On the application of the EM-imaging for chipless RFID tags

Mohammad Zomorrodi, Nemai Chandra Karmakar

Research output: Contribution to journalArticleResearchpeer-review


The electromagnetic (EM) imaging technique at mm-band 60 GHz is proposed for data encoding purpose in the chipless Radio Frequency Identification (RFID) systems. The fully printable chipless RFID tag comprises tiny conductive EM polarizers to create high cross-polar radar cross-section. Synthetic aperture radar approach is applied for formation of the tag’s EM-image and revealing the tag’s content. The achieved high data encoding capacity of 2 bits/cm2 in this technique based on a fully printable tag is very convincing for many applications. The system immunity to multipath interference, bending effect, and printing inaccuracy suggests huge potentials for low-cost item tagging. Tags are also readable through a tick paper envelop; hence secure identification is provided by the proposed technique.
Original languageEnglish
Pages (from-to)86 - 96
Number of pages11
JournalWireless Power Transfer
Issue number2
Publication statusPublished - 2015


  • mm-wave
  • EM-imaging
  • Synthetic aperture radar

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