wlaniot 2.4G Wireless Mini PCI PCI-E WiFi Bluetooth Internal Antenna Built-in Antenna (5dbi,700-2600Mhz,U.FL/IPX Connector,RG178 Cable 4inches) 2pcs

Put these on a ESP32-C6, and I get about 12-14db increased signal. Works well. Kind of large, be prepared to 3D print a bigger case. The attached shows it in a temp/humidity sensor case, the antenna (copper side down) is in the top part separated from the esp32 to keep the temperature more stable. It's a big antenna, but it works really well.

This works great on Bluetooth, probably WIFI. I couldn't get far enough on my property to get it to fail. Perfect for stereo retro-upgrade.

Funky little antenna, each one I've tested so far has a different frequency it's tuned for, and the SWR is not optimal every time. Also the material they're made from is extremely thin which I'm sure is a good idea for some things. As it makes it somewhat flexible and easy to use in lightweight, however you must be extremely careful when soldering to them. As the copper Trace will lift from the board. Also the exact position of the coaxial connections. Will determine whether this is an omnidirectional or semi-directional antenna. If the connection is changed from exactly where it is in the center to one end of the other end, it will make the intended directional. Also with the antenna cable going down the side of the antenna it creates an impedance mismatch. These have potential to be good but they do need some RF redesign.

Used with my XIAO SEEED STUDIO esp32-c6 and it worked flawlessly.

Editing my initial review, which was 1 star because they arrived broken in half, both of them.Well, I have the replacements, and they work great. Great range. But they are large, and the wire is stiff, so fitting them in a case might be a challenge. Pic is one of them on my HelTec Visionmaster 190.

Someone on the Hubitat Community forum recommended this as a replacement antenna for the apparently weak one that comes with the Hampton Bay Fan Controller, a Zigbee module that sits in the canopy of your ceiling fan and provides the ability to control it via Wink, SmartThings, Hubitat, or another supported Zigbee Home Automation platform. Before I tried this, I was plagued with the device occasionally falling off my Zigbee network and requiring is painstaking reset/re-pair procedure. Keeping a repeater as close to the fan as I could helped with this most of the time, but replacing the antenna with this allowed me to move that repeater to a different room (where I really wanted it) and still get better signal strength than I did originally. This antenna is quite cheap (and it's a two pack!) and replacement is pretty easy (the canopy module unscrews to open and the antenna snaps on and off). When painted white (the underside is plastic so I don't need to feel weird about painting the metal), it's slightly larger than but much thinner than the original antenna and blends in just as well with my white ceiling.I'm sure most people are using this for another purpose, but in any case, I've found it to work well, and I'm sure it would work equally well for anyone else using it for any reason.

Works well. Solved my range problems on an ESP-32 / Bluetooth project I was building.

I have a Prusa Buddy3d camera and the PCB antenna ripped off of it. This worked great as a replacement and gets even better signal than the original one.