Antonsen graduated from
Cornell University with a B.S. degree in electrical engineering in 1973, an M.S. in 1976 and a Ph.D. in 1977. He was a National Research Council postdoctoral fellow at the
Naval Research Laboratory in 1976-77 and a research scientist in the Research Laboratory of Electronics at MIT from 1977 to 1980. He joined the faculty of the University of Maryland in 1980 as a research assistant, where his research interests include nonlinear dynamics and chaos and plasma theory. He was appointed professor at Maryland in 1989. == Honors and awards ==