Main And Rx-Diversity Antenna Interfaces Reference Design; Wi-Fi/Bluetooth Antenna Interface - Quectel SC20 Series Hardware Design

6.1.2. Main and Rx-diversity Antenna Interfaces Reference Design

A reference circuit design for 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, R2/C3/C4) as close to the antennas as possible. The capacitors are not
mounted by default and the resistors are 0 Ω.
Figure 31: 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 41: Pin Definition of Wi-Fi/Bluetooth Antenna Interface
Pin Name Pin No.
ANT_WIFI/BT 77
Table 42: Wi-Fi/Bluetooth Frequency
Type
802.11a/b/g/n
SC20_Series_Hardware_Design
I/O Description
AIO Wi-Fi/Bluetooth antenna interface
Frequency
2400–2482
Smart Module Series
Comment
50 Ω impedance
Unit
MHz
80 / 133