| 摘要 |
A multistage equalizer filter ( 100 ) is presented for compensating a received distorted signal having an amplitude for frequency dependent signal modifications introduced by a transmission channel. The filter ( 100 ) comprises at least one amplifying compensation stage ( 21 a, 21 b, 21 c, 21 d) having a gain and a saturation level, the gain being monotonically rising for at least a last decade in frequency below an upper data frequency of the received signal, and a gain control means ( 125 ) for controlling the gain of the amplifying compensation stage ( 21 a, 21 b, 21 c, 21 d) such that the amplitude of the received signal amplified in the at least one amplifying compensation stage ( 21 a, 21 b, 21 c, 21 d) remains below the saturation level of the amplifying compensation stage ( 21 a, 21 b, 21 c, 21 d). The gain may be regulated by separately regulating low frequency gain, mid-frequency gain and higher frequency gain for each of the at least one amplifying compensation stages ( 21 a, 21 b, 21 c, 21 d).
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