一种基于左手介质的新型介质栅漏波天线的理论分析

摘要

A new grating leaky wave antenna based on left-handed material was proposed and its radiation characteristics were carefully and rigorously analyzed by using a method which combined the rigorous mode matching procedure with multimode network method. The variations of the leakage constant with structure parameters were given in this study to show the special properties of this kind of antenna. The numerical results indicate that the new leaky wave antenna has much larger leakage constant than that of conventional one. The reason for this phenomenon is discussed.%提出了一种基于左手介质的新型介质栅漏波天线,并采用多模网络与严格模匹配相结合的方法,对该左手介质栅天线的辐射特性进行了仔细严格的分析.文中给出了漏波系数随天线结构参数变化的关系以显示该左手介质天线特有的性质.数值结果表明这种新型漏波天线比传统介质栅天线具有更强的辐射能力.讨论了产生这种现象的原因.