Radio-frequency differential amplifying circuit and radio-frequency module

A radio-frequency module, wherein the radio-frequency module comprises a radio-frequency differential amplifying circuit, and the radio-frequency differential amplifying circuit comprises an input balun, an output balun, a first differential amplifying circuit, a second differential amplifying circuit, a first linear feedback circuit and a second linear feedback circuit;

• the first differential amplifying circuit is arranged between a first output end of the input balun and a first input end of the output balun;
• the second differential amplifying circuit is arranged between a second output end of the input balun and a second input end of the output balun;
• a first end of the first linear feedback circuit is connected with the input balun, a the second end of the first linear feedback circuit is connected with the first differential amplifying circuit;
• a first end of the second linear feedback circuit is connected with the input balun, and a second end of the second linear feedback circuit is connected with the second differential amplifying circuit;
• the first differential amplifying circuit comprises a first amplifying transistor, a first DC blocking capacitor, a first coupling resistor and a first bias circuit;
• a first end of the first amplifying transistor is connected with the first DC blocking capacitor, a second end of the first amplifying transistor is connected with the first input end of the output balun, and a third end of the first amplifying transistor is connected to a ground end;
• the first DC blocking capacitor is arranged between the first output end of the input balun and the first end of the first amplifying transistor;
• one end of the first coupling resistor is connected with the first bias circuit, the other end thereof is connected with a connection node between the first DC blocking capacitor and the first end of the first amplifying transistor;
• the second end of the first linear feedback circuit is connected with a connection node between the first coupling resistor and the first bias circuits;
• and
• the second differential amplifying circuit comprises a second amplifying transistor, a second DC blocking capacitor, a second coupling resistor and a second bias circuit;
• a first end of the second amplifying transistor is connected with the second DC blocking capacitor, a second end of the second amplifying transistor is connected with the second input end of the output balun, and a third end of the second amplifying transistor is connected to the ground end;
• the second DC blocking capacitor is arranged between the second output end of the input balun and the first end of the second amplifying transistor;
• one end of the second coupling resistor is connected with the second bias circuit, and the other end thereof is connected with a connection node between the second DC blocking capacitor and the first end of the second amplifying transistor;
• the second end of the second linear feedback circuit is connected with a connection node between the second coupling resistor and the second bias circuit.