Low-power consumption wireless receiver radio frequency front end circuit

The invention relates to a low power consumption RF front-end circuit of the wireless receiver, belonging to the technical field of the integrated circuit of the RF wireless receiver, , comprising an RF input matching network, an amplifier stage, a bridge transformer, an LO switch stage, an IF load and a current source bias circuit; wherein, the RF input matching network implements the impedance matching between an antenna and the amplifier stage; the amplifier stage is used for amplifying the signal, the bridge transformer transfers the signal amplified to the LO switch stage and implements DC isolation between the front stage and back stage; the LO switch stage is used for implementing frequency mixing of the RF current signal and the LO signal and outputting alternatively the IF signalon an outputting differential load. Compared with the traditional RF front-end circuit, the circuit structure can use an on-chip integrated transformer or an on-chip inductor to implement inputting matching, and use the on-chip integrated transformer to implement the amplifying and downward frequency mixing of the RF signals perfectly, which simplifies the circuit structure. The circuit can be used in a low power supply voltage environment, and has the advantages of low DC power consumption, and less circuit noise and signal distortion.