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1. 发明授权

US08594231B2 Power series digital predistorter and distortion compensation control method therefor 有权
标题翻译：电力系列数字预失真器和失真补偿控制方法
公开(公告)号：US08594231B2
公开(公告)日：2013-11-26
申请号：US12868063
申请日：2010-08-25
申请人： Junya Ohkawara , Yasunori Suzuki , Shoichi Narahashi
发明人： Junya Ohkawara , Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H04K1/02 , H04L25/49
CPC分类号： H03F1/3247 , H03F1/3294
摘要： A power series digital predistorter and a distortion compensation control method for the power series digital predistorter are capable of adjusting the coefficients of a frequency characteristic compensator at high speed. A controller in the power series digital predistorter collectively sets adjustment amounts for the phases in bands in an N-th order frequency characteristic compensator; collectively sets adjustment amounts for the amplitudes in the bands in the N-th order frequency characteristic compensator; determines whether an index indicating the degree of cancellation of a distortion component generated in a power amplifier satisfies a preset condition; and, if the index does not satisfy the condition, performs control such that the adjustment amounts for the phases and the adjustment amounts for the amplitudes are set again.
摘要翻译：功率系列数字预失真器和功率级数字预失真器的失真补偿控制方法能够高速调整频率特性补偿器的系数。功率系列数字预失真器中的控制器共同设定N阶频率特性补偿器中的频带中的相位的调整量; 共同设定N阶频率特性补偿器中的频带中的振幅的调整量; 确定指示在功率放大器中产生的失真分量的消除程度的指标是否满足预设条件; 并且如果索引不满足条件，则进行控制，使得相位的调整量和振幅的调整量再次被设定。

2. 发明授权

US07634238B2 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：US07634238B2
公开(公告)日：2009-12-15
申请号：US11444494
申请日：2006-06-01
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。

3. 发明授权

US07602241B2 Multiband Doherty amplifier 有权
标题翻译：多频道多赫蒂放大器
公开(公告)号：US07602241B2
公开(公告)日：2009-10-13
申请号：US11763898
申请日：2007-06-15
申请人： Yasunori Suzuki , Shoichi Narahashi
发明人： Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H03F3/68
CPC分类号： H03F3/602 , H03F1/0288 , H03F2200/111 , H03F2200/451 , H03F2200/543
摘要： A multiband Doherty amplifier having a configuration including a divider which divides an input signal into two, a carrier amplifier which amplifies one of the divided signals, a delay element which delays the other divided signal, a peak amplifier which amplifies the output signal of the delay element, an impedance converter which is connected to an output port of the carrier amplifier and performs predetermined impedance conversion and a combiner which combines the output signals of the peak amplifier and the impedance converter, wherein the electric length of the delay element is the same as the electric length of the impedance converter and the impedance converter has N (N≧2) cascade-connected impedance conversion transmission lines and performs substantially the same impedance conversion at each of the N frequencies.
摘要翻译：一种具有包括将输入信号分为两个的分频器的配置的多频带多赫迪放大器，放大一个分频信号的载波放大器，延迟其它分频信号的延迟元件，放大延迟的输出信号的峰值放大器元件，阻抗转换器，其连接到载波放大器的输出端口并执行预定的阻抗转换，以及组合器，其组合峰值放大器和阻抗转换器的输出信号，其中延迟元件的电长度与阻抗变换器和阻抗转换器的电长度具有N（N> = 2）级联连接的阻抗转换传输线，并且在每个N个频率上执行基本相同的阻抗转换。

4. 发明授权

US07336128B2 Feed forward amplifier for multiple frequency bands 失效
标题翻译：前馈放大器用于多个频段
公开(公告)号：US07336128B2
公开(公告)日：2008-02-26
申请号：US11445183
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： H03F1/3229
摘要： The present invention has for its object to provide, in an environment where plural radio systems coexist, a feed forward amplifier for multiple frequency bands, capable of adaptively selecting the frequency band which is used.The feed forward amplifier of the present invention comprises a distortion detection circuit and a distortion elimination circuit and has first and second variable frequency band extractors 25a and 25b provided in series with respective vector adjustment paths 21a and 21b. Also, the feed forward amplifier comprises a frequency band controller which varies the frequency band of variable frequency band extractors 25a and 25b and has been designed, by changing the frequency band of first and second variable frequency band extractors 25a and 25b in response to a frequency switching request from the outside, to be able to adaptively control the frequency band in which distortion is compensated.
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所使用的频带的多个频带的前馈放大器。本发明的前馈放大器包括失真检测电路和失真消除电路，并且具有与各个矢量调节路径21a和21b串联设置的第一和第二可变频带提取器25a和25b。此外，前馈放大器包括频带控制器，其改变可变频带提取器25a和25b的频带，并且已经通过改变第一和第二可变频带提取器25a和25b的频带来设计响应来自外部的频率切换请求，能够自适应地控制失真被补偿的频带。

5. 发明申请

US20060088124A1 Digital predistorter and predistortion method therefor 失效
标题翻译：数字预失真器和预失真方法
公开(公告)号：US20060088124A1
公开(公告)日：2006-04-27
申请号：US11247267
申请日：2005-10-12
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： H04B1/0475 , H03F1/3241 , H03F1/3247 , H03F1/3282 , H04B2001/0425
摘要： A predistorter includes: a divider that divides an input signal and supplies the divided input signal to a linear transmission path and a distortion generating path; a (2k−1)th-order distortion generator that raises the signal supplied to the distortion generating path to the (2k−1)th power to generate a distortion component; a vector adjuster that adjusts the amplitude and phase of the output of the (2k−1)th-order distortion generator; and an adder that sums up the output of the vector adjuster and the output of the linear transmission path to generate a predistorted signal r(t), in which the (2k−1)th-order distortion generator comprises: a (2k−1)th-order multiplier (27B4) that raises the divided signal to the (2k−1)th power; a lower-than-(2k−1)th-order multiplier (27B3, 27B2, 27B1) that raises the divided signal to the 5th, 3rd and 1st power, respectively; a vector adjuster (27C3, 27C2, 27C1) that adjusts the amplitude and phase of the output of the lower-than-(2k−1)th-order multiplier; and an adder (27D) that sums up the output of the vector adjuster and the output of the (2k−1)th-order multiplier.
摘要翻译：预失真器包括：除法器，其分割输入信号并将分割的输入信号提供给线性传输路径和失真产生路径; （2k-1）th阶失真发生器，其将提供给失真产生路径的信号提升到（2k-1）个功率以产生失真分量; 矢量调节器，其调整（2k-1）级失真发生器的输出的幅度和相位; 以及加法器，其将向量调整器的输出和线性传输路径的输出相加以生成预失真信号r（t），其中（2k-1）阶失真发生器包括：（2k-1））三阶乘法器（27B 4），其将分频信号提升到（2k-1）功率; 分别将分频信号提升到第5，第3和第1功率的低于（2k-1）的三阶乘法器（27B 3，27 B 2，27 B 1）调整低于（2k-1）级乘法器的输出的幅度和相位的矢量调节器（27C3,27C2,27C1）。以及将向量调整器的输出和（2k-1）级乘法器的输出相加的加法器（27D）。

6. 发明授权

US06208204B1 Feedforward amplifier 有权
标题翻译：前馈放大器
公开(公告)号：US06208204B1
公开(公告)日：2001-03-27
申请号：US09460707
申请日：1999-12-14
申请人： Yasunori Suzuki , Toshio Nojima , Shoichi Narahashi
发明人： Yasunori Suzuki , Toshio Nojima , Shoichi Narahashi
IPC分类号： H03F366
CPC分类号： H03F1/3229
摘要： In the balance adjustment using a pilot signal in a distortion detector and a distortion canceller of a feed-forward amplifier for amplifying a CDMA transmission signal, a pilot code is spread by a long code different from that of the CDMA transmission signal to obtain the pilot signal. The pilot signal is converted to a signal of the transmission frequency band, and the converted signal is injected into the transmission signal at the input side of the amplifier. The pilot signal frequency band is detected from the output of an auxiliary amplifier of the distortion canceller and converted to the base band, thereafter being despread to detect the pilot signal (code).
摘要翻译：在使用失真检测器中的导频信号的平衡调整和用于放大CDMA发送信号的前馈放大器的失真消除器的情况下，导频码以与CDMA发送信号不同的长码进行扩频，以获得导频信号。将导频信号转换为发送频带的信号，并将转换的信号注入放大器的输入侧的发送信号。从失真消除器的辅助放大器的输出检测导频信号频带，并将其转换为基带，之后被解扩以检测导频信号（代码）。

7. 发明授权

US07948311B2 Power series predistorter and control method thereof 有权
标题翻译：电力系列预失真器及其控制方法
公开(公告)号：US07948311B2
公开(公告)日：2011-05-24
申请号：US12555420
申请日：2009-09-08
申请人： Yasunori Suzuki , Shoichi Narahashi , Junya Ohkawara
发明人： Yasunori Suzuki , Shoichi Narahashi , Junya Ohkawara
IPC分类号： H03F1/26
CPC分类号： H03F1/3247 , H03F1/3258
摘要： A power series predistorter of the present invention includes a delay path for delaying a signal, a distortion generation path having an N-th order distortion generator and a vector adjuster, a divider for dividing an input signal between the delay path and the distortion generation path, a combiner for combining the output signal of the delay path and the output signal of the distortion generation path, and a controller for controlling the vector adjuster. The controller includes a setting unit, a distortion component measurement unit, a minimum condition calculation unit, and a recording unit. The setting unit specifies the phase or amplitude value of the vector adjuster. The distortion component measurement unit measures the distortion component of a power amplifier. The minimum condition calculation unit obtains a phase or amplitude value that minimizes the distortion component by function approximation, using the magnitude of the distortion components corresponding to three or more phase or amplitude values specified for sampling by the setting unit.
摘要翻译：本发明的功率系列预失真器包括用于延迟信号的延迟路径，具有N阶失真发生器和向量调整器的失真产生路径，用于对延迟路径和失真产生路径之间的输入信号进行分频的分频器，用于组合延迟路径的输出信号和失真产生路径的输出信号的组合器，以及用于控制矢量调节器的控制器。控制器包括设置单元，失真分量测量单元，最小条件计算单元和记录单元。设定单位指定矢量调节器的相位或幅度值。失真分量测量单元测量功率放大器的失真分量。最小条件计算单元使用通过设置单元进行采样指定的三个或更多个相位或幅度值的对应于失真分量的幅度，通过函数近似获得使失真分量最小化的相位或幅度值。

8. 发明授权

US07902922B2 Feedforward amplifier and control method thereof 有权
标题翻译：前馈放大器及其控制方法
公开(公告)号：US07902922B2
公开(公告)日：2011-03-08
申请号：US12372969
申请日：2009-02-18
申请人： Yasunori Suzuki , Shoichi Narahashi
发明人： Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H03F1/00
CPC分类号： H03F1/3229 , H03F1/0261 , H03F3/24 , H03F2200/18 , H03F2200/451
摘要： In a feedforward amplifier (200) including a signal cancellation circuit (10) and a distortion eliminating circuit (20), a harmonic reaction amplifier (130) is used as a main amplifier of the signal cancellation circuit. A controller (43) obtains an adjacent channel leakage power ratio (ACLR) and a power efficiency from an output of the feedforward amplifier (200) and controls the gate bias voltages of two transistors (33A and 33B) of the harmonic reaction amplifier (130) to maximize the power efficiency under the condition that the ACLR is less than or equal to a reference value.
摘要翻译：在包括信号消除电路（10）和失真消除电路（20）的前馈放大器（200）中，使用谐波反作用放大器（130）作为信号消除电路的主放大器。控制器（43）从前馈放大器（200）的输出端获得相邻信道泄漏功率比（ACLR）和功率效率，并控制谐波反应放大器（130）的两个晶体管（33A和33B）的栅极偏置电压）以在ACLR小于或等于参考值的条件下最大化功率效率。

9. 发明申请

US20110050339A1 POWER SERIES DIGITAL PREDISTORTER AND DISTORTION COMPENSATION CONTROL METHOD THEREFOR 有权
标题翻译：电力系列数字预测器及其失真补偿控制方法
公开(公告)号：US20110050339A1
公开(公告)日：2011-03-03
申请号：US12868063
申请日：2010-08-25
申请人： Junya OHKAWARA , Yasunori Suzuki , Shoichi Narahashi
发明人： Junya OHKAWARA , Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H03F1/26
CPC分类号： H03F1/3247 , H03F1/3294
摘要： A power series digital predistorter and a distortion compensation control method for the power series digital predistorter are capable of adjusting the coefficients of a frequency characteristic compensator at high speed. A controller in the power series digital predistorter collectively sets adjustment amounts for the phases in bands in an N-th order frequency characteristic compensator; collectively sets adjustment amounts for the amplitudes in the bands in the N-th order frequency characteristic compensator; determines whether an index indicating the degree of cancellation of a distortion component generated in a power amplifier satisfies a preset condition; and, if the index does not satisfy the condition, performs control such that the adjustment amounts for the phases and the adjustment amounts for the amplitudes are set again.
摘要翻译：功率系列数字预失真器和功率级数字预失真器的失真补偿控制方法能够高速调整频率特性补偿器的系数。功率系列数字预失真器中的控制器共同设定N阶频率特性补偿器中的频带中的相位的调整量; 共同设定N阶频率特性补偿器中的频带中的振幅的调整量; 确定指示在功率放大器中产生的失真分量的消除程度的指标是否满足预设条件; 并且如果索引不满足条件，则进行控制，使得相位的调整量和振幅的调整量再次被设定。

10. 发明申请

US20100295612A1 POWER SERIES DIGITAL PREDISTORTER AND CONTROL METHOD THEREFOR 有权
标题翻译：电力系列数字预测器及其控制方法
公开(公告)号：US20100295612A1
公开(公告)日：2010-11-25
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： H03F1/26
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。

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