Compact Balanced Substrate Integrated Waveguide Filter With Low Insertion Loss

被引：8
|
作者：
Shen, Zhidan [1 ]
Xu, Kai [1 ]
Mbongo, Gire Merphy [1 ]
Shi, Jin [1 ,2 ]
Yang, Yongjie [1 ,2 ]
机构：
[1] Nantong Univ, Sch Informat Sci & Technol, Nantong 226019, Peoples R China
[2] Res Ctr Intelligent Informat Technol, Nantong 226019, Peoples R China
来源：
IEEE ACCESS | 2019年 / 7卷
关键词：
Balanced filter; compact; low loss; substrate integrated waveguide (SIW); TE20 delta mode; BANDPASS-FILTERS; MODE; DESIGN;
D O I：
10.1109/ACCESS.2019.2937349
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A balanced substrate integrated waveguide (SIW) filter is proposed by etching transverse slots on the top surface. The SIW structures between each two adjacent slots are resonators operating at TE20 delta mode for differential-mode (DM) operation and at TE10 delta and TE30 delta modes for common-mode (CM) operation. The proposed TE20 delta-mode resonator is much shorter than the traditional TE201-mode resonator, which causes the whole design to be compact and low loss. Furthermore, the strong electric coupling formed by slots make it have wider bandwidth when compared with the state-of-the-arts. A prototype is designed at 3.5 GHz with the size of 1.2 lambda(d) x 0.83 lambda(d) (lambda(d) is the wavelength in dielectric at the center frequency), the minimum insertion loss of 0.91 dB, the 3-dB fractional bandwidth (FBW) of 16%, and the FBW for 20 dB CM suppression of 79%.
引用
收藏
页码：126111 / 126115
页数：5
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