Yagi antenna - Wikipedia, the free encyclopedia

Yagi antenna - Wikipedia, the free encyclopedia

The Yagi was first widely used during World War II for airborne radar sets, because of its simplicity and directionality. The Japanese military authorities first became aware of this technology after the Battle of Singapore when they captured the notes of a British radar technician that mentioned "yagi antenna". Japanese intelligence officers did not even recognise that Yagi was a Japanese name in this context. When "questioned" the technician said it was an antenna named after a Japanese professor. (This story is analogous to the story of American intelligence officers interrogating German rocket scientists and finding out that Robert Goddard was the real pioneer of rocket technology even though he was not well known in the US at that time.)