GSM Module with ESP32

[ManuSisko]

Hello.

I need to include GSM/GPS or even 3G connectivity to my project using ESP32. I intent to use a GSM module like the Quectel M66 or MC60. Now I face this issue: Can both the ESP32 and the M66 share the same Antenna? I could alternate the usage of the antenna via a GPIO pin. My end-user circuit PCB should have both ICs in opposite sides of the same PCB. Would VIas affect the PCB Antenna? Should I use an external antenna?

I've never designed an Antenna myself so I'm quite clueless.

Also, is there a better option than MC66 for using GSM with ESP32? I'm looking specially for miniaturization.

Any help will be greatly apprecieted

[WiFive]

https://www.cnx-software.com/2019/07/04 ... prs-board/