UAV project tracking record 76 - wireless transceiver module circuit

The schematic diagram of wireless transceiver circuit is as follows ：

One of the chips NRFL01 It is a wireless transceiver module , The meaning of discipline is as follows ：

among X1 For crystal oscillator , Provide... For chips 16M Crystal oscillator signal . Chip 11 Discipline is to provide... For antenna transceiver circuit 1.8 Volt power supply .12 And 13 The pins are the two interface pins of the antenna , The external circuit is LC Heteromorphic π Frequency selective network . When receiving a signal , Through ceramic antenna ANT1 after , The signal passes through the frequency selection network , Will be fixed 2.4GHZ Frequency signal reception , Other frequency signals are filtered out .12 And 13 The pin is connected to the operational amplifier inside the chip . So when sending , The signal passes through the operational amplifier and then through the frequency selection network , Put the signal with the strongest energy 2.4G Send the signal out .

On the right side C89、C33、C32 Wait for a pile of capacitors to filter .