CAJ | 학술논문

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.
장지면결함결구(DGS)인입미대천선적설계중,원본분형미대천선재5～20 GHz빈대범위내유4개해진빈솔점.유우DGS결함결구가이유효억제천선적고차모,해신형결구재5～20 GHz빈대범위내득도료량개해진빈솔점,병사득천선적증익재인입DGS결구후제고료대약2 dB.
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.