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Table 25: GNSS Frequency
Type
GPS/Galileo/QZSS
GLONASS
BeiDou
The reference design of GNSS antenna is shown as below.
NOTES
1.
You can choose an external LDO to supply power according to the active antenna.
2.
If you design the module with passive antenna, the VDD circuit is not needed.
5.3. Antenna Installation
5.3.1. Antenna Requirement
The following table shows the requirements on main antenna, Rx-diversity antenna and GNSS antenna.
Table 26: Antenna Requirements
Type
EC25-V_User_Manual
69
Frequency
1575.42 ± 1.023
1597.5 ~ 1605.8
1561.098 ± 2.046
VDD
GNSS
Antenna
10R
47nH
NM
Figure 28: Reference Circuit of GNSS Antenna
Requirements
Confidential / Released
0.1uF
Module
100pF
ANT_GNSS
NM
LTE Module Series
EC25-V User Manual
Unit
MHz
MHz
MHz
49 /
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