On the Use of Knitted Antennas and Inductively Coupled RFID Tags for Wearable Applications

Damiano Patron, William Mongan, Timothy P. Kurzweg, Adam Fontecchio, Genevieve Dion, Endla K. Anday, Kapil R. Dandekar

Research output: Contribution to journalArticlepeer-review

95 Scopus citations


Recent advancements in conductive yarns and fabrication technologies offer exciting opportunities to design and knit seamless garments equipped with sensors for biomedical applications. In this paper, we discuss the design and application of a wearable strain sensor, which can be used for biomedical monitoring such as contraction, respiration, or limb movements. The system takes advantage of the intensity variations of the backscattered power (RSSI) from an inductively-coupled RFID tag under physical stretching. First, we describe the antenna design along with the modeling of the sheet impedance, which characterizes the conductive textile. Experimental results with custom fabricated prototypes showed good agreement with the numerical simulation of input impedance and radiation pattern. Finally, the wearable sensor has been applied for infant breathing monitoring using a medical programmable mannequin. A machine learning technique has been developed and applied to post-process the RSSI data, and the results show that breathing and non-breathing patterns can be successfully classified.

Original languageEnglish (US)
Article number7458913
Pages (from-to)1047-1057
Number of pages11
JournalIEEE transactions on biomedical circuits and systems
Issue number6
StatePublished - Dec 2016

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Electrical and Electronic Engineering


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