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分析了电磁带隙结构的原理及其特有的抑制表面波的特性,通过在原有贴片天线上加载结构紧凑的叉型电磁带隙结构来设计天线,并对中心频率为7.5GHz的叉型电磁带隙结构微带天线进行了仿真研究。结果表明,加载叉型电磁带隙结构以后,微带天线的增益提高2dB以上,天线方向图改善。研究结果对实现高效紧凑天线具有参考价值。
The principle of the electromagnetic band gap structure and its characteristic of suppressing the surface wave are analyzed. The antenna is designed by loading a compact fork-type electromagnetic bandgap structure on the original patch antenna, and the fork-type power supply with the center frequency of 7.5 GHz The microstrip patch antenna has been simulated. The results show that the gain of the microstrip antenna increases more than 2dB after loading the fork-type electromagnetic band gap structure, and the antenna pattern is improved. The research results have reference value for realizing efficient and compact antenna.