5.8Ghz PCB antennas made with KiCAD?

[raspdroid]

Hello,

Do you know pcb antennas for 5.8 Ghz made with KiCAD?

Best regards

[paulvdh]

Stuff like that is not designed in a PCB program, but in an (electromagnetic) Field solver.
https://duckduckgo.com/html?q=field+solver

https://www.youtube.com/results?search_query=field+solver

Some of these programs are very expensive, while others are Open Source & Free, such as OpenEMS. (Which is mentioned in both searches above).

openEMS - An Introduction and Overview Using an EM field solver to design antennas and PCBs:
https://www.youtube.com/watch?v=ThMLf0d5gaE

OpenEMS seems to be tought of as a decent program, and you’ll probaby find a bunch of antenna examples on their website, or on github.

I have not used software like this myself, and do not know how good it is. I assume there is still a lot of trial and error with guidance from the software to get it right.

[raspdroid]

Thank you ,

I just installed it, works openEMS and AppCSXCAD

I’ll study it to see how it works.

You have a good day.

[maui]

Which chip are you using?
Usually chip’s manufacturer have their own antenna designs… and typically have also some download like antenna DXF files and tips to be followed when designing with their chips…

[raspdroid]

I’m using a AVTX that I desinged with KiCAD5 for FPV systems. I’m using Triple Feed Patch and Triple Feed Array in diversity mode with the fpv google but it’s not 100% omnidirectional for me.

The manufacturer of chip in Taiwan offers support for some years but it does not have antenna designs for this application.

[maui]

Also you may find this video from kicon useful
“Microwave Design with KiCad” - Darrell Harmon (KiCon 2019)

"Microwave Design with KiCad" - Darrell Harmon (KiCon 2019)

[paulvdh]

I did not want to suggest to design your own antenna in my previous post.
Learning such programs can take quite some time.
The idea was more to give a diretion in which to search for already existing designs.

[RRPollack]

A few years ago I designed and built a set of modules that operated in the 2.45 GHz ISM band. Knowing that I know almost nothing about RF design I followed the transceiver chip manufacturer’s reference design layout exactly, except that I replaced the PCB “F” antenna with a chip antenna from Johanson Technologies. The first couple I assembled didn’t work, so I consulted with a friend who is an Extra-class amateur radio operator with extensive RF experience. Going over my parts list he identified several passive components in the RF matching network that he considered to have insufficient specs for operation in that frequency band, even though their specs appeared to me to greatly exceed the requirements. Replacing those components with different parts of the same values made these boards work. I can’t imagine attempting to design a PCB antenna in the 5 GHz range without a thorough understanding of EM theory and laboratory test tools suitable for proving the design.

It’s my personal opinion that this is one of those areas where if you’re asking a basic question about how to go about it, you probably don’t have the background to understand the answers. That’s not to say that you’re not capable of learning to do it, but expect to do a lot of research followed by several prototype/test/redesign cycles.