Quectel 5G Module Series Hardware Design

5G Module Series
RM500Q-AE&RM502Q-AE Hardware Design
RM500Q-AE&RM502Q-AE_Hardware_Design 62 / 86
5.2.2. GNSS Frequency
Table 35: GNSS Frequency
1. Keep the characteristic impedance for the trace of GNSS antenna (ANT3_GNSSL1) to 50 Ω.
2. Place the π-type 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 antenna traces.
5. Keep 15 dB isolation between each antenna to improve the receiving sensitivity. and 20 dB isolation
between 5G NR UL MIMO TRX0 and TRX1 antennas.
5.2.3. GNSS Performance
The following table shows GNSS performance of the module.
Table 36: GNSS Performance
Type
Frequency
Unit
GPS/Galileo/QZSS
1575.42 ±1.023 (L1)
MHz
Galileo
1575.42 ±2.046 (E1)
MHz
QZSS
1575.42 (L1)
MHz
GLONASS
1597.5–1605.8
MHz
BeiDou/COMPASS
1561.098 ±2.046
MHz
Parameter
Description
Conditions
Typ.
Unit
Sensitivity
(GNSS)
Cold start
Autonomous
-148
dBm
Reacquisition
Autonomous
-159
dBm
Tracking
Autonomous
-159
dBm
TTFF
(GNSS)
Cold start
@ open sky
Autonomous
33.99
s
XTRA enabled
13.56
s
NOTES

Quectel 5G Module Series Specifications

General

Brand	Quectel
Model	5G Module Series
Category	Motherboard
Language	English