Novel chipless RFID high resolution crack sensor based on SWB technology

Shuvashis Dey, Prasanna Kalansuriya, Nemai Chandra Karmakar

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)


A novel chipless RFID based structural health monitoring sensor is proposed in this paper. By using the time domain reflectometry (TDR) based technique, this device enables a wireless, low-cost and pervasive sensing system for detecting the presence of crack in a structure. The proposed sensor is designed on the Taconic TLX-0 substrate and it integrates a super wide band (SWB) antenna with a long transmission line. The SWB antenna covers a bandwidth of 2-20 GHz which offers extremely short time domain pulses. This eventually enables a high-resolution crack sensing scheme that results in higher accuracy and greater precision. A thorough analysis on the designed sensors with a straight and a meandered transmission line is carried out and a comparative study between the SWB and UWB technologies is performed to imply the superiority of the proposed technique. The experimental results from a fabricated prototype of the sensor validate the theoretical analysis.

Original languageEnglish
Pages (from-to)2908-2920
Number of pages13
JournalIEEE Sensors Journal
Issue number3
Publication statusPublished - 1 Feb 2021


  • Chipless RFID
  • crack
  • structural health monitoring
  • super wide band
  • time domain reflectometry

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