中国科学技术大学学报 ›› 2020, Vol. 50 ›› Issue (3): 363-368.DOI: 10.3969/j.issn.0253-2778.2020.03.015

• 论著 • 上一篇    下一篇

基于复合贴片CSIW结构的双带滤波器设计

李安然   

  1. 中国科学技术大学电子工程与信息科学系,安徽合肥 230027
  • 收稿日期:2020-01-12 修回日期:2020-03-12 接受日期:2020-03-12 出版日期:2020-03-31 发布日期:2020-03-12

Dual-band filter design based on composite patch and substrate integrated waveguide structures

  1. LI Anran
  • Received:2020-01-12 Revised:2020-03-12 Accepted:2020-03-12 Online:2020-03-31 Published:2020-03-12
  • About author:LI Anran, male, born in 1995, Master. Research field: microwave material. E-mail: lar@mail.ustc.edu.cn

摘要: 设计了一种基于圆形基片集成波导(circular substrate integrate waveguide, CSIW)的新型多层圆形贴片双频带通滤波器.通过中间层加载圆形金属片,将CSIW谐振腔转变为复合多层圆形贴片谐振腔.与SIW双模圆腔滤波器相比,降低了其主要工作模式的谐振频率,并且增加了新的圆形贴片谐振模式来形成双带.为了验证其有效性,在HFSS(high frequency structure simulator)中建立仿真模型.在进行参数优化后,得到了双通带滤波器.结果表明,该滤波器的双频范围为1.88 GHz~2.08 GHz,3.35 GHz~3.60 GHz,在两个通带的上下边带均有零点,具有很好地选择性.

关键词: 双频滤波器, 磁壁, 复合结构

Abstract: A new type of patch double band-pass filter based on circular substrate integrated waveguide is designed. By loading a circular metal patch, the circular SIW (circular substrate integrate waveguide, CSIW) cavity changes into the composite multilayer circular patch SIW filter. Compared to dual mode CSIW filter, composite multilayer circular patch SIW resonator not only reduces the resonant eigen mode frequency of its main mode, but also adds new modes to form a dual band. To prove its effectiveness, a simulation model is built in HFSS (high frequency structure simulator). Then through parameter optimization, the dual-band composite multilayer circular patch SIW filter is obtained. The results show that the dual-band frequency of the filter is from 1.88 GHz to 2.08 GHz and from 3.35 GHz to 3.60 GHz, and that the upper and lower sidebands of the two passbands have Transmission zeros, which shows good selectivity.

Key words: dual-band filter, magnetic wall, Composite Patches

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