| 摘要 |
PURPOSE: A tree branch type antenna and an assembly structure thereof are provided to improve performance of an antenna by forming the antenna for relay having a characteristic of broad bandwidth. CONSTITUTION: A connector for an antenna system is installed at a part(112) of a base portion(110). A connection bar(130) is used for connecting any one of unit antenna elements(128,129). A cover portion(140) is installed at the base portion(110). The unit antenna elements(128,129) have the same shape. The unit antenna element(129) is formed with a body portion(120) including the first end portion(129-1) and the second end portion(129-2) and branch elements(124,125,126) of odd number. The first end portion(129-1) of the unit antenna element(129) is fixed to the base portion(110) by a screw. One end portion(131) of the connection bar(130) is connected to a hole(h1) of the body portion(120).
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