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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Leaky-wave characteristics from double periodic composite right-/left-handed transmission lines
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Leaky-wave characteristics from double periodic composite right-/left-handed transmission lines

机译：双周期复合右手/左手传输线的泄漏波特性

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摘要

A double periodically loaded leaky-wave antenna (LWA) based on composite right-/left-handed transmission lines is proposed. Dispersion characteristics and the radiation efficiency are investigated with the help of a singular perturbation procedure, and the radiation efficiency is numerically estimated as a function of the antenna length. In addition to the lefthanded (LH) characteristic of the structure, a novel leaky-wave radiation is obtained below the LH passband with narrow bandwidth, and this point is focused on the leaky-wave phenomenon because of space harmonics of the Bragg reflection from double periodically loaded inductances and/or series interdigital capacitances. Compact LWAs are designed using microstrip lines with double/single periodically loaded inductances and/or capacitances. Radiation characteristics are measured for the investigated compact antenna, and the results demonstrate the expected novel leaky-wave behaviour.
机译：提出了一种基于右手/左手复合传输线的双周期加载漏波天线（LWA）。借助奇异摄动程序研究了色散特性和辐射效率，并根据天线长度对辐射效率进行了数值估算。除了该结构的左手（LH）特性，还在带宽较窄的LH通带以下获得了新颖的泄漏波辐射，并且由于双倍布拉格反射的空间谐波，这一点集中在泄漏波现象上周期性加载的电感和/或串联叉指电容。紧凑型LWA是使用具有双/单个周期性负载电感和/或电容的微带线设计的。测量了所研究的紧凑型天线的辐射特性，结果证明了预期的新颖漏波特性。

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