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一种用于专用短程通信的多波束微带天线阵列

, PP. 103-108

Keywords: 专用短程通信,动态通信区域,多波束微带天线阵列,方向图,邻道干扰,跟车干扰

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Abstract:

对目前不停车收费DSRC系统中车道上的通信区域需求进行了分析,为了抑制RSU与OBU通信中经常出现的邻道干扰和跟车干扰,提出了新的动态通信区域方案,将车道上的通信区域在纵向分成了0~4m、3~7m和6~10m通信区域,根据车辆在车道上所处的位置来选择合适的通信区域。为了实现这种动态通信区域方案,提出并设计了一种6×8的多波束微带天线阵列作为RSU的收发天线,该天线阵列通过在馈电网络中加载射频开关,再控制开关的通断状态,使天线的波束指向不同的方向,分别覆盖车道上纵向0~4m、3~7m和6~10m区域。动态通信区域的测试结果和预期的分析结果基本一致,测试结果表明该方案能抑制邻道干扰和跟车干扰,并提高RSU与OBU通信的稳定性。

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