{"title":"A Miniaturized High-Gain Vivaldi Antenna Based on Irregular Curved Slots and Metasurface","authors":"Jinxin Li, Yabo Li, Ruizhi Liu, Lingrun Zhu, Yilin Jiang, Zhihong Xi","doi":"10.1002/mop.70823","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>A compact Vivaldi antenna (0.39λ<sub>0</sub> × 0.37λ<sub>0</sub> × 0.003λ<sub>0</sub>) with enhanced gain performance is proposed in this letter. The antenna covers an ultra-wideband range from 2 to 22 GHz (163%) and achieves an average realized gain of 11 dB. By applying irregular curved slots, the low-band gain has been enhanced within the compact Vivaldi antenna. To reduce return loss and further increase low-band gain, rectangular strips are embedded into curved slots. Additionally, the gain in the high-frequency band is improved by integrating a novel metasurface (MS) array, composed of cross elements of varying lengths arranged at different angles. This design ensures that the total gain of the antenna is evenly distributed over a wide frequency band, with a maximum gain approaching 13 dB. The practical experiments are carried out, and the results show agreement with simulated features.</p>\n </div>","PeriodicalId":18562,"journal":{"name":"Microwave and Optical Technology Letters","volume":"68 10","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2026-10-15","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.70823","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 compact Vivaldi antenna (0.39λ0 × 0.37λ0 × 0.003λ0) with enhanced gain performance is proposed in this letter. The antenna covers an ultra-wideband range from 2 to 22 GHz (163%) and achieves an average realized gain of 11 dB. By applying irregular curved slots, the low-band gain has been enhanced within the compact Vivaldi antenna. To reduce return loss and further increase low-band gain, rectangular strips are embedded into curved slots. Additionally, the gain in the high-frequency band is improved by integrating a novel metasurface (MS) array, composed of cross elements of varying lengths arranged at different angles. This design ensures that the total gain of the antenna is evenly distributed over a wide frequency band, with a maximum gain approaching 13 dB. The practical experiments are carried out, and the results show agreement with simulated features.
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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