{"title":"Three-beam microstrip antenna arrays fed by 3 × 3 Butler matrix","authors":"I. Slomian, A. Rydosz, S. Gruszczynski, K. Wincza","doi":"10.1109/MAPE.2017.8250783","DOIUrl":null,"url":null,"abstract":"An approach to the design of a three-beam linearly-polarized microstrip antenna arrays has been proposed. The presented antenna arrays feature one broadside beam and two symmetrically scanned beams with respect to boresight direction generated with the use of a 3 × 3 Butler matrix as a feeding network. Such a Butler matrix allows to obtain equal power split and 0° −120°, and +120° differential phases at its outputs. The proposed concept has been experimentally verified by development and measurements of a three-element linear antenna array with uniform amplitude taper as well as a five-element linear antenna array with reduced sidelobe level, both operating at 2.5 GHz.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"471 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MAPE.2017.8250783","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
An approach to the design of a three-beam linearly-polarized microstrip antenna arrays has been proposed. The presented antenna arrays feature one broadside beam and two symmetrically scanned beams with respect to boresight direction generated with the use of a 3 × 3 Butler matrix as a feeding network. Such a Butler matrix allows to obtain equal power split and 0° −120°, and +120° differential phases at its outputs. The proposed concept has been experimentally verified by development and measurements of a three-element linear antenna array with uniform amplitude taper as well as a five-element linear antenna array with reduced sidelobe level, both operating at 2.5 GHz.
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