26
/
50
1.
Keep a proper distance between the main antenna and the Rx-diversity antenna to improve the
receiving sensitivity.
2.
ANT_DIV
function is enabled by default.
AT+QCFG="diversity",0
command can be used to disable
receive diversity.
3.
Place the
π-type
matching components (R1/C1/C2 and R2/C3/C4) as close to the antenna as
possible.
3.8.3.
GNSS Antenna Interface
The following tables show pin definition and frequency specification of GNSS antenna interface.
Table 14: Pin Definition of GNSS Antenna Interface
LTE B5
824~849
869~894
MHz
LTE B7
2500~2570
2620~2690
MHz
LTE B8
880~915
925~960
MHz
LTE B20
832~862
791~821
MHz
LTE B28
703~748
758~803
MHz
LTE B32
1)
-
1452~1496
MHz
LTE B38
2570~2620
2570~2620
MHz
LTE B40
2300~2400
2300~2400
MHz
LTE B41
2545~2655
2545~2655
MHz
Pin Name
Pin No.
I/O
Description
Comment
ANT_GNSS
119
AI
GNSS antenna pad
50Ω impedance
NOTES