{"title":"A broadband and high-efficiency folded transmitarray antenna","authors":"Meizi Wu, Wei Rao, Lu Guo","doi":"10.1002/mop.70006","DOIUrl":null,"url":null,"abstract":"<p>A folded transmitarray antenna (FTA) with low profile, high efficiency, and broadband is proposed. The transmission unit-cell is composed of two metallic layers of bowknot-shaped patches printed on a single layer of dielectric substrate. By regulating bowknot-shaped patches' dimension and mirroring elements' top and bottom layers, 360° phase swing and high transmission magnitudes are obtained. With the introduction of a reflectarray integrated with a feed horn in the middle, an FTA is designed based on ray tracing principle, leading to a profile reduced to 1/3 of the focal distance of traditional transmitarrays. According to testing results, 15.5% 1 dB gain bandwidth, 30.9% 3 dB gain bandwidth, and 42.3% peak aperture efficiency are achieved. These outstanding performances demonstrate its good potential for a wide range of high-gain applications.</p>","PeriodicalId":18562,"journal":{"name":"Microwave and Optical Technology Letters","volume":"66 10","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2024-10-15","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.70006","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}
引用次数: 0
Abstract
A folded transmitarray antenna (FTA) with low profile, high efficiency, and broadband is proposed. The transmission unit-cell is composed of two metallic layers of bowknot-shaped patches printed on a single layer of dielectric substrate. By regulating bowknot-shaped patches' dimension and mirroring elements' top and bottom layers, 360° phase swing and high transmission magnitudes are obtained. With the introduction of a reflectarray integrated with a feed horn in the middle, an FTA is designed based on ray tracing principle, leading to a profile reduced to 1/3 of the focal distance of traditional transmitarrays. According to testing results, 15.5% 1 dB gain bandwidth, 30.9% 3 dB gain bandwidth, and 42.3% peak aperture efficiency are achieved. These outstanding performances demonstrate its good potential for a wide range of high-gain applications.
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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