Reference Design For Passive Antenna - Quectel SC606T Series Hardware Design

Table 36: Pin Definition of GNSS Antenna
Pin Name Pin No.
ANT_GNSS 134
GNSS_LNA_EN 202
Table 37: GNSS Frequency
Type
GPS
GLONASS
BeiDou

6.3.1. Reference Design for Passive Antenna

The GNSS antenna interface supports passive ceramic antennas and other types of passive antennas. A
reference circuit design is given below.
NOTE
When the passive antenna is placed far away from the module and the 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.
SC606T_Series_Hardware_Design
I/O
AI
DO
Frequency
1575.42 ±1.023
1597.5–1605.8
1561.098 ±2.046
Figure 37: Reference Design for GNSS Passive Antenna
SC606T Series Hardware Design
Description
GNSS antenna Interface
LNA enable control
Smart Module Series
Comment
50 Ω impedance
For test purpose only.
If unused, keep it open.
Unit
MHz
MHz
MHz
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