It is apparent that Yagi did not aim to steal the publicity at all and as a result the design now bears the names of both men and is formally known as the Yagi-Uda antenna. As a result the design is often incorrectly only attributed to Yagi. Accordingly it was Hidetsugu Yagi who wrote papers in English. Uda did not speak English, but his student did. However all the original papers were all in Japanese and accordingly the design was not publicised outside Japan. The design for the Yagi antenna appears to have been initially developed not by Yagi who was a student, but his Professor Shintaro Uda. Since then its use has grown rapidly to the stage where today a television antenna is synonymous with an RF antenna having a central boom with lots of elements attached. The RF antenna design concept was first outlined in a paper that Yagi presented in 1928. The name is derived from its two Japanese inventors Hidetsugu Yagi and Shintaro Uda.
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Typical Yagi Uda antenna used for television reception Yagi antenna developmentĪlthough the Yagi antenna is now widely used, it was only in the late 1920s and early 1930s when it started to be used.Īlthough the name, Yagi is normally used, its full name is the Yagi-Uda antenna. Similarly levels of general interference can be reduced to other users because the signal is not transmitted to areas where it is not needed. For transmitting much better use of the available power is made because it is possible to focus the transmitted power on areas where it is needed. The gain and directivity of the Yagi antenna enable improved reception by enabling better levels of signal to noise ratio to be achieved, and by reducing interference levels by only picking up signals from a given direction. The Yagi antenna or Yagi-Uda antenna or aerial is a particularly popular form of antenna where directivity and gain are required.Īlthough the Yagi has become particularly popular for television reception, it is also used in many other applications, both domestic and commercial or professional. Yagi antenna Yagi antenna theory & calculations Yagi antenna gain & directivity Yagi feed impedance & matching Yagi Antenna / Yagi-Uda Aerial The Yagi antenna or aerial sometimes called the Yagi-Uda antenna is widely used where gain and directivity are required from an RF antenna design.