Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese inventor. Assistant of professor Hidetsugu Yagi

Hidetsugu Yagi

Hidetsugu Yagi was a Japanese electrical engineer. When working at Tohoku University, he wrote several important articles that introduced a new antenna design by his colleague Shintaro Uda to the English-speaking world.The Yagi antenna, patented in 1926, allows directional communication using...

 at Tohoku University

Tohoku University

, abbreviated to , located in the city of Sendai, Miyagi Prefecture in the Tōhoku Region, Japan, is a Japanese national university. It is the third oldest Imperial University in Japan and is a member of the National Seven Universities...

, where they invented the Yagi-Uda antenna in 1926. In February 1926, Yagi and Uda published their first report on the wave projector antenna in a Japanese publication. Yagi applied for patents on the new antenna both in Japan and the United States. His U.S. patent 1,860,123 was issued in May 1932 and assigned to the Radio Corporation of America.

Sources

1. http://ieee.cincinnati.fuse.net/reiman/05_2004.htm

2. http://www.astrosurf.com/luxorion/qsl-ham-history8.htm, see chapter "Yagi-Uda's invention".