STUDY ON THE DEMODULATION STRUCTURE OF READER RECEIVER IN A PASSIVE RFID ENVIRONMENT

In this paper, we present a demodulation structure suitable for a reader receiver in a passive Radio Frequency IDentification (RFID) environment. In a passive RFID configuration, undesirable DC-offset phenomenon may appear in the baseband of the reader receiver. As a result, this DC-offset phenomeno...

Full description

Saved in:
Bibliographic Details
Published inElectromagnetic waves (Cambridge, Mass.) Vol. 91; pp. 243 - 258
Main Authors Bae, Ji-Hoon, Choi, Won-Kyu, Kim, Jeong-seok, Choi, Gil-Young, Chae, Jong-Suk
Format Journal Article
LanguageEnglish
Published Cambridge Electromagnetics Academy 2009
Online AccessGet full text

Cover

More Information
Summary:In this paper, we present a demodulation structure suitable for a reader receiver in a passive Radio Frequency IDentification (RFID) environment. In a passive RFID configuration, undesirable DC-offset phenomenon may appear in the baseband of the reader receiver. As a result, this DC-offset phenomenon can severely degrade the performance of the extraction of valid information from a received signal in the reader receiver. To mitigate the DC-offset phenomenon, we propose a demodulation structure to reconstruct a corrupted signal with the DC-offset phenomenon, by extracting useful transition information from the corrupted signal. It is shown that the proposed method can successfully detect valid data from a received signal, even when the received baseband signal is distorted with the DC-offset phenomenon.
ISSN:1559-8985
1070-4698
1559-8985
DOI:10.2528/PIER09021103