Hi,
i would like to create my own hardware design with XIAO MG24. Are there any recommendations for the wifi antenna?
I’d used ESP8266 before and with GND Layer under onboard antenna the wifi was not working at all.
Do i need external antenna with own design?
thanks a lot
The XIAO MG24 typically includes an onboard PCB antenna. If you use this, follow strict guidelines for the layout. Keep a clear, unbroken ground plane away from the antenna. Do not place a ground plane or any traces directly beneath the antenna. This can detune the antenna and severely impact performance, as you experienced with the ESP8266. If your design cannot accommodate the PCB antenna properly, you can opt for an external antenna using the U.FL or IPEX connector if the XIAO MG24 provides such an option. You don’t always need an external antenna, but it is a safer option if the onboard PCB antenna cannot be used optimally due to design constraints.
Since you are working on customized boards with XIAO modules, you can take a look at this design: XIAO Carrier PCB - Share Project - PCBWay