LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
57 /89
The module provides one RF antenna interface for antenna connection.
It is recommended to reserve a π-type matching circuit for better RF performance, and the π-type
matching components (R1, C1 and C2) should be placed as close to the antenna as possible. The
capacitors are not mounted by default.
Figure 23: Reference Circuit for Main Antenna Interface
5.2. GNSS Network
The module includes a fully integrated global navigation satellite system solution that supports GPS,
GLONASS.
The module supports standard
NMEA-0183
protocol, and outputs NMEA sentences via debug UART
interface (data update rate: 1–10 Hz, 1 Hz by default).
By default, the module’s GNSS function is switched off. It must be switched on via AT command. For
more details about GNSS function’s technology and configurations, see
document [4]
.
5.2.1. Antenna Interface & Frequency Bands
The following table shows the pin definition, frequency bands, and performance of GNSS antenna
interface.
Table 36: Pin Definition of GNSS Antenna Interface
Pin Name
Pin No.
I/O
Description
Comment
