A monolithic microwave integrated circuit included a substrate, a first pad, a first line, a second line, a second pad, a third pad, a first active element, a second active element. The first line includes an input end connected to the first pad. The second line includes an input end connected to the first pad. The second and third pads are connected to the ground. The first active element includes a first gate electrode connected to the output end of the first line. The second active element includes a second gate electrode connected to the output end of the second line. The first pad is provided between the second pad and a third pad. Electrical length of the first line is equal to electrical length of the second line.
