Implantable wireless telemetry boards for in Vivo transocular transmission

Eric Y. Chow, Chin Lung Yang, Arthur Chlebowski, Sungwook Moon, William J. Chappell, Pedro P. Irazoqui

Research output: Contribution to journalArticlepeer-review


We report live animal studies that verify and quantify successful transocular transmission of data from a miniature low-power implant. To minimize damage, implantation within layers of the eye requires an ultrasmall device on a scale of just a few millimeters on each side and less than 500 μm in thickness. A high-frequency transmitter integrated circuit (IC) was designed, fabricated, and bonded onto a board containing an antenna, matching network components, and interconnects. The transmitter must achieve sufficient efficiency to draw minimal power from the limited onboard storage array while outputting a sufficiently large signal to overcome tissue-induced attenuation. Two different versions of the system were developed, one using a low-temperature co-fired ceramic material for the substrate and the other using silicon. Animal studies performed using live rabbits followed by empirical measurements verified the feasibility of a wireless telemetry scheme for a low-power miniature ocular implant.

Original languageEnglish (US)
Article number4682668
Pages (from-to)3200-3208
Number of pages9
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number12
StatePublished - Dec 2008
Externally publishedYes


  • Biological system modeling
  • Biomedical applications of EM radiation
  • Biomedical telemetry
  • Implantable biomedical devices

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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