Chipless RFID readers for frequency-coded tags: time-domain or frequency-domain?

Javad Aliasgari, Mohammadali Forouzandeh, Nemai Karmakar

Research output: Contribution to journalArticleResearchpeer-review

36 Citations (Scopus)


Printable ultra-wideband (UWB) frequency-coded chipless radio frequency identification (RFID) tags are suitable candidates for barcode replacement toward developing smart objects. A high-performance and low-cost UWB chipless RFID reader is needed to interrogate UWB frequency-coded tags. Time-domain and frequency-domain techniques are the most popular approaches employed in readers to extract the tag information. This paper reviews the state-of-the-art frequency- and time-domain chipless RFID readers for reading frequency-coded tags. A comprehensive study on the main challenges in designing a sound reader such as detection range, immunity to the interferences, detection speed and accuracy, cost, reader profile, and compatibility with hybrid tags is conducted. Finally, a new reader architecture for reading hybrid tags to achieve higher data capacity is presented. The reader is capable of detecting a chiplesstag independent of its orientation and has considerable potential for commercial realization.

Original languageEnglish
Pages (from-to)146-158
Number of pages13
JournalIEEE Journal of Radio Frequency Identification
Issue number2
Publication statusPublished - Jun 2020


  • Chipless radio frequency identification (RFID)
  • frequency-codedchipless tag
  • frequency-domain reader
  • hybrid tag
  • time-domain (impulse radio) reader
  • ultra-wideband (UWB) RFID reader

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