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NOTES
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. Use the AT command
receive diversity.
5.2. GNSS Antenna Interface
The following tables show the GNSS antenna pin definition and frequency specification.
Table 24: Pin Definition of GNSS Antenna
Pin Name
Pin No.
ANT_GNSS
47
EC25-V_User_Manual
69
Module
ANT_MAIN
ANT_DIV
Figure 27: Reference Circuit of Antenna Interface
I/O
Description
AI
GNSS antenna
Confidential / Released
Main
antenna
R1
0R
C2
C1
NM
NM
Diversity
antenna
R2
0R
C4
C3
NM
NM
AT+QCFG="diversity",0
LTE Module Series
EC25-V User Manual
can disable
Comment
50ohm impedance
48 /
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