Here is a a modest size horn design. I made one for the
1.3 to 2.4 GHz band from some
flashing ally sheet and the feed strip was the shield
cover from a dead laptop charger, copper
so I could solder it to the N socket and two screws at the
end onto the waveguide broad face.
We have a Microwave Simulation expert checking this design
and possibly telling us exactly
what to adjust to get a good Return Loss at both 1.3 and
2.4 GHz. On 1296 MHz it worked
first time. I'm skeptical of my test gear (PocketVNA) at
2.4 G so I left well alone.
As mentioned in the article, it's scale-able to higher
When we have simulation results, we'll add in the "Files"
Perhaps a "yagi" section could be put in front of this but
I'd just extend the horn in mesh.
A mesh size of one tenth of the wavelength is plenty good
enough. one inch for 23cm, half inch
would work for 9cm.
Nothing is critical here, best angle, every unit of length
forward, half up and half down in the vertical and the