Novel dual-mode bandpass filter with transmission zeros using substrate integrated waveguide cavity

被引：14
|
作者：
Qin, P. -Y. [1 ]
Liang, C. -H. [1 ]
Wu, B. [1 ]
Su, T. [1 ]
机构：
[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Peoples R China
来源：
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS | 2008年 / 22卷 / 5-6期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1163/156939308784159417
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 novel bandpass filter with two dual-mode cavities based on the substrate integrated waveguide (SIW) is presented. By making use of the inductive discontinuities in an SIW cavity, two degenerate modes can be excited. Due to the phase difference of the two modes in each cavity, two transmission zeros on each side of the passband are created, so the out-of-band rejection of the filter is significantly improved. An SIW dual-mode filter with a center frequency of 12 GHz has been fabricated and measured. The experimental results agree well with the simulation results.
引用
收藏
页码：723 / 730
页数：8
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