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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
Table 42: Wi-Fi/Bluetooth Frequency
Pin Name Pin No. I/O Description Comment
ANT_WIFI/BT 77 AIO Wi-Fi/Bluetooth antenna interface
50 Ω impedance
Type Frequency Unit
802.11a/b/g/n 2400–2482 MHz
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