Beginning in 1924, Professor Hidetsugu Yagi and his assistant, Shintaro Uda, designed and constructed a sensitive and highly-directional antenna using closely-coupled parasitic elements. The antenna, which is effective in the higher-frequency ranges, has been important for radar, television, and amateur radio. The antenna system, using a driven element with closely coupled parasitics (usually a reflector and one or more directors) for short-wave work, was first described by S. Uda, a professor at Tohuku University in Japan, in 1926, in the IEEJ (Japan). A colleague, Professor H.
Society: IEEEMain Category: ElectricEra: 1920-1929DateCreated: 1924Tohoku University Sendai-shiCountry: JapanWebsite: http://www.ieeeghn.org/wiki/index.php/Milestones:Directive_Short_Wave_Antenna,_1924Creator: Hidetsugu Yagi, Uda, Shintaro
YearAdded:Image Credit: Courtesy IEEEEra_date_from: 1924