{"title":"Wideband Dual-Circular-Polarization Antenna based on the Grooved-Wall Horn Antenna for Millimeter-Wave Wireless Communications","authors":"Chao Shu, Yuan Yao, Y. Alfadhl, Xiao-dong Chen","doi":"10.1109/ucmmt53364.2021.9569932","DOIUrl":null,"url":null,"abstract":"This paper presents a dual-circular-polarization (dual-CP) antenna based on a grooved-wall horn antenna working in the W-band, which shows high port isolation over a wide bandwidth. The grooved-wall horn antenna has a pair of grooves on its wall to serve as an inbuilt polarizer. By connecting the grooved-wall horn to an orthomode transducer (OMT) in such a way that the pair of grooves is aligned at ±45° with respect to the horizontal and vertical polarization of the OMT, left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP) can be generated, thereby realizing a dual-CP antenna. High isolation is also achieved due to the low reflection coefficient of the horn and high isolation of the OMT. The simulated results show the proposed dual-CP antenna achieves port isolation> 30 dB over 27.4% bandwidth from 82 to 108 GHz with axial ratio (AR) < 3 dB and |S11| < −15 dB.","PeriodicalId":117712,"journal":{"name":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ucmmt53364.2021.9569932","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
This paper presents a dual-circular-polarization (dual-CP) antenna based on a grooved-wall horn antenna working in the W-band, which shows high port isolation over a wide bandwidth. The grooved-wall horn antenna has a pair of grooves on its wall to serve as an inbuilt polarizer. By connecting the grooved-wall horn to an orthomode transducer (OMT) in such a way that the pair of grooves is aligned at ±45° with respect to the horizontal and vertical polarization of the OMT, left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP) can be generated, thereby realizing a dual-CP antenna. High isolation is also achieved due to the low reflection coefficient of the horn and high isolation of the OMT. The simulated results show the proposed dual-CP antenna achieves port isolation> 30 dB over 27.4% bandwidth from 82 to 108 GHz with axial ratio (AR) < 3 dB and |S11| < −15 dB.