ASK modulator for RFID system using a novel variable DGS resonator

Author

Lee, Yoon-Deock ; Nae, Kwan-Kyu ; Lee, Eun-Jin ; Roh, Hyoung-Hwan ; Jung, Jin-Wook ; Han, Young-Kou ; Jung, Jin-Woo ; Baek, Seok-Cheon ; Jung, Myeong-Sub ; Cho, Hong-Goo ; Oh, Ha-Ryoung ; Seong, Yeong-Rak ; Park, Jun-Seok

Author_Institution

Yonsei Univ., Seoul

fYear

2007

fDate

10-12 Oct. 2007

Firstpage

381

Lastpage

384

Abstract

In this paper, an ASK (amplitude shift keying) modulator with DGS (defected ground structure) is proposed for 900-MHz RFID (radio frequency identification) system. Proposed variable DGS resonator with a varactor diode will be able to adjust the resonance frequency to achieve the ASK modulation. The variable resonance characteristics can be obtained by controlling capacitance of varactor diode, placed on the defected ground. In order to clarify corresponding method, we manufactured RFID system board using variable DGS resonator and measured corresponding performance. As almost 93% of extracted data from modulation index characteristic is satisfied with both EPC class-1 Gen2 Type-B and Type-C standard protocols, we obtained stable tag response of RFID system.

Keywords

amplitude shift keying; protocols; radiofrequency identification; varactors; ASK modulator; RFID system; amplitude shift keying modulator; defected ground structure; modulation index characteristic; radio frequency identification; resonance frequency; standard protocols; varactor diode; variable DGS resonator; Amplitude modulation; Amplitude shift keying; Capacitance; Data mining; Diodes; Manufacturing; Radiofrequency identification; Resonance; Resonant frequency; Varactors;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 2007. EuRAD 2007. European

Conference_Location

Munich

Print_ISBN

978-2-87487-004-0

Type

conf

DOI

10.1109/EURAD.2007.4405017

Filename

4405017