| 摘要 |
According to one embodiment, a high-frequency amplifier (10, 20) includes an active element (151) and an output matching circuit (109). The active element (151) is provided on a substrate (100). The active element (151) is configured to amplify a signal having a frequency band. The active element (151) includes a cell region (101). The output matching circuit (109) is connected to the active element (151). The output matching circuit (109) includes a wire (105), a transmission line (113) and an output terminal (121). The wire (105) includes an input end and an output end. The input end of the wire (105) is connected to an output part of the cell region (101) of the active element (151). The transmission line (113) is provided on the substrate (100). The transmission line (113) includes an input part and an output part. The input part of the transmission line (113) is connected to the output end of the wire (105). The output terminal (121) is provided on the substrate (100). |
