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    • 24. 发明授权
    • Transmitter and transmitting method
    • 发射机和发射方式
    • US09160379B2
    • 2015-10-13
    • US14380849
    • 2013-02-19
    • Shinichi Hori
    • Shinichi Hori
    • H04B1/04H03F3/217H03M3/00
    • H04B1/0475H03F1/02H03F3/217H03F3/24H03F2200/331H03M3/486H03M3/492H04B2001/045
    • A transmitter according to the present invention includes a level detector that detects the level value of an input signal, from among a predetermined number of level values; an upstream-side signal adjusting unit that amplifies the input signal and shifts the input signal for an offset amount based on an output signal of the level detector; a digital-sigma modulator having a quantizer that quantizes an output signal of the upstream-side signal adjusting unit with a predetermined number of bits, and a downstream-side signal adjusting unit that amplifies an output signal of the delta-sigma modulator and shifts the output signal of the delta-sigma modulator for an offset amount based on the output signal of the level detector.
    • 根据本发明的发射机包括:电平检测器,其从预定数量的电平值中检测输入信号的电平值; 上游侧信号调整单元,其基于所述电平检测器的输出信号,放大所述输入信号并使所述输入信号偏移偏移量; 具有量化器,其以预定位数对上游侧信号调整单元的输出信号进行量化的数字Σ调制器;以及下游侧信号调整单元,其对Δ-Σ调制器的输出信号进行放大, 基于电平检测器的输出信号的Δ-Σ调制器的输出信号的偏移量。
    • 30. 发明申请
    • TRANSMISSION DEVICE
    • 传输设备
    • US20130016795A1
    • 2013-01-17
    • US13514568
    • 2010-12-01
    • Kazuaki KunihiroShinichi HoriKazumi Shiikuma
    • Kazuaki KunihiroShinichi HoriKazumi Shiikuma
    • H04L27/00
    • H03F1/0288H03F1/32H03F3/2173H03F3/24
    • A transmission device includes a pulse modulated signal generator that generates a pulse-modulated signal by changing the width of a pulse or the density of a pulse according to the magnitude of the amplitude component of an input signal while discretely changing the pulse height according to the magnitude of the amplitude, a modulated-signal generator that generates a modulated signal by integrating the pulse-modulated signal and the phase component of the input signal, a power amplifier that includes at least as many amplifiers as the number of the discrete amplitude levels of the modulated signal, changes the number of amplifies that amplify the modulated signal on the basis of the value of the amplitude level of the modulated signal, combines outputs of the amplifiers, and outputs a combined output, and an output filter that eliminates a square-wave component from the output of the power amplifier.
    • 发送装置包括:脉冲调制信号发生器,其通过根据输入信号的幅度分量的大小改变脉冲的宽度或脉冲的密度,同时根据脉冲的高度离散地改变脉冲高度来产生脉冲调制信号 调幅信号发生器,其通过对脉冲调制信号和输入信号的相位分量进行积分来产生调制信号;功率放大器,其至少包括与离散振幅电平的数量相同的放大器, 调制信号根据调制信号的振幅电平的值改变放大调制信号的放大器的数量,组合放大器的输出,并输出组合输出,以及输出滤波器, 波分量从功率放大器的输出。