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    • 4. 发明申请
    • PREDISTORTER
    • US20100277236A1
    • 2010-11-04
    • US12746363
    • 2008-12-17
    • Kenichi HoriguchiNaoko MatsunagaRyoji Hayashi
    • Kenichi HoriguchiNaoko MatsunagaRyoji Hayashi
    • H03F1/26
    • H04B1/0475H03F1/30H03F1/3241H03F1/3247H03F3/189H03F3/245H03F2200/204H03F2200/207H03F2200/447H03F2200/451H03F2201/3209H03F2201/3224H03F2201/3233H04B2001/0425H04L27/368
    • Provided is a predistorter which compensates for a memory effect occurring in an amplifier used in a communication device, especially an electric memory effect as well. The predistorter includes: a distortion compensation circuit (8) for compensating for a nonlinear distortion caused by an amplifier (3), in which the distortion compensation circuit outputs a predistortion signal to be input to the amplifier. The predistorter includes: first filter section (21) which is connected between the distortion compensation circuit and the amplifier, for compensating for a frequency characteristic appearing in a signal component occurring in an entire analog circuit including the amplifier; and second filter section (22) which is connected between the distortion compensation circuit and the first filter section or between the first filter section and the amplifier, for compensating for a frequency characteristic appearing in a distortion component occurring in the amplifier.
    • 提供了一种预失真器,其补偿在通信设备中使用的放大器中发生的存储器效应,特别是电存储器效应。 预失真器包括:用于补偿由放大器(3)引起的非线性失真的失真补偿电路(8),其中失真补偿电路输出要输入到放大器的预失真信号。 预失真器包括:连接在失真补偿电路和放大器之间的第一滤波器部分(21),用于补偿出现在包括放大器的整个模拟电路中的信号分量中出现的频率特性; 和连接在失真补偿电路和第一滤波器部分之间或第一滤波器部分和放大器之间的第二滤波器部分(22),用于补偿出现在放大器中出现的失真分量中的频率特性。
    • 5. 发明授权
    • Predistorter
    • 预失真器
    • US08040182B2
    • 2011-10-18
    • US12746363
    • 2008-12-17
    • Kenichi HoriguchiNaoko MatsunagaRyoji Hayashi
    • Kenichi HoriguchiNaoko MatsunagaRyoji Hayashi
    • H03F1/26
    • H04B1/0475H03F1/30H03F1/3241H03F1/3247H03F3/189H03F3/245H03F2200/204H03F2200/207H03F2200/447H03F2200/451H03F2201/3209H03F2201/3224H03F2201/3233H04B2001/0425H04L27/368
    • Provided is a predistorter which compensates for a memory effect occurring in an amplifier used in a communication device, especially an electric memory effect as well. The predistorter includes: a distortion compensation circuit (8) for compensating for a nonlinear distortion caused by an amplifier (3), in which the distortion compensation circuit outputs a predistortion signal to be input to the amplifier. The predistorter includes: first filter section (21) which is connected between the distortion compensation circuit and the amplifier, for compensating for a frequency characteristic appearing in a signal component occurring in an entire analog circuit including the amplifier; and second filter section (22) which is connected between the distortion compensation circuit and the first filter section or between the first filter section and the amplifier, for compensating for a frequency characteristic appearing in a distortion component occurring in the amplifier.
    • 提供了一种预失真器,其补偿在通信设备中使用的放大器中发生的存储器效应,特别是电存储器效应。 预失真器包括:用于补偿由放大器(3)引起的非线性失真的失真补偿电路(8),其中失真补偿电路输出要输入到放大器的预失真信号。 预失真器包括:连接在失真补偿电路和放大器之间的第一滤波器部分(21),用于补偿出现在包括放大器的整个模拟电路中的信号分量中出现的频率特性; 和连接在失真补偿电路和第一滤波器部分之间或第一滤波器部分和放大器之间的第二滤波器部分(22),用于补偿出现在放大器中出现的失真分量中的频率特性。