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http://dx.doi.org/10.6109/JKIICE.2008.12.1.130

Design of Low-Power High-Performance Analog Circuits for UHF Band RFID Tags  

Shim, Hyun-Chul (인천대학교 전자공학과)
Cha, Chung-Hyeon (인천대학교 전자공학과)
Park, Jong-Tae (인천대학교 전자공학과)
Yu, Chong-Gun (인천대학교 전자공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.12, no.1, 2008 , pp. 130-136 More about this Journal
Abstract
This paper describes a low-power high-performance analog front-end block for $UHF(860{\sim}960MHz)$ band RFID tag chips. It satisfies ISO/IEC 18000-6 type C(EPCgolbal class1. generation2.) and includes a memory block for test. For reducing power consumption, it operates with a internally generated power supply of 1V. An ASK demodulator using a current-mode schmitt trigger is proposed and designed. The proposed demodulator has an error rate as low as 0.014%. It is designed using a 0.18um CMOS technology. The simulation results show that the designed circuit can operate properly with an input as low as $0.2V_{peak}$ and consumes $2.63{\mu}A$. The chip size is $0.12mm^2$
Keywords
UHF; RFID; Tag; Current-mode ASK demodulator;
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