Dr. Tadao Nagatsuma joined Nippon Telegraph and Telephone Corporation (NTT) in 1986 after completing his doctoral studies in the Graduate School of Engineering at Kyushu University. He became a principal researcher in 1996, a distinguished researcher in 1999, a group leader in 2002, and a professor in 2007 in the Department of Systems Innovation in the Graduate School of Engineering Science at Osaka University.

At NTT Laboratories, he worked for many years on research and development of ultra-high frequency signal measurement systems in the millimeter wave and terahertz wave ranges and succeeded in developing an undisturbed ultra-high-speed electrical signal measurement system using an electro-optic sampling method. In the field of wireless communication systems, he has also played a pioneering role in terahertz wireless research by developing terahertz wireless systems that use optical technology to generate and detect terahertz signals, achieving the world's highest transmission speed in the 120 GHz band. In collaboration with broadcasters, he also developed an uncompressed high-definition signal multiplex wireless transmission system, which was used for live broadcasts for the Beijing Olympics. In the field of nondestructive measurement, he worked on developing high-resolution nondestructive imaging technology that takes advantage of the transparency of radio waves. In particular, the technology for nondestructively detecting microcracks in utility poles under anti-glue sheets using millimeter wave imaging was introduced to NTT East as a technology for inspecting utility poles.

After moving to Osaka University, he worked on developing ultrahigh-speed wireless communication technology using terahertz waves over 300 GHz to realize a breakthrough in the high-frequency domain. He has pioneered new terahertz wave application systems using resonant tunneling diodes and dielectric platforms, continuing to lead the field of terahertz wireless communications by delivering a series of research results for the world's fastest wireless transmissions. In the field of imaging applications, he has made many achievements, including the world's first success in terahertz-band optical coherence tomography, and the development of a terahertz-band scanner that enables ultra-fast imaging image acquisition and a millimeter-wave radar mounted on a drone. In addition, he served as Director of the Science, Technology, and Entrepreneurship Laboratory of the Headquarters for Academia-Industry Collaboration at Osaka University from 2013 to 2017, and as Director of the Co-Creation Human Resource Development Division of the Headquarters for Academia-Industry Co-Creation at the same university from 2017 to 2019, dedicating himself to managing educational organizations to foster entrepreneurs and develop human resources for innovation through academia-industry co-creation.

With regard to academic activities, he served as Chair of the Technical Committee at IEICE, Director of Public Relations and International Affairs, and Vice President of IEICE, contributing significantly to its management and revitalization. He also served as program chair of many international conferences and an associate editor of academic journals, contributing to international academic activities.

For these research achievements, he has received more than 30 awards, including the IEICE Achievement Award, the IEICE Distinguished Achievement and Contributions Award, the Director General of Science and Technology Agency Award, the Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, the Okochi Memorial Technology Award, Maejima Award, IEEE Andrew R. Chi Best Paper Award, and the Tatsuo Itoh Award. The IEICE, IEEE, and EMA have also awarded him the title of Fellow. Furthermore, he has served in many important positions, including as an expert researcher at the Research Center for Science Systems of the Japan Society for the Promotion of Science, chairman of the NEDO Research Evaluation Committee, and chairman of the Terahertz System Application Promotion Council, making significant contributions to the development of Japanese science and technology. 　

As mentioned above, his achievements in the fields of electronics, information, and communication are highly remarkable. We are convinced he is worthy of being the IEICE's Honorary Member and recommend him for this honor.