| 摘要 |
<p>A feedforward amplifier is provided. A power combiner (34) produces a combined signal obtained by combining the output signal from a distortion eliminator (2) with distortion and pilot signals supplied from an auxiliary amplifier (13) through an amplitude attenuator (35) and a phase shifter (36). A detector (20) detects the power of the pilot signal in the combined signal. A control circuit (21) controls a variable attenuator (14) and a variable phase shifter (15) to minimize the power of the detected combined pilot signal.</p> |
