| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sector antenna that can substantially equalize beamwidths for different frequency bands and widen a beamwidth for a higher frequency band when transmitting/receiving horizontally polarized waves in a plurality of frequency bands. <P>SOLUTION: A sector antenna 10 includes: frequency-shared dipole elements 11 for transmitting/receiving horizontally polarized waves in a plurality of frequency bands; a first reflector 12 arranged along the frequency-shared dipole elements 11 and apart from the frequency-shared dipole elements 11 to reflect the horizontally polarized waves from the frequency-shared dipole elements 11; and a pair of second reflectors 13n, 13n arranged in a space between the frequency-shared dipole elements 11 and the first reflector 12 in a nonconducting state and raised outside both tips 14, 14 of the frequency-shared dipole elements 11. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
