Three element yagi antenna
The yagi antenna is a directional antenna with multiple elements placed one after another. The Yagi-Uda antenna has one driven element, one reflector one side and one or more directors on the other side.
Formulas
![Schematic](/media/schematics/three-element-yagi-antenna.png)
![](/shared/media/generated/e440280f5c74.png)
![](/shared/media/generated/2a004570e803.png)
![](/shared/media/generated/7269e8224cfb.png)
![](/shared/media/generated/3f6c3c5cf1e5.png)
l is the symbol for length and is measured in meter (m).
f is the frequency in megahertz (MHz).