ESP32 DevKitC V4 IoT development board ships with ESP32-WROOM-DA dual antenna module - CNX Software
pcb - How to use a 2.4 GHz chip antenna for ESP32 design - Electrical Engineering Stack Exchange
How to add an external antenna to an ESP board - ESPHome - Home Assistant Community
ESP32 Range Extender / Antenna Modification | Peter's electric trick and electronic blog
ESP32 PCB Antenna Test results! : r/esp32
ESP32 Hardware Design Guidelines
ESP32-S2 Solo Wi-Fi Module (PCB Antenna) - DFRobot | Mouser
The Many Ways You Can Easily Ruin Your PCB Antenna Design | Hackaday
Feature Request] Change the orientation of the ESP32 module/antenna so WiFi signal will interfere less with Zigbee · Issue #2 · fairecasoimeme/ZiGate-Ethernet · GitHub