Senior Engineer in Research
Climate and Space Sciences and Engineering
1204 SRBClimate & Space Research Building University of Michigan 2455 Hayward Street Ann Arbor, MI 48109-2143
Bachelor of Science in Electrical Engineering, University of Michigan, Ann Arbor
Part time student mentor for project based classes.
Electrical engineer with a background in analog and digital circuit design as well as microcontroller and FPGA programming. Contributed to both space and terrestrial based projects. Designed stepper motor controls for the TIDI instrument, precipitation sampling systems for the School of public Health, high voltage power supplies, digital electronics for the MESSENGER FIPS instrument, a highly sensitive electric field sensor (patent), digitizing circuitry and signal processing algorithms for radiometry instruments, a method for accurate time-to-digital conversion within an FPGA (patent), an ultra low power snow pack instrument, a Faraday cup amplifier for the upcoming Europa Clipper, designed and built magnetic torque-rods for the Cygnss constellation of spacecraft, RF oscillators for quadropole and ion trap mass spectrometers, an optical communication link for a time-of-flight mass spectrometer, and in the distant past, industrial motor controls and sensing systems.
Professional Engineer License
Patents (Course concentration: power systems, communications, digital electronics, instrumentation)
4,906,926 – Proximity Sensor for Hostile Environments
6,481,939 – Tool Tip Conductivity Contact Sensor
8,536,879 – Rotating Electric Field Sensor
8,219,346 – High resolution time measurement in a FPGA
Renno, N., et al., “A Miniature Sensor for Electrical Field Measurements in Dusty Planetary Atmospheres”, Journal of Physics: Conference Series 142, (2008).
Ruf, C., et al., “Lightweight Rainfall Radiometer STAR Aircraft Sensor”, Proc. of the 2002 IEEE International Geoscience and Remote Sensing Symposium, Toronto, June 2002.
Ruf, C., et al., Lightweight Rainfall Radiometer STAR Aircraft Sensor”, Proc. of NASA Earth Science Technology Conference, Pasadena, CA, June 2002.
Tanner, A., et al., “Prototype Development of a Geostationary Synthetic Thinned aperture Radiometer, GeoSTAR”, Proc. of NASA Earth Science Technology Conference, Palo Alto, CA, June 2004.
Lambrigtsen, B.H., S.T. Brown, S.J. Dinardo, T.C. Gaier, P.P. Kanagaslahti, A.B. Tanner, J.R. Piepmeier, C.S. Ruf, S.M. Gross, S. Musko and S. Rogacki, “GeoSTAR – A Breakthrough in Remote Sensing Technology,” Proc. of NASA Earth Science Technology Conference, College Pk., MD, 27-29 June 2006.
Tanner, A.B., W.J. Wilson, B.H. Lambrigtsen, S.J. Dinardo, S.T. Brown, P. Kangaslahti, T.C. Gaier, C.S. Ruf, S.M. Gross, B.H. Lim, S. Musko and S. Rogacki, “Initial Results of the Geosynchronous Thinned Array Radiometer (GeoSTAR),” Proc. 2006 IEEE International Geoscience and Remote Sensing Symposium, Denver, CO, 31 Jul – 4 Aug 2006.
Rogacki,S., Zurbuchen,T. “A time digitizer for space instrumentation using a field programmable gate array” Review of Scientific Instruments (Vol.84, Issue 8)
Steven A. Rogacki Member, IEEE, Jonathan A. Pellish, Member, IEEE, Steven Persyn, Member, IEEE, Paul W. Marshall, Fellow, IEEE, and John Stone, Member, IEEE “VCSEL and Photodiode Proton Test Results for an Optical Communications Link”, ID# 1193 / 2013 IEEE Radiation Effects Data Workshop