Gnss Performance - Quectel RM510Q-GL Hardware Design

NOTES
1. Keep the characteristic impedance for the trace of GNSS antenna
π-type
2. Place the matching components as close to the antenna as possible.
3. Keep the digital circuits, such as that of (U)SIM card, USB interface, camera module, display
connector and SD card, away from the antenna traces.
4. Keep 75 dB isolation between each two antenna traces.
5. Keep 15 dB isolation between each two antennas to improve the receiving sensitivity. and 20 dB
isolation between 5G NR UL MIMO

5.3.3. GNSS Performance

The following table shows GNSS performance of RM510Q-GL.
Table 41: GNSS Performance
Parameter Description
Cold start
Sensitivity
Reacquisition
(GNSS)
Tracking
Cold start
@ open sky
TTFF Warm start
(GNSS) @ open sky
Hot start
@ open sky
Accuracy
CEP-50
(GNSS)
NOTES
RM510Q-GL_Hardware_Design
TRX0 and TRX1 antennas.
Conditions
Autonomous
Autonomous
Autonomous
Autonomous
XTRA enabled
Autonomous
XTRA enabled
Autonomous
XTRA enabled
Autonomous
@ open sky
5G Module Series
RM510Q-GL Hardware Design
to 50 Ω.
(ANT3_GNSSL1)
Typ.
-148
-159
-159
33.99
13.56
22.55
2.02
1.33
1.47
1.8
Unit
dBm
dBm
dBm
s
s
s
s
s
s
m
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