Design of a Multiband Antenna With Polarization Diversity for Smartwatch Applications

IF 4.6 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-04 DOI:10.1109/TAP.2025.3545591

Kai Zhang;Jiangcheng Chen;Ping Jack Soh;Mingjun Wang;Sen Yan

{"title":"Design of a Multiband Antenna With Polarization Diversity for Smartwatch Applications","authors":"Kai Zhang;Jiangcheng Chen;Ping Jack Soh;Mingjun Wang;Sen Yan","doi":"10.1109/TAP.2025.3545591","DOIUrl":null,"url":null,"abstract":"This article presents a novel multiband polarization diversity watch antenna designed for smartwatch applications. The proposed antenna adopts the loop multimode resonant technology and the odd-even mode feeding technology. By exciting the first three modes of the loop of the watch frame, the effective resonance at 2.5, 4.4, and 5.8 GHz is achieved. The polarization diversity technology on the common aperture is realized through the odd-even mode feeding technology. Therefore, the orthogonal current directions are generated within the watch frame, and the watch strap is efficiently used for the diversity at 0.82 GHz, for n5, n41, n79, and industrial, scientific, and medical (ISM) band applications. Simulations and measurements from the watch antenna showed excellent performance in terms of reflection, far field, and polarization diversity. Besides that, additional evaluation on the human wrist also indicates low specific absorption ratio (SAR) and envelope correlation coefficient (ECC) levels. To the best of our knowledge, such multiband diversity antennas with favorable characteristics designed for watches are not evident in other state-of-the-art literature.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 7","pages":"4286-4299"},"PeriodicalIF":4.6000,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Antennas and Propagation","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10909258/","RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

This article presents a novel multiband polarization diversity watch antenna designed for smartwatch applications. The proposed antenna adopts the loop multimode resonant technology and the odd-even mode feeding technology. By exciting the first three modes of the loop of the watch frame, the effective resonance at 2.5, 4.4, and 5.8 GHz is achieved. The polarization diversity technology on the common aperture is realized through the odd-even mode feeding technology. Therefore, the orthogonal current directions are generated within the watch frame, and the watch strap is efficiently used for the diversity at 0.82 GHz, for n5, n41, n79, and industrial, scientific, and medical (ISM) band applications. Simulations and measurements from the watch antenna showed excellent performance in terms of reflection, far field, and polarization diversity. Besides that, additional evaluation on the human wrist also indicates low specific absorption ratio (SAR) and envelope correlation coefficient (ECC) levels. To the best of our knowledge, such multiband diversity antennas with favorable characteristics designed for watches are not evident in other state-of-the-art literature.

查看原文本刊更多论文

智能手表用极化分集多波段天线设计

本文介绍了一种用于智能手表应用的新型多波段极化分集手表天线。该天线采用环形多模谐振技术和奇偶模馈电技术。通过激发表框环的前三种模式，实现了2.5、4.4和5.8 GHz的有效共振。通过奇偶馈电技术实现了共孔径上的偏振分集技术。因此，在表框内产生正交电流方向，表带有效地用于0.82 GHz的分集，用于n5， n41， n79和工业，科学和医疗（ISM）波段应用。手表天线的仿真和测量结果表明，手表天线在反射、远场和极化分集方面具有优异的性能。此外，对人体手腕的附加评价也显示出较低的比吸收比（SAR）和包络相关系数（ECC）水平。据我们所知，这种多波段分集天线具有良好的特点，专为手表是不明显的，在其他国家的最先进的文献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques