Application of Quasi log-periodic antenna for UHF passive RFID tag design featuring constant power transmission coefficient over broadband operation

Heng-Tung Hsu*, F. Y. Kuo, C. H. Chang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Quasi log-periodic antenna configuration was adopted to design passive UHF RFID tag for the first time. With proper adjustment of the physical parameters which in turn adjusted the induced coupling levels to the dipole-based radiator, the designed antenna was capable of providing constant reactance from 860 MHz to 960 MHz covering the whole spectrum of UHF passive RFID system. In addition to the omni-directional radiation pattern and good overall radiation efficiency provided by the antenna, the proposed design features constant power transmission coefficient over 860 MHz to 960 MHz which is essential to guarantee consistent read range in passive RFID systems.

Original languageEnglish
Pages (from-to)575-586
Number of pages12
JournalJournal of Electromagnetic Waves and Applications
Volume24
Issue number5-6
DOIs
StatePublished - 1 Mar 2010

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