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UHF 대역 RFID 전파경로에서의 전파간섭 모델링 및 채널 운용 방안 제안
文永周(Young-Joo Moon),呂善美(Seon-Mi Yeo),田富元(Bu-Won Jeon),盧衡煥(Hyoung-Hwan Roh),鄭明燮(Myoung-Sub Joung),吳夏嶺(Ha-Ryoung Oh),成榮洛(Yeong-Rak Seong),朴准奭(Jun Seok Park) 대한전기학회 2008 전기학회논문지 Vol.57 No.11
Auto-ID industries and their services have been improved since decades ago, and radio frequency identification (RFID) has been contributing in many applications. Product management can be the foremost example. In our industrial experiences, RFID in ultra high frequency (UHF) band provides much longer interrogation ranges than that of 13.56㎒; many more applications exist thereby. There should be several interesting and useful ideas on UHF RFID; however, those ideas can be limited due to the inevitable environmental circumstances that restrict the interrogation range in shorten value. This paper discusses the propagation interference among different types of readers (e.g, mobile RFID readers in stationary reader zone) in dense-reader environment. In most cases, UHF RFIDs in Korea will be dependent on the UHF mobile RFIDs. In this sense, the UHF mobile users accidently move into the stationary reader's interrogation zone. This is serious problem. In this paper, we analyze propagation loss and propose the effective channel allocation scheme that can contribute developing less-invasive UHF RFID networks. The simulation and practical measurement process using the commercial CAD tools and measurement equipments are presented.