- Ministry of Internal Affairs and Communications (5)
- IEICE. Technical Committee on Microwaves (4)
- Microwave Workshops and Exhibition. (4)
- IEICE. APMC Japan National Committee (3)
- 平野, 拓一 (2)
- Asia-Pacific Microwave Conference (1)
- IEEE Microwave Theory and Techniques Society (1)
- IEICE. APMC Japan Organizing Committee (1)
- 電子情報通信学会 (1)