Modeling of Modified Split-Ring Type Defected Ground Structure and Its Application as Bandstop Filter
作者: S. K. ParuiS. Das
刊名: Radioengineering, 2009, Vol.18 (2), pp.149
来源数据库: Directory of Open Access Journals
关键词: Microstripdefected ground structurebandstop filterelliptic filter.
原始语种摘要: The shape of a popular split-ring defected ground structure (DGS) is modified by selecting different width of the sides with respect to microstrip line. The frequency characteristics of proposed DGS unit show an attenuation zero close to the attenuation pole frequency. The unit cell is modeled by 3rd order elliptical lowpass filter and an equivalent circuit is presented accordingly. For proposed DGS, both pole and zero frequencies are obtained at lower values compared to split-ring DGS unit with uniform width. The variation of the width of the sides, parallel to microstrip line influences pole frequency. Two DGS cells with different pole frequencies cascaded under High-Low microstrip line realize a sharp and deep bandstop filter. Three-cascaded cells underneath a highlow impedance...
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  • microstrip 微波传输带
  • width 幅度
  • cascaded 叶栅状的
  • filter 过滤机
  • lowpass 低通
  • attenuation 衰减
  • Filter 过滤器
  • variation 变异
  • split 裂口
  • sides 提花织机墙板