Primer for Yagi Antenna design

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hlewhlew 07/18/2017 at 06:190 Comments

It has been a long time since I took electro-magnetics courses in university. It is time to take

a primer on Yagi antenna design. Yagi antenna are very directional but it gives you a better

signal to noise ratio and allows you to send and receive longer distances than other antenna

designs because the directionality focuses all the power in a narrow cone. As with all

antenna it is more effective if there are no obstructions between the sending

and receiving antenna. Rain and other airborne particles can also cause scattering

lessening the effective distance. Unobstructed line of sight is the rule of thumb if

you do not want to do the calculations.

Here is a good reference on how to construct Yagi antenna for a few dollars of materials.

It just requires that you measure accurately.