| 摘要 |
A system for substantially eliminating nonlinear distortion, such as intermodulation products, introduced when a signal is processed by a nonlinear device (106). The system adds an out-of-band signal (111) to an input signal (101) to produce a combined signal (105) having a power that substantially equals a nominal operating point power for a nonlinear device (106). Preferably, the instantaneous power of the out-of-band signal (111) is adjusted by an automatic gain amplifier (120). The combined signal (105) is input to the nonlinear device (106) to produce an output. A filter (108) processes the output of the nonlinear device (106) to recover the information content of the original signal (101) after processing by the nonlinear device (106). For example, if the nonlinear device (106) is a power amplifier, the filtered output (109) is an amplification of the input signal (101).
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