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
Photo: LX7I teamThe 2016 CQ World-Wide DX RTTY Contest September 24-25 Starts 0000 GMT Saturday — Ends 2400 GMT Sunday I. OBJECTIVE: For amateur... Read more
ES-4 COMES AS A CONTROL UNIT AND A BASE (SWITCHING) UNIT THE BASE UNIT RECEIVES 12V POWER AND HAS ALL THE HEAVY COAXIAL CABLES CONNECTED TO IT. THER... Read more
Description Overview It will be 5 elements twin loop antenna of amateur radio 1200Mhz band for mobile. Decomposed and we try to carry. Connector will... Read more
Amanda’s EmComm van and tropospheric ducting! A tour of Amanda’s EmComm van, tropospheric ducting with Gordo, Amateur Radio Newsline with... Read more
Coronavirus in the UK: Meet the child radio enthusiast making friends thousands of miles away during lockdown
By Rhiannon Williams William, 10, has been discovering the joy of chatting with people across the world over radio waves – and he’s far from the only... 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