A New Approach to Design Differential-Mode Bandpass Filters on SIW Structure

被引:73
作者
Xu, Xin [1 ]
Wang, Jianpeng [1 ]
Zhu, Lei
机构
[1] Nanjing Univ Sci & Technol, Ministerial Key Lab, Nanjing 210094, Jiangsu, Peoples R China
关键词
Common-mode (CM) suppression; differential-mode (DM) bandpass filter (BPF); substrate integrated waveguide (SIW);
D O I
10.1109/LMWC.2013.2283859
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new approach to design differential-mode (DM) bandpass filters is proposed and implemented based on the substrate integrated waveguide (SIW) technology. By properly constructing the topologies of SIW resonant cavities, the balanced section of the proposed filter achieves an attractive capacity in simultaneously realizing the desired DM transmission and expected common-mode (CM) suppression in a certain band. In design, the specified DM frequency response is achieved with an equivalent two-port circuit model. To illustrate the possibilities of the new approach, a fourth-order Ku-band prototype is designed and fabricated on a single-layer substrate. Measured results agree well with the predicted counterparts.
引用
收藏
页码:635 / 637
页数:3
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