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    • 1. 发明授权
    • Aircraft directional/omnidirectional antenna arrangement
    • 飞机定向/全向天线布置
    • US07385560B1
    • 2008-06-10
    • US11527353
    • 2006-09-26
    • Leo G. MaloratskyAndrew M. VeselJoseph M. Strenecky
    • Leo G. MaloratskyAndrew M. VeselJoseph M. Strenecky
    • H01Q1/28
    • H01Q1/28H01Q1/38H01Q1/42H01Q3/26H01Q9/32
    • A directional/omnidirectional antenna system is disclosed. A first printed circuit board has capacitive hats disposed thereon. Each capacitive hat is in association with one of an array of folded monopoles. A second printed circuit board has a switched beam forming network formed thereon. The switched beam forming network is configured to provide a predetermined omnidirectional antenna operation at a first switching position, and a predetermined directional antenna operation at a second switching position. Each of a plurality of feeding elements is associated with one of the folded monopoles. Each feeding element is coupled to one of the capacitive hats and to an antenna terminal. Shorting elements of the folded monopoles are coupled to the capacitive hats and to a ground plate of the antenna. A plurality of decoupling elements improve the antenna pattern for directional and omnidirectional modes and provide greater antenna gain.
    • 公开了一种定向/全向天线系统。 第一印刷电路板上设有电容式帽子。 每个电容帽与折叠单极阵列之一相关联。 第二印刷电路板具有形成在其上的切换波束形成网络。 交换波束形成网络被配置为在第一切换位置提供预定的全向天线操作,并且在第二切换位置提供预定的定向天线操作。 多个馈送元件中的每一个与折叠的单极子中的一个相关联。 每个馈送元件耦合到电容式帽子之一和天线端子。 折叠单极子的短路元件耦合到电容式帽子和天线的接地板。 多个去耦元件改善用于定向和全向模式的天线方向图,并提供更大的天线增益。