A package (1) includes first and second input terminals (2,3) which are adjacent to each other, and first and second output terminals (4,5) which are adjacent to each other. A first input matching circuit (6), a first delay circuit (7), a second input matching circuit (8), a first amplifier (9), and a first output matching circuit (10) are sequentially connected between the first input terminal (2) and the first output terminal (4) inside the package (1). A third input matching circuit (11), a second amplifier (12), a second output matching circuit (13), a second delay circuit (14), and a third output matching circuit (15) are sequentially connected between the second input terminal (3) and the second output terminal (5) inside the package (1). First to fourth matching circuits (16-19) are respectively connected to the first input terminal (2), the second input terminal (3), the first output terminal (4) and the second output terminal (5) outside the package (1).