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