Quectel SG560D Series - Reference Design of Cellular Antenna Interfaces; Gnss; Antenna Interface & Frequency Bands

Smart Module Series
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5.1.4. Reference Design of Cellular Antenna Interfaces
The module provides four RF antenna interfaces for antenna connection.
It is recommended to reserve a π-type matching circuit for better RF performance, and the π-type
matching components (a capacitor-resistor-capacitor group) should be placed as close to the antenna as
possible. The capacitors are not mounted by default.
ANT_0
R1 0 R
C1
Module
Main
antenna
NM
C2
NM
R2 0 R
C3
Diversity
antenna
NM
C4
NM
ANT_3
   
Figure 26: Reference Circuit for RF Antenna Interfaces
5.2. GNSS
The module integrates the IZat™ GNSS engine (Gen 9) which supports multiple positioning and
navigation systems including GPS, GLONASS, BDS, Galileo, NavIC, QZSS, SBAS. With an embedded
LNA, the module provides greatly improved positioning accuracy.
5.2.1. Antenna Interface & Frequency Bands
The following table shows the pin definition, frequency, and performance of GNSS antenna interface.
5G NR TDD n78 (100 MHz)
-87.2
-87.7
-93.5
-85.6