| 摘要 |
According to the present invention, a digital attenuator includes a first switching element connected between an RF input terminal and an RF output terminal, a first resistive element connected in parallel to the RF input terminal, a second resistive element connected in parallel to the RF output terminal and in series to the first resistive element, a third resistive element connected in parallel between the second resistive element and the first resistive element, a first capacitive element connected to a ground and in series to the second switching element, and a fourth resistive element connected to a positive power source and in parallel to the second switching element. |
