COMPACT TUNABLE DUAL-BAND BANDPASS FILTER BASED ON SUBSTRATE INTEGRATED WAVEGUIDE AND DEFECTED GROUND STRUCTURE

被引：3
|
作者：
Wang, Zhu-Dan [1 ]
Wei, Feng [1 ]
Zhang, Li [1 ]
Shi, Xiao-Wei [1 ]
机构：
[1] Xidian Univ, Natl Lab Sci & Technol Antennas & Microwaves, Xian 710071, Shaanxi, Peoples R China
来源：
PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS | 2013年 / 41卷
基金：
中国国家自然科学基金;
关键词：
D O I：
10.2528/PIERL13062503
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 compact tunable dual-band bandpass filter (BPF) based on substrate integrated waveguide (SIW) and defected ground structure (DGS) is investigated in this paper. The second passband can be flexibly controlled by changing the dimensions of the up down DGSs whereas the first passband is fixed. The proposed filter exhibits improved selectivity due to the introduction of four left-right DGSs generating transmission zeroes. To verify the design method, a compact dual-band filter with the second center frequency switched among 5.4 GHz, 5.8 GHz, 6.4 GHz and 6.8 GHz and the first center frequency fixed at 4.78 GHz, is designed and fabricated. The simulated and measured results are in good agreement with each other.
引用
收藏
页码：193 / 203
页数：11
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