| 摘要 |
A power distributed amplifier that provides a high power output and a wide bandwidth. The amplifier includes an input and output load termination resistors opposite respective input and output ends of a transmission line. A plurality of amplifying devices are distributed along and electrically connected to the input and output transmission lines. An active feedback loop is connected between the output load termination resistor and the input load termination resistor. The feedback loop includes a regulator connected across the output load resistor and a low pass filter connected between the regulator and the input load termination resistor. The regulator senses voltage across the output load termination resistor and provides a regulated signal to the amplifying devices to control their output currents. The regulator and the line filter combine to provide a reduction in DC bias current sensitivity, RF gain and output power sensitivity over wide process variations.
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