This article presents the design of a planar high gain and wideband antenna using a negative refractive index multilayer superstrate in the X‐band. This meta‐antenna is composed of a four‐layer superstrate placed on a conventional patch antenna. The structure resonates at a frequency of 9.4 GHz. Each layer of the metamaterial superstrate consists of a 7 × 7 array of electric‐field‐coupled resonators, with a negative refractive index of 8.66 to 11.83 GHz. The number of layers and the separation of superstrate layers are simulated and optimized. This metamaterial lens has significantly increased the gain of the patch antenna to 17.1 dBi. Measurements and simulation results proved about 10 dB improvement of the gain.

中文翻译：

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用于X波段应用的新型高增益多层负折射率超材料超材料天线的设计与制造

本文介绍了在X波段中使用负折射率多层覆层的平面高增益宽带天线的设计。该元天线由放置在常规贴片天线上的四层覆板组成。该结构以9.4 GHz的频率谐振。超材料上层的每一层都由一个7×7的电场耦合谐振器阵列组成，其负折射率为8.66至11.83 GHz。模拟并优化了层数和覆盖层的分离。这种超材料透镜已将贴片天线的增益显着提高到17.1 dBi。测量和仿真结果证明增益提高了约10 dB。