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    • 3. 发明申请
    • Distortion compensating device and power amplifying device with distortion compensating function
    • 具有失真补偿功能的失真补偿装置和功率放大装置
    • US20050212595A1
    • 2005-09-29
    • US11045262
    • 2005-01-31
    • Shigeo KusunokiKatsuji Kawakami
    • Shigeo KusunokiKatsuji Kawakami
    • H03F1/32H03F3/24H04B1/04H03F1/26
    • H03F1/3276
    • One divided signal divided into two by a dividing circuit is inputted to a gate of a source grounded FET through a first matching circuit. In a drain of the FET, a second harmonic having a phase and an amplitude in accordance with an impedance of the first matching circuit is generated and extracted in a band pass filter and then the amplitude is adjusted in an attenuation circuit to input to an addition circuit through a second matching circuit. In the addition circuit, the output of the second matching circuit is added to another divided signal of the dividing circuit and inputted to a power amplifier. The impedance in the first matching circuit affecting the phase of the second harmonic generated from the FET is set so that a distortion component generated in the power amplifier is compensated for by the second harmonic inputted in the addition circuit.
    • 通过分频电路将二分频信号通过第一匹配电路输入到源极接地FET的栅极。 在FET的漏极中,在带通滤波器中产生并提取具有根据第一匹配电路的阻抗的相位和幅度的二次谐波,然后在衰减电路中调整振幅以输入到加法 电路通过第二匹配电路。 在加法电路中,将第二匹配电路的输出添加到除法电路的另一分频信号并输入功率放大器。 影响从FET产生的二次谐波的相位的第一匹配电路中的阻抗被设定为使得在功率放大器中产生的失真分量由输入到加法电路中的二次谐波补偿。
    • 4. 发明授权
    • Distortion compensating device and power amplifying device with distortion compensating function
    • 具有失真补偿功能的失真补偿装置和功率放大装置
    • US07259621B2
    • 2007-08-21
    • US11045262
    • 2005-01-31
    • Shigeo KusunokiKatsuji Kawakami
    • Shigeo KusunokiKatsuji Kawakami
    • H03F1/26
    • H03F1/3276
    • One divided signal divided into two by a dividing circuit is inputted to a gate of a source grounded FET through a first matching circuit. In a drain of the FET, a second harmonic having a phase and an amplitude in accordance with an impedance of the first matching circuit is generated and extracted in a band pass filter and then the amplitude is adjusted in an attenuation circuit to input to an addition circuit through a second matching circuit. In the addition circuit, the output of the second matching circuit is added to another divided signal of the dividing circuit and inputted to a power amplifier. The impedance in the first matching circuit affecting the phase of the second harmonic generated from the FET is set so that a distortion component generated in the power amplifier is compensated for by the second harmonic inputted in the addition circuit.
    • 通过分频电路将二分频信号通过第一匹配电路输入到源极接地FET的栅极。 在FET的漏极中,在带通滤波器中产生并提取具有根据第一匹配电路的阻抗的相位和幅度的二次谐波,然后在衰减电路中调整振幅以输入到加法 电路通过第二匹配电路。 在加法电路中,将第二匹配电路的输出添加到除法电路的另一分频信号并输入功率放大器。 影响从FET产生的二次谐波的相位的第一匹配电路中的阻抗被设定为使得在功率放大器中产生的失真分量由输入到加法电路中的二次谐波补偿。