It can be conductive or non-conductive, its conductivity just affects the length of the other antenna parts. This is the part of the antenna to which all the other elements are fastened. If you’re new to antenna building, there will be a lot of new terminology! Here’s a diagram: Its ease of construction and the cheapness of materials combined with the amount of gain provided makes it an attractive option for DIY projects and prototypes. If you’ve ever seen a spindly antenna on top of someone’s house, it’s probably a Yagi-Uda! Lucky day! I get to make a Yagi-Uda antenna!Ī Yagi-Uda antenna is a very easy to make high-gain highly-directional antenna. it’s not WiFi) so it’s unlikely that I have one lying around (I didn’t) or that I would be able to buy one on the Internet (I couldn’t). 428 MHz is a pretty specific and non-standard wavelength for a directional antenna (i.e. I needed it to be highly directional because I only care about the 428 MHz signal coming from my signal source and not any other random 428 MHz signals that happen to be where I’m pointing my antenna. I needed it to be high gain because I’m not going to be directly next to the signal source and probably won’t have uninterrupted line of sight, and a high gain antenna allows me to be some combination of “far away” and “there are a lot of walls between me and the signal”. In antenna terms, I needed an antenna that gave me “high gain” (made the signal stronger) and was “highly directional” (only received signals from where I pointed my antenna). IntroductionĪs part of an upcoming project, I needed a quick and easy way to amplify the reception of a 428 MHz signal coming from a specific location.
The Yagi-Uda Antenna: An Illustrated PrimerĪugust 26th, 2019 (Last Updated: August 26th, 2019) 00.
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