| 摘要 |
PURPOSE: An antenna is provided to maximize frequency co-use efficiency by remotely controlling a vertical/horizontal tilting angle and a vertical/horizontal half power beam width of the antenna. CONSTITUTION: An antenna comprises many radiating element arrays(1-4). Each of the radiating element arrays(1-4) includes 8 radiating elements(1a-4a) that are vertically arranged at an interval. A vertical beam width of the antenna is determined by the interval and the number of the radiating elements(1-4). A horizontal beam width of the antenna is determined by the distance of the radiating elements(1a-4a) and the number of the antenna element arrays. When one antenna covers 120° in a three sector case, two radiating element arrays(1-4) are used. When one antenna covers 60° in a six sector case, four or five radiating element arrays(1-4) are used. Four radiating element arrays(1-4) include 8 radiating elements(1a-4a), respectively. Outputs of a first to a fourth vertical tilting phase controllers(5-8) are connected to the inputs of the radiating element arrays(1-4).
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