Recommended Circuit For Passive Antenna; Recommended Circuit For Active Antenna - Quectel SC200L-EM Hardware Design

GPS
GLONASS
BeiDou
NOTE
SC200L-WFnot support GNSS。

6.3.1 Recommended Circuit for Passive Antenna

GNSS antenna interface supports passive ceramic antennas and other types of passive antennas. A
reference circuit design is given below.
Figure 29: Reference Circuit Design for GNSS Passive Antenna
NOTE
When the passive antenna is placed far away from the module (that is, the antenna trace is long), it is
recommended to add an external LNA circuit for better GNSS receiving performance, and the LNA
should be placed close to the antenna.

6.3.2 Recommended Circuit for Active Antenna

The active antenna is powered by a 56nH inductor through the antenna's signal path. The common
power supply voltage ranges from 3.3V to 5.0V. Although featuring low power consumption, the
active antenna still requires stable and clean power supplies. It is recommended to use
high-performance LDO as the power supply. A reference design of the GNSS active antenna is
shown below.
SC200L_Hardware_Design
1575.42 ±1.023
1597.5~1605.8
1561.098 ±2.046
SC200L Hardware Design
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MHz
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