Jingchao Sheng, Hang Yi, Peilun Su, Yuyang Mao, Hao Wu, Ying Zhu, Yifan Yang, Cheng Guo, Anxue Zhang, Qian Yang
{"title":"A Five-Branch Wideband 3-dB Coupler Based on Substrate Integrated Gap Waveguide","authors":"Jingchao Sheng, Hang Yi, Peilun Su, Yuyang Mao, Hao Wu, Ying Zhu, Yifan Yang, Cheng Guo, Anxue Zhang, Qian Yang","doi":"10.1002/mop.70131","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>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.</p>\n </div>","PeriodicalId":18562,"journal":{"name":"Microwave and Optical Technology Letters","volume":"67 3","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microwave and Optical Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/mop.70131","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
A Five-Branch Wideband 3-dB Coupler Based on Substrate Integrated Gap Waveguide
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.
期刊介绍：
Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas.
- RF, Microwave, and Millimeter Waves
- Antennas and Propagation
- Submillimeter-Wave and Infrared Technology
- Optical Engineering
All papers are subject to peer review before publication
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