| 1992. | 3. |
Hebei Semiconductor Research Institute, Assistant Engineer |
|
| 1995. | 4. |
Hebei Semiconductor Research Institute, Engineer |
|
| 1995. | 12. |
Hebei Semiconductor Research Institute, Department of GaAs Very High Speed Integrated Circuits, Vice-Director |
|
| 1998. | 4. |
Hebei Semiconductor Research Institute, Senior Engineer |
|
| 2001. | 2. |
Satellite Venture Business Laboratory, The University of Tokushima, Researcher |
|
| 2003. | 12. |
Department of Electrical and Electronic Engineering, Faculty of Engineering, The University of Tokushima, Assistant Professor |
|
| 2006. | 4. |
Institute of Technology & Science, Graduate School, The University of Tokushima, Assistant Professor |
|
| 2007. | 1. |
Institute of Technology & Science, Graduate School, The University of Tokushima, Associate Professor |
|
