Quectel EC25-AUX Hardware Design page 77

Table 29: GNSS Frequency
Type
GPS
GLONASS
Galileo
BeiDou
QZSS
A reference design of GNSS antenna is shown as below.
NOTES
1. An external LDO can be selected to supply power according to the active antenna requirement.
2. If the module is designed with a passive antenna, then the VDD circuit is not needed.
EC25_Hardware_Design
Frequency
1575.42±1.023
1597.5~1605.8
1575.42±2.046
1561.098±2.046
1575.42
Figure 38: Reference Circuit of GNSS Antenna
LTE Standard Module Series
EC25 Hardware Design
Unit
MHz
MHz
MHz
MHz
MHz
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