基于DGS的分形微带天线的设计

一种基于DGS的分形微带天线的设计

内容简介：将地面缺陷结构(DGS)引入微带天线的设计中,原本分形微带天线在5～20 GHz频带范围内有4个谐振频率点.由于DGS缺陷结构可以有效抑制天线的高次模,该新型结构在5～20 GHz频带范围内得到了两个谐振频率点,并使得天线的增益在引入DGS结构后提高了大约2 dB.

Abstract：The fractal antenna having the novel dual-band defected ground structure in the ground has been demonstrated. Between 5 GHz and 20 GHz,the resonant frequency had reduced to two after introducing DGS. The effectiveness of the DGS structure was discussed for the suppression of the higher order modes of the antenna. We could receive two resonant frequencies by the new structure,and the radiation patterns at the harmonic frequencies could be drastically improved 2 dB compared with the normal fractal antenna without the DGS structure.

作者：苏雪娟, 吴先良, 李运志,

关键词：DGS结构, 带宽扩展, 微带天线,