A Yagi-Uda antenna, commonly known simply as a Yagi antenna, is a directional antenna consisting of multiple parallel dipole elements in a line, usually made of metal rods. It consists of a single driven element connected to the transmitter or receiver with a transmission line, and additional parasitic elements: a so-called reflector and one or more directors. The reflector element is slightly longer than the driven dipole, whereas the directors are a little shorter. This design achieves a very substantial increase in the antenna’s directionality and gain compared to a simple dipole.
The antenna was invented in 1926 by Shintaro Uda of Tohoku Imperial University,Japan, with a lesser role played by his colleague Hidetsugu Yagi. However the “Yagi” name has become more familiar with the name of Uda often omitted. This appears to have been due to Yagi filing a patent on the idea in Japan without Uda’s name in it, and later transferring the patent to the Marconi Company in the UK. Yagi antennas were first widely used during World War II in radar systems by the British, US and Germans. After the war they saw extensive development as home television antennas.
See More: KX4O-Yagi-Uda_Presentation
The Board of Directors of an antenna-restricted community in Arizona voted overwhelmingly in April to allow radio amateurs to erect certain outdoor an... Read more
Photos: Tribuhvan University In the pre-dawn hours of April 25, when my phone buzzed “Q Q Q” — the code I had set to notify me when the USGS Earthquak... Read more
Two California radio amateurs — one of them in Hawaii — have set new world distance records on the 2.3 and 3.4 GHz microwave amateur bands. Wayne Over... Read more
ARRL has reintroduced the popular title Experimental Methods in RF Design as a classic reprint edition. Immerse yourself in the communications experie... Read more
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fthe-yagi-uda-antenna%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151