A wireless communications system, comprising:
- a first power amplifier;
- a second power amplifier;
- a first switch;
- a second switch;
- a first filter circuit;
- a second filter circuit;
- and
- an antenna group;
- wherein the first power amplifier is configured to perform power amplification on a first sub-radio frequency signal of a first communication standard and output an amplified first sub-radio frequency signal to the first switch;
- wherein the second power amplifier is configured to perform power amplification on a second sub-radio frequency signal of a second communication standard and output an amplified second sub-radio frequency signal to the first switch;
- wherein the first switch is configured to output a first output signal by using the amplified first sub-radio frequency signal, the first output signal is transmitted to the first filter circuit, and the first sub-radio frequency signal is in the first frequency band;
- wherein the first switch is configured to output a second output signal by using the amplified second sub-radio frequency signal, the second output signal is transmitted to the first filter circuit, and the second sub-radio frequency signal is in the second frequency band;
- wherein the first filter circuit is configured to perform filtering at least one of the first output signal or the second output signal, to obtain a first transmission signal;
- wherein the antenna group is configured to transmit the first transmission signal;
- wherein the first power amplifier is configured to perform power amplification on a third sub-radio frequency signal and output an amplified third sub-radio frequency signal to the second switch;
- wherein the second power amplifier is configured to perform power amplification on a fourth sub-radio frequency signal and output an amplified fourth sub-radio frequency signal to the second switch;
- wherein the second switch is configured to output a third output signal by using the amplified third sub-radio frequency signal, the third output signal is transmitted to the second filter circuit, and the third sub-radio frequency signal is in the third frequency band;
- wherein the second switch is configured to output a fourth output signal by using the amplified fourth sub-radio frequency signal, the fourth output signal is transmitted to the second filter circuit, and the fourth sub-radio frequency signal is in the fourth frequency band;
- wherein the second filter circuit is configured to perform filtering at least one of the third output signal or the fourth output signal, to obtain a second transmission signal;
- wherein the antenna group is configured to transmit the second transmission signal;
- wherein the first communication standard is different from the second communication standard;
- and
- wherein the frequency of the first frequency band is different from the frequency of the third frequency band, the frequency of the second frequency band is different from the frequency of the fourth frequency band, and the wireless communications system is configured to support simultaneous transmission of dual-connection signals by using the first sub-radio frequency signal and the second sub-radio frequency signal.