公开(公告)号：EP4387092A1

公开(公告)日：2024-06-19

申请号：EP23211443.9

申请日：2023-11-22

申请人： Nokia Solutions and Networks Oy

发明人： FERRISS, Mark ,  IOTTI, Lorenzo ,  RYLYAKOV, Alexander

IPC分类号： H03F3/08 ,  H03F3/45 ,  H03F3/50 ,  H03G3/30 ,  H03F1/08 ,  H03G11/04

CPC分类号： H03F3/45475 ,  H03F3/087 ,  H03F3/50 ,  H03F2203/500320130101 ,  H03F2203/501820130101 ,  H03F3/4508 ,  H03G3/3084 ,  H03F1/083 ,  H03F2200/43520130101 ,  H03G11/04

摘要： An apparatus, such as a coherent optical receiver, includes a transimpedance amplifier (TIA) with differential outputs, and a multi-tanh type current limiter (300) connected across the differential outputs of the transimpedance amplifier. The multi-tanh type current limiter includes two tanh-type current limiters (330) shifted in voltage and connected to subtract an output current thereof from an output current of the TIA.