Schematic diagram of radio frequency transceiver circuit based on nRF24L01

nRF24L01 can work in the 2.4 GHz ~ 2.5 GHz ISM frequency band. The transceiver has built-in frequency synthesizer, power amplifier, crystal oscillator, modulator and other functional modules. It is a highly integrated wireless transceiver. The external circuit of nRF24L01 is relatively simple and incorporates enhanced ShockBurst technology, in which the output power and communication channel can be configured through the program. At the same time, the power consumption of this chip is extremely low. When transmitting at a power of -6 dBm, its operating current is only 9 mA; while when receiving, its operating current is only 12.3 mA. The control circuit of nRF24L01 can be connected to the SPI port and GPIO port of the STM32 controller. Figure 1 shows the schematic diagram of the radio frequency transceiver circuit composed of the chip .

Figure 1 RF transceiver circuit schematic diagram