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

作　　者：熊阳 张伟[2] 王荔田 XIONG Yang;ZHANG Wei;WANG Li-tian(Southwest China Institute of Electronic Technology,Chengdu 610036,China;Chongqing Acoustic-Optic-Electronic Company of CETC,Chongqing 400060,China;College of Electronic Information and Optical Engineering,Nankai University,Tianjin 300350,China)

机构地区：[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

出　　处：《微波学报》2020年第2期10-13,共4页Journal of Microwaves

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2.47 GHz,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232 dB/GHz和168 dB/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。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 232 dB/GHz and 168 dB/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.

关 键 词：多模谐振器 宽带滤波器 宽阻带抑制 高选择性 

分 类 号：TN713.5[电子电信—电路与系统]