Hidetsugu Yagi
From Wikipedia, the free encyclopedia
Hidetsugu Yagi | |
|---|---|
| 八木 秀次 | |
 | |
| Born | January 28, 1886 |
| Died | January 19, 1976 (aged 89) |
| Alma mater | Tokyo Imperial University |
| Occupation | Engineering scientist |
| Known for | Yagi–Uda antenna |
| Awards | Blue Ribbon Award (1951), the Order of Culture (1956) and the Order of the Rising Sun, First Class (1976) |
| Scientific career | |
| Fields | Electrical engineering |
Hidetsugu Yagi (八木 秀次, Yagi Hidetsugu; January 28, 1886 – January 19, 1976) was a Japanese electrical engineer from Osaka, Japan. When working at Tohoku Imperial University, he wrote several articles that introduced a new antenna designed by his assistant Shintaro Uda to the English-speaking world.
The Yagi-Uda antenna, patented in 1926, allows directional transmission using radio waves, and is especially useful in the very high frequency and ultra high frequency radio bands . Antennas of this type were widely used for television and radio reception, and are still common in communication and radar systems. [citation needed] Yagi also tried, unsuccessfully, to introduce a wireless power transmission system.[citation needed] He participated in establishing the Chiba Institute of Technology.[1][citation needed] He was the fourth president of Osaka University from February 1946 to December 1946.[2]
In 1942, he became the President of Tokyo Institute of Technology, in 1944 he became the President of the Technical Institution, and in 1946 also the President of the Osaka Imperial University. He was decorated with the Medal of Honor with Blue Ribbon Award in 1951, with the Order of Culture in 1956, and posthumously with the Grand Cordon of the Order of the Rising Sun in 1976.[citation needed]
Hidetsugu Yagi was born on January 28, 1886, in Osaka Prefecture. He graduated from the Department of Electronic Engineering of the Tokyo Imperial University, Faculty of Sciences, in 1909. From 1913 he studied in Germany where he worked with Heinrich Barkhausen on generating CW oscillations by electric arcs; England where he worked with J.A. Fleming who invented the vacuum diode; and the United States where he worked with G. W. Pierce at Harvard who invented the Pierce oscillator which generated a continuous wave. He earned his doctorate from Tokyo Imperial University in 1921.[3] In Germany he continued research on generation of electric waves used for wireless communication. He returned to Japan in 1930.[citation needed] After 1930, Hidetsugu Yagi was involved, as a adviser, in the operation of the Number Nine Research Laboratory run by Iwakuro Hideo.[4]
