Compact Dual-Band Dual-Mode SIW Balanced BPF With Intrinsic Common-Mode Suppression

被引：34
作者：
Han, Yang-kun [1 ]
Deng, Hong-wei [1 ]
Zhu, Jia-ming [1 ]
Xing, Si-bei [1 ]
Han, Wei [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Nanjing 211106, Peoples R China
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2021年 / 31卷 / 02期
关键词：
Dual band; Band-pass filters; Microstrip; Passband; Substrates; Pins; Nonhomogeneous media; Balanced filter; dual-band; substrate integrated waveguide (SIW); high common-mode (CM) suppression; multi-mode resonator; FILTER; DESIGN;
D O I：
10.1109/LMWC.2020.3048977
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：
In this letter, a compact dual-band dual-mode substrate integrated waveguide (SIW) balanced band-pass filter (BPF) with intrinsic common-mode (CM) suppression is designed by using a single perturbed SIW circular cavity. The vias and slot perturbations are introduced to tune the resonant modes TE010, TE110 (a pair of degenerate modes), and TE210 of a circular cavity. Thus, they can be used to form two differential-mode (DM) passbands with independently adjustable center frequencies and bandwidths. The SIW can be seen as a natural balun with intrinsic CM suppression. Furthermore, the planar differential excitation structure is designed to excite the perturbed SIW cavity. The CM noise cannot excite SIW cavity due to the characteristics of hybrid electromagnetic boundary. Finally, a compact dual-band dual-mode SIW balanced BPF at 8 and 10 GHz is designed and fabricated, and the measured results show good agreement with the simulated ones.
引用
收藏
页码：101 / 104
页数：4
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