Patent ID: 11881876
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A radio frequency module, comprising:
a first transmission input terminal;
a second transmission input terminal;
a module board that includes a first principal surface and a second principal surface on opposite sides of the module board;
a first power amplifier configured to amplify a transmission signal in a first frequency band;
a second power amplifier configured to amplify a transmission signal in a second frequency band different from the first frequency band;
a first transmission filter;
a first output transformer that includes a first coil and a second coil;
a second transmission filter;
a second output transformer that includes a third coil and a fourth coil;
a first switch including a first common terminal connected to an output terminal of the first power amplifier, a second common terminal connected to an output terminal of the second power amplifier, a first selection terminal connected to the first transmission filter, and a second selection terminal connected to the second transmission filter; and
a second switch including a third common terminal directly connected to an input terminal of the first power amplifier, a third selection terminal connected to the first transmission input terminal and a fourth selection terminal connected to the second transmission input terminal, wherein
the first power amplifier and the second power amplifier are disposed on the first principal surface,
the first switch is disposed on the second principal surface,
the second switch is disposed on the first principal surface or the second principal surface,
the first output transformer and the second output transformer are disposed inside the module board between the first principal surface and the second principal surface, and
the first output transformer and the second output transformer are closer to one principal surface of the first principal surface and the second principal surface than another principal surface of the first principal surface and the second principal surface.