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Dr. Charles Baylis

Associate Professor, Electrical & Computer Engineering

BSEE, University of South Florida (2002)
MSEE, University of South Florida (2004)
PhD, University of South Florida (2007)
Academic Specialization: Wireless and Microwave Active Circuits

Teaching:

  • ELC 5338 - High Frequency Electronics

Offering Graduate Research Opportunities in:

  • RF/Microwave Amplifier and Oscillator Design
  • Transistor Modeling and Related Measurement Techniques
  • Biological Applications of RF/Microwave Measurements

Education:

  • Ph.D., Electrical Engineering, University of South Florida, 2007.
  • M.S. Electrical Engineering, University of South Florida, 2004.
  • B.S. Electrical Engineering with Minor in Mathematics, University of South Florida, 2002.

Publications and Conference Presentations

  • C. Baylis, L. Dunleavy, S. Lardizabal, R.J. Marks II, and A. Rodriguez, "Efficient Optimization Using Experimental Queries: A Peak-Search Algorithm for Efficient Load-Pull Measurements," Journal of Advanced Computational Intelligence and Intelligent Informatics, Vol. 15, No. 1, January 2011.
  • L. Dunleavy, C. Baylis, W. Curtice, and R. Connick, "Modeling GaN HEMT Devices," Microwave Journal, October 2010.
  • C. Baylis, L. Wang, M. Moldovan, J. Martin, H. Miller, L. Cohen, and J. deGraaf, "Designing for Spectral Comformity: Achieving Linearity and Efficiency in Power Amplifiers," IEEE Conference on Waveform Diversity, Niagara Falls, Ontario, Canada, August 2010.
  • C. Baylis, M. Moldovan, L. Wang, J. Martin, L. Cohen, and J. de Graaf, "LINC Power Amplifiers for Reducing Out-of-Band Spectral Re-growth: A Comparative Study," IEEE Wireless and Microwave Technology Conference, Melbourne, Florida, April 2010.
  • C. Baylis, J. Perry, M. Moldovan, R.J. Marks II, and L. Dunleavy, "Use of a Step-Response Approximation for Thermal Transient Modeling in Power MOSFETs," Automatic RF Techniques Group Conference, Broomfield, Colorado, December 2009.
  • S. Meena, C. Baylis, L. Dunleavy, and M. Marbell, "Duty Cycle Dependent Pulsed IV Simulation and Thermal Time Constant Extraction for LDMOS Transistors," Submitted September 2009 to Automatic RF Techniques Group (ARFTG) Conference, Broomfield, Colorado, December 2009.
  • C. Baylis and L. Dunleavy (invited), "Electrothermal Nonlinear FET Modeling for Spectral Prediction," 2009 IEEE Electromagnetic Compatibility Symposium, Austin, Texas, August 2009.
  • C. Baylis, L. Dunleavy, and R. Connick (invited), "Modeling Considerations for GaN HEMT Devices," 2009 IEEE Wireless and Microwave Technology Conference (WAMICON), Clearwater, Florida, April 2009.
  • C. Baylis and R. Jean, "A Course Sequence in High Frequency Electronics with Hands-On Laboratory Experiments," American Society of Engineering Education (ASEE) Gulf Southwest Conference, Waco, Texas, March 2009.
  • S. Somasundaram Meena, C. Baylis, and L. Dunleavy, "Benchmarking Comparison of Thermal and Diode Sensors for Pulsed Power Measurement," 72nd Automatic RF Techniques Group Conference, Portland, Oregon, December 2008.
  • C. Baylis and L. Dunleavy, "Voltage Transient Measurement and Extraction of Power RF MOSFET Thermal Time Constants," 70th Automatic RF Techniques Group Conference, Tempe, Arizona, November 2007.
  • C. Baylis, Improved Techniques for Nonlinear Electrothermal FET Modeling and Measurement Validation, Doctoral Dissertation, University of South Florida, 2007.
  • C. Baylis, S. Lardizabal, and L. Dunleavy, "A Fast Sequential Load-Pull Algorithm Implemented to Find Maximum Power," IEEE Wireless and Microwave Technology Conference (WAMICON 2006), Clearwater, Florida, December 2006.
  • C. Baylis, L. Dunleavy, and W. Clausen, "Design of Bias Tees for Pulsed-Bias S-Parameter Measurements Using Accurate Component Models," Microwave Journal, October 2006.
  • S. Akamatsu, C. Baylis, and L. Dunleavy, "Accurate Simulation Models Yield High Efficiency Power Amplifier Design," IEEE Microwave Magazine, December 2005.
  • C. Baylis, L. Dunleavy, and W. Clausen, "The Importance of a Slow Sweep Rate in Static DC-IV Measurements," Microwave Journal, March 2005.
  • C. Baylis, L. Dunleavy, and J. Martens, "Constructing and Benchmarking a Pulsed S-Parameter System," 66th Automatic RF Techniques Group Conference, December 2005, Washington, D.C.
  • R. Varanasi, C. Baylis, L. Dunleavy, and W. Clausen, "Prediction of Harmonic Tuning Performance in pHEMTs," 2005 IEEE Wireless and Microwave Technology Conference, Clearwater, Florida, April 2005.
  • C. Baylis, L. Dunleavy, and A. Snider, "The Normalized Difference Unit as a Metric for Comparing IV Curves," 64th Automatic RF Techniques Group Conference, Orlando, Florida, December 2004.
  • C. Baylis, L. Dunleavy, P. Ladbrooke, and J. Bridge, "The Influence of Pulse Separation and Instrument Input Impedance on Pulsed IV Measurement Results," 63rd Automatic RF Techniques Group Conference, Fort Worth, Texas, June 2004.
  • C. Baylis, L. Dunleavy, and J. Daniel, "Direct Measurement of Thermal Circuit Parameters Using Pulsed IV and the Normalized Difference Unit," IEEE Microwave Theory and Techniques Society International Microwave Symposium, Fort Worth, Texas, June 2004. (Refereed Conference)
  • C. Baylis, Improved Current-Voltage Methods for RF Transistor Characterization, Master's Thesis, April 2004, University of South Florida, Tampa, Florida
  • C. Baylis, L. Dunleavy, and J. Daniel, "Thermal Correction of IV Curves for Nonlinear Transistor Modeling," IEEE 2004 Wireless and Microwave Technology Conference, Clearwater, Florida, April 2004.
  • C. Baylis and L. Dunleavy, "Understanding Pulsed IV Measurement Waveforms," Eleventh IEEE International Symposium on Electron Devices for Microwave and Optoelectronic Applications (EDMO 2003).

Papers in Progress

  • C. Baylis, J. Martin, M. Moldovan, and R.J. Marks II, "Going Nonlinear: Unlocking the Capabilities of Nonlinear Network Analysis for Large-Signal Design," Invited Article, IEEE Microwave Magazine, April 2011.

Conference Presentations

  • C. Baylis, H. Miller, L. Wang, and M. Moldovan (invited presentation), "Spectrum Issues in Power Amplifier Design," 2009 Tri-Service Radar Symposium, Boulder, Colorado, June 2009.
  • C. Baylis, L. Dunleavy, and S. Lardizabal, "A Peak-Search Algorithm for Faster Transistor Load-Pull Characterization," 2007 Raytheon Symposium, Tucson, Arizona, June 2007.
  • L. Dunleavy and C. Baylis (Invited Workshop Presentation), "Meeting the Challenges in High-Power Device Modeling," in IEEE MTT-S International Microwave Symposium Workshop: "Challenges of High Power Device Characterization and Modeling," Honolulu, Hawaii, June 2007.
  • C. Baylis, L. Dunleavy, and S. Lardizabal, "Efficient Load-Pull Measurement Using a Sequential Search Algorithm," IEEE Topical Symposium on Power Amplifiers for Wireless Communications, Long Beach, California, January 2007.

Seminars and Guest Lectures

  • C. Baylis, "High-Efficiency, Linear, Power Amplifier Design and Related Characterization Techniques," Texas Analog Center for Excellence (TxACE) Seminar, University of Texas at Dallas, Richardson, Texas, May 2010.
  • C. Baylis, "X-Parameters: A New Paradigm for Nonlinear Design?", Baylor Engineering and Research Seminar (B.E.A.R.S.), Baylor University, Waco, Texas, February 2010.
  • C. Baylis, L. Dunleavy, S. Lardizabal, H. Miller, J. Perry, R. Marks II, "A Peak-Search Algorithm for More Efficient Load-Pull Measurements," IEEE Microwave Theory and Techniques Society, Dallas Chapter Meeting, Dallas, Texas, June 2009.
  • C. Baylis, "Research in Wireless and Microwave Active Circuits at Baylor University," CASPER Seminar, Baylor University, May 2009.
  • C. Baylis, "An Overview of Transistor Modeling for RF and Microwave Applications," Baylor Engineering and Research Seminar (B.E.A.R.S.), March 2009.
  • C. Baylis, "Improving the RF Active Circuit Design Cycle Through Innovations in Electrothermal Modeling, Characterization, and Design Techniques," Baylor Engineering and Research Seminar (B.E.A.R.S.), Baylor University, April 2008.
  • C. Baylis, "PDFs and MGFs for Sums of Random Variables," Guest Lecture in Probability and Random Processes Course, Cedarville University, Cedarville, Ohio, March 2008.
  • C. Baylis, "RF/Microwave Transistor Modeling Research at the University of South Florida," Wireless Seminar, University of South Florida, Tampa, Florida, February 2008.
  • C. Baylis, "Development of New Time-Dependent Modeling and Characterization Techniques for Thermal and Trapping Effects in GaN FETs and HEMTs," Army Research Laboratory, Adelphi, Maryland, January 2008.
  • C. Baylis, "Active Circuit Research at the USF WAMI Center," Freescale Semiconductor, Tempe, Arizona, November 2007.
  • C. Baylis, "Improved Microwave Transistor Modeling Techniques Using Pulsed Measurements," Wireless Seminar, University of South Florida, Tampa, Florida, January 2007.

Conference Organization and Synergistic Activities

  • Journal Reviewer, IEEE Transactions on Microwave Theory and Techniques, 2009.
  • Technical Program Committee Member, Session Co-Chair, and Paper Awards Competition Coordinator, 2010 IEEE Wireless and Microwave Technology Conference, April 2010, Melbourne, Florida.
  • Chair, First and Second Mini-Symposia on Wireless and Microwave Circuits and Systems, Waco, Texas, April 2009 and March 2010.
  • Executive Committee Member and Student Activities Chair, IEEE Microwave Theory and Techniques Society, Dallas Chapter, 2009-2010.
  • Evaluator, IEEE Microwave Theory and Techniques Society Undergraduate Scholarship Competition, 2009-2010.
  • Steering Committee Member and Website Chair, 2009 IEEE Wireless and Microwave Technology Conference, April 2009, Clearwater, Florida
  • Session Co-Chair: Special Session on Transistor Modeling, 2009 IEEE Wireless and Microwave Technology Conference, April 2009, Clearwater, Florida.
  • Local Arrangements Chair, 2008 IEEE Power Amplifier Symposium, January 2008, Orlando, Florida.
  • Steering Committee Member, 2014 IEEE International Microwave Symposium, June 2014, Tampa, Florida.