共享孔径直线平顶波束形成调制超表面天线

IF 4.8 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-12 DOI:10.1109/LAWP.2025.3579166

Rong Shu;Yang Hai;Zong-Lin Wang;Jia-Lin Li;Si-Yu Yin;Steve W. Y. Mung

{"title":"共享孔径直线平顶波束形成调制超表面天线","authors":"Rong Shu;Yang Hai;Zong-Lin Wang;Jia-Lin Li;Si-Yu Yin;Steve W. Y. Mung","doi":"10.1109/LAWP.2025.3579166","DOIUrl":null,"url":null,"abstract":"In this letter, a fan-shaped aperture-modulated metasurface antenna (MMA) is proposed for straight-line flat-top beamforming at a specified elevation angle. The desired beam pattern is decomposed into multiple adjacent sub-beams, implemented via a multibeam shared-aperture technique. Unlike conventional circular or rectangular apertures, the fan-shaped design effectively suppresses beam splitting within a 7% relative bandwidth. Mushroom-shaped electromagnetic bandgap structures are introduced at the aperture edges to reflect surface waves, thereby reducing sidelobes. Global optimization of the unit cell geometries further enhances antenna gain, achieving a uniform flat-top pattern. A prototype operating at 15 GHz demonstrates a measured peak gain of 17.3 dBi with a flat-top pattern having a 2 dBi gain variation range of about 45°, showing good agreement with the simulation results.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"2994-2998"},"PeriodicalIF":4.8000,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modulated Metasurface Antenna for Straight-Line Flat-Top Beamforming With Shared Aperture\",\"authors\":\"Rong Shu;Yang Hai;Zong-Lin Wang;Jia-Lin Li;Si-Yu Yin;Steve W. Y. Mung\",\"doi\":\"10.1109/LAWP.2025.3579166\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this letter, a fan-shaped aperture-modulated metasurface antenna (MMA) is proposed for straight-line flat-top beamforming at a specified elevation angle. The desired beam pattern is decomposed into multiple adjacent sub-beams, implemented via a multibeam shared-aperture technique. Unlike conventional circular or rectangular apertures, the fan-shaped design effectively suppresses beam splitting within a 7% relative bandwidth. Mushroom-shaped electromagnetic bandgap structures are introduced at the aperture edges to reflect surface waves, thereby reducing sidelobes. Global optimization of the unit cell geometries further enhances antenna gain, achieving a uniform flat-top pattern. A prototype operating at 15 GHz demonstrates a measured peak gain of 17.3 dBi with a flat-top pattern having a 2 dBi gain variation range of about 45°, showing good agreement with the simulation results.\",\"PeriodicalId\":51059,\"journal\":{\"name\":\"IEEE Antennas and Wireless Propagation Letters\",\"volume\":\"24 9\",\"pages\":\"2994-2998\"},\"PeriodicalIF\":4.8000,\"publicationDate\":\"2025-06-12\",\"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/11032104/\",\"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/11032104/","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}

引用次数: 0

摘要

在这封信中，提出了一种扇形孔径调制超表面天线（MMA），用于指定仰角的直线平顶波束形成。期望的波束图被分解成多个相邻的子波束，通过多波束共享孔径技术实现。与传统的圆形或矩形孔径不同，扇形设计有效地抑制了7%相对带宽内的光束分裂。在孔径边缘引入蘑菇形状的电磁带隙结构来反射表面波，从而减少了旁瓣。单元几何结构的全局优化进一步提高了天线增益，实现了均匀的平顶图案。在15ghz工作的样机中，测量到的峰值增益为17.3 dBi，平顶方向图的2dbi增益变化范围约为45°，与仿真结果吻合良好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Modulated Metasurface Antenna for Straight-Line Flat-Top Beamforming With Shared Aperture

In this letter, a fan-shaped aperture-modulated metasurface antenna (MMA) is proposed for straight-line flat-top beamforming at a specified elevation angle. The desired beam pattern is decomposed into multiple adjacent sub-beams, implemented via a multibeam shared-aperture technique. Unlike conventional circular or rectangular apertures, the fan-shaped design effectively suppresses beam splitting within a 7% relative bandwidth. Mushroom-shaped electromagnetic bandgap structures are introduced at the aperture edges to reflect surface waves, thereby reducing sidelobes. Global optimization of the unit cell geometries further enhances antenna gain, achieving a uniform flat-top pattern. A prototype operating at 15 GHz demonstrates a measured peak gain of 17.3 dBi with a flat-top pattern having a 2 dBi gain variation range of about 45°, showing good agreement with the simulation results.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

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.