FRONT-END CIRCUIT, RECEIVER, ELECTRONIC DEVICE, AND COMMUNICATION SYSTEM

The present application provides a front-end circuit, a receiver, an electronic device, and a communication system. The front-end circuit comprises a receiving electrode, a common gate circuit, an amplifying circuit, and a first output end, wherein the common gate circuit comprises a first transistor, a second transistor, and a power supply voltage end; a control electrode of the first transistor is connected to the receiving electrode, a first electrode of the first transistor is connected to an input end of the amplifying circuit, a second electrode of the first transistor is connected to a first electrode of the second transistor, and a second electrode of the second transistor is connected to the power supply voltage end; the first transistor is configured as a source follower amplifier; an output end of the amplifying circuit is connected to the first output end. The present application can reduce the capacitance value of an input capacitor of the front-end circuit, thereby improving the sensitivity of t