For a detailed history, see for example "Yagi-Uda antenna,"
https://www.academia.edu/24711173/Yagi_Uda_antenna
There are many references linked in "Yagi-Uda antenna,"
https://en.wikipedia.org/wiki/Yagi%E2%80%93Uda_antenna
See also https://www.dxzone.com/the-true-story-of-yagi-antenna/
I treasure my physical copy of the book, S. Uda and Y. Mushiake (1954).
"Yagi-Uda Antenna," Sendai, Japan:,
http://www.sm.rim.or.jp/~ymushiak/sub.yubook.htm
From my 1992 book on Yagi design,
https://www.dropbox.com/scl/fi/j7kkt63nyyh2pag0g9avj/Physical-Design-Of-Yagi-Antennas-D-B-Leeson-V2.pdf,
pp. 1-3 and 1-4, linked at https://orcid.org/0000-0001-6570-6002:
"Sec 1.5 Yagi-Uda. In his recently republished classic book on antenna
design [7], John Kraus, W8JK, relates the early history of the Yagi-Uda
antenna. Shintaro Uda, then an assistant professor, published a series
of articles beginning in 1926 describing novel array antennas with
parasitic reflector and directors [8]. Hidetsugu Yagi, professor of
engineering and a recipient of a grant which supported the research done
by Uda with Yagi's collaboration, toured the United States in 1928 to
present talks on the antenna design in New York, Washington and Hartford.
In his 1928 article on the parasitic antenna [9], Yagi noted that Uda
had already published a number of papers on the antenna. Although Yagi
apparently acknowledged that Uda's ingenuity was key to its development,
the antenna has, since that time, been called a "Yagi." Although it
seems impossible to reverse the practice of more than half a century, it
is appropriate to note the role of Uda in the development of the antenna
that is the subject of this book."
I always cautioned my students to be sure to publish before their
professor does, but also to be aware that prior publishing precludes
patenting.
Dave, W6NL/HC8L
On 4/1/26 5:37 AM, john simmons wrote:
Thanks for your comment, Brian!
Isn't it a shame that Uda, the fellow that did all the work, never gets
his name mentioned when we talk about that type of antenna. <sigh>
-John
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