Measurement of wireless power transfer to deep-tissue RFID-based implants using wireless repeater node

Elham Moradi, Lauri Sydanheimo, G. Steven Bova, Leena Ukkonen

Research output: Contribution to journalArticle


In future wireless implants, tiny sensor nodes may be used for detection and treatment of various diseases and for monitoring therapeutic activities. This requires ultralow-power tiny sensors implantable inside different body organs. This letter presents a biomedical RFID system meant for wireless interrogation of deep-tissue millimeter-size implant sensors. The communication system is based on using a repeater device that amplifies the attenuated downlink power and thus extends sensor read distance. This system enables monitoring of different body organs by placing miniature sensor implants inside them. This letter studies wireless power transmission in this system through fabrication of the antennas and conducting two-port wireless link measurements.

Original languageEnglish (US)
Article number7922525
Pages (from-to)2171-2174
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2017



  • Biomedical RFID
  • Biomedical sensor
  • Wireless implant
  • Wireless power transfer
  • Wireless repeater node

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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