Smart Module Series
SC20_Series_Hardware_Design 81 / 133
The supported Wi-Fi frequencies of SC20-J/-JL are 2400–2496 MHz and 5180–5825 MHz.
A reference circuit design for Wi-Fi/Bluetooth antenna interface is shown as below. A π-type matching
circuit should be reserved for better RF performance. The
π-type matching components (R1, C1, C2)
should be placed as close to the antenna as possible and are mounted according to the actual debugging.
C1 and C2 are not mounted by default and the resistor is 0 Ω.
Figure 32: Reference Circuit Design for Wi-Fi/Bluetooth Antenna
6.3. GNSS Antenna Interface
The following tables show pin definition and frequency specification of the GNSS antenna interface.
Table 43: Pin Definition of GNSS Antenna Interface
5180–5825
Bluetooth 4.2 LE 2402–2480 MHz
Pin Name Pin No. I/O Description Comment
ANT_GNSS 121 AI GNSS antenna interface 50 Ω impedance
NOTE
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