area 12a located at the outside of the waveguide 11, a propagation area 12b provided inside the waveguide 11, and further a matching area 12c connected to the propagation area 12b and provided inside the waveguide 11, along the center axis of the waveguide 11, which are made of a dielectric substance.</p> |
