coexistence wifi ble modules certificaten

[TY]

We would like to use Wifi (2.4 GHz) and BLE in the same device.
The current design will have the BLE Module Rigado BMD-340 and the Wifi Module Microchip WINC1500.

https://www.rigado.com/products/modules/bmd-340/
https://www.microchip.com/wwwproducts/en/ATwinc1500

Neither the Softdevice of the Nordic SoC nor the WINC1500 supports any Hardware Collision Prevention.
According to the Rigado and Microchip Support minimum distance to the next 2.4GHz Radio has to be at least 20cm in order not to lose the certifications for the modules.

Has anyone experience in getting such a design certified?

These guys use a nRF52 and an ESP32:
https://www.fanstel.com/bwg840f-industrial-wifi-bluetooth-5-iot-gateway/

Their PCB layout is similar to what we have in mind. Size wise and positing of the two radio modules.
https://static1.squarespace.com/static/561459a2e4b0b39f5cefa12e/t/5c0d5339b8a04586ee39b74a/1520699898282/EV+IoT+Gateway.jpg?format=750w

My gut feeling says the interference with such a design should be not too bad.
However, can you pass the FCC and CE requirements with such a design?

What are your thoughts?

[ketiljo]

It depends on the module certification if it's tested and qualified with another radio or not. If they say 20 cm distance, then you need to have that, else you need to fully qualify the design again. 

The softdevice doesn't have a co-existence mechanism (yet), so this has to be handled by the Wifi chipset. 

[Bob Recny]

There are some considerations that can be done on a case-by-case basis. @TY, please open a ticket with us directly at Rigado.

[zachtos]

Is it possible to pass WIFI and BT in same product short distance, but no software to prevent them from broadcasting at the same time?  Can we just test to make sure total max RF is not problem?  Not doing modular, but full FCC product.

[ketiljo]

You have to test with both transmitters operating at the same time.