A Five-Branch Wideband 3-dB Coupler Based on Substrate Integrated Gap Waveguide

被引：0

作者：

Sheng, Jingchao ^{[1
]}

Yi, Hang ^{[1
]}

Su, Peilun ^{[2
]}

Mao, Yuyang ^{[2
]}

Wu, Hao ^{[2
]}

Zhu, Ying ^{[1
]}

Yang, Yifan ^{[1
]}

Guo, Cheng ^{[1
]}

Zhang, Anxue ^{[1
]}

Yang, Qian ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian, Peoples R China

[2] Northwest Inst Nucl Technol, Xian, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2025年 / 67卷 / 03期

关键词：

branch-line coupler; high isolation; substrate integrated gap waveguide; wide bandwidth;

D O I：

10.1002/mop.70131

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：

This paper proposed a SIGW wideband 3-dB coupler that operates mainly in the Ka-band by combining the SIGW theory and the theory of branch-line coupler. Firstly, the structure of the SIGW is analyzed. Then, the coupler is designed using the SIGW transmission line with five-branch to realize a wideband. Finally, the proposed SIGW coupler is fabricated and measured, and the measurement results are consistent with the simulation results. The SIGW coupler centered at 30 GHz has a 40% wide bandwidth (24-36 GHz). The return loss of the coupler is better than 10 dB and the isolation is better than 17 dB. The SIGW coupler in this paper has a wide operating bandwidth, high isolation, and is easy to fabricate compared to conventional branch-line couplers.

引用

页数：8

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