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公开(公告)号：US07119621B2
公开(公告)日：2006-10-10
申请号：US10912116
申请日：2004-08-06
申请人： Ning Chen , Yasunori Suzuki , Tetsuo Hirota , Yasushi Yamao
发明人： Ning Chen , Yasunori Suzuki , Tetsuo Hirota , Yasushi Yamao
IPC分类号： H03F3/68
CPC分类号： H03F3/72 , H03F1/0277 , H03F3/2178 , H03F2200/75
摘要： A power amplifier for receiving and amplifying an input signal and outputting an output signal includes N power amplifying units (N is an integer larger than 1) connected in parallel so as to output amplified signals in response to the input signal; an output combining unit for combining the output signals from the N power amplifying units and outputting a combined signal as the output signal of the power amplifier; and an amplitude controlling unit for selectively turning ON each of the N power amplifying units based on an amplitude of the input signal. In the power amplifier, the amplitude controlling unit may includes N amplitude adjusters connected in parallel for adjusting the amplitude of the input signal of the power amplifier; and a controller for selectively turning ON each of the N power amplifying units and controlling the amplitude adjusters so that an amplitude of the output signal becomes a substantially continuous function with respect to the amplitude of the input signal.
摘要翻译： 用于接收和放大输入信号并输出输出信号的功率放大器包括并联连接的N个功率放大单元（N是大于1的整数），以响应输入信号输出放大的信号; 输出组合单元，用于组合来自N个功率放大单元的输出信号，并输出组合信号作为功率放大器的输出信号; 以及幅度控制单元，用于基于输入信号的幅度有选择地接通N个功率放大单元中的每一个。 在功率放大器中，振幅控制单元可以包括并联连接的N个振幅调节器，用于调节功率放大器的输入信号的幅度; 以及控制器，用于选择性地接通N个功率放大单元中的每一个并且控制幅度调节器，使得输出信号的幅度相对于输入信号的幅度变为基本上连续的函数。
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公开(公告)号：US20050030104A1
公开(公告)日：2005-02-10
申请号：US10912116
申请日：2004-08-06
申请人： Ning Chen , Yasunori Suzuki , Tetsuo Hirota , Yasushi Yamao
发明人： Ning Chen , Yasunori Suzuki , Tetsuo Hirota , Yasushi Yamao
CPC分类号： H03F3/72 , H03F1/0277 , H03F3/2178 , H03F2200/75
摘要： A power amplifier (1) for receiving and amplifying an input signal (10) and outputting an output signal (11) is disclosed. The power amplifier comprises: N power amplifying units (12) (N is an integer larger than 1) connected in parallel so as to output amplified signals in response to the input signal (10); an output combining unit (14) for combining the output signals from the N power amplifying units (12) and outputting a combined signal as the output signal (11) of the power amplifier; and an amplitude controlling unit (15) for selectively turning ON each of the N power amplifying units (12) based on an amplitude of the input signal (10). In the power amplifier, the amplitude controlling unit (15) may comprise N amplitude adjusters (113) connected in parallel for adjusting the amplitude of the input signal (110) of the power amplifier; and a controller (115) for selectively turning ON each of the N power amplifying units (112) and controlling the amplitude adjusters (113) so that an amplitude of the output signal (111) becomes a substantially continuous function with respect to the amplitude of the input signal (110). The power amplifier may further comprise a local oscillator (222) outputting an constant envelope signal, receiving a modulation signal (210) as the input signal of the power amplifier and outputting an amplified modulated signal (211) as the output signal of the power amplifier; wherein the N power amplifying units comprise N saturation amplifying units connected in parallel so as to amplify the constant envelope signal from the local oscillator; and the amplitude controlling unit comprises an amplifying controller (215) for selectively turning ON each of the N saturation amplifying units (212) based on an amplitude of the modulation signal (210).
摘要翻译： 公开了一种用于接收和放大输入信号（10）并输出输出信号（11）的功率放大器（1）。 功率放大器包括：并联连接的N个功率放大单元（12）（N是大于1的整数），以响应输入信号（10）输出放大的信号; 输出组合单元（14），用于组合来自N个功率放大单元（12）的输出信号并输出组合信号作为功率放大器的输出信号（11）; 以及用于基于所述输入信号（10）的幅度选择性地接通所述N个功率放大单元（12）中的每一个的振幅控制单元（15）。 在功率放大器中，振幅控制单元（15）可以包括并联连接的N个振幅调节器（113），用于调节功率放大器的输入信号（110）的振幅; 以及控制器（115），用于选择性地接通N个功率放大单元（112）中的每一个并且控制幅度调节器（113），使得输出信号（111）的幅度相对于 输入信号（110）。 功率放大器还可以包括输出恒定包络信号的本地振荡器（222），接收作为功率放大器的输入信号的调制信号（210），并输出放大的调制信号（211）作为功率放大器的输出信号 ; 其中所述N个功率放大单元包括并联连接的N个饱和放大单元，以便放大来自本地振荡器的恒定包络信号; 并且幅度控制单元包括放大控制器（215），用于基于调制信号（210）的幅度有选择地接通N个饱和放大单元（212）中的每一个。
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公开(公告)号：US07170342B2
公开(公告)日：2007-01-30
申请号：US10730141
申请日：2003-12-09
申请人： Yasunori Suzuki , Shinji Mizuta , Tetsuo Hirota , Yasushi Yamao
发明人： Yasunori Suzuki , Shinji Mizuta , Tetsuo Hirota , Yasushi Yamao
CPC分类号： H03F1/3247 , H03F1/3258
摘要： A combined signal of a digital pilot signal and a digital transmission signal is applied to a digital predistorter (20), wherein it is added with odd-order distortions based on a power series model to generate a predistorted signal, then the predistorted signal is converted by a DA converter (31) to an analog signal, then the analog signal is upconverted by a frequency upconverting part (33) to a send frequency band, and the upconverted signal is output after being amplified by a power amplifier (37). A pilot signal component is extracted from the power amplifier output, then odd-order distortion components of the power series model are extracted by a digital predistorter control part (50) from the pilot signal component, and the odd-order distortions in the digital predistorter (20) are controlled to decrease the levels of the distortion components.
摘要翻译： 数字导频信号和数字传输信号的组合信号被施加到数字预失真器（20），其中基于功率级数模型添加奇数失真以产生预失真信号，然后转换预失真信号 通过DA转换器（31）到模拟信号，则模拟信号由上变频部分（33）上变频到发送频带，并且上变频信号在被功率放大器（37）放大后输出。 从功率放大器输出提取导频信号分量，然后由数字预失真器控制部分（50）从导频信号分量提取功率系列模型的奇数阶失真分量，并且数字预失真器中的奇数阶失真 （20）被控制以降低失真分量的水平。
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公开(公告)号：US07042283B2
公开(公告)日：2006-05-09
申请号：US10806245
申请日：2004-03-23
申请人： Yasunori Suzuki , Shinji Mizuta , Tetsuo Hirota , Yasushi Yamao
发明人： Yasunori Suzuki , Shinji Mizuta , Tetsuo Hirota , Yasushi Yamao
IPC分类号： H03F3/66
CPC分类号： H03F3/24 , H03F1/0288 , H03F1/3258 , H03F2200/393
摘要： A transmission signal and a pilot signal are predistorted by a digital predistorter 13 by use of a power-series model, and the predistorted output is converted by a digital-analog converter 14 to an analog signal. The analog signal is up converted by a frequency converter 15 to an RF-band signal, which is transmitted after being power-amplified by a Doherty amplifier 16. The pilot signal is extracted by a pilot signal extractor 17 from the output from the Doherty amplifier, and the extracted pilot signal is down converted by a frequency converter 18 to a baseband signal. The baseband pilot signal is converted by an analog-digital converter 19 to a digital pilot signal. A control part 21 detects an odd-order distortion component from the digital pilot signal, and based on the detected result, controls parameters of the digital predistorter.
摘要翻译： 传输信号和导频信号由数字预失真器13通过使用功率系列模型进行预失真，并且预失真输出由数模转换器14转换为模拟信号。 模拟信号由频率转换器15上变频到RF带信号，该信号在由Doherty放大器16进行功率放大后传输。 导频信号由导频信号提取器17从Doherty放大器的输出提取，并且提取的导频信号由频率转换器18下变频到基带信号。 基带导频信号由模拟数字转换器19转换成数字导频信号。 控制部分21从数字导频信号中检测奇数失真分量，并根据检测结果控制数字预失真器的参数。
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公开(公告)号：US07170344B2
公开(公告)日：2007-01-30
申请号：US11045337
申请日：2005-01-31
IPC分类号： H03F1/26
CPC分类号： H03F1/3258 , H03F1/3241 , H03F1/3252
摘要： A transmission signal containing signals of a plurality of frequency bands is divided and fed to a linear signal transfer path including a delay circuit and a plurality of distortion generation paths for the plurality of frequency bands. In each distortion generation path, the signal of the corresponding frequency band is extracted by a band signal extractor from the signal fed to the path, an odd-order distortion of the extracted signal is generated by an odd-order distortion generator, and the phase and amplitude of the odd-order distortion are adjusted by a vector adjuster to provide the output signal of the distortion generation path. The output signals from such plurality of distortion generation paths are combined by a combiner with the output from the linear signal transfer path to provide the combined output as the output from a multi-band predistorter using power series representation.
摘要翻译： 包含多个频带的信号的发送信号被分割并馈送到包括用于多个频带的延迟电路和多个失真产生路径的线性信号传送路径。 在每个失真产生路径中，通过频带信号提取器从馈送到路径的信号中提取对应频带的信号，由奇数阶失真发生器产生提取信号的奇数失真， 并且通过矢量调整器调整奇数失真的幅度，以提供失真产生路径的输出信号。 来自这样的多个失真产生路径的输出信号由组合器与来自线性信号传送路径的输出组合，以使用功率级数表示来提供组合输出作为来自多频带预失真器的输出。
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公开(公告)号：US20050168283A1
公开(公告)日：2005-08-04
申请号：US11045337
申请日：2005-01-31
CPC分类号： H03F1/3258 , H03F1/3241 , H03F1/3252
摘要： A transmission signal containing signals of a plurality of frequency bands is divided and fed to a linear signal transfer path including a delay circuit and a plurality of distortion generation paths for the plurality of frequency bands. In each distortion generation path, the signal of the corresponding frequency band is extracted by a band signal extractor from the signal fed to the path, an odd-order distortion of the extracted signal is generated by an odd-order distortion generator, and the phase and amplitude of the odd-order distortion are adjusted by a vector adjuster to provide the output signal of the distortion generation path. The output signals from such plurality of distortion generation paths are combined by a combiner with the output from the linear signal transfer path to provide the combined output as the output from a multi-band predistorter using power series representation.
摘要翻译： 包含多个频带的信号的发送信号被分割并馈送到包括用于多个频带的延迟电路和多个失真产生路径的线性信号传送路径。 在每个失真产生路径中，通过频带信号提取器从馈送到路径的信号中提取对应频带的信号，由奇数阶失真发生器产生提取信号的奇数失真， 并且通过矢量调整器调整奇数失真的幅度，以提供失真产生路径的输出信号。 来自这样的多个失真产生路径的输出信号由组合器与来自线性信号传送路径的输出组合，以使用功率级数表示来提供组合输出作为来自多频带预失真器的输出。
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公开(公告)号：US07418056B2
公开(公告)日：2008-08-26
申请号：US11044586
申请日：2005-01-28
申请人： Yasunori Suzuki , Shinji Mizuta , Yasushi Yamao
发明人： Yasunori Suzuki , Shinji Mizuta , Yasushi Yamao
IPC分类号： H04L25/49
CPC分类号： H03F1/3258 , H03F1/3247 , H03F1/3294 , H03F2200/336 , H03F2201/3209
摘要： A digital predistorter compensates for nonlinear distortion of a power amplifier using a power series model. The digital predistorter includes a distortion generating unit configured to introduce a nonlinear distortion component of a prescribed order into a digital input signal supplied to the digital predistorter. The distortion generating unit has a multiplier configured to raise the digital input signal to a power consistent with the prescribed order of the nonlinear distortion component, and a finite impulse response filter connected in series with the multiplier. The digital predistorter also includes an adaptive controller configured to receive a reference signal and adaptively adjust the tap coefficient of the finite impulse response filter so as to bring the reference signal to a desired level.
摘要翻译： 数字预失真器补偿使用功率系列模型的功率放大器的非线性失真。 数字预失真器包括：失真产生单元，被配置为将规定顺序的非线性失真分量引入到提供给数字预失真器的数字输入信号中。 失真产生单元具有被配置为将数字输入信号提升到与非线性失真分量的规定顺序一致的功率的乘法器和与乘法器串联连接的有限脉冲响应滤波器。 数字预失真器还包括自适应控制器，其被配置为接收参考信号并且自适应地调整有限脉冲响应滤波器的抽头系数，以使参考信号达到期望的水平。
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公开(公告)号：US20050180527A1
公开(公告)日：2005-08-18
申请号：US11044586
申请日：2005-01-28
申请人： Yasunori Suzuki , Shinji Mizuta , Yasushi Yamao
发明人： Yasunori Suzuki , Shinji Mizuta , Yasushi Yamao
CPC分类号： H03F1/3258 , H03F1/3247 , H03F1/3294 , H03F2200/336 , H03F2201/3209
摘要： A digital predistorter compensates for nonlinear distortion of a power amplifier using a power series model. The digital predistorter includes a distortion generating unit configured to introduce a nonlinear distortion component of a prescribed order into a digital input signal supplied to the digital predistorter. The distortion generating unit has a multiplier configured to raise the digital input signal to a power consistent with the prescribed order of the nonlinear distortion component, and a finite impulse response filter connected in series with the multiplier. The digital predistorter also includes an adaptive controller configured to receive a reference signal and adaptively adjust the tap coefficient of the finite impulse response filter so as to bring the reference signal to a desired level.
摘要翻译： 数字预失真器补偿使用功率系列模型的功率放大器的非线性失真。 数字预失真器包括：失真产生单元，被配置为将规定顺序的非线性失真分量引入到提供给数字预失真器的数字输入信号中。 失真产生单元具有被配置为将数字输入信号提升到与非线性失真分量的规定顺序一致的功率的乘法器和与乘法器串联连接的有限脉冲响应滤波器。 数字预失真器还包括自适应控制器，其被配置为接收参考信号并且自适应地调整有限脉冲响应滤波器的抽头系数，以使参考信号达到期望的水平。
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公开(公告)号：US07072409B2
公开(公告)日：2006-07-04
申请号：US09861717
申请日：2001-05-22
申请人： Yasunori Suzuki , Tetsuo Hirota , Toshio Nojima
发明人： Yasunori Suzuki , Tetsuo Hirota , Toshio Nojima
IPC分类号： H04L27/00
CPC分类号： H04B7/0854
摘要： A radio communication system is comprised of: a transmitting system in which N transmission signals, frequency-converted to the same transmission frequency, are generated by N transmitters, N being an integer equal to or greater than 2, and the transmission signals are each applied to each one of N elements of an antenna for transmission; and a receiving system in which each transmitted signal is received by N-element antenna and the cross correlation coefficient between the transmitted signals received by the N-elements is minimized to thereby reconstruct each transmitted signal. The plural transmitted signals of the same frequency are received and the cross correlation coefficients of the received transmitted signals are minimized to thereby permit multiplexing of the transmission signal.
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公开(公告)号：US06515544B1
公开(公告)日：2003-02-04
申请号：US09850733
申请日：2001-05-17
申请人： Yasunori Suzuki , Tetsuo Hirota , Toshio Nojima
发明人： Yasunori Suzuki , Tetsuo Hirota , Toshio Nojima
IPC分类号： H03F100
摘要： A feed-forward amplifier configuration 40n having a distortion detector circuit and a distortion canceller circuit is formed between an input port Ipn and an output port OPn of a multi-terminal power-combining power amplifier with a main amplifier 4M provided for each channel between an input-side multi-terminal power combiner 3 and an output-side multi-terminal power combiner 5.
摘要翻译： 具有失真检测器电路和失真消除电路的前馈放大器配置40n形成在多端子功率合成功率放大器的输入端口Ipn和输出端口OPn之间，其具有为每个通道设置的主放大器4M 输入侧多端子功率合成器3和输出侧多端子功率合成器5。
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