Telecommunications engineer. He graduated from the Engineering College of the Imperial University of Tokyo in 1909. He went to study in Germany and England in 1913. He became professor of Tohoku Imperial University in 1919 and studied the short-wavelength beam. He developed the Yagi-Uda antenna together with Shintaro Uda in 1926 and received international acclaim. The antenna is widely used for radar and television reception. He successively served as professor at Osaka Imperial University in 1932, the president of Tokyo Institute of Technology in 1942, the president of the Institute of Science and Technology in 1944, and the president of the Imperial University of Osaka in 1946. Although he was temporarily purged from office, he became a member of the House of Councillor s in 1953. He was awarded the Order of Culture in 1956. Eng. d..