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Development of the passive tag RF-ID system at 2.45 GHz  

나영수 (광운대학교 전자공학과)
김진섭 (전자부품연구)
강용철 (전자부품연구)
변상기 (전자부품연구)
나극환 (광운대학교 전자공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.41, no.8, 2004 , pp. 79-85 More about this Journal
Abstract
In this paper, the RF-ID system for ubiquitous tagging applications has been designed, fabricated and analysed. The RF-ID System consists of passive RF-ID Tag and Reader. The passive RF-ID tag consists of rectifier using zero-bias schottky diode which converts RF power into DC power, ID chip, ASK modulator using bipolar transistor and slot loop antenna. We suggest an ASK undulation method using a bipolar transistor to compensate the disadvantage of the conventional PIN diode, which needs large current Also, the slot loop antenna with wider bandwidth than that of the conventional patch antenna is suggested The RF-ID reader consist of patch array antenna, Tx/Rx part and ASK demodulator. We have designed the RF-ID System using EM and circuit simulation tools. According to the measured results, The power level of modulation signal at 1 m from passive RF-ID Tag is -46.76 dBm and frequency of it is 57.2 KHz. The transmitting power of RF-ID reader was 500 mW
Keywords
RF-ID;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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