Long range passive RFID-tag for sensor networks

Hitoshi Kitayoshi, Kunio Sawaya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

31 Citations (Scopus)


A novel passive RFID tag for a long reading range composed of a divided microstrip antenna and a rectifying circuit boosting the DC voltage is proposed. Experimental study of fabricated passive tag using varactor diodes, in which 30 m range response can be achieved at 860-950 MHz band, is described. Passive tags for temperature-monitoring system at 2.45 GHz band is also fabricated to demonstrate validity of proposed tags for a range longer than 9 m. The tags have sizes of 90×60×4 mm and 60×25×4 mm for 900 MHz and 2.45 GHz bands, respectively.

Original languageEnglish
Title of host publicationVTC 2005-Fall
Subtitle of host publicationMid Way Through the Decade - Technology Past, Present and Future
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)0780391527
Publication statusPublished - 2005 Jan 1
Event62nd Vehicular Technology Conference, VTC 2005 - Dallas, United States
Duration: 2005 Sep 252005 Sep 28

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252


Other62nd Vehicular Technology Conference, VTC 2005
Country/TerritoryUnited States


  • long range transponder
  • microstrip antenna
  • multiplying rectifier
  • passive RFID
  • sensor networks

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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