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    • 4. 发明授权
    • Pulse-width modulator and methods of implementing and using the same
    • 脉宽调制器及其实现与使用方法
    • US08767814B2
    • 2014-07-01
    • US13417000
    • 2012-03-09
    • Christian SchuberthPeter SingerlMartin Mataln
    • Christian SchuberthPeter SingerlMartin Mataln
    • H03K7/08
    • H03K7/08H04L25/4902
    • A pulse-width modulator (PWM) includes a plurality of comparators for comparing an input signal with a plurality of reference signals and for providing a plurality of corresponding comparison signals. The pulse-width modulator also includes a combinational logic for receiving the plurality of comparison signals and for generating a plurality of binary pulse-width modulation signals on the basis of the plurality of comparison signals. At most only a currently selected binary pulse-width modulation signal of the binary pulse-width modulation signals is at a first signal level at a time. The currently selected binary pulse-width modulation signal is associated to a specific reference signal of the plurality of reference signals which is currently closest to the input signal among the plurality of reference signals in terms of a given amplitude relation between the plurality of reference signals and the input signal.
    • 脉冲宽度调制器(PWM)包括多个比较器,用于将输入信号与多个参考信号进行比较,并用于提供多个对应的比较信号。 脉冲宽度调制器还包括用于接收多个比较信号的组合逻辑,并且用于基于多个比较信号产生多个二进制脉冲宽度调制信号。 二进制脉冲宽度调制信号中最多只有当前选择的二进制脉宽调制信号一次处于第一信号电平。 当前选择的二进制脉冲宽度调制信号与多个参考信号中当前最接近多个参考信号中的输入信号的特定参考信号相关联,就多个参考信号和 输入信号。
    • 6. 发明申请
    • MODULATION SYSTEM AND METHOD FOR SWITCHED AMPLIFIERS
    • 用于开关放大器的调制系统和方法
    • US20090270056A1
    • 2009-10-29
    • US12111654
    • 2008-04-29
    • Peter SingerlAndreas Wiesbauer
    • Peter SingerlAndreas Wiesbauer
    • H04B1/04H01Q11/12
    • H04B1/0475H03F1/02H03F3/24H04B2001/045
    • A power amplifier includes a baseband modulator configured to receive a baseband amplitude component and generate a baseband modulated pulse string, an oscillator configured to receive a baseband phase component and generate phase modulated complex carrier signals, a complex up-converter configured to receive and mix the baseband modulated pulse string with the phase modulated complex carrier signals into mixed product signals, and two or more switched mode power amplifiers coupled to the complex up-converter, configured to amplify and switch the mixed product signals at the carrier frequency. The power amplifier further comprises complex filters individually coupled to one of the switch mode power amplifiers, configured to suppress image components in the amplified and switched mixed product signals, and a power combiner coupled to the two or more complex filters, configured to combine the real component of the complex filtered and amplified mixed product signals to generate an RF transmission signal.
    • 功率放大器包括:基带调制器,被配置为接收基带振幅分量并产生基带调制脉冲串;振荡器,被配置为接收基带相位分量并产生相位调制的复数载波信号;复合上变频器,被配置为接收和混合 具有相位调制复载波信号的基带调制脉冲串到混合乘积信号中,并且耦合到复合上变频器的两个或更多个开关模式功率放大器被配置为在载波频率处放大和切换混合乘积信号。 功率放大器还包括单独耦合到开关模式功率放大器之一的复合滤波器,其被配置为抑制放大和切换的混合乘积信号中的图像分量,以及耦合到两个或更多个复杂滤波器的功率组合器,被配置为组合真实的 复合滤波和放大的混合乘积信号的分量以产生RF传输信号。
    • 7. 发明授权
    • Adaptive predistorter coupled to a nonlinear element
    • 耦合到非线性元件的自适应预失真器
    • US07606539B2
    • 2009-10-20
    • US11500107
    • 2006-08-07
    • Peter SingerlHeinz Koeppl
    • Peter SingerlHeinz Koeppl
    • H04B1/04H03F1/26H04K1/02
    • H04B1/0475H03F1/3241H03F1/3247H03F1/34H03F3/24H03F2200/207H04B2001/0425H04B2001/0433
    • In one embodiment, a circuit comprises an adaptive predistorter and a nonlinear element coupled to an output of the predistorter. The predistorter is operative to predistort an input signal according to predistortion control parameters at a given sampling rate. The circuit further comprises an identification unit and a translation unit. The identification unit identifies nonlinearity parameters representing the nonlinearity of the nonlinear element by sampling the output of the nonlinear element at an identification sampling rate lower than twice a bandwidth at the output of the nonlinear element. The translation unit translates the identified nonlinearity parameters into the predistortion control parameters. Other systems and methods are disclosed.
    • 在一个实施例中,电路包括耦合到预失真器的输出的自适应预失真器和非线性元件。 预失真器用于根据预失真控制参数以给定的采样速率来预失真输入信号。 电路还包括识别单元和翻译单元。 识别单元通过以低于非线性元件的输出的带宽的两倍的识别采样率对非线性元件的输出进行采样来识别表示非线性元件的非线性的非线性参数。 翻译单元将所识别的非线性参数转换为预失真控制参数。 公开了其它系统和方法。
    • 9. 发明授权
    • Adaptive predistorter coupled to a nonlinear element
    • 耦合到非线性元件的自适应预失真器
    • US08626089B2
    • 2014-01-07
    • US12511999
    • 2009-07-29
    • Peter SingerlHeinz Koeppl
    • Peter SingerlHeinz Koeppl
    • H04B1/04H03F1/26H04K1/02
    • H04B1/0475H03F1/3241H03F1/3247H03F1/34H03F3/24H03F2200/207H04B2001/0425H04B2001/0433
    • In one embodiment, a circuit comprises an adaptive predistorter and a nonlinear element coupled to an output of the predistorter. The predistorter is operative to predistort an input signal according to predistortion control parameters at a given sampling rate. The circuit further comprises an identification unit and a translation unit. The identification unit identifies nonlinearity parameters representing the nonlinearity of the nonlinear element by sampling the output of the nonlinear element at an identification sampling rate lower than twice a bandwidth at the output of the nonlinear element. The translation unit translates the identified nonlinearity parameters into the predistortion control parameters. Other systems and methods are disclosed.
    • 在一个实施例中,电路包括耦合到预失真器的输出的自适应预失真器和非线性元件。 预失真器用于根据预失真控制参数以给定的采样速率来预失真输入信号。 电路还包括识别单元和翻译单元。 识别单元通过以低于非线性元件的输出的带宽的两倍的识别采样率对非线性元件的输出进行采样来识别表示非线性元件的非线性的非线性参数。 翻译单元将所识别的非线性参数转换为预失真控制参数。 公开了其它系统和方法。
    • 10. 发明申请
    • Pulse-Width Modulator and Methods of Implementing and Using the Same
    • 脉宽调制器及其实现与使用方法
    • US20130235923A1
    • 2013-09-12
    • US13417000
    • 2012-03-09
    • Christian SchuberthPeter SingerlMartin Mataln
    • Christian SchuberthPeter SingerlMartin Mataln
    • H04L27/04H03F3/68H03K7/08
    • H03K7/08H04L25/4902
    • A pulse-width modulator (PWM) includes a plurality of comparators for comparing an input signal with a plurality of reference signals and for providing a plurality of corresponding comparison signals. The pulse-width modulator also includes a combinational logic for receiving the plurality of comparison signals and for generating a plurality of binary pulse-width modulation signals on the basis of the plurality of comparison signals. At most only a currently selected binary pulse-width modulation signal of the binary pulse-width modulation signals is at a first signal level at a time. The currently selected binary pulse-width modulation signal is associated to a specific reference signal of the plurality of reference signals which is currently closest to the input signal among the plurality of reference signals in terms of a given amplitude relation between the plurality of reference signals and the input signal.
    • 脉冲宽度调制器(PWM)包括多个比较器,用于将输入信号与多个参考信号进行比较,并用于提供多个对应的比较信号。 脉冲宽度调制器还包括用于接收多个比较信号的组合逻辑,并且用于基于多个比较信号产生多个二进制脉冲宽度调制信号。 二进制脉冲宽度调制信号中最多只有当前选择的二进制脉宽调制信号一次处于第一信号电平。 当前选择的二进制脉冲宽度调制信号与多个参考信号中当前最接近多个参考信号中的输入信号的特定参考信号相关联,就多个参考信号和 输入信号。