Title :
A 2.45-GHz Near-Field RFID System With Passive On-Chip Antenna Tags
Author :
Chen, Xuesong ; Yeoh, Wooi Gan ; Choi, Yeung Bun ; Li, Hongyu ; Singh, Rajinder
Author_Institution :
Inst. of Microelectron., A*STAR, Singapore
fDate :
6/1/2008 12:00:00 AM
Abstract :
The design of a 2.45-GHz near-field RF identification (RFID) system with passive on-chip antenna (OCA) tags is very challenging as the efficiency of RF power conversion is very low. It poses multidisciplinary research challenges such as ultra-low-power circuits design, semiconductor process technology, and integrated antenna design. This paper describes the designs of such an RFID system, the reader, and OCAs, as well as the passive tag integrated circuits in detail. The passive tag chip with 128-bit nonvolatile memory has been realized using CMOS 0.13- technology. The OCA is fabricated on top of the chip using post-processing technology. The complete RFID tag with an integrated OCA is smaller than 0.5- with a thickness of 0.1 mm. With the reader generating an output power of 0.5 W, the RFID system is able to perform with RF read/write functions at a distance of .
Keywords :
CMOS integrated circuits; microwave antennas; radiofrequency identification; CMOS technology; RF identification system; RF power conversion; frequency 2.45 GHz; integrated antenna design; near-field RFID system; nonvolatile memory; passive on-chip antenna tags; passive tag integrated circuits; power 0.5 W; semiconductor process technology; size 0.1 mm; ultralow-power circuit design; Backscatter; CMOS; RF identification (RFID); near field; nonvolatile memory; on-chip antenna (OCA); rectifier;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2008.921746
