一种具有陡峭边带的宽带带通滤波器设计
Design of Wideband Band-pass Filter with Sharp Roll-off Skirts
  
DOI:
中文关键词:  多模谐振器,宽带滤波器,宽阻带抑制,高选择性
英文关键词:multi-mode resonator, wideband filter, wide stopband suppression, high selectivity
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作者单位
熊 阳1 张 伟2 王荔田3 1.中国西南电子技术研究所,成都610036
2.中国电子科技集团公司重庆声光电有限公司,重庆400060
3.南开大学电子信息与光学工程学院,天津300350 
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中文摘要:
      基于一种新型的多模谐振器设计了一款宽带带通滤波器,该多模谐振器由鱼骨形谐振器及中心加载倒T形谐振器构成。滤波器的中心频率位于2.47GHz, 相对带宽为100%。滤波器具有极高的频率选择性,其边带滚降速度分别为232dB/GHz 和168dB/GHz。此外,滤波器还具有较低插入损耗0.4 dB,紧凑的电路尺寸以及宽阻带抑制能力。
英文摘要:
      In this paper, a wideband bandpass filter is presented based on a novel multi-mode resonator. The proposed multi-mode resonator is composed of a fish bone resonator and an inverted T-shaped resonator. The center frequency of wideband bandpass filter is located at 2.47 GHz and the fractional bandwidth (FBW) of this filter is 100%. The filter is of super high selectivity with roll-off rates of 232dB/GHz and 168dB/GHz in lower sideband and higher sideband, respectively. Additionally, the filter possesses the merits of low insertion loss 0.4 dB, compact size and wide stopband suppression.
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