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基于DGS结构的超宽带带通滤波器 被引量：2

Ultra-wideband Bandpass Filter With Defected Ground Structure
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摘要 基于双开口-互补开环谐振器的缺陷地结构(DGS),设计了一个结构紧凑的基片集成波导(SIW)超宽带带通滤波器。通过调整蚀刻在SIW底面的双开口-互补开环谐振器,SIW表面的共面波导与腔体之间的耦合,同时在阻带获得3个传输零点,以得到较好的频率选择性和良好的带外抑制。经过仿真优化及实物制作,测试结果表明,该滤波器工作在7.2GHz,相对带宽28%,带外抑制良好,仿真与测试结果吻合。 A compact ultra-wideband substrate integrated waveguide （SIW） bandpass filter with defected ground structure （DGS） based on double-slit complementary split-ring resonators is proposed in this work. Through adjus- ting the double-slit complementary split-ring resonators etched on the ground plane of the SIW cavity as well as the coupling between the coplanar waveguide on SIW top layer and the SIW cavity, three transmission zeros is obtained to get a better frequency selectivity and out of band reiection. The testing results show that the proposed filter has a 28% of fractional bandwidth with 7.2 GHz of center frequency, and it＇s agreed well with the simulated one.
作者 汪子成 杨涛 杨自强
机构地区 电子科技大学电子工程学院
出处 《压电与声光》 CSCD 北大核心 2014年第6期952-954,共3页 Piezoelectrics & Acoustooptics
关键词 滤波器 缺陷地结构(DGS) 基片集成波导(SIW) 共面波导 超宽带 defected ground structure(DGS) substrate integrated waveguide(SIW) filter defected ground structure（DGS） substrate integrated waveguide（SIW） coplanar waveguide ultra wideband
分类号 TN928 [电子电信—通信与信息系统]
  • 相关文献

参考文献6

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二级参考文献12

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共引文献1

同被引文献14

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引证文献2

二级引证文献6

压电与声光
2014年 第6期

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