Open AccessInvestigations into improving the detectability of self‐resonant RFID tags
Author(s) -
AlAzzawi Baraa F.,
Rigelsford Jonathan M.,
Langley Richard J.
Publication year - 2018
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2017.1205
Subject(s) - resonator , lossy compression , resonance (particle physics) , computer science , radio frequency identification , window (computing) , electronic engineering , aperture (computer memory) , chipless rfid , acoustics , materials science , optoelectronics , engineering , physics , computer security , particle physics , artificial intelligence , operating system
This study describes an experimental investigation into improving the detectability of self‐resonant structures. Passive self‐resonant structures have been used as an alternative to active devices in many applications including radio‐frequency identification (RFID) due to their long lifetime and low manufacturing cost. They can be used to store information in terms of the presence or the absence of resonance peaks at a given frequency window. This work investigates practical validation of gain enhancement techniques, aiming to improve the resonance characteristics of passive RFID tags to increase their read range and allow them to operate in highly lossy mediums. Two passive resonator designs are studied: a uniform cross‐shaped resonator and a folded (gammadion) cross having a physical aperture 45% less than that of the uniform cross. Arrays of elements have been used to improve the detectability of the structure. Measurement settings have also been investigated in order to achieve higher levels of detectability.