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ANTENNA FOR NEAR FIELD COMMUNICATION CAPABLE OF PREVENTING THE GENERATION OF A SHADED AREA AND RFID(RADIO FREQUENCY IDENTIFICATION) READER HAVING THE SAME
ANTENNA FOR NEAR FIELD COMMUNICATION CAPABLE OF PREVENTING THE GENERATION OF A SHADED AREA AND RFID(RADIO FREQUENCY IDENTIFICATION) READER HAVING THE SAME
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机译:具有防止阴影区域生成的近场通信天线和具有相同功能的RFID(射频识别)阅读器
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摘要
PURPOSE: An antenna for near field communication and a RFID(Radio Frequency Identification) reader having the same are provided to accurately obtain the information of a RFID without frequency variation tag using the frequency of a UHF(Ultra High Frequency) band.;CONSTITUTION: A signal supply part(110) supplies a signal which is inputted to an antenna port. A balun(balanced-to-unbalanced transformer) part(120) is connected to the signal supply part. The balun part changes the signal provided from the signal supply part into a 0 and 180 degree phase of a balanced signal. A resonant cavity(130) is connected to the balun part and resonates the signal which is transformed into the phase. Load impedance(140) is arranged between both ends of the resonant cavity and forms a loop.;COPYRIGHT KIPO 2012
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