Bidirectional communication in an HF hybrid organic/solution-processed metal-oxide RFID tag

K. Myny, M. Rockelé, A. Chasin, D.V. Pham, J. Steiger, S. Botnaras, D. Weber, B. Herold, J. Ficker, B. van der Putten, G.H. Gelinck, J. Genoe, W. Dehaene, P. Heremans

Research output: Contribution to journalArticleAcademicpeer-review

25 Citations (Scopus)


A bidirectional communication protocol allows radio-frequency identification (RFID) tags to have readout of multiple tags in the RF field without collision of data. In this paper, we realized bidirectional communication between a reader system and thin-film RFID tag by introducing a novel protocol for the uplink communication. Amplitude modulation on the 13.56-MHz base carrier is used to transmit the uplink clock, whereas the data is modulated by varying pulsewidths on this clock. The technology for the thin-film RFID tags combines metal-oxide n-type transistors with organic p-type transistors resulting in a hybrid complementary technology flow. The design of the RFID tag comprises of two metal-oxide transistor rectifiers and a comparator to decode the data transmitted by the reader and different code generators that send 8 bits or 96 bits to the reader.

Original languageEnglish
Article number6828771
Pages (from-to)2387-2393
Number of pages7
JournalIEEE Transactions on Electron Devices
Issue number7
Publication statusPublished - 2014
Externally publishedYes


  • Bidirectional communication
  • metal-oxide
  • organic
  • radio-frequency identification (RFID)
  • radio-frequency identification tags
  • thin-film
  • thin-film transistor (TFT).


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