I hear that the DW1802 is Atheros AR4962, and it is supported with Ath9KFixup.kext or Atheros40.kext plugin info.plist edit.
I have this same card, and I am going to try this with patched IO80211Family.kext later tonight...
I will report my findings here! Not holding out a lot of hope for this Qualcomm AC combo card, but worth a try at least. If it works, I will be so happy (and it will mean I won't have to reinstall a new OS again).
Here is the line from "Supported" list:
Dell DW1802 NGFF/M.2 168c-0034 AR94621 A/B/G/N Y Y ? ? N (=AR5B22)
Y Y is Sierra and High Sierra OOTB... Mojave is ?, but reported working with 10.13.6 kext edit + replacement. It is definitely NOT an AR5B22 tho, and mine is marked Wireless AC as well... it actually is a DW1802 and AR94621 and the Device and Vendor ID are correct too?!?!