Smart Machine Smart Decision 
SIM7020_Hardware_Design_V1.02    33       2018-07-25 
4.3.2  LTE ANT and other system ANT decoupling 
  Make sure the efficiency of LTE  main ANT more than 40% 
  Keep the decoupling of LTE main ANT to WLAN ANT more than 15dB 
  Keep the decoupling of LTE main ANT to GNSS ANT more than 30dB 
 
Note: The decoupling value can be provided by ANT adventure. More details can refer to the 
document[25].