5: Carrier Board
Snapdragon 845 HDK Hardware Development Kit User Guide
34
On Board PCB GNSS Antenna
Figure 5-13 GNSS On Board PCB GNSS Antennas
The HDK845 carrier board has one on-board PCB antennas on the bottom side that connects to the
Processor board via coaxial cable that attaches to MH4L receptacles. The on-board antenna is
connected to the Processor board by default, meanwhile, there are 0-ohm jumpers for user to use an
external GNSS antenna via the SMA connector. The option pads are between the antenna and the
eLNA input.
Table 5-11 GNSS Antenna Option
Option
R3804
R3805
On-Board
DNI
Stuff
SMA connector
Stuff
DNI
GNSS SMA Connector J3802
The GNSS SMA connector is reserved for an external antenna. Refer to Table 5-11 GNSS Antenna
Option, stuff R3804 and remove R3805 to make the path active.
Figure 5-14 GNSS SMA Connector
