Thanks a lot for your reply. I was not aware that this antenna could be directional (https://amzn.eu/d/38mbdAj). But OK, I'll try this. According to you, what would be the best way to extend a WiFi from ESP32 to say 500 meters and beeyond? What type of antenna do I need to use? Does the antenna need...

I am using a ESP32-UE chip connected to a WiFi router with a throughput of 50 MB/s. The node has an external SMA antenna (through a U.fl to SMA cable). I am connecting to the node with a smartphone and measure throughputs of the internet connexion. I am reproducibly measuring a throughput (in MB/s) ...