公开(公告)号：US20100171553A1

公开(公告)日：2010-07-08

申请号：US12644833

申请日：2009-12-22

Applicant: Yoichi Okubo ,  Manabu Nakamura ,  Junya Dosaka ,  Yasuhiro Takeda ,  Taizo Ito ,  Naoki Hongo ,  Taizo Yamawaki ,  Takashi Kawamoto ,  Akira Maeki

Inventor： Yoichi Okubo ,  Manabu Nakamura ,  Junya Dosaka ,  Yasuhiro Takeda ,  Taizo Ito ,  Naoki Hongo ,  Taizo Yamawaki ,  Takashi Kawamoto ,  Akira Maeki

IPC: H03G1/00

CPC classification number: H03F1/0227 ,  H03F3/19 ,  H03F2200/451 ,  H03F2200/462

Abstract: A power circuit used for an amplifier, which includes an amplifier provided with a linear amplifier serving as a voltage source, a DC/DC converter serving as a current source, a hysteresis comparator controlling the DC/DC converter, and a current detector detecting output current from the linear amplifier to output the detected output current to the hysteresis comparator; and a switching restricting means for restricting a switching interval in the DC/DC converter such that the switching interval is not equal to or less than a constant time or is not shorter than the constant time.

Abstract translation: 用于放大器的电源电路，其包括放大器，该放大器设置有用作电压源的线性放大器，用作电流源的DC / DC转换器，控制DC / DC转换器的滞环比较器以及电流检测器检测输出 电流从线性放大器输出检测输出电流到滞后比较器; 以及切换限制装置，用于限制DC / DC转换器中的切换间隔，使得切换间隔不等于或小于恒定时间或不短于恒定时间。

公开(公告)号：US07679439B2

公开(公告)日：2010-03-16

申请号：US12372166

申请日：2009-02-17

Applicant: Naoki Hongo

Inventor： Naoki Hongo

IPC: H03F1/26

CPC classification number: H03F1/3294 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3282 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/207 ,  H03F2200/336 ,  H03F2201/3224 ,  H03F2201/3233

Abstract: A predistorter for correcting distortion caused by a memory effect in amplifying a signal by an amplifier is provided. In the memory PD 2 provided to the predistorter, the level detection means 21 detects the level of the signal, the coefficient output means 22 outputs the coefficient corresponding to the detected level, the delay means 23 delays the output coefficient, the difference detection means 24 detects the difference between the output coefficient and the delayed coefficient, the multiplication means 25 multiplies the detected difference with the signal, and the combination means 26 combines the result of the multiplication and the signal. Thus, the result of the combination is output to the amplifier.

公开(公告)号：US20090160550A1

公开(公告)日：2009-06-25

申请号：US12372166

申请日：2009-02-17

Applicant: Naoki HONGO

Inventor： Naoki HONGO

IPC: H03F1/26

CPC classification number: H03F1/3294 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3282 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/207 ,  H03F2200/336 ,  H03F2201/3224 ,  H03F2201/3233

Abstract: A predistorter for correcting distortion caused by a memory effect in amplifying a signal by an amplifier is provided. In the memory PD 2 provided to the predistorter, the level detection means 21 detects the level of the signal, the coefficient output means 22 outputs the coefficient corresponding to the detected level, the delay means 23 delays the output coefficient, the difference detection means 24 detects the difference between the output coefficient and the delayed coefficient, the multiplication means 25 multiplies the detected difference with the signal, and the combination means 26 combines the result of the multiplication and the signal. Thus, the result of the combination is output to the amplifier.

Abstract translation: 提供了一种用于校正由放大器放大信号时由存储器效应引起的失真的预失真器。 在提供给预失真器的存储器PD2中，电平检测装置21检测信号电平，系数输出装置22输出与检测电平对应的系数，延迟装置23延迟输出系数，差分检测装置24 检测输出系数和延迟系数之间的差异，乘法装置25将检测到的差与信号相乘，组合装置26组合乘法和信号的结果。 因此，组合的结果被输出到放大器。

公开(公告)号：US06931239B2

公开(公告)日：2005-08-16

申请号：US10205563

申请日：2002-07-26

Applicant: Naoki Hongo ,  Yoichi Okubo ,  Masaki Suto ,  Masato Horaguchi ,  Toshio Takada ,  Tetsuhiko Miyatani

Inventor： Naoki Hongo ,  Yoichi Okubo ,  Masaki Suto ,  Masato Horaguchi ,  Toshio Takada ,  Tetsuhiko Miyatani

IPC: H03G11/04 ,  H04L27/26 ,  H04B1/02 ,  H04B1/04

CPC classification number: H03G11/04 ,  H04L27/2623

Abstract: A peak limiter for use in a system for amplifying a multi-carrier signal receives a baseband signal of each carrier of the multi-carrier signal. The multi-carrier signal is computationally estimated to have carriers combined in an RF band, and obtains power information of the multi-carrier signal to limit an amplitude of the baseband signal based on the power information of the estimated multi-carrier signal to thereby provide peak-limited baseband signals. Thus, the distortion generated by performing the unnecessary peak limitation can be effectively prevented to thereby improve the reliability of the entire system.

Abstract translation: 用于放大多载波信号的系统中的峰值限制器接收多载波信号的每个载波的基带信号。 计算地估计多载波信号使载波组合在RF频带中，并且基于估计的多载波信号的功率信息获得多载波信号的功率信息以限制基带信号的幅度，从而提供 峰值限制基带信号。 因此，可以有效地防止通过执行不必要的峰值限制而产生的失真，从而提高整个系统的可靠性。

公开(公告)号：US06925106B2

公开(公告)日：2005-08-02

申请号：US09880958

申请日：2001-06-15

Applicant: Masato Horaguchi ,  Naoki Hongo ,  Takashi Uchida ,  Masaki Suto ,  Toshio Takada

Inventor： Masato Horaguchi ,  Naoki Hongo ,  Takashi Uchida ,  Masaki Suto ,  Toshio Takada

IPC: H03F1/32 ,  H04B1/04 ,  H04B1/707 ,  H04J13/00 ,  H04L27/30

CPC classification number: H03F1/3247 ,  H03F1/3282 ,  H03F2200/102 ,  H03F2201/3233

Abstract: To update the control value to a value of higher precision in a predistortion type distortion compensation apparatus for compensating the distortion occurring in an amplifier for amplifying an input signal by the control using a control value corresponding to the level of the input signal.Distortion generating means (1) generates distortion in an input signal, input signal level detecting means (3) detects the level of the input signal, distortion control means (4) controls the distortion generated by the distortion generating means 1 by using a control value corresponding to the level of the detected input signal, distortion component level detecting means (7) detects the level of distortion component contained in the amplified signal issued from the amplifier (2), integrating means K1 to KN integrate the level of the distortion component detected at every level of the detected input signal, and control value updating means (10) updates the control value corresponding to the level so that the integration result at every level of the input signal may be small.

Abstract translation: 在预失真型失真补偿装置中，通过使用与输入信号的电平相对应的控制值进行控制来补偿放大器放大输入信号的失真的预失真型失真补偿装置，将控制值更新为更高的精度值。 失真产生装置（1）在输入信号中产生失真，输入信号电平检测装置（3）检测输入信号的电平，失真控制装置（4）通过使用控制值来控制失真发生装置1产生的失真 对应于检测到的输入信号的电平，失真分量电平检测装置（7）检测从放大器（2）发出的放大信号中包含的失真分量的电平，积分装置K 1至K N将失真分量 在检测到的输入信号的各个级别检测到，并且控制值更新装置（10）更新与电平相对应的控制值，使得输入信号的每个级别的积分结果可能较小。

公开(公告)号：US06741128B2

公开(公告)日：2004-05-25

申请号：US10131131

申请日：2002-04-25

Applicant: Yoichi Okubo ,  Kiyoshi Funada ,  Masaki Suto ,  Masato Horaguchi ,  Toshio Takada ,  Naoki Hongo

Inventor： Yoichi Okubo ,  Kiyoshi Funada ,  Masaki Suto ,  Masato Horaguchi ,  Toshio Takada ,  Naoki Hongo

IPC: H03F126

CPC classification number: H03F1/3247 ,  H03F1/3205 ,  H03F1/3282 ,  H03F1/3288 ,  H03F2200/102 ,  H03F2201/3206 ,  H03F2201/3233

Abstract: There is provided a distortion canceling circuit for reducing an unbalance between a higher and a lower 3rd order distortion at frequencies of (2·f2−f1) and (2·f1−f2), respectively, the distortions being generated by an amplifier which amplifies an input signal having at least two frequency components, i.e., f1 and f2. Phase modulation control means supply a control signal, which has a difference frequency of (f2−f1), to phase modulation means, the control signal being generated based on the amplified input signal outputted from the amplifier. The phase modulation means performs phase modulation on the amplified input signal based on the supplied control signal to thereby generate a higher and a lower side-band signal having frequencies of (2·f2−f1) and (2·f1−f2), respectively, each of which has an identical amplitude and a phase difference of 180° with respect to each other. The distortion canceling circuit reduces the unbalance by using the side-band signals.

Abstract translation: 提供了一种用于减小在（2.f2-f1）和（2.f1-f2）频率处的较高和较低三阶失真之间的不平衡的失真消除电路，失真是由放大器 具有至少两个频率分量的输入信号，即f1和f2。 相位调制控制装置将具有差分频率（f2-f1）的控制信号提供给相位调制装置，该控制信号是根据从放大器输出的放大输入信号产生的。 相位调制装置基于所提供的控制信号对放大的输入信号执行相位调制，从而分别产生频率为（2.f2-f1）和（2.f1-f2）的较高和较低的边带信号 ，其中的每一个具有相同的振幅和相对于彼此为180°的相位差。 失真消除电路通过使用边带信号来减少不平衡。

公开(公告)号：US20130285748A1

公开(公告)日：2013-10-31

申请号：US13979461

申请日：2012-01-12

Applicant: Naoki Hongo

Inventor： Naoki Hongo

IPC: H03G1/00

CPC classification number: H03G1/00 ,  H03F1/0222 ,  H03F1/3247 ,  H03F1/3294 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/336 ,  H03F2200/504

Abstract: To effectively control the amplitude vs. power supply voltage characteristics, for example, in an ET amplifier. An amplifying device for amplifying an input signal wherein: amplifier means (4) amplifies the input signal; amplification control means (5, 7) control the power supply voltage to the amplification means on the basis of the input signal; first detection means (14) detects the amplification factor between the input signal and a feedback signal obtained by means of a feedback of the signal that has been amplified by the amplification means; second detection means (14) detects the variance of the amplification factors for each value or range of the amplitude of the input signal; and amplification control update means (14) performs an update so as to increase the power supply voltage with respect to a value or range of amplitude that exhibits a variance in excess of a predetermined threshold value, or to reduce the power supply voltage with respect to a value or range of amplitude that exhibits a variance lower than the predetermined threshold value.

Abstract translation: 为了有效地控制幅度与电源电压特性，例如在一个ET放大器中。 一种用于放大输入信号的放大装置，其中：放大器装置（4）放大输入信号; 放大控制装置（5,7）根据输入信号控制放大装置的电源电压; 第一检测装置（14）检测输入信号与通过放大装置放大的信号的反馈获得的反馈信号之间的放大系数; 第二检测装置（14）检测每个值或输入信号的幅度范围的放大因子的方差; 并且放大控制更新装置（14）执行更新，以便相对于表现出超过预定阈值的方差的值或振幅范围增加电源电压，或者相对于 具有低于预定阈值的方差的振幅值或范围。

公开(公告)号：US08030995B2

公开(公告)日：2011-10-04

申请号：US12644833

申请日：2009-12-22

Applicant: Yoichi Okubo ,  Manabu Nakamura ,  Junya Dosaka ,  Yasuhiro Takeda ,  Taizo Ito ,  Naoki Hongo ,  Taizo Yamawaki ,  Takashi Kawamoto ,  Akira Maeki

Inventor： Yoichi Okubo ,  Manabu Nakamura ,  Junya Dosaka ,  Yasuhiro Takeda ,  Taizo Ito ,  Naoki Hongo ,  Taizo Yamawaki ,  Takashi Kawamoto ,  Akira Maeki

IPC: H03G3/00

CPC classification number: H03F1/0227 ,  H03F3/19 ,  H03F2200/451 ,  H03F2200/462

Abstract: A power circuit used for an amplifier, which includes an amplifier provided with a linear amplifier serving as a voltage source, a DC/DC converter serving as a current source, a hysteresis comparator controlling the DC/DC converter, and a current detector detecting output current from the linear amplifier to output the detected output current to the hysteresis comparator; and a switching restricting device for restricting a switching interval in the DC/DC converter such that the switching interval is not equal to or less than a constant time or is not shorter than the constant time.

Abstract translation: 用于放大器的电源电路，其包括放大器，该放大器设置有用作电压源的线性放大器，用作电流源的DC / DC转换器，控制DC / DC转换器的滞环比较器以及电流检测器检测输出 电流从线性放大器输出检测输出电流到滞后比较器; 以及用于限制DC / DC转换器中的切换间隔使得切换间隔不等于或小于恒定时间或不短于恒定时间的切换限制装置。

公开(公告)号：US07427895B1

公开(公告)日：2008-09-23

申请号：US11581418

申请日：2006-10-17

Applicant: Yoichi Okubo ,  Yasuhiro Takeda ,  Manabu Nakamura ,  Naoki Hongo ,  Masaru Adachi

Inventor： Yoichi Okubo ,  Yasuhiro Takeda ,  Manabu Nakamura ,  Naoki Hongo ,  Masaru Adachi

IPC: H03F3/68

CPC classification number: H03F1/0288 ,  H03F3/602

Abstract: A first control unit controls a bias applied to the peak amplifier to (a) make a peak amplifier operate as class C when the level of the input signal is lower than a first threshold value, to (b) make the peak amplifier operate as class AB with a second conduction angle substantially equal to a first conduction angle, when the level of the input signal is higher than a second threshold value higher than the first threshold value, and to (c) make the peak amplifier operate as class AB with a third conduction angle smaller than the first conduction angle, when the level of the input signal is not less than the first threshold value and not more than the second threshold value.

Abstract translation: 第一控制单元控制施加到峰值放大器的偏置，以便（a）当输入信号的电平低于第一阈值时使峰值放大器工作为C类，以使（b）使峰值放大器工作为类 AB，当输入信号的电平高于高于第一阈值的第二阈值时，具有基本上等于第一导通角的第二导通角，以及（c）使峰值放大器作为AB类工作，其中a 当输入信号的电平不小于第一阈值且不大于第二阈值时，第三导通角小于第一导通角。

公开(公告)号：US20080187035A1

公开(公告)日：2008-08-07

申请号：US12078507

申请日：2008-04-01

Applicant: Manabu Nakamura ,  Yasuhiro Takeda ,  Yoichi Okubo ,  Masaru Adachi ,  Naoki Hongo

Inventor： Manabu Nakamura ,  Yasuhiro Takeda ,  Yoichi Okubo ,  Masaru Adachi ,  Naoki Hongo

IPC: H04L27/01 ,  H03F1/32

CPC classification number: H03F1/32 ,  H03F1/0288 ,  H03F1/3247 ,  H03F3/245 ,  H03F2200/207

Abstract: A conventional power amplifying device has a problem that when a signal band is widened, sampling frequency for distortion detection is increased and an FFT calculation amount of a distortion compensation unit is increased, which increase a circuit size and power consumption. The present invention provides a non-linear distortion detection method and a distortion compensation amplifying device capable of suppressing increase of the circuit size and the power consumption even if the signal band is widened. A signal obtained by feeding back an output of a power amplifier is sampled by an A/D converter. An equalizer of a distortion detection unit uses an input signal d(n) of a predistorter as a reference symbol to detect an equalization error e(n) of the orthogonal demodulation signal u(n). An absolute value averaging unit outputs an absolute value of the equalization error e(n) which has been temporally averaged to E(n) as a distortion value to a control unit. According to the distortion value, the control unit adaptively controls the predistorter to perform distortion compensation.

Abstract translation: 传统的功率放大装置存在如下问题：当信号频带变宽时，失真检测的采样频率增加，并且失真补偿单元的FFT计算量增加，这增加了电路尺寸和功耗。 本发明提供即使信号频带变宽也能够抑制电路尺寸和功耗的增加的非线性失真检测方法和失真补偿放大装置。 通过反馈功率放大器的输出而获得的信号由A / D转换器采样。 失真检测单元的均衡器使用预失真器的输入信号d（n）作为参考符号来检测正交解调信号u（n）的均衡误差e（n）。 绝对值平均单元将对时间平均的均衡误差e（n）的绝对值作为失真值输出到控制单元。 根据失真值，控制单元自适应地控制预失真器进行失真补偿。