{"title":"Ultrawideband Pattern-Reconfigurable Planar Monopole Antenna Based on Liquid Metal","authors":"Min Wang;Zhe Zhang;Aixin Chen","doi":"10.1109/LAWP.2024.3439314","DOIUrl":null,"url":null,"abstract":"In this letter, we present a pattern-reconfigurable planar monopole antenna with four channels filled with either air or liquid metal. The innovative design enables transitions between a monopole mode and two directional modes, offering symmetrical radiation patterns across an ultrawideband range. The key lies in its reconfigurable ground plane, which incorporates channels facilitating mode transitions. Without liquid metal (State 0), it functions as a monopole antenna with good impedance matching from 3.4 GHz to 12.5 GHz. Injecting liquid metal into a single channel (States 1 or 3) forms a reflector, enabling directional radiation in the lower band [(2.6 to 5.5) GHz] with a maximum gain of 5.5 dBi. Filling two adjacent channels (States 2 or 4) achieves a –10 dB impedance bandwidth from 5.5 GHz to 12.5 GHz with a maximum gain of 8.7 dBi. Radiation patterns can be switched between two opposing directions by injecting liquid metal into left or right channels, making it suitable for ultrawideband wireless devices.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"23 11","pages":"3734-3738"},"PeriodicalIF":4.8000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Antennas and Wireless Propagation Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10623819/","RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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Abstract
In this letter, we present a pattern-reconfigurable planar monopole antenna with four channels filled with either air or liquid metal. The innovative design enables transitions between a monopole mode and two directional modes, offering symmetrical radiation patterns across an ultrawideband range. The key lies in its reconfigurable ground plane, which incorporates channels facilitating mode transitions. Without liquid metal (State 0), it functions as a monopole antenna with good impedance matching from 3.4 GHz to 12.5 GHz. Injecting liquid metal into a single channel (States 1 or 3) forms a reflector, enabling directional radiation in the lower band [(2.6 to 5.5) GHz] with a maximum gain of 5.5 dBi. Filling two adjacent channels (States 2 or 4) achieves a –10 dB impedance bandwidth from 5.5 GHz to 12.5 GHz with a maximum gain of 8.7 dBi. Radiation patterns can be switched between two opposing directions by injecting liquid metal into left or right channels, making it suitable for ultrawideband wireless devices.
期刊介绍：
IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.
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