公开(公告)号：EP1111868A2

公开(公告)日：2001-06-27

申请号：EP00311516.9

申请日：2000-12-21

申请人： NORTEL NETWORKS CORPORATION

发明人： Dolman, Graham

IPC分类号： H04L27/36 ,  H03F1/32

CPC分类号： H04L27/368 ,  H03F1/3247 ,  H03F1/3282 ,  H03F2200/102

摘要： This invention relates to a phase and amplitude detector (160) required to identify small signal errors in a signal envelope having a large dynamic range, especially in the context of linearization of a power amplifier (122) arrangement employing a pre-distortion technique. A vector generator (300, 352, 372) responsive to a reference signal R (110) produces a frame of reference vectors R 1 - R n (274-280) generated by a combination of the reference signal R (110) with first A (270) and second P (272) offset vectors that provide an amplitude and phase displacement of the reference signal R (110). A signal combiner (290-296, 360-366, 390-396) is arranged to generate difference vectors E 1 - E n by combining the frame of reference vectors R 1 - R n (274-280) and the feedback signal F (124, 150), with the difference vectors E 1 - E n expressing the phase (p, 254) and the gain (a, 252) error terms relative to the reference signal R (110) and the first A (270) and second P (272) offset vectors. An error signal detector, (330-336) responsive to the difference vectors E 1 - E n and arranged to provide a measure of the phase (p, 254) and the gain (a, 252) error terms, provides signal amplitudes that can be combined to generate error signals (182 (Y), 184 X)). The error signals take the general form: X = P 1 - P 2 - P 3 + P 4 = -8 P ̲ p R ̲ ; Y = P 1 + P 2 - P 3 - P 4 = -8 A ̲ a R ̲

摘要翻译： 本发明涉及一种在具有大动态范围的信号包络，以确定小信号误差所需的相位和幅值检测器（160），爱特别是在功率放大器的线性化的上下文（122）布置采用预失真技术。 甲矢量发生器（300，352，372），响应于一个基准信号R（110）产生（270与第一A由参考信号R（110）的组合产生参考矢量R1-RN（274-280）的帧 ）和第二P（272）偏移向量的确提供所述参考信号R（110）的振幅和相位的位移。 的信号组合器（290-296，360-366，390-396）被布置为生成差通过组合的参考矢量R1-Rn中的帧（274-280）和反馈信号F矢量E1-EN（124，150） 与差矢量E1恩表达相位（p，254）和增益（，252）相对于所述参考信号R（110）和所述第一A（270）和第二p（272）误差项偏移矢量 ， 响应于差值的误差信号检测器（330-336）载体E1恩和布置成提供所述相位（P，254）和增益（A，252）的误差项的测量，提供信号幅度确实可以组合 以产生误差信号（182（Y），184 X））。 该误差信号采取的一般形式： X = P1 - P2 - P3 + P4 = -8PpR; Y = P1 + P2 - P3 - P4 = -8AaR

公开(公告)号：EP1111868A3

公开(公告)日：2003-12-17

申请号：EP00311516.9

申请日：2000-12-21

申请人： NORTEL NETWORKS CORPORATION

发明人： Dolman, Graham

IPC分类号： H04L27/36 ,  H03F1/32

CPC分类号： H04L27/368 ,  H03F1/3247 ,  H03F1/3282 ,  H03F2200/102

摘要： This invention relates to a phase and amplitude detector (160) required to identify small signal errors in a signal envelope having a large dynamic range, especially in the context of linearization of a power amplifier (122) arrangement employing a pre-distortion technique. A vector generator (300, 352, 372) responsive to a reference signal R (110) produces a frame of reference vectors R 1 - R n (274-280) generated by a combination of the reference signal R (110) with first A (270) and second P (272) offset vectors that provide an amplitude and phase displacement of the reference signal R (110). A signal combiner (290-296, 360-366, 390-396) is arranged to generate difference vectors E 1 - E n by combining the frame of reference vectors R 1 - R n (274-280) and the feedback signal F (124, 150), with the difference vectors E 1 - E n expressing the phase (p, 254) and the gain (a, 252) error terms relative to the reference signal R (110) and the first A (270) and second P (272) offset vectors. An error signal detector, (330-336) responsive to the difference vectors E 1 - E n and arranged to provide a measure of the phase (p, 254) and the gain (a, 252) error terms, provides signal amplitudes that can be combined to generate error signals (182 (Y), 184 X)). The error signals take the general form:X = P1 - P2 - P3 + P4 = -8PpR;Y = P1 + P2 - P3 - P4 = -8AaR