| 摘要 |
<p>A signal amplification system (50) independently adjusts the relative phase and/or amplitude between the signal components and/or the relative phase and/or amplitude between the distortion components to improve the combination of corresponding components. For example, a signal amplification system has first (52) and second (54) amplifier paths carrying replicas of signal components. On the first amplifier path, a first amplifier (56) amplifies signal components and generates distortion components. A replica of the amplified signal components and distortion is provided to a coupling path (58). On the coupling path, the distortion components are isolated by canceling the signal components, and the distortion components are then amplitude and/or phase adjusted without a corresponding adjustment to the phase and/or amplitude of the signal components. The adjusted distortion components are coupled onto the second path (54) where the signal components and the adjusted distortion components are amplified by a second amplifier (66). The amplified signal components and distortion on the second path are combined with the amplified signal components and distortion on the first path to constructively combine the signal components and destructively combine the distortion components. By independently adjusting the distortion components relative to the signal components, the phase and/or gain adjustments to the distortion and/or signal components can be made which improve the constructive combination of the signal components and/or the destructive combination of the distortion components. <IMAGE></p> |
