LTE Standard Module Series
EG25-GL_Hardware_Design 67 / 96
GNSS
Antenna
VDD
Module
ANT_GNSS
10R
0R
NM
NM
100 pF
0.1
μ
F
47 nH
Figure 34: 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.
3. It is recommended to use a passive GNSS antenna when LTE B13 is supported, as the use of active
antenna may generate harmonics which will affect the GNSS performance.
5.2.2 GNSS Performance
The following table shows the GNSS performance of the module.
Table 31: GNSS Performance
Parameter
Description
Conditions
Typ.
Unit
Sensitivity
Acquisition
Autonomous
-146
dBm
Reacquisition
Autonomous
-156
dBm
Tracking
Autonomous
-157
dBm
TTFF
Cold start
@ open sky
Autonomous
35
s
XTRA enabled
15
s
Warm start
@ open sky
Autonomous
28
s
XTRA enabled
3
s
NOTE