Kuehl is a professor emeritus of Electrical Engineering/Electrophysics who is an internationally recognized authority on "solitons" — single waves propagating in plasmas and optical fibers. Solitons, which retain their shape after colliding with each other, are beginning to have an important technological impact in the area of fiber optic communication, where light pulses in the form of solitons can be used for broadband information transmission. Earlier in his career, Kuehl formulated the basic theory governing the interaction of antennae and plasmas. He was one of the first theoreticians to predict and describe in detail the phenomenon of plasma resonance cones, which produce significant enhancements of the electromagnetic fields of an antenna in a magnetized plasma.
Other USC Awards that Kuehl has received include the University of Southern California Associates Teaching Excellence Award, the USC Archimedes Circle Faculty Service, and the Eta Kappa Nu Outstanding Electrical Engineering Faculty Award. In addition, Kuehl served as the co-chairman of task force at USC that developed an innovative new electrical engineering curriculum that became effective in 1999