| 1959 B. S., Microwave Electronics, Kyoto University |
| 1961 M.S., Microwave Electronics, Kyoto University |
| 1971 D.S., Upper Atmospheric Physics, Kyoto University |
| 1961 Radio Research Laboratory of Ministry of Posts and Telecommunications (currently) Communications Research Laboratory) |
| 1989-1993 Director General of Communications Research Laboratory |
| 1993-present Professor of Research Institute of Science and Technology of Tokai University
Professor of Tokai University |
| 1993-1995 Visiting Senior Research Scientist of Texas A&M University and Visiting Senior Researcher of GSFC/NASA |
| 1994-1996 Visiting Professor of University of Maryland |
| 1995-1996 Visiting Professor of University of Tokyo |
| 1997-2001 President of Support Center for Advanced Telecommunication Technology Research Foundation (SCAT) |
| 2001 Vice President of Advanced Telecommunications Research Institute International (ATR) |
| 2001-pressent President of Advanced Telecommunications Research Institute International (ATR) |
