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基于左手特性的异向介质可调谐天线设计

Keywords: 异向介质,分裂谐振环,左手特性,可调谐

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Abstract:

设计了一款新型的基于异向介质的可调谐天线.通过在传统环氧板(FR4)介质基底上加载分裂谐振环阵列的方法,使介质在5.2~7.7GHz频段呈现左手特性.该设计改善了传统贴片天线体积大、工作频带窄、增益较低等缺点,并能通过改变分裂谐振环阶数调节天线的中心频率.利用高频仿真软件HFSS对所设计的天线进行了仿真,研究了天线参数与阵列间隙尺寸及阵列阶数的关系,并对天线进行了优化设计.仿真结果表明,该设计可以有效减小天线尺寸,降低回波损耗和增加工作带宽,并实现了天线的可调谐设计.

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