Conform with the RED fail

[_Mihec_]

Hi,
after trying to conform our product including ESP32-WROOM-32 with the RADIO EQUIPMENT DIRECTIVE (RED) we fail RF tests because of spurious emission radiated in ~3.3GHz range (see attached chart). There is some kind of frequency sweep which is correlate to WiFi channels. After examination we found that unwanted emissions disturbs ESP32-WROOM-32 module when WiFi is active (if only BLE part is active there is no unwanted emissions). Emissions are more present in the area of module RF shield.

Is there any known solution or maybe any hint for solve the problem?

Many thanks,
Miha

[ESP_Sprite]

FWIW, you may also want to try mailing sales@espressif.com; there are people there that have experience with regulatory compliance.