u.FL IPEX Antenna

[Randy222]

I need to find a PCB style 2.4GHz wifi antenna that radiates out perpendicular to the board, and, ideally already has a 12" length of coax on it with u.FL.IPEX (MHF4) connector on the end. I need to dbl-side tape the antenna to the side or top of a audio receiver unit that is in a tight location. I see many on amzon and the like, but most antenna stuff from there usually has bad VSWR.

Anyone ever use an antenna like this, something with decent VSWR <1.5? If so which one?

[ppx]

Are you referring to a PCB-type 2.4 GHz antenna? If so, you can directly fabricate a PCB using this antenna design and then solder a coaxial cable to the arrow-indicated part.

[ftg]

If you don't want to fabricate the antennas and want documented performance, why not buy them from Digikey or Mouser instead of amazon?

[squadchannel]

https://www.digikey.com/en/products/filter/rf-antennas/875?s=N4IgjCBcoKwBwE4qgMZQGYEMA2BnApgDQgD2UA2iHAMzUAM9IxN1YA7BM7ewEwgC6xAA4AXKCADKIgE4BLAHYBzEAF9iAWj7QQaSDICuRUhRAwBakOqTbdBo2UiUI-Fa6A

[WangRF]

Hey Randy,

I run a small RF connector shop in Dongguan - we do a lot of these antenna + pigtail assemblies. You're right about the Amazon ones, most are generic designs never tuned for a real enclosure, so VSWR is basically a lottery.

<1.5 is doable but honestly it depends more on your mounting than the antenna itself. Same antenna taped to metal vs plastic can measure totally different. If you get them custom made, have the supplier tune it with your actual box nearby - makes a huge difference.

For tight spots I'd go FPC over rigid PCB - you can fold it to fit and it comes with adhesive already. 12" of 1.13mm coax with u.FL on the end is pretty standard stuff.

We make these at our shop if you end up needing a small batch. Either way good luck!

-Wang

[Randy222]

Hi Wang,
A flat antenna that I can attach to the receiver case (externally).
FPC is ok for my needs, I have some small ones from some seed esp32 kits I have, but, I am looking for the experience recommendation, something that may have some vswr data, etc.

Considering most are low cost items I may just buy some, do my vna testing, go from there.
TY.

[WangRF]

Happy to help. Send me your detailed specs - frequency, cable length, connector type, size limits, quantity - and I'll check with our tech team. If we have something that fits, I'll send you the VNA curves.

You can reach me at [email protected], or WhatsApp +86 18218288545.