Sub-nanowatt ultrasonic bio-telemetry using B-scan imaging

Sri Harsha Kondapalli, Shantanu Chakrabartty

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Goal: The objective of this paper is to investigate if the use of a B-scan ultrasound imaging system can reduce the energy requirements, and hence the power-dissipation requirements to support wireless bio-telemetry at an implantable device. Methods: B-scan imaging data were acquired using a commercial 256-element linear ultrasound transducer array which was driven by a commercial echoscope. As a transmission medium, we used a water-bath and the operation of the implantable device was emulated using a commercial-off-the-shelf micro-controller board. The telemetry parameters (e.g. transmission rate and transmission power) were wirelessly controlled using a two-way radio-frequency transceiver. B-scan imaging data were post-processed using a maximum-threshold decoder and the quality of the ultrasonic telemetry link was quantified in terms of its bit-error-rate (BER). Results: Measured results show that a reliable B-scan communication link with an implantable device can be achieved at transmission power levels of 100 pW and for implantation depths greater than 10 cm. Conclusions: In this paper we demonstrated that a combination of B-scan imaging and a simple decoding algorithm can significantly reduce the energy-budget requirements for reliable ultrasonic telemetry.

Original languageEnglish
Article number9329112
Pages (from-to)17-25
Number of pages9
JournalIEEE Open Journal of Engineering in Medicine and Biology
StatePublished - 2021


  • B-Scan imaging
  • echoscope
  • low-power communication
  • ultrasound telemetry


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