| 摘要 |
Amplifier apparatus comprising a power amplifier having an operating frequency in the radio frequency or microwave or higher ranges and a pre-distorter, the characteristics of the power amplifier comprising a distortion from a linear transfer function. The pre-distorter comprises a non-linear path and a linear path including amplifiers having substantially identical physical characteristics, an input divider responsive to an amplifier input signal for applying respective pre-distorter input signals to the paths, and an output coupler for combining the signals from the linear path and the non-linear path to produce a pre-distorted signal. The characteristics of the pre-distorter comprise a distortion relative to a linear transfer function that compensates for the distortion of the transfer function of the power amplifier.
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