| 摘要 |
A feedforward amplifier circuit (30) compensates for distortion introduced into an amplified input carrier signal (34) by amplifying and feedforwarding a distortion signal component from one or more of the amplifiers (32a-32n) in an amplifier array (32) used to amplify the input carrier signal (34). Specifically, a main power amplifier (31) includes a plurality of combined power amplifiers (32a-32n) for amplifying the input carrier signal (34) to create an amplified carrier signal with a carrier signal component and a distortion signal component. The amplified carrier signal (34) is amplified on a main output path. A feedforward error path coupled to an output of at least one of the plurality of combined power amplifiers (32a-32n) receives a coupled amplified carrier signal output from the at least one of the plurality of combined power amplifiers (32a-32n), cancels a corresponding carrier signal component from the coupled amplified carrier signal, and feedforwards the remaining distortion signal component of the coupled amplified carrier signal to the main output path to cancel the distortion signal component from the amplified carrier signal.
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