| 摘要 |
The invention relates to a system and method for transmitting a signal via a non-linear transmission unit, wherein the system aims to reduce distortion in the signal after transmission caused by intermodulation products. For achieving a decrease of intermodulation products in the output signal the system comprises a power splitter 110 for dividing the signal into a main signal and an auxiliary signal. The system further includes a power variation detector 120 for detecting power variations in said auxiliary signal and for generating a control signal representing said power variations. The system further includes a variable attenuator 130 for attenuating the power of said main signal in response to said control signal such that the said power of the main signal being input to said non-linear transmission line 200a is kept constant if the power of the input signal exceeds a predetermined reference power value Pref. After transmission the signal is recovered by amplifying the main signal by a first variable gain amplifier 310 in response to said control signal. |
