Article(id=1266342973307507552, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1266342817036128371, articleNumber=null, orderNo=null, doi=10.3981/j.issn.1000-7857.2025.08.00092, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1755964800000, receivedDateStr=2025-08-24, revisedDate=1776700800000, revisedDateStr=2026-04-21, acceptedDate=null, acceptedDateStr=null, onlineDate=1779849292350, onlineDateStr=2026-05-27, pubDate=1778601600000, pubDateStr=2026-05-13, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1779849292350, onlineIssueDateStr=2026-05-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1779849292350, creator=13701087609, updateTime=1779849292350, updator=13701087609, issue=Issue{id=1266342817036128371, tenantId=1146029695717560320, journalId=1146031591421210625, year='2026', volume='44', issue='9', pageStart='1', pageEnd='136', issueExtLink='null', onlineDate='null', pubDate='1778601600000', pubDateStr='2026-05-13', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1779849255084, creator='13701087609', updateTime=1779849689565, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1266344639704485987, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1266342817036128371, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1266344639708680292, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1266342817036128371, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=108, endPage=115, ext={EN=ArticleExt(id=1266342973794046818, articleId=1266342973307507552, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=A study of base station edge coverage enhancement based on reconfigurable intelligent metasurface near−field focusing, columnId=1150494644690366681, journalTitle=Science & Technology Review, columnName=Papers, runingTitle=null, highlight=null, articleAbstract=
With the continuous advancement of wireless mobile communication technologies, user demand for high−quality communication services is growing significantly. As distance increases, the signal weakens at the cell edge, and the issue of insufficient base station coverage in these areas becomes a key factor constraining communication quality. Consequently, enhancing the performance of cell−edge users has become a major research focus in the field of wireless communications. Addressing this challenge, this study proposes utilizing reconfigurable intelligent surface (RIS) technology to achieve near−field focusing in the 3.5 GHz band to enhance cell−edge coverage. The near−field focusing effect of the electromagnetic superstructure was verified through both theoretical calculation and full−wave electromagnetic simulation. The analysis results indicated that RIS can achieve near−field focusing of electromagnetic waves by precisely controlling the phase of the electromagnetic waves. Field trial measurement in outdoor environments using a constructed RIS proof−of−concept prototype measured signal strength at various positions within the near−field region, validating the RIS's near−field focusing capability. System performance tests were conducted to evaluate the signal enhancement based on RIS near−field focusing, combined with a commercial base station antenna. Experimental results demonstrate that the intelligent metasurface exhibits excellent coverage enhancement effects in near−field focusing and can improve communication quality in the edge regions of base stations.
, authors=null, authorsList=Chi ZHANG, Xiaomei WU, Hao LI, Hongtai MA, Guang YANG, Xiaoxiong CAI, Jian REN, authorCompany=null, correspAuthors=Jian REN, authorNote=null, correspAuthorsNote=null, copyrightStatement=
All rights reserved. Unauthorized reproduction is prohibited., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1266342977740886900, articleId=1266342973307507552, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=基于可重构智能超表面近场聚焦的基站边缘覆盖增强研究, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
随着无线移动通信技术的不断发展,用户对高质量通信服务的需求日益增长。通信距离的增加、小区边缘信号减弱、小区边缘基站覆盖不足等问题成为制约通信质量的关键因素,小区边缘用户的性能提升成为无线通信领域的重点研究内容。为此提出利用可重构智能超表面(reconfigurable intelligent surfaces,RIS)技术实现近场聚焦以增强小区边缘覆盖。分别采用理论计算和全波电磁仿真方法对电磁超表面的近场聚焦效果进行了仿真,分析结果表明,RIS能够通过精确调控电磁波相位实现电磁波的近场聚焦,显著提升超表面近场区域内的信号强度。利用所搭建3.5 GHz RIS原理样机对近场区域内不同位置的信号强度进行了外场场域测试,验证了RIS的近场聚焦能力。结合商用基站天线,对基于RIS近场聚焦的信号增强进行了系统性能测试。实验结果表明,在一定范围内智能超表面在近场聚焦中表现出良好的覆盖增强效果,能够改善基站边缘区域的通信质量。
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, authorsList=张弛, 吴晓梅, 李昊, 马鸿泰, 杨桄, 蔡晓雄, 任建, authorCompany=null, correspAuthors=任建, authorNote=null, correspAuthorsNote=
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版权所有,未经授权,不得转载。, copyrightOwner=《科技导报》编辑部, extLink=null, articleAbsUrl=null, sourceXml=3CCJPFMWR5raHGMjEuEOBQ==, magXml=LQsdD+uUNKQFjTJMLUQoCw==, pdfUrl=null, pdf=fcc9V9Osjv5xci/7BPnN9Q==, pdfFileSize=4020711, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=yL8U0ieXzVsnfk+wAz9sqg==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=z6A/17qaME4oPw93oFa82w==, mapNumber=null, fund=null)}, authors=[Author(id=1266342979712209790, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=maht@chinatowercom.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1266342979796095872, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, authorId=1266342979712209790, language=EN, stringName=Chi ZHANG, firstName=Chi, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1西安电子科技大学雷达探测感知全国重点实验室,西安 710071, bio={"content":"
张弛,硕士研究生,主要研究方向为宽带可重构电磁超表面设计,电子信箱:z_chi@stu.xidian.edu.cn
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张弛,硕士研究生,主要研究方向为宽带可重构电磁超表面设计,电子信箱:z_chi@stu.xidian.edu.cn
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1National Key Laboratory of Radar Detection and Sensing, Xidian University, Xi'an 710071, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1266342985496155039, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, authorId=1266342985034781596, language=CN, stringName=任建, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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智能超表面聚焦码本示意, figureFileSmall=iXbgPWdBnkpq3BJcF2M0pA==, figureFileBig=YNgGsvxZQfRVVm1zKl9mdQ==, tableContent=null), ArticleFig(id=1266342990709674928, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=EN, label=null, caption=null, figureFileSmall=HxQXvyexjeStC7MstamxAA==, figureFileBig=k+XeGKx4aiahKb8tPUdSPw==, tableContent=null), ArticleFig(id=1266342990780978097, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=CN, label=图5, caption=
智能超表面聚焦全波仿真结果, figureFileSmall=HxQXvyexjeStC7MstamxAA==, figureFileBig=k+XeGKx4aiahKb8tPUdSPw==, tableContent=null), ArticleFig(id=1266342990961333170, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=EN, label=null, caption=null, figureFileSmall=+YCB4Ahvhdx07JK4MrrDQA==, figureFileBig=7wv32y5+hic7b2pU69f9Rg==, tableContent=null), ArticleFig(id=1266342991028442035, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=CN, label=图6, caption=
测试场景设置情况, figureFileSmall=+YCB4Ahvhdx07JK4MrrDQA==, figureFileBig=7wv32y5+hic7b2pU69f9Rg==, tableContent=null), ArticleFig(id=1266342991124911028, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=EN, label=null, caption=null, figureFileSmall=v8OoV09QYrZFOiwRPLUgkg==, figureFileBig=5xd3er/QLZygwiW1eE4dxA==, tableContent=null), ArticleFig(id=1266342991200408501, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=CN, label=图7, caption=
外场测试场景, figureFileSmall=v8OoV09QYrZFOiwRPLUgkg==, figureFileBig=5xd3er/QLZygwiW1eE4dxA==, tableContent=null), ArticleFig(id=1266342991338820534, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=EN, label=null, caption=null, figureFileSmall=jQVzJw9rlRB4u/09xxVxdQ==, figureFileBig=CRv14GEjdDAwgv6FkE81PA==, tableContent=null), ArticleFig(id=1266342992991376311, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=CN, label=图8, caption=
外场测试场景RSRP值在有无RIS的CDF对比, figureFileSmall=jQVzJw9rlRB4u/09xxVxdQ==, figureFileBig=CRv14GEjdDAwgv6FkE81PA==, tableContent=null), ArticleFig(id=1266342993062679480, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
出射 角度/° | 焦点 距离/m | 聚焦 场强/dBm | LOS径 场强/dBm | 差值/dB |
|---|
| 0 | 0.5 | −27.01 | −33.42 | 6.41 |
| 1 | −24.07 | −33.46 | 9.42 |
| 2 | −26.97 | −37.12 | 10.15 |
| 3 | −29.67 | −37.26 | 7.59 |
| 5 | −32.63 | −37.08 | 4.45 |
| 7 | −36.94 | −33.24 | 3.70 |
| 10 | −36.42 | −30.17 | 6.25 |
| 30 | 0.5 | −27.11 | −34.91 | 7.80 |
| 1 | −26.08 | −35.64 | 9.56 |
| 2 | −27.01 | −36.65 | 9.64 |
| 3 | −30.14 | −37.17 | 7.03 |
| 5 | −33.98 | −36.76 | 2.78 |
| 45 | 0.5 | −27.61 | −33.42 | 5.81 |
| 1 | −24.86 | −35.45 | 10.59 |
| 2 | −28.41 | −36.54 | 8.13 |
| 3 | −30.4 | −37.71 | 7.31 |
| 5 | −35.92 | −38.17 | 2.25 |
| 60 | 0.5 | −33.69 | −32.52 | −1.17 |
| 1 | −27.34 | −33.19 | 5.85 |
| 2 | −31.56 | −34.21 | 2.65 |
| 3 | −34.65 | −38.64 | 3.99 |
| 5 | −41.86 | −38.71 | −3.15 |
), ArticleFig(id=1266342993154954169, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=CN, label=表1, caption=
RIS在不同出射码本下随着接收机距离的变化接收功率
, figureFileSmall=null, figureFileBig=null, tableContent=
出射 角度/° | 焦点 距离/m | 聚焦 场强/dBm | LOS径 场强/dBm | 差值/dB |
|---|
| 0 | 0.5 | −27.01 | −33.42 | 6.41 |
| 1 | −24.07 | −33.46 | 9.42 |
| 2 | −26.97 | −37.12 | 10.15 |
| 3 | −29.67 | −37.26 | 7.59 |
| 5 | −32.63 | −37.08 | 4.45 |
| 7 | −36.94 | −33.24 | 3.70 |
| 10 | −36.42 | −30.17 | 6.25 |
| 30 | 0.5 | −27.11 | −34.91 | 7.80 |
| 1 | −26.08 | −35.64 | 9.56 |
| 2 | −27.01 | −36.65 | 9.64 |
| 3 | −30.14 | −37.17 | 7.03 |
| 5 | −33.98 | −36.76 | 2.78 |
| 45 | 0.5 | −27.61 | −33.42 | 5.81 |
| 1 | −24.86 | −35.45 | 10.59 |
| 2 | −28.41 | −36.54 | 8.13 |
| 3 | −30.4 | −37.71 | 7.31 |
| 5 | −35.92 | −38.17 | 2.25 |
| 60 | 0.5 | −33.69 | −32.52 | −1.17 |
| 1 | −27.34 | −33.19 | 5.85 |
| 2 | −31.56 | −34.21 | 2.65 |
| 3 | −34.65 | −38.64 | 3.99 |
| 5 | −41.86 | −38.71 | −3.15 |
), ArticleFig(id=1266342993456944058, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 场景 | RSRP/dBm |
|---|
| 无RIS | −71.19 |
| 聚焦1 m | −63.30 |
| 聚焦1.5 m | −65.25 |
), ArticleFig(id=1266342993528247227, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1266342973307507552, language=CN, label=表2, caption=
RIS在不同场景下接收功率的平均值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 场景 | RSRP/dBm |
|---|
| 无RIS | −71.19 |
| 聚焦1 m | −63.30 |
| 聚焦1.5 m | −65.25 |
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