Quectel SC206E Series

Smart Module Series
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6.1.2. Reference Design
A reference circuit design for the main and Rx-diversity antenna interfaces is shown below. Reserve a π-
type matching circuit for each antenna to achieve better RF performance, and place the π-type matching
components (R1/C1/C2 and R2/C3/C4) as close to the antennas as possible. The capacitors are not
mounted by default and the resistors are 0 Ω.
ANT_MAIN
R1 0 Ω
C1
Module
NM
C2
NM
Main
Antenna
ANT_DIV
R2 0 Ω
C3
NM
C4
NM
Diversity
Antenna
Figure 29: Reference Circuit Design for Main and Rx-diversity Antenna Interfaces
6.2. Wi-Fi/Bluetooth Antenna Interface
The following tables show the pin definition and frequency specification of the Wi-Fi/Bluetooth antenna
interface.
Table 37: Pin Definition of Wi-Fi/Bluetooth Antenna Interface
Pin Name
Pin No.
I/O
Description
Comment
ANT_WIFI/BT
77
AIO
Wi-Fi/Bluetooth antenna interface
50 Ω impedance