Hidetsugu Yagi

Yagi Hidetsugu (Japanese八 木 秀 次, born 28 January 1886 in the prefecture of Osaka, † January 19, 1976 in Tokyo ) was a Japanese physicist. In 1924 he developed with Shintaro Uda Yagi Uda antenna (usually referred to only as a Yagi antenna ).

Biography

In 1909, Yagi gained a degree in Electrical Engineering from the Imperial University of Tokyo.

To continue his studies, he traveled from 1913 to Great Britain, the United States and Germany, where for the purpose of communication, he deepened his research in the field of electromagnetic waves by radio. So he learned with others at the TH Dresden under Heinrich Barkhausen.

In 1916 he returned to his homeland in 1919, where he received a professorship at the Faculty of Engineering of Tohoku Imperial University. There he quickly established his research in the field of electromagnetic waves and made a number of publications.

In 1926, he patented the first time a directional VHF antenna together with its employees Shintaro Uda, who first publicly proposed this in the same year, which is why the Yagi antenna is particularly referred to in Japan as the Yagi -Uda antenna. In February 1926 he published the article with Uda Projector of the Sharpest Beam of Electric Waves in the Proceedings of the Imperial Academy of Japan. The capabilities of this invention was initially underestimated in Japan, and so the antenna was used primarily in Europe and the U.S. distribution, where it was produced industrially after the release of Yagi's work in 1928. It was not until World War II Japan recognized the potential of the " Yagi antenna" when it was learned that this was used by other warring parties as a radar antenna, including also to determine the explosion height of the Hiroshima bomb. Today the " yagi antenna " is primarily known as a television antenna and disseminated. However, they are also found in other areas of uses, especially for the high-frequency frequency VHF and UHF bands.

1935 appointed one Yagi Dean of the Faculty of Industrial Sciences in Tokyo. Seven years later, in 1942, he was Director General of the Technical Institute and 1944 President of the Imperial University of Osaka. He was encouraging young physicist a concern, including Hideki Yukawa in 1949 which became the first Japanese won the Nobel Prize in physics. He was involved in the 1947 founding of the Fabian Society and the Japanese came in 1953, the Socialist Party of Japan.

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