| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sector antenna capable of an equal beam width between different frequency bands and a wider beam width in a higher frequency band, when transmitting and receiving horizontal polarization in a plurality of frequency bands.SOLUTION: A sector antenna 10 includes: a frequency sharing dipole element 11 for transmitting and receiving the horizontal polarization in the plurality of frequency bands; a first reflector plate 12 disposed along and apart from the frequency sharing dipole element 11 so as to reflect the horizontal polarization from the frequency sharing dipole element 11; and a pair of second reflector plates 13n, 13n disposed in a space between the frequency sharing dipole element 11 and the first reflector plate 12, and disposed upright on the outside of both top ends 14, 14 of the frequency sharing dipole element 11. The pair of second reflector plates 13n, 13n adjusts the beam width of the horizontal polarization in the plurality of frequency bands.</p> |
