{"title":"基于模式对消方法的5G移动终端小型化MIMO天线设计","authors":"Yifan Lu;Changjiang Deng;Yiming Fan;Rongrong Dong","doi":"10.1109/LAWP.2025.3587350","DOIUrl":null,"url":null,"abstract":"In this letter, a miniature multiple-input–multiple-output (MIMO) antenna pair operating at the 3.5 GHz band is proposed for 5G mobile terminals. The design consists of dual inverted-F antennas (IFAs) arranged in an asymmetric mirrored configuration with respect to the chassis ground plane, occupying a compact size of 12 mm × 5 mm. By adding an inductor at the center of the 1-mm-wide gap between the two closely spaced IFAs, the mutual coupling is greatly reduced. The decoupling mechanism is explained from the perspective of common mode and differential mode cancellation. A prototype of the proposed antenna pair is fabricated. The measured −6 dB overlapping bandwidth of the two ports covers the 3.4 GHz to 3.6 GHz band, with port isolation higher than 22.4 dB.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"3253-3257"},"PeriodicalIF":4.8000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Miniaturized MIMO Antenna Design Based on Mode Cancellation Method for 5G Mobile Terminals\",\"authors\":\"Yifan Lu;Changjiang Deng;Yiming Fan;Rongrong Dong\",\"doi\":\"10.1109/LAWP.2025.3587350\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this letter, a miniature multiple-input–multiple-output (MIMO) antenna pair operating at the 3.5 GHz band is proposed for 5G mobile terminals. The design consists of dual inverted-F antennas (IFAs) arranged in an asymmetric mirrored configuration with respect to the chassis ground plane, occupying a compact size of 12 mm × 5 mm. By adding an inductor at the center of the 1-mm-wide gap between the two closely spaced IFAs, the mutual coupling is greatly reduced. The decoupling mechanism is explained from the perspective of common mode and differential mode cancellation. A prototype of the proposed antenna pair is fabricated. The measured −6 dB overlapping bandwidth of the two ports covers the 3.4 GHz to 3.6 GHz band, with port isolation higher than 22.4 dB.\",\"PeriodicalId\":51059,\"journal\":{\"name\":\"IEEE Antennas and Wireless Propagation Letters\",\"volume\":\"24 9\",\"pages\":\"3253-3257\"},\"PeriodicalIF\":4.8000,\"publicationDate\":\"2025-07-10\",\"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/11075524/\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Antennas and Wireless Propagation Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/11075524/","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}
Miniaturized MIMO Antenna Design Based on Mode Cancellation Method for 5G Mobile Terminals
In this letter, a miniature multiple-input–multiple-output (MIMO) antenna pair operating at the 3.5 GHz band is proposed for 5G mobile terminals. The design consists of dual inverted-F antennas (IFAs) arranged in an asymmetric mirrored configuration with respect to the chassis ground plane, occupying a compact size of 12 mm × 5 mm. By adding an inductor at the center of the 1-mm-wide gap between the two closely spaced IFAs, the mutual coupling is greatly reduced. The decoupling mechanism is explained from the perspective of common mode and differential mode cancellation. A prototype of the proposed antenna pair is fabricated. The measured −6 dB overlapping bandwidth of the two ports covers the 3.4 GHz to 3.6 GHz band, with port isolation higher than 22.4 dB.
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.