Featured grants
- Chen, Yihong (Principal), Percent Contribution: %40, Droopad, Ravindranath (Co-Principal), Percent Contribution: %15, Stern, Harold P, Percent Contribution: %9, Stephan, Karl, Percent Contribution: %9, Tate, Jitendra S, Percent Contribution: %9, Geerts, Wilhelmus J, Percent Contribution: %9, Shi, Xijun, Percent Contribution: %9. Acquisition of Wide Frequency Band Characterization System for Electronic Devices, Antennas, and Intelligent Materials, DOD, Federal, $548700. (Submitted: August 16, 2021, Funded: August 1, 2022 - June 30, 2024). Grant.
- Chen, Yihong (Principal), Stephan, Karl (Supporting). Conformal, Peel-and-Stick Ferrite Waveguide Embedded in Road Striping, USDOT SBIR Phase II through Nanohmics, Federal, $125000. (Submitted: June 14, 2020, Funded: September 23, 2020 - September 22, 2022). Grant.
- Stephan, Karl D (Principal). Investigation of Novel Propagation Modes in Plasma-Enclosed Waveguide, Julian Schwinger Foundation, Private / Foundation / Corporate, $50000. (Submitted: April 1, 2016, Funded: December 11, 2017 - December 11, 2019). Grant.
- Stephan, Karl. Research Enhancement Grant, Development and Test of a Steam Plasma Jet for Biodecontamination, $8000. (Submitted: October 2013, Funded: 2014). Grant.
- Stephan, Karl. Research Enhancement Grant, Production and Analysis of Hydrogen Spectra in Water-Bearing Plasmoids, $8000. (Funded: 2012). Grant.

Featured scholarly/creative works
- Bhalla, N., Bucklin, C. J., Devlin, M. B., Lopez, O. S., & Stephan, K. (n.d.). Engineering Fit: Developing a Tool to Identify Skills-Job Mismatch Among Engineering Students. https://doi.org/doi:10.25334/ZQY1-W289
- Shmatov, M. L., & Stephan, K. D. (2019). Advances in Ball Lightning Research. Journal of Atmospheric and Solar-Terrestrial Physics, 195, 105115. https://doi.org/https://doi.org/10.1016/j.jastp.2019.105115
- Stephan, K., Sonnenfeld, R., DeGroot, A., Cortez, N., & Toledo-Gonzalez, R. (2024). First measurements of Wind-Turbine Perturbations of Fair-Weather Electric Fields. Journal of Atmospheric and Solar-Terrestrial Physics, 261. https://doi.org/https://doi.org/10.1016/j.jastp.2024.106298
- Stephan, K. (2024). Window damage as evidence for energy and power content of ball lightning. Journal of Atmospheric and Solar-Terrestrial Physics, 261. https://doi.org/https://doi.org/10.1016/j.jastp.2024.106300
- Stephan, K. (2023). An economical smoke chamber and light-sheet microscope system for experiments in fluid dynamics and electrostatics. American Journal of Physics, 91(4), 316–323. https://doi.org/https://doi.org/10.1119/5.0122766.
Featured service activities
- Member
College of Science and Engineering Research Enhancement Program Committee
- Other
College Research Enhancement Grant Committee
- Chair
Ingram School of Engineering Personnel Committee
- Other
Ingram School of Engineering
- Member
Board of Directors of the National Institute for Engineering Ethics
Historian of IEEE Antennas and Propagation Society
