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一种具有陡峭边带的宽带带通滤波器设计
引用本文:熊,阳,张,伟,王荔田.一种具有陡峭边带的宽带带通滤波器设计[J].微波学报,2020,36(2):10-13.
作者姓名:        王荔田
作者单位: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
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。

关 键 词:多模谐振器  宽带滤波器  宽阻带抑制  高选择性

Design of Wideband Band-pass Filter with Sharp Roll-off Skirts
XIONG Yang,ZHANG Wei,WANG Li-tian.Design of Wideband Band-pass Filter with Sharp Roll-off Skirts[J].Journal of Microwaves,2020,36(2):10-13.
Authors:XIONG Yang  ZHANG Wei  WANG Li-tian
Institution:1. Southwest China Institute of Electronic Technology, Chengdu 610036, China; 2. Chongqing Acoustic-Optic-Electronic Company of CETC, Chongqing 400060, China; 3. College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
Abstract: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.
Keywords:multi-mode resonator  wideband filter  wide stopband suppression  high selectivity
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