{"title":"A compact circularly polarized (CP) substrate integrated waveguide (SIW) cavity-backed antenna with controlled axial ratio","authors":"Shankaragouda M. Patil, Rajeshkumar Venkatesan","doi":"10.1002/dac.5951","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>A new circular cavity-backed slot antenna, which produces unidirectional radiation patterns, has been developed for wireless communication systems. The antenna utilizes substrate-integrated waveguide (SIW) technology to create a low-profile cavity. The metal cladding on top of the cavity has an engraved circular ring slot for radiation, and a microstrip transition feeding mechanism is used to excite the perturbed circular slot antenna element located away from the centre of the cavity. Two rectangular cuts, including slots and a shorted via probe, improve radiation performance and bandwidth matching by nearly −40 dB over the working frequency range. An optimized spacing of 0.6 mm is established between the patch centre and the input microstrip transition feed, which produces a circularly polarized (CP) wave. The antenna uses CP SIW technology to operate within a wide impedance bandwidth of 12.18% (10.02–11.31 GHz) below −10 dB and an ARBW of 320 MHz (10.40–10.72 GHz). Both experimental and simulated results agree on s-parameters, and the antenna's gain, axial ratio, and radiation patterns are consistent. With 7.45 dB CP gain and planar integration, the antenna radiates unidirectional, making it suitable for lightweight wireless broadband applications.</p>\n </div>","PeriodicalId":13946,"journal":{"name":"International Journal of Communication Systems","volume":"37 18","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Communication Systems","FirstCategoryId":"94","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/dac.5951","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
A new circular cavity-backed slot antenna, which produces unidirectional radiation patterns, has been developed for wireless communication systems. The antenna utilizes substrate-integrated waveguide (SIW) technology to create a low-profile cavity. The metal cladding on top of the cavity has an engraved circular ring slot for radiation, and a microstrip transition feeding mechanism is used to excite the perturbed circular slot antenna element located away from the centre of the cavity. Two rectangular cuts, including slots and a shorted via probe, improve radiation performance and bandwidth matching by nearly −40 dB over the working frequency range. An optimized spacing of 0.6 mm is established between the patch centre and the input microstrip transition feed, which produces a circularly polarized (CP) wave. The antenna uses CP SIW technology to operate within a wide impedance bandwidth of 12.18% (10.02–11.31 GHz) below −10 dB and an ARBW of 320 MHz (10.40–10.72 GHz). Both experimental and simulated results agree on s-parameters, and the antenna's gain, axial ratio, and radiation patterns are consistent. With 7.45 dB CP gain and planar integration, the antenna radiates unidirectional, making it suitable for lightweight wireless broadband applications.
期刊介绍：
The International Journal of Communication Systems provides a forum for R&D, open to researchers from all types of institutions and organisations worldwide, aimed at the increasingly important area of communication technology. The Journal''s emphasis is particularly on the issues impacting behaviour at the system, service and management levels. Published twelve times a year, it provides coverage of advances that have a significant potential to impact the immense technical and commercial opportunities in the communications sector. The International Journal of Communication Systems strives to select a balance of contributions that promotes technical innovation allied to practical relevance across the range of system types and issues.
The Journal addresses both public communication systems (Telecommunication, mobile, Internet, and Cable TV) and private systems (Intranets, enterprise networks, LANs, MANs, WANs). The following key areas and issues are regularly covered:
-Transmission/Switching/Distribution technologies (ATM, SDH, TCP/IP, routers, DSL, cable modems, VoD, VoIP, WDM, etc.)
-System control, network/service management
-Network and Internet protocols and standards
-Client-server, distributed and Web-based communication systems
-Broadband and multimedia systems and applications, with a focus on increased service variety and interactivity
-Trials of advanced systems and services; their implementation and evaluation
-Novel concepts and improvements in technique; their theoretical basis and performance analysis using measurement/testing, modelling and simulation
-Performance evaluation issues and methods.
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