What are the proper Yagi-Uda dimensions?

[jumpingbean]

The yagi-uda adapter from Thingiverse is one of the most important pieces you can get for your Mavic Mini. It works really well, but I've asked myself - does the design max out its potential?

As somebody has already mentioned, different diameters work better for the 2.4 GHz design than the ones described originally. , Another person on Thingiverse posts that the directors on the 5.8 GHz design shouldn't be much shorter than the reflector. Currently, they are at 14.5 mm and 24.5 mm, which is quite a difference.

I've checked with some calculators and indeed, they suggest the reflector length of 24,5 mm and directors of 23 mm.

Does anybody have the idea why so much difference? Maybe somebody has put the antenna together with those lengths and can post their results?

 

[jpit]

Just received my 5.8 ghz Yagi antenna from Slovenia and it definitely increased range and aids in video transmission. Better than the foiled reflectors. I live in a rural area with little interference so can't comment on urban improvement.

 

[jumpingbean]

Just received my 5.8 ghz Yagi antenna from Slovenia and it definitely increased range and aids in video transmission. Better than the foiled reflectors. I live in a rural area with little interference so can't comment on urban improvement.

I’ve crafted one myself according to the same design and now I won’t fly without them. I’ve found them being about 30% more effective than the reflectors in an urban setting.

What bothers me is the fact, that the 14.5 mm director lengths don’t correspond with data coming yagi calculators. That might be an opportunity to push the mini a tad further.

 

[Hydrostan]

Just received my 5.8 ghz Yagi antenna from Slovenia and it definitely increased range and aids in video transmission. Better than the foiled reflectors. I live in a rural area with little interference so can't comment on urban improvement.

can you tell me the spacing between elements?

 

[jpit]

Spacing between the elements appears to be 7 mm. From mid-element to mid-element 9.5 mm.

 

[jpit]

Spacing is closer to 8mm. Elements are 15mm long.

 

[Bloodied_Mini]

The guy who designed the antenna answered in this thread:

Hand-made Yagi Uda adapter antenna

Wouldn't this set-up be correct? Yes Indeed. I'm questioning the first post on this thread with the 3 photos. That is the one that appears to mount onto the controller with the elements horizontal.

mavicpilots.com

I believe he commented somewhere that for 2.4 GHz version, it might be more suitable to use 2.5 mm antennas instead of 3 mm

 

[Airbag888]

I still can't find a diagram with exact distance between the elements in the 2.4GHz version

 

[cemugurcekic]

If someone could make a diagram that shows the dimensions of the rods and the distance between them for both 2.4-5.8 GHz everyone will be so much happier


I found a Japanese channel he shows the distance between the rods for 2.4 GHz