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Snapdragon 820 SBC Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.7.2
GPS/GNSS
The Snapdragon 820 SBC supports GPS/GNSS through Qualcomm WGR7640 chipset. The WGR7640 IC is a dedicated
GNSS RF receiver for GPS, GLONASS and COMPASS operations and fabricated using an advanced RF CMOS process
that accommodates high-frequency, high-precision analog circuits and low-power CMOS functions. The GNSS
receiver supports input frequency 1574.42 MHz to 1576.42 MHz for GPS and 1598 MHz to 1606 MHz for GLONASS.
RF antenna need to be connected for better GPS locking function. MHF-4 Micro R Coax connector (J12) is used for
interfacing the GPS antenna as shown in below figure. Also connector details mentioned below.
Receptacle: 20449-001E from IPEX
Example Mating Antenna Cable: FXP830.24.0100B from Taoglas
Figure 6: GPS Antenna Connector
