LTE Module Series
EG95 Hardware Design
EG95_Hardware_Design 54 / 81
5.2.
GNSS Antenna Interface
The GNSS antenna interface is only supported on EG95-NA.The following tables show pin definition and
frequency specification of GNSS antenna interface.
Table 23: Pin Definition of GNSS Antenna Interface
Pin Name
Pin No.
I/O
Description
Comment
ANT_GNSS
(EG95-NA)
49
AI
GNSS antenna
50Ω impedance
Table 24: GNSS Frequency
Type
Frequency
Unit
GPS/Galileo/QZSS
1575.42±1.023
MHz
GLONASS
1597.5~1605.8
MHz
BeiDou
1561.098±2.046
MHz
A reference design of GNSS antenna is shown as below.
GNSS
Antenna
VDD
Module
ANT_GNSS
47nH
10R
0.1uF
0R
NM
NM
100pF
Figure 35: Reference Circuit of GNSS Antenna
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.
NOTES