Academic Research and Teaching Appointments
| Stanford University Materials Science Lab (RA) | 1965-1966 | |
| Stanford University Radio Science Lab (RA) | Summer 1969 | |
| University of Massachusetts Communications Lab (RA/TA) | 1969-1972 | |
| University of California, Davis (Assistant Professor) | 1972-1976 | |
| University of Washington Applied Physics Lab (Visiting Scholar) | 1975-1976 | |
| University of California, Davis (Associate Professor) | 1976-1982 | |
| University of California, Davis (Professor) | 1982-2001 | |
| University of California, Davis (Professor Emeritus) | 2001-present |