提出了一种确定电磁带隙结构慢波波长的分析方法,利用电磁带隙结构支持慢波传播的特性,设计了一种小型化微 带天线。以“*”型电磁带隙结构作为接地板,增大了天线的相对电长度。天线工作于2 GHz,相对带宽为2.57%,最大 增益为5.45 dB,相比于传统天线,该天线的尺寸减小了40%,带宽有了一定的提高。最后,进行了天线的实物制作和测 试,天线的实测结果和仿真结果吻合良好。

A method to make sure wavelength of slow-wave mode of electromagnetic bandgap structures is proposed in this paper. A kind of miniaturized microstrip antenna is designed using the characteristic that electromagnetic bandgap structures support slowwave propagation. “*”shapes electromagnetic bandgap structures are used as ground plane to increase relative electrical length. This antenna works at 2 GHz, relative bandwidth is 2.57% and maximum gain is 5.45 dB, compared with conventional antenna, its area has reduced 40%, and its relative bandwidth is improved . The antenna had been fabricated and measured, measured result and simulated result agree very well.