Radio frequency microwave circuit based on single-pole three-throw switch and working method thereof

The embodiment of the invention provides a radio frequency microwave circuit based on a single-pole three-throw switch and a working method of the radio frequency microwave circuit. The circuit is applied to the field of integrated circuits and comprises a COM1 end, a COM2 end, a transmitting branch, a direct connection branch, a receiving branch and a second inductor, wherein the transmitting branch, the direct connection branch and the receiving branch are controlled by a single-pole three-throw switch, and the second inductor is located between the direct connection branch and the receiving branch. Wherein the transmitting branch comprises a transmitting branch input end, a first amplifier and a transmitting branch output end; the receiving branch comprises a receiving branch input end, a second amplifier and a receiving branch output end; the straight-through branch comprises a first inductor. In this way, the circuit can be simplified, the signal quality is improved, and the requirements of a transceivin