User's Manual

MeiG hardware design guide
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If there are fewer components between the antenna and the module output, or if the RF test head is not
needed in the design, the antenna matching circuit can be simplified as shown below:
Figure 4.36: DRX Antenna Interface Simplified Connection Circuit
In the above figure, R102 defaults to 0R, C103 and C104 are not attached by default.
4.18.3 GPS Antenna
The module provides the GNSS antenna pin RF_GPS. The antenna on the user's main board should be
connected to the antenna pin of the module using a 50-ohm characteristic microstrip line or strip line.
The LNA is integrated inside the module.
To improve GNSS reception performance, customers can use external active antennas. The
recommended circuit connections are as follows:
Figure 4.37: Connecting Active Antennas
To improve GNSS reception performance, customers can use external active antennas. The
recommended circuit connections are as follows: