Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2005.11a
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- Pages.119-122
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- 2005
Change of Recognition Range According to Modulation Index of the 13.56MHz RFID Type B System
13.56MHz RFID Type B 시스템에서 변조지수에 따른 인식거리의 변화
- Kim, Yong-Hee (Dept. of Electronics Eng., University of Incheon) ;
- Yang, Woon-Geun (Dept. of Electronics Eng., University of Incheon) ;
- Yoo, Hong-Jun (JT Corporation)
- Published : 2005.11.26
Abstract
In this paper, we investigated the recognition range according to modulation index for the ISO(International Standards Organization) 14443 13.56MHz contactless Type B RFID(Radio Frequency IDentification) system. We measured recognition range with changing modulation index step by step from 5% to 24% where we used 4 samples of Type B transponder with different resonance frequencies between 13.838MHz and 17.200MHz. While gradually increasing a distance in vertical direction from the center of the reader antenna, we measured the distance where the transponder's PUPI(Pseudo Unique PICC(Proximity IC Card) Identifier) is recognized continuously during 10 seconds and the distance where the transponder's PUPI is recognized at least two times during 5 seconds. From the measurement results, we found that the best recognition ranges were achieved when the reader had modulation index between 11% and 14%.
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