Shintaro Uda: The Inventor Behind the Yagi-Uda Antenna

Shintaro Uda, a Japanese inventor, collaborated with Professor Hidetsugu Yagi to develop the groundbreaking Yagi-Uda antenna in 1926. This antenna design, which uses a series of elements to direct radio waves, revolutionized communication technology and remains widely used today.

Japanese inventor

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Yagi–Uda antenna design for communication at a wavelength of λ.

Shintaro Uda (宇田新太郎, Uda Shintarō, June 1, 1896 – August 18, 1976) was a Japanese inventor, and assistant to Professor Hidetsugu Yagi at Tohoku Imperial University, where together 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 ("Variable Directional Electric Wave Generating Device") was issued in May 1932 and assigned to the Radio Corporation of America.