Antenna Switching Circuit, Antenna Switching Method and Electronic Device

摘要

An antenna switching circuit comprises a detection device, a controller, a first antenna, a second antenna, a first switch and a radio frequency transceiver. The detection device is used to detect a change in an input impedance of the first antenna and a change in an input impedance of the second antenna; the controller is used to compare the change in the input impedance of the first antenna with the change in the input impedance of the second antenna; the first switch is used to turn on a first radio frequency circuit and turn off a second radio frequency circuit when the change in the input impedance of the first antenna is less than the change in the input impedance of the second antenna.