{"title":"A Wideband Butler Matrix Based on Ridge Gap Waveguides for mmW Applications","authors":"Yu Quan, Hao Wang, S. Tao","doi":"10.1109/iwem53379.2021.9790361","DOIUrl":null,"url":null,"abstract":"A wideband butler matrix (BM) is designed based on ridge gap waveguides (RGWGW). The BM consists of several directional couplers, crossovers and phase shifters. The simulated S11/22 is below -10 dB from 25.6 to 33 GHz with a bandwidth of around 25.3%. Meanwhile, the isolation level is above 10 dB in the working band. Besides, the phase errors are within ± 10°. Each output port of the BM is terminated with two parallel dipoles with different length as the radiation element. This multibeam antenna has a stable radiation pattern. The maximum gain achieved for Port 1 and Port 2 are 13.71 dBi and 12.69 dBi respectively.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/iwem53379.2021.9790361","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A wideband butler matrix (BM) is designed based on ridge gap waveguides (RGWGW). The BM consists of several directional couplers, crossovers and phase shifters. The simulated S11/22 is below -10 dB from 25.6 to 33 GHz with a bandwidth of around 25.3%. Meanwhile, the isolation level is above 10 dB in the working band. Besides, the phase errors are within ± 10°. Each output port of the BM is terminated with two parallel dipoles with different length as the radiation element. This multibeam antenna has a stable radiation pattern. The maximum gain achieved for Port 1 and Port 2 are 13.71 dBi and 12.69 dBi respectively.
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