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    • 3. 发明公开
    • In-line distortion cancellation circuits for linearization of electronic and optical signals with phase and frequency adjustment
    • In-line-Verzerrungsunterdrückungsschaltungenfürelektronische und optische Signalenlinearisierung mit Phasen- und Frequenzabgleich
    • EP1871005A1
    • 2007-12-26
    • EP06023469.7
    • 2006-11-10
    • Emcore Corporation
    • Peral, Evia
    • H03F1/32H03F3/08H04B10/155
    • H03F3/08H03F1/32H03F1/3241H03F1/3276H03F2200/63H04B10/58
    • A distortion circuit is provided for correcting the distortion from a nonlinear circuit element by generating a frequency dependent signal having a sign opposite to the distortion signal produced by the nonlinear circuit and substantially the same magnitude. The distortion circuit includes an input signal (IN) and a first nonlinear device (D1) coupled to the input signal (IN) for generating a first signal and where the first nonlinear device (D1) has a first bias level (D1BIAS). Also included is a second nonlinear device (D2) different from the first nonlinear device (D1) and coupled to the first nonlinear device (D1) for modifying the first signal to produce an output second signal, the second nonlinear device (D2) having a second bias level (D2BIAS). A bias control means is provided for adjusting the first and said second bias levels (D1BIAS,D2BIAS) so that the magnitude, phase and frequency of the output second signal can be adjusted.
    • 提供了一种失真电路,用于通过产生具有与非线性电路产生的失真信号相反的符号的频率相关信号和基本上相同的幅度来校正来自非线性电路元件的失真。 失真电路包括输入信号(IN)和耦合到输入信号(IN)的第一非线性器件(D1),用于产生第一信号,其中第一非线性器件(D1)具有第一偏置电平(D1BIAS)。 还包括与第一非线性装置(D1)不同的第二非线性装置(D2),并耦合到第一非线性装置(D1),用于修改第一信号以产生输出第二信号,第二非线性装置(D2)具有 第二偏差水平(D2BIAS)。 提供偏置控制装置用于调整第一和第二偏置电平(D1BIAS,D2BIAS),使得可以调节输出第二信号的幅度,相位和频率。