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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.
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.
ANT_WIFI/BT
77
SC206E_Series_Hardware_Design
ANT_MAIN
C1
NM
ANT_DIV
C3
NM
Module
I/O
Description
AIO
Wi-Fi/Bluetooth antenna interface
Main
Antenna
R1 0 Ω
C2
NM
Diversity
Antenna
R2 0 Ω
C4
NM
Smart Module Series
Comment
50 Ω impedance
77 / 115
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