Phase Based Near-Field Source Localization for UHF RFID

The localization of ultra high frequency (UHF) radio frequency identification (RFID) transponders with the aid of radio frequency (RF) signals which are exchanged between an RFID reader and an RFID tag is a widely addressed topic of current research. Minimization of the mean localization error under multipath conditions and with limited bandwidth is hereby the most challenging task. This workshop gives an introduction in the fundamentals of RFID localization and reviews published localization techniques. The workshop especially focuses on high-precision phase based 3D near-field source localization (NFSL) techniques. It is shown how real and synthetic antenna arrays as well as MIMO techniques can be used to achieve cm-accuracy under multipath conditions with standard technology.