| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a longitudinally long UHF band antenna capable of reducing a swept area while ensuring a sufficient gain. <P>SOLUTION: Reflection elements 21 are provided at predetermined intervals on the back of a radiation element 11. In the radiation element 11, antenna elements 12a, 12b are horizontally formed on both upper and lower sides using a plate-like conductive member, the antenna elements are coupled by a coupling line 13, and cavity parts 14a, 14b are formed in upper and lower parts. The reflection element 21 is frame-shaped using a plate-like conductive member, reflection element parts 22a, 22b are formed at upper and lower sides, and side elements 23a, 23b are formed at both sides. The side elements 23a, 23b include holes 24a-24d and are folded backward at 90°. At a center position on the back of the reflection element 21, a plug 41 is mounted to a plug mount plate 26 provided between the side elements 23a, 23b, and connected to feed points of power feeding parts 16a, 16b provided on the coupling line 13 by a coaxial cable. <P>COPYRIGHT: (C)2012,JPO&INPIT |
