DocumentCode
3462033
Title
A method to improve isolation for RFID applications
Author
Kim, Jaekwon ; Yoon, Hyunchul ; Park, Jooyong ; Burm, Jinwook
Author_Institution
Dept. of Electron. Eng., Sogang Univ., Seoul, South Korea
Volume
3
fYear
2005
fDate
4-6 Oct. 2005
Abstract
The isolation between transmitter and receiver has been a critical problem in a pulse-modulated RFID (radio frequency identification) system where transmitter and receiver use the identical frequency. A method using a switch, a mixer, a BPF (band-pass filter), and an additional oscillator in the transmitter is proposed to improve the isolation between transmitter and receiver in an RFID system. The proposed system up-converts the outgoing wave from a frequency different from the received signal and improves the isolation. The proposed method provided additional 20 dB improvement on the isolation.
Keywords
band-pass filters; mixers (circuits); radio receivers; radio transmitters; radiofrequency identification; band-pass filter; isolation improvement; radiofrequency identification; Band pass filters; Optical transmitters; Passive RFID tags; Power supplies; Radio frequency; Radio transmitters; Radiofrequency identification; Receivers; Surface acoustic waves; Switches;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 2005 European
Print_ISBN
2-9600551-2-8
Type
conf
DOI
10.1109/EUMC.2005.1610317
Filename
1610317
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