利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.009 秒)

    VERFAHREN ZUR LINEARISIERUNG EINES HOCHFREQUENZ-VERSTÄRKERS
    1.
    发明公开
    VERFAHREN ZUR LINEARISIERUNG EINES HOCHFREQUENZ-VERSTÄRKERS 有权
    方法线性化高频放大器

    公开(公告)号：EP1219025A1

    公开(公告)日：2002-07-03

    申请号：EP00960926.4

    申请日：2000-09-14

    申请人： Marconi Communications GmbH

    发明人： HOFMANN, Heike ,  HAGMANNS, Franz-Josef

    IPC分类号： H03F1/32

    CPC分类号： H03F1/3241

    摘要： A predistorter (PD) is connected upstream of the high-frequency amplifier (VV) to be linearised. A predistorsion factor (gPD) is adaptively modified in said predistorter in such a way as to compensate non-linearities of the amplifier (VV) as well as possible. According to the inventive method, the quotient of the output signal (z(t)) of the high-frequency amplifier (VV) and the input signal (x(t)) of the predistorter (PD) is produced first. An average amplification is then determined based on the signal quotient. A correction term is produced for the predistortion factor (gPD), this correction term being dependent on the extent of the deviation of the average amplification from a set value; and the predistortion factor (gPD) is adaptively modified in such a way as to minimize the correction term.