LPWA Module Series
BG770A-GL Hardware Design
BG770A-GL_Hardware_Design 51 / 75
1. Tracking sensitivity: the minimum GNSS signal power at which the module can maintain lock (keep
positioning for at least 3 minutes continuously).
2. Reacquisition sensitivity: the minimum GNSS signal power required for the module to maintain lock
within 3 minutes after loss of lock.
3. Cold start sensitivity: the minimum GNSS signal power at which the module can fix position
successfully within 3 minutes after executing cold start command.
4.3. Layout Guidelines
The following layout guidelines should be taken into account in application designs.
Maximize the distance between GNSS antenna and main antenna.
Digital circuits such as (U)SIM card, USB interface, camera module, display connector and SD card
should be kept away from antennas.
Use ground vias around the GNSS trace and sensitive analog signal traces to provide coplanar
isolation and protection.
Keep 50 Ω characteristic impedance for ANT_GNSS trace.
Refer to
Chapter 5
for GNSS antenna reference design and antenna installation information.
Hot start
@ open sky
Autonomous
TBD
s
XTRA enabled
TBD
s
Accuracy
(GNSS)
CEP-50
Autonomous
@ open sky
1.41
m
NOTES
