Ashkan Golmohammadi, Farrokh Hojjat Kashani, S. H. Sedighy, Homayoon Oraizi, M. A. Chaychi Zadeh
{"title":"Wideband Nonuniform Tapered Antipodal Vivaldi Antenna With Improved Radiation Pattern","authors":"Ashkan Golmohammadi, Farrokh Hojjat Kashani, S. H. Sedighy, Homayoon Oraizi, M. A. Chaychi Zadeh","doi":"10.1002/mop.70173","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>In this paper, a novel antipodal Vivaldi antenna (AVA) is designed and fabricated using nonuniform taper inner and outer flares. The inner and outer flares Fourier series coefficients are optimized with particle swarm optimization (PSO) algorithm to reduce side lobe level (SLL) on both <i>E-</i> and H-planes. The lower frequency of the proposed AVA is reduced from 9.78 to 5.22 GHz compared with the conventional one. The proposed low-profile antenna has significantly lower SLL versus frequency on both <i>E-</i> and <i>H</i>-planes, and high gain rather than the conventional one. These valuable specifications prove the high performance of the proposed AVA compared with the conventional AVAs.</p>\n </div>","PeriodicalId":18562,"journal":{"name":"Microwave and Optical Technology Letters","volume":"67 3","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2025-03-18","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.70173","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
In this paper, a novel antipodal Vivaldi antenna (AVA) is designed and fabricated using nonuniform taper inner and outer flares. The inner and outer flares Fourier series coefficients are optimized with particle swarm optimization (PSO) algorithm to reduce side lobe level (SLL) on both E- and H-planes. The lower frequency of the proposed AVA is reduced from 9.78 to 5.22 GHz compared with the conventional one. The proposed low-profile antenna has significantly lower SLL versus frequency on both E- and H-planes, and high gain rather than the conventional one. These valuable specifications prove the high performance of the proposed AVA compared with the conventional AVAs.
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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