| 摘要 |
An amplifier (64) comprises an amplifying field-effect transistor (70) having its source connected to ground via an adjustable degeneration resistance (80). A capacitor (76) is connected in parallel to the variable degeneration resistance (80). The degeneration resistance, comprising a field effect transistor, provides adjustable current feedback to the amplifying transistor (70) to stabilise the drain current of the amplifying transistor (70) at a desired value. |
