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11. 发明授权

US07795965B2 Cryogenic receiving amplifier and amplifying method 失效
标题翻译：低温接收放大器和放大方法
公开(公告)号：US07795965B2
公开(公告)日：2010-09-14
申请号：US12035797
申请日：2008-02-22
申请人： Yasunori Suzuki , Shoichi Narahashi
发明人： Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H03F17/00
CPC分类号： H03F3/193
摘要： The present invention discloses a cryogenic receiving amplifier using a gallium nitride high electron mobility transistor (GaN HEMT) as an amplifying device in a cryogenic temperature environment. The cryogenic receiving amplifier includes an input matching circuit which makes an impedance matching between a gate of the amplifying device and an outside of an input terminal, a gate biasing circuit which applies a DC voltage to the gate of the amplifying device, an output matching circuit which makes an impedance matching between a drain of the amplifying device and an outside of an output terminal, and a drain biasing circuit which applies a DC voltage to the drain of the amplifying device. The cooled temperature is preferably set to 150 K or below, and the GaN HEMT may be illuminated with light of a blue LED.
摘要翻译：本发明公开了一种在低温环境中使用氮化镓高电子迁移率晶体管（GaN HEMT）作为放大装置的低温接收放大器。低温接收放大器包括：输入匹配电路，其在放大装置的栅极与输入端子的外部之间形成阻抗匹配;栅极偏置电路，对直流放大装置的栅极施加直流电压;输出匹配电路这使得放大装置的漏极和输出端子的外部之间的阻抗匹配，以及向放大装置的漏极施加DC电压的漏极偏置电路。冷却的温度优选设定为150K以下，并且GaN HEMT可以用蓝色LED的光照射。

12. 发明授权

US07183847B2 Multi-band look-up table type predistorter 有权
标题翻译：多频段查找表型预失真器
公开(公告)号：US07183847B2
公开(公告)日：2007-02-27
申请号：US11043142
申请日：2005-01-27
申请人： Yasunori Suzuki , Shoichi Narahashi
发明人： Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H03F1/26
CPC分类号： H03F1/3252 , H03F1/3241 , H03F1/3247 , H03F3/189 , H03F2201/3233
摘要： A predistorter compensates, with high accuracy, for a distortion in each frequency band by a power amplifier that amplifies a transmission signal containing multiple frequency bands whose center frequencies are widely spaced apart. Signals of the respective frequency bands are extracted by multiple band signal extractors from the input signal containing transmission signals of multiple frequency bands; differences between the extracted signals and the output signal from the power amplifier are detected by multiple difference detectors in the respective bands; the detected difference signals are used as reference signals to read out compensation data from look-up tables for the respective frequency bands; the compensation data is added by multiple adders to the extracted transmission signals of the respective frequency bands; and the added outputs are combined by a combiner to provide the output signal from the predistorter.
摘要翻译：预失真器通过功率放大器以高精度补偿每个频带的失真，功率放大器放大包含中心频率间隔很大的多个频带的传输信号。由多个频带信号提取器从包含多个频带的发送信号的输入信号中提取各个频带的信号; 提取的信号和来自功率放大器的输出信号之间的差异由各个频带中的多个差分检测器检测; 检测到的差分信号用作参考信号，以从各个频带的查找表读出补偿数据; 补偿数据由多个加法器相加到提取的各个频带的发送信号; 并且相加的输出由组合器组合以提供来自预失真器的输出信号。

13. 发明授权

US07170344B2 Multi-band predistorter using power series representation 有权
标题翻译：多波段预失真器采用幂级数表示法
公开(公告)号：US07170344B2
公开(公告)日：2007-01-30
申请号：US11045337
申请日：2005-01-31
申请人： Yasunori Suzuki , Shoichi Narahashi , Shinji Mizuta , Yasushi Yamao
发明人： Yasunori Suzuki , Shoichi Narahashi , Shinji Mizuta , Yasushi Yamao
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。

14. 发明申请

US20060273854A1 Band selection type feed forward amplifier 失效
标题翻译：频段选择型前馈放大器
公开(公告)号：US20060273854A1
公开(公告)日：2006-12-07
申请号：US11445402
申请日：2006-06-02
申请人： Yasunori Suzuki , Shoichi Narahashi
发明人： Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H03F1/00
CPC分类号： H03F1/3223
摘要： The present invention has for its object to provide, in an environment where plural radio systems coexist, a feed forward amplifier capable of adaptively selecting a frequency band. The feed forward amplifier of the present invention comprises a distortion detection circuit and a distortion elimination circuit and has n first vector adjusters 4 which have different operating frequency bands and are inserted in a first vector adjustment path 14 of the distortion detection circuit; and n second vector adjusters 11 which have frequency bands corresponding to those of first vector adjusters 4 and are inserted in a second vector adjustment path 8 of the distortion elimination circuit. By means of a first switching means 3 selecting one first vector adjuster 4 and a second switching means 10 selecting a second vector adjuster 11, the frequency band for which distortion component is compensated in the feed forward amplifier is controlled by switching.
摘要翻译：本发明的目的是在多个无线电系统共存的环境中提供能够自适应地选择频带的前馈放大器。本发明的前馈放大器包括失真检测电路和失真消除电路，并且具有n个第一矢量调整器4，其具有不同的工作频带并插入到失真检测电路的第一矢量调节路径14中; 和n个第二矢量调整器11，其具有与第一矢量调节器4的频带对应的频带，并被插入到失真消除电路的第二矢量调整路径8中。通过选择一个第一矢量调节器4和选择第二矢量调节器11的第二切换装置10的第一切换装置3，通过切换来控制在前馈放大器中补偿失真分量的频带。

15. 发明申请

US20060262880A1 Power series predistorter and control method thereof 失效
标题翻译：电力系列预失真器及其控制方法
公开(公告)号：US20060262880A1
公开(公告)日：2006-11-23
申请号：US11434068
申请日：2006-05-16
申请人： Shinji Mizuta , Yasunori Suzuki , Shoichi Narahashi
发明人： Shinji Mizuta , Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H04L25/49
CPC分类号： H03F1/3258
摘要： In a distortion generation path of a power series predistorter, a frequency characteristic compensator that adjusts the frequency characteristic of a distortion component is provided in series with an odd-order distortion generator. The output of a power amplifier is divided to obtain an output signal of the power amplifier, the output signal of the power amplifier is down-converted by a down converter, and a distortion detector detects a distortion component in the down-converted signal of base band. The frequency characteristic of the distortion component is split into windows each having a band width of Δf by a distortion component frequency characteristic splitter, and the power of the distortion component in each window is detected. Based on the detected power, the frequency characteristic compensator adjusts a part of the frequency characteristic of the distortion component associated with each window.
摘要翻译：在功率系列预失真器的失真产生路径中，与奇数失真发生器串联地提供调整失真分量的频率特性的频率特性补偿器。功率放大器的输出被分割以获得功率放大器的输出信号，功率放大器的输出信号由下变频器下变频，并且失真检测器检测基极的下变频信号中的失真分量带。通过失真分量频率特性分离器将失真分量的频率特性分割成具有Deltaf带宽的窗口，并且检测每个窗口中的失真分量的功率。基于检测到的功率，频率特性补偿器调整与每个窗口相关联的失真分量的频率特性的一部分。

16. 发明申请

US20050168283A1 Multi-band predistorter using power series representation 有权
标题翻译：多波段预失真器采用幂级数表示法
公开(公告)号：US20050168283A1
公开(公告)日：2005-08-04
申请号：US11045337
申请日：2005-01-31
申请人： Yasunori Suzuki , Shoichi Narahashi , Shinji Mizuta , Yasushi Yamao
发明人： Yasunori Suzuki , Shoichi Narahashi , Shinji Mizuta , Yasushi Yamao
IPC分类号： H03F1/32 , H04B1/62 , 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。

17. 发明授权

US08314656B2 Power series digital predistorter and distortion compensation control method thereof 失效
标题翻译：电力系列数字预失真器及其失真补偿控制方法
公开(公告)号：US08314656B2
公开(公告)日：2012-11-20
申请号：US13033279
申请日：2011-02-23
申请人： Junya Ohkawara , Yasunori Suzuki , Shoichi Narahashi
发明人： Junya Ohkawara , Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H03F1/32
CPC分类号： H03F1/3282 , H03F1/3247 , H03F1/3258
摘要： Coefficients W0, W1 and W2 to be used in finding a new quadratic function f2(W) indicating dependence of a distortion component on an coefficient by the least square method are obtained as values that satisfy a relational expression f1(W0)=f1(W2)=f1(W1)+P (where P is a true value) on the basis of a quadratic function f1(W) indicating unupdated distortion component coefficient dependence.
摘要翻译：作为满足关系式f1（W0）= f1（W2）的值，求出用于求出表示失真分量对系数的最小二乘法的相关性的新的二次函数f2（W）的系数W0，W1，W2 ）= f1（W1）+ P（其中P是真值），其基于表示未更新的失真分量系数依赖性的二次函数f1（W）。

18. 发明授权

US08295789B2 Multi-band lookup table type predistorter 失效
标题翻译：多频段查找表型预失真器
公开(公告)号：US08295789B2
公开(公告)日：2012-10-23
申请号：US12493725
申请日：2009-06-29
申请人： Yasunori Suzuki , Shoichi Narahashi
发明人： Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H04B1/04
CPC分类号： H03F1/3252 , H03F1/3247 , H03F2200/111
摘要： A lookup table type predistorter for reading out distortion compensation data by using a difference signal between a power amplifier input signal and an output signal as a reference signal; wherein N input side variable band signal extractors extract transmitting signals in N frequency bands from the input signal, N output side variable band signal extractors extract signals in N frequency bands from the output of power amplifier, and N difference detectors detect differences between N frequency band signals respectively detected at the input side and the output side as N reference signals, which are used to read out N compensation data from N lookup tables, the N compensation data are added to the transmitting signals in N frequency bands, and N results of addition are combined to produce an output of the predistorter.
摘要翻译：一种查找表型预失真器，用于通过使用功率放大器输入信号和输出信号之间的差分信号作为参考信号来读出失真补偿数据; 其中N个输入侧可变频带信号提取器从输入信号中提取N个频带中的发送信号，N个输出侧可变频带信号提取器从功率放大器的输出端提取N个频带中的信号，并且N个差分检测器检测N个频带分别在输入侧和输出侧检测到的信号作为用于从N个查找表读出N个补偿数据的N个参考信号，将N个补偿数据相加到N个频带中的发送信号，并将N个加法结果被组合以产生预失真器的输出。

19. 发明授权

US08184739B2 Power series digital predistorter and control method therefor 有权
标题翻译：电力系列数字预失真器及其控制方法
公开(公告)号：US08184739B2
公开(公告)日：2012-05-22
申请号：US12782168
申请日：2010-05-18
申请人： Junya Ohkawara , Yasunori Suzuki , Shoichi Narahashi
发明人： Junya Ohkawara , Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H04K1/02
CPC分类号： H03F1/3247 , H03F1/3258
摘要： A power series digital predistorter includes a combiner which combines an output from a linear transmission path with an output from an odd-order distortion generating path, an analog-to-digital converter which converts a feedback signal from an output of a power amplifier to a digital feedback signal, an odd-order distortion vector control part which controls vector adjustment performed by an odd-order distortion vector adjusting part in the odd-order distortion generating path, a cancellation signal generating part which generates a cancellation signal from an input transmission signal, a combiner which is inserted in a feedback signal path and which combines the cancellation signal with a signal from the feedback signal path, and a cancellation signal control part which controls the cancellation signal generating part so that the cancellation signal suppresses a main signal component in the feedback signal at the combiner.
摘要翻译：功率系列数字预失真器包括组合器，其将来自线性传输路径的输出与来自奇数阶失真产生路径的输出组合，模数转换器，其将来自功率放大器的输出的反馈信号转换为数字反馈信号，奇数失真矢量控制部，其控制由奇数失真生成路径中的奇数阶失真矢量调整部执行的矢量调整;消除信号生成部，其从输入的发送信号生成消除信号，组合器，其插入在反馈信号路径中并将抵消信号与来自反馈信号路径的信号组合;以及消除信号控制部分，其控制消除信号产生部分，使得抵消信号抑制主信号分量组合器的反馈信号。

20. 发明授权

US07907678B2 Power series predistorter and control method thereof 失效
标题翻译：电力系列预失真器及其控制方法
公开(公告)号：US07907678B2
公开(公告)日：2011-03-15
申请号：US11434068
申请日：2006-05-16
申请人： Shinji Mizuta , Yasunori Suzuki , Shoichi Narahashi
发明人： Shinji Mizuta , Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H04L27/00 , H04L25/03 , H04B1/04 , H03F1/26 , H03F1/00
CPC分类号： H03F1/3258
摘要： In a distortion generation path of a power series predistorter, a frequency characteristic compensator that adjusts the frequency characteristic of a distortion component is provided in series with an odd-order distortion generator. The output of a power amplifier is divided to obtain an output signal of the power amplifier, the output signal of the power amplifier is down-converted by a down converter, and a distortion detector detects a distortion component in the down-converted signal of base band. The frequency characteristic of the distortion component is split into windows each having a band width of Δf by a distortion component frequency characteristic splitter, and the power of the distortion component in each window is detected. Based on the detected power, the frequency characteristic compensator adjusts a part of the frequency characteristic of the distortion component associated with each window.
摘要翻译：在功率系列预失真器的失真产生路径中，与奇数失真发生器串联地提供调整失真分量的频率特性的频率特性补偿器。功率放大器的输出被分割以获得功率放大器的输出信号，功率放大器的输出信号由下变频器下变频，并且失真检测器检测基极的下变频信号中的失真分量带。通过失真分量频率特性分离器将失真分量的频率特性分割成具有＆Dgr; f的带宽的窗口，并且检测每个窗口中的失真分量的功率。基于检测到的功率，频率特性补偿器调整与每个窗口相关联的失真分量的频率特性的一部分。

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