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Publications

  • MM Ghanbari, DK Piech, K Shen, SF Alamouti, C Yalcin, BC Johnson, J. M. Carmena, M. M. Maharbiz, R. Muller, “17.5 A 0.8mm3 Ultrasonic Implantable Wireless Neural Recording System With Linear AM Backscattering,” 2019 IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2019.
  • A.J. Zhou*, S.R. Santacruz*, B.C. Johnson*, G.P. Alexandrov, A. Moin, F.L. Burghardt, J.M. Rabaey, J.M. Carmena, R. Muller, “A wireless and artefact-free 128-channel neuromodulation device for closed-loop stimulation and recording in non-human primates”  Nature Biomedical Engineering, 2019. *Joint authorship.
  • D. K. Piech*, B. C. Johnson*, K. Shen, M. M. Ghanbari, K. Y. Liu, R. M. Neely, J. E. Kay, J. M. Carmena, M. M. Maharbiz, R. Muller, “StimDust: A 2.2mm³, implantable wireless precision neural stimulator with ultrasonic power and communication,” arXiv:1807.07590, 2018. *Joint authorship.

  • B. C. Johnson, K. Shen, D. Piech, M. M. Ghanbari, K. Y. Liu, R. Neely, J. M. Carmena, M. M. Maharbiz, R. Muller, “StimDust: A 6.5mm³ wireless ultrasonic implantable peripheral nerve stimulator with 82% peak efficiency,” 2018 IEEE Custom Integrated Circuits Conference (CICC), Apr. 2018. Best Regular Paper Award Finalist.
  • A.J. Zhou*, S.R. Santacruz*, B.C. Johnson*, G.P. Alexandrov, A. Moin, F.L. Burghardt, J.M. Rabaey, J.M. Carmena, R. Muller, “WAND: A 128-channel closed-loop, wireless, artifact-free neuromodulation device”  arXiv:1708.00556, 2017. *Joint authorship.

  • B.C. Johnson, S. Gambini, I. Izyumin, A. Moin, A. Zhou, G. Alexandrov, S.R. Santacruz, J.M. Rabaey, J.M. Carmena, R. Muller, “An implantable 700μW 64-channel neuromodulation IC for simultaneous recording, and stimulation with rapid artifact recovery” IEEE VLSI Circuits Symposium Digest of Technical Papers, 2017.
  • ST Peace, BC Johnson, G Li, ME Kaiser, I Fukunaga, AT Schaefer, AC Molnar, TA Cleland, “Coherent olfactory bulb gamma oscillations arise from coupling independent columnar oscillators” BioRxiv, 213827, 2017.
  • C. Lee, B. Johnson, T. Jung, A. Molnar, “A 72 x 60 Angle-Sensitive SPAD Imaging Array for Lens-less FLIM,” Sensors vol. 16, no. 9, pp. 1422, Sept. 2016.
  • A. Moin, G. Alexandrov, B. C. Johnson, I. Izyumin, F. Burghardt, S. Pannu, E. Alon, R. Muller, J. Rabaey, “Powering and communication for OMNI: A distributed and modular closed-loop neuromodulation device,” 2016 IEEE Engineering in Medicine and Biology Society Conference (EMBC), Aug. 2016.

  • S. Sivaramakrishnan*, C. Lee*, B. Johnson*, A. Molnar, “A Polar Symmetric CMOS Image Sensor for Rotation Invariant Measurement,” Sensors Journal, IEEE, vol. 16, no. 5, pp. 1190-1199, Mar. 2016.  *Joint authorship. Sensors Journal Best Paper Award for 2017
  • C. Lee, B. Johnson, A. Molnar, “Angle Sensitive Single Photon Avalanche Diode,” Appl. Phys. Lett. 106, June 2015.
  • C. Lee, B. Johnson, A. Molnar, “An On-chip 72×60 Angle-Sensitive Single Photon Image Sensor Array for Lens-less Time-resolved 3-D Fluorescence Lifetime Imaging,” 2014 Symposium on VLSI Circuits, pp. 1-2, June 2014.
  • B. Johnson, S. T. Peace, T. A. Cleland, A. Molnar, “A 50𝜇m Pitch, 1120-Channel, 20kHz Frame Rate Microelectrode Array for Slice Recording,” IEEE Biomedical Circuits and Systems Conference (BioCAS), pp. 109-112, Nov. 2013.
  • C. Lee, B. Johnson, A. Molnar, “A Sub-threshold Voltage Ladder Rectifier for Orthogonal Current-reuse Neural Amplifier,” IEEE Biomedical Circuits and Systems Conference (BioCAS), pp. 358-361, Nov. 2013.
  • B. Johnson*, C. Lee*, S. Sivaramakrishnan*, A. Molnar, “A High-Speed Polar-Symmetric Imager for Contact-less, Real-time Readout and Calibration of Rotational Inertial Sensors,” Sensors, 2013 IEEE, pp. 1-4, Nov. 2013. *Joint authorship.
  • B. Johnson, S. T. Peace, A. Wang, T. A. Cleland, A. Molnar, “A 768-Channel CMOS Microelectrode Array with Angle Sensitive Pixels for Neuronal Recording,” Sensors Journal, IEEE, vol. 13, no. 9, pp. 3211-3218, Sept. 2013.
  • B. Johnson, A. Molnar, “An Orthogonal Current-Reuse Amplifier for Multi-Channel Sensing,” IEEE J. Solid-State Circuits, vol. 48, no. 6, pp. 1487-1496, June 2013.
  • C. Andrews, L. Diamente, D. Yang, B. Johnson, A. Molnar, “A Wideband Receiver With Resonant Multi-Phase LO and Current Reuse Harmonic Rejection Baseband,” IEEE J. Solid-State Circuits, vol. 48, no. 5, pp. 1188-1198, May 2013.
  • C. Andrews, L. Diamente, B. Johnson, A. Molnar, “A <12mW, 0.7-3.2GHz Receiver With Resonant Multi-Phase LO and Current Reuse Harmonic Rejection Baseband,” Radio Frequency Integrated Circuits Symposium (RFIC), 2012 IEEE, pp. 43-46, June 2012.
  • B. Johnson, S. T. Peace, T. A. Cleland, A. Molnar, “A Scalable CMOS Sensory Array for Neuronal Recording and Imaging,” Sensors, 2011 IEEE, pp. 924-927, Oct. 2011.
  • B. Johnson, D. DeTomaso, A. Molnar, “A Low-Power Orthogonal Current-Reuse Amplifier for Parallel Sensing Applications,” IEEE European Solid-State Circuits Conference (ESSCIRC), pp. 318-321, Sept. 2010.