The Yagi antenna is named after Japanese engineer Hidetsugu Yagi. Sources vary, but Mr. Yagi either (a) co-invented the antenna with engineer Shintaro Uda in the 1920’s, or (b) popularized Uda’s antenna design by publishing the first English language accounts and demonstrating the antenna in the U.S.

So a more accurate name for the design may be the Yagi-Uda antenna, but the universal name is Yagi. Yagi antennas are directional, meaning they must be pointed directly at a signal source for peak performance.

Rather than try to explain how a Yagi antenna works, I encourage you to watch the video above featuring Don, the Antenna Engineer, from weBoost. In the video Don explains the difference between directional and omnidirection antennas. He uses a Yagi antenna as his directional example, and explains how it works.

 

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