{"title":"Circularly Polarized Broadband Co-Planar Waveguide fed Antenna for 2.45 GHz RFID Reader","authors":"A. Birwal, Vipul Kaushal, Kamlesh Patel","doi":"10.1109/RFID-TA53372.2021.9617300","DOIUrl":null,"url":null,"abstract":"In this paper, a bi-directional coplanar-waveguide (CPW)-fed antenna with circular polarization (CP) is presented for radio frequency identification (RFID) reader applications. By incorporating an inverted L-shaped arm at the left side and a and tuning stub at the right side of ground plane in a conventional CPW-fed monopole antenna, a wide impedance bandwidth and axial-ratio bandwidth (ARBW) is achieved. The antenna geometry is square in shape and printed on one side of FR4 substrate only, which consumes an overall dimension of $60 \\times 60$ mm2 with a thickness of 1.5 mm. The antenna is simulated and the simulation results shows an impedance bandwidth $(\\mathrm{S}11 \\lt -10$ dB) of 40.2% (2.18–3.28 GHz) and ARBW ($\\lt3$ dB) of 28.3% (2.03-2.7 GHz), respectively. The peak gain of the proposed antenna is 3.17 dBi in both ±Z direction. The antenna is suitable for Internet of Things (IoT) based RFID applications.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RFID-TA53372.2021.9617300","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
In this paper, a bi-directional coplanar-waveguide (CPW)-fed antenna with circular polarization (CP) is presented for radio frequency identification (RFID) reader applications. By incorporating an inverted L-shaped arm at the left side and a and tuning stub at the right side of ground plane in a conventional CPW-fed monopole antenna, a wide impedance bandwidth and axial-ratio bandwidth (ARBW) is achieved. The antenna geometry is square in shape and printed on one side of FR4 substrate only, which consumes an overall dimension of $60 \times 60$ mm2 with a thickness of 1.5 mm. The antenna is simulated and the simulation results shows an impedance bandwidth $(\mathrm{S}11 \lt -10$ dB) of 40.2% (2.18–3.28 GHz) and ARBW ($\lt3$ dB) of 28.3% (2.03-2.7 GHz), respectively. The peak gain of the proposed antenna is 3.17 dBi in both ±Z direction. The antenna is suitable for Internet of Things (IoT) based RFID applications.