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SAW ID Tag and Receiver System for Passive RFID System Application  

Kim, Jae-Kwon (Dept. of Electronic Eng., Sogang University)
Park, Joo-Yong (Dept. of Electronic Eng., Sogang University)
Burm, Jin-Wook (Dept. of Electronic Eng., Sogang University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.45, no.4, 2008 , pp. 64-71 More about this Journal
Abstract
SAW (Surface Acoustic Waves) ID (identification) tags have been designed and implemented for RFID (Radio frequency IDentification) systems. With SAW ID tag of pulse position encoding method, the data capacity increased 3 times compared with SAW ID tag of amplitude on/off method. Two different kinds of SAW ID tag receiver systems, heterodyne and homodyne receiver systems, were made. The direct conversion receiver showed better isolation property, 10 dB improvement than the heterodyne receiver to increase wireless interrogation distance.
Keywords
Surface Acoustic Wave; Passive RFID system; Heterodyne receiver; Direct conversion;
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