Beam-Scanning Performance of Leaky-Wave Slot-Array Antenna on Variable Stub-Loaded Left-Handed Waveguide
Beam-Scanning Performance of Leaky-Wave Slot-Array Antenna on Variable Stub-Loaded Left-Handed Waveguide
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DOI：
10.1109/tap.2008.2007278
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发表时间：
2008-12
影响因子：
5.7
通讯作者：
T. Ikeda;K. Sakakibara;T. Matsui;N. Kikuma;H. Hirayama
中科院分区：
文献类型：
--
作者：
T. Ikeda;K. Sakakibara;T. Matsui;N. Kikuma;H. Hirayama
超材料是一种有效相位常数可以由传输线内部物理周期结构控制的人造材料。有效相位常数被设计为通过改变周期性结构的尺寸而获得的任何值，该值可以是小的、大的、近似为零的或负的。超材料的使用有望实现天线的小型化和辐射方向图的广泛设计灵活性。在这项工作中，我们开发了一个漏波缝隙阵列天线的可变介质加载左手波导。测量了天线的辐射方向图，观察了左手传输线的特性。此外，通过改变波导上短截线的长度，实验证实了光束扫描的性能。
Metamaterial is an artificial material in which the effective phase constant can be controlled by the internal physical periodic structure of the transmission line. Effective phase constant is designed to be of any value, which may be small, large, approximately zero, or negative, attained by changing the dimensions of the periodic structure. Miniaturization of the antenna and wide design flexibility of radiation patterns can be expected from the use of metamaterials. In this work, we developed a leaky-wave slot-array antenna on a variable stub-loaded left-handed waveguide. The radiation pattern of the fabricated antenna was measured and the characteristics of the left-handed transmission line were observed. Moreover, performance of beam-scanning by changing the length of the stubs on the waveguide was confirmed experimentally.