WiFi Antenna build (2.4GHz Yagi)

Designing and building a Yagi antenna for 2.4GHz WiFi. It is a highly directional antenna that allows you to connect to your WiFi router from much farther away than normal. Overall, this 2.4 GHz Yagi antenna it is a compact build that works well!

For the design of the antenna:
The driven element has a total length of one half wavelength (12.49cm / 2).
The first reflector is 0.125 times the wavelength away from the driven element and each successive director has a gap of 1.1 times the previous gap.
The reflector is 0.2 wavelengths behind the driven element.
Each reflector is 5% shorter than the previous one.

As for gain, it is somewhere between 7 and 9 dB. Different programs have produced different results. My physical build outperformed the antenna that came with the WiFi adapter, and that antenna was rated for 5dB, so the antenna definitely has a gain of more than 5dB.

Why this design? There certainly are others, and there definitely are more effective ones. Most WiFi antennas have very consistent element lengths. This is what I use because of the simulations that I have run in NEC programs and what I have researched about Yagi designs. Feel free to change this design or use it for yourself.

I hope you enjoy the video! Like and subscribe for more!

[tanmay______]

This is great effort but there are some major flaws in your build of the antenna. Mitigating these issues will vastly improve the performance.
1. The Coax cable is too long, this will negate any benefit you receive from the gain improvement of the yagi.
2. You seem to have used multiple adapters to convert to SMA at the USB adapter- each adapter adds to the total RF loss
Also why are you measuring the performance using latency? Your latency is a function of your internet connection, which can vary independent of your antenna and signal strength. You should redo this step with dBm measurements instead.
All in all this was a really good effort and I enjoyed watching the video. I’ll stay tuned for hopefully more.

[oscarlper]

The impedance of this dipole is 75ohms and you need 50ohms.

[ovalwingnut]

That was fun.. it was like I was your neighbor and I could watch but I had to keep my trap shut - it worked for me. Cheers!

[irishguy]

So I need a 3d printer and a lathe to make this at home??

[johnclement]

It looks like you pointed the directional antenna away from your house. (driven element is next to reflector witch looks like its at the house end)

[johniccia]

you certianly deverse the subscribers.

[MohsinExperiments]

Looks promising. I should try that. But measurements are very difficult for me. Can you share your antenna measurements?

[donnypodcast]

Cool video, man. Thanks for making it

[yinglyca]

if you turn the antenna so the elements are vertical it makes a big diffrence

[AndrewMurphy]

since when dont sdr recive the 2.4 ghz band? @Electric Technic

[xx]

Hi, i broke the wire off a single plug on ipad Wifi connector. Question- looking at the wire, it seems to have inner wire and a bit of outer braid. Does this mean the inner wire connects to the very thin pin and the outer connects onto outer round clip that buttons onto socket on board?
so theres 2 connections outer and inner ? do i need that outer connection or only the inner pin to make the antenna work or is the braid grounding and it wont work right without? thanks

[fjs]

The reflector, driven element and directors do not appear right if this is for 2.4ghz.

[SaenzFonsi]

are you providing the printer model to the public? and thank you for sharing? and if so where?

[zazugee]

Funny thing i had same idea to use that same wire bc it's available, but i measured it's thickness to be 2.5mm

[donnypodcast]

What is the signal wire and what is the ground wire? I don't know much about coax, but I do want to try this project and see how it compares to a cantenna that I've built.

[dimasramadhan]

Awesome....can you make another video about the results

[chetnapatel]

Sir i needed to make yagi antenna which can receive rf signal up to 6 gigahertz Is it possible?

[miscellaneousmarauders]

They sell black hot glue... it's cheap.. nice build by the way!

[moviekurdofficial]

Fa... i made it today and not work am so tired wy not working for my router TP-LINK 😣💔💔💔

[reedreamer]

A lot of women talk with that vocal fry at the end of the sentence these days - where does that come from?