公开(公告)号：US06856196B2

公开(公告)日：2005-02-15

申请号：US10600594

申请日：2003-06-23

申请人： Yoichi Okubo ,  Kiyoshi Funada ,  Yasuo Sera ,  Masaki Suto ,  Masato Horaguchi ,  Kazuyoshi Sato ,  Toshio Takada ,  Tetsuhiko Miyatani ,  Naoki Hongo

发明人： Yoichi Okubo ,  Kiyoshi Funada ,  Yasuo Sera ,  Masaki Suto ,  Masato Horaguchi ,  Kazuyoshi Sato ,  Toshio Takada ,  Tetsuhiko Miyatani ,  Naoki Hongo

IPC分类号： H03F1/32 ,  H04B1/04 ,  H03G3/20 ,  H03F1/26

CPC分类号： H03F1/3247 ,  H03F1/3282 ,  H03F2200/102

摘要： A distortion compensator that compensates for distortion arising in a main amplifier 10 that amplifies a signal effectively compensates for third order distortion which is unbalanced between the higher frequency band and lower frequency band. An amplitude detector 3 detects the level of a signal subject to amplification and a signal level change direction detection means 7 detects the direction of change in the level of the signal. A signal level change control means 4-8 stores the correspondence between the signal level and the mode of changing the signal in order to compensate for distortion for when the direction of change in the signal level is positive and when it is negative, and controls a signal change means 9 so that the amplitude and phase of the signal is changed in a mode of changing the signal corresponding to the detected direction of change in the signal level and the detected signal level. A signal change control content updating means 11-13 updates the content of this correspondence so that the distortion contained in the signal after amplification is reduced.

摘要翻译： 补偿放大信号的主放大器10中出现的失真的失真补偿器有效地补偿在较高频带和较低频带之间不平衡的三阶失真。 振幅检测器3检测经放大的信号的电平，信号电平变化方向检测装置7检测信号电平的变化方向。 信号电平变化控制装置4-8存储信号电平和改变信号的模式之间的对应关系，以便当信号电平的变化方向为正时和当它为负时补偿失真，并且控制一个 信号改变装置9，使得信号的幅度和相位在改变与检测到的信号电平方向和检测信号电平相对应的信号的模式下改变。 信号改变控制内容更新装置11-13更新该对应的内容，使得放大后的信号中包含的失真减少。

公开(公告)号：US06931239B2

公开(公告)日：2005-08-16

申请号：US10205563

申请日：2002-07-26

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

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

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

CPC分类号： H03G11/04 ,  H04L27/2623

摘要： 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.

摘要翻译： 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：US07142615B2

公开(公告)日：2006-11-28

申请号：US10222783

申请日：2002-08-19

申请人： Naoki Hongo ,  Yoichi Okubo ,  Masaki Suto ,  Masato Horaguchi ,  Toshio Takada

发明人： Naoki Hongo ,  Yoichi Okubo ,  Masaki Suto ,  Masato Horaguchi ,  Toshio Takada

IPC分类号： H04L25/03 ,  H04B1/04

CPC分类号： H03F1/3252 ,  H03F1/3247 ,  H04L5/06

摘要： A distortion compensator for compensating for distortion produced in an amplifier that amplifies a signal includes a signal level detector for detecting a level of a signal to be amplified and a distortion compensator for conducting distortion compensation based on the detection result separately for each frequency band signal of multiple frequency band signals contained in the signal to be amplified. The distortion compensator improves distortion compensation performance by reducing the effect of frequency characteristics that restrict the distortion compensation performance limit.

摘要翻译： 用于补偿放大信号的放大器中产生的失真的失真补偿器包括用于检测待放大信号的电平的信号电平检测器和用于对每个频带信号分别进行失真补偿的失真补偿器 包含在要放大的信号中的多个频带信号。 失真补偿器通过减少限制失真补偿性能极限的频率特性的影响来提高失真补偿性能。

公开(公告)号：US06809588B2

公开(公告)日：2004-10-26

申请号：US10253972

申请日：2002-09-25

申请人： Toshio Takada ,  Yoichi Okubo ,  Masaki Suto ,  Masato Horaguchi ,  Naoki Hongo

发明人： Toshio Takada ,  Yoichi Okubo ,  Masaki Suto ,  Masato Horaguchi ,  Naoki Hongo

IPC分类号： H03F126

CPC分类号： H03F1/3282

摘要： A distortion compensation circuit reduces an unbalance between higher and lower 3rd order distortions, the distortions being generated by an amplifier which amplifies an input signal having at least two frequency components. Amplitude modulation means, which includes an amplitude detector, an amplitude circuit, a phase circuit and another amplitude circuit, generates sideband signals corresponding to an instantaneous phase difference between the higher and lower 3rd order distortions, such that distortions generated by the amplifier can be cancelled. Further, sideband signal generating means, which includes an amplitude circuit, a delay circuit, an AM modulator, another amplitude circuit, another delay circuit and a PM modulator, performs AM and PM on the input signal to thereby generate sideband signals, such that distortions generated by the amplifier can be cancelled.

摘要翻译： 失真补偿电路减少了较高和较低三阶失真之间的不平衡，失真是由放大具有至少两个频率分量的输入信号的放大器产生的。 幅度调制装置包括振幅检测器，振幅电路，相位电路和另一幅度电路，产生对应于较高和较低三阶失真之间的瞬时相位差的边带信号，从而可以消除由放大器产生的失真 。 此外，包括幅度电路，延迟电路，AM调制器，另一幅度电路，另一延迟电路和PM调制器的边带信号发生装置在输入信号上执行AM和PM，从而产生边带信号，使得失真 由放大器产生的可以取消。

公开(公告)号：US06741128B2

公开(公告)日：2004-05-25

申请号：US10131131

申请日：2002-04-25

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

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

IPC分类号： H03F126

CPC分类号： H03F1/3247 ,  H03F1/3205 ,  H03F1/3282 ,  H03F1/3288 ,  H03F2200/102 ,  H03F2201/3206 ,  H03F2201/3233

摘要： 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.

摘要翻译： 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：US06753728B2

公开(公告)日：2004-06-22

申请号：US10153630

申请日：2002-05-24

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

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

IPC分类号： H03F126

CPC分类号： H03F1/3229 ,  H03F1/32 ,  H03F1/3247 ,  H03F2200/102 ,  H03F2201/3206

摘要： A distortion reducing circuit compensates an upper side third-order distortion and a lower side third-order distortion produced by an amplifier for amplifying a fundamental signal including multiple frequency components. The distortion reducing circuit includes a second harmonic reflection coefficient regulation circuit, installed at an output side of the amplifier, for regulating reflection coefficients for multiple frequency components included in a second harmonic signal to have a constant value.

摘要翻译： 失真减小电路补偿由用于放大包括多个频率分量的基本信号的放大器产生的上侧三阶失真和下侧三次失真。 失真减小电路包括安装在放大器的输出侧的二次谐波反射系数调节电路，用于调节包括​​在二次谐波信号中的多个频率分量的反射系数以具有恒定值。

公开(公告)号：US06925106B2

公开(公告)日：2005-08-02

申请号：US09880958

申请日：2001-06-15

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

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

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

CPC分类号： H03F1/3247 ,  H03F1/3282 ,  H03F2200/102 ,  H03F2201/3233

摘要： 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.

摘要翻译： 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：US06714073B2

公开(公告)日：2004-03-30

申请号：US10303800

申请日：2002-11-26

申请人： Masaki Suto ,  Yoichi Okubo ,  Toshio Takada ,  Naoki Hongo

发明人： Masaki Suto ,  Yoichi Okubo ,  Toshio Takada ,  Naoki Hongo

IPC分类号： H03F126

CPC分类号： H03F1/3247 ,  H03F1/3282 ,  H03F1/3288

摘要： A distortion compensation amplification apparatus for compensating distortion generated while amplifying a signal, includes a distributor for distributing an input signal to provide a first and a second outputs, a first delay means for delaying the first output through the use of a surface acoustic wave element, a compensation value generation circuit, responsive to the second output, for determining amplitude and phase compensation values to be used in compensating the distortion, a second delay means for delaying the compensation values according to a delay time of the first delay means, and a predistortion circuit for compensating the output of the first delay means in response to the delayed compensation values. And the second delay means includes at least one type of circuit among the type of an analog delay circuit and a digital delay circuit.

摘要翻译： 一种用于补偿放大信号时产生的失真的失真补偿放大装置，包括用于分配输入信号以提供第一和第二输出的分配器，用于通过使用表面声波元件延迟第一输出的第一延迟装置， 响应于所述第二输出的补偿值生成电路，用于确定用于补偿所述失真的幅度和相位补偿值;第二延迟装置，用于根据所述第一延迟装置的延迟时间来延迟所述补偿值;以及预失真 电路，用于响应延迟的补偿值补偿第一延迟装置的输出。 并且第二延迟装置包括模拟延迟电路的类型和数字延迟电路中的至少一种类型的电路。

公开(公告)号：US07212584B2

公开(公告)日：2007-05-01

申请号：US10624652

申请日：2003-07-23

申请人： Naoki Hongo ,  Masaki Suto ,  Toshio Takada ,  Hidefumi Ito ,  Shuhei Miura

发明人： Naoki Hongo ,  Masaki Suto ,  Toshio Takada ,  Hidefumi Ito ,  Shuhei Miura

IPC分类号： H04K1/02 ,  H04L25/03

CPC分类号： H03F1/02 ,  H03F1/3247 ,  H03F2200/105 ,  H03F2201/3233

摘要： A distortion compensator compensates for distortion arising in an amplifier that amplifies a signal with improved efficiency. The distortion compensator includes a signal level detector which detects the level of a signal to be amplified by an amplifier, a distortion compensation execution unit which executes distortion compensation on the signal to be amplified according to a mode of distortion compensation corresponding to the signal level detected by the signal level and a correspondence between signal levels and distortion compensation control values as pairs, a distortion compensation control value correspondence updater which updates the correspondence between the signal levels and the distortion compensation control values used in the execution of distortion compensation, and a distortion compensation control value number controller which controls the values of stipulated parameters.

摘要翻译： 失真补偿器补偿放大器中出现的失真，放大器以提高效率放大信号。 失真补偿器包括：信号电平检测器，其检测由放大器放大的信号的电平;失真补偿执行单元，根据与检测到的信号电平相对应的失真补偿的模式，对待放大的信号执行失真补偿 通过信号电平和信号电平与失真补偿控制值之间的对应关系，失真补偿控制值对应更新器更新信号电平与执行失真补偿时使用的失真补偿控制值之间的对应关系，以及失真 补偿控制值控制器，用于控制规定参数的值。

公开(公告)号：US20130010848A1

公开(公告)日：2013-01-10

申请号：US13635841

申请日：2011-03-17

申请人： Junzoh Shimizu ,  Minoru Fujishima ,  Toshio Takada

发明人： Junzoh Shimizu ,  Minoru Fujishima ,  Toshio Takada

IPC分类号： H04L27/00 ,  H04B1/04 ,  H04B1/16 ,  H04B15/00 ,  H04B1/38

CPC分类号： H04L27/04 ,  G09G5/006 ,  G09G2370/045 ,  G09G2370/12 ,  G09G2370/16 ,  G09G2370/22 ,  H04B1/28 ,  H04L5/06 ,  H04N21/43637

摘要： A wireless transmission system includes a wireless HDMI transmitter and a wireless HDMI receiver. The wireless HDMI transmitter includes a carrier oscillator provided for each channel of an HDMI transmission path to output a carrier signal in a millimeter band, an OOK modulator provided for each carrier oscillator to perform on-off keying modulation on a carrier signal outputted by its corresponding carrier oscillator, and an input circuit provided for each channel of the HDMI transmission path to input a digital signal outputted by a source device to the OOK modulator.

摘要翻译： 无线传输系统包括无线HDMI发射机和无线HDMI接收机。 无线HDMI发射机包括为HDMI传输路径的每个信道提供的载波振荡器，以输出毫米波段中的载波信号，为每个载波振荡器提供的OOK调制器，以对由其相应的载波信号输出的载波信号执行开 - 关键控调制 载波振荡器和为HDMI传输路径的每个信道提供的输入电路，以将源装置输出的数字信号输入到OOK调制器。