公开(公告)号：US08619905B2

公开(公告)日：2013-12-31

申请号：US12693695

申请日：2010-01-26

申请人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Kazuo Nagatani

发明人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Kazuo Nagatani

IPC分类号： H04K1/02

CPC分类号： H03F1/3247 ,  H03F1/3258 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/204 ,  H03F2200/451 ,  H03F2201/3209 ,  H03F2201/3224 ,  H03F2201/3233 ,  H04L27/368

摘要： A predistorter includes a distortion compensating unit which gives, in advance, a reverse characteristic of a characteristic of input to output of a power amplifier to a transmission signal which is to be input to the power amplifier; a distortion compensation signal generating unit which generates a distortion compensation signal indicating the reverse characteristic based on transmission data that is sample data of the transmission signal and the delayed transmission data; and a delay amount control unit which controls a delay amount of the transmission data according to an output signal of the power amplifier.

摘要翻译： 预失真器包括：失真补偿单元，其预先将功率放大器的输出的特性的反向特性赋予要输入到功率放大器的发送信号; 失真补偿信号产生单元，其基于作为发送信号的采样数据和延迟的发送数据的发送数据生成表示反向特性的失真补偿信号; 以及延迟量控制单元，其根据功率放大器的输出信号来控制发送数据的延迟量。

公开(公告)号：US08509349B2

公开(公告)日：2013-08-13

申请号：US13357504

申请日：2012-01-24

申请人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Toshio Kawasaki

发明人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Toshio Kawasaki

IPC分类号： H04B15/00

CPC分类号： H04B1/0475 ,  H03F1/3247

摘要： A transmitter, when the power changes at a certain timing, adjusts the gain for the transmission signal before the application of the distortion compensation process correspondingly to the amplitude of the transmission signal at the certain timing based on the average of the power of a transmission signal before application of the distortion compensation process, obtains a distortion compensation coefficient corresponding to the value of the power of the adjusted transmission signal from the LUT, applies the distortion compensation process to the transmission signal using the obtained distortion compensation coefficient, calculates an update for a distortion compensation coefficient corresponding to the obtained distortion compensation coefficient and stored in the LUT based on an error between the power of the transmission signal amplified by an amplifier and the power of the transmission signal before the application of the distortion compensation process, and updates the LUT using the calculated update.

摘要翻译： 发射机当功率在某一定时变化时，根据传输信号的功率的平均值，在施加失真补偿处理之前调整发送信号的增益，对应于在某个定时的发送信号的幅度 在施加失真补偿处理之前，获得与来自LUT的经调整的发送信号的功率值对应的失真补偿系数，使用所获得的失真补偿系数对发送信号应用失真补偿处理，计算更新 基于由放大器放大的发送信号的功率与施加失真补偿处理之前的发送信号的功率之间的误差，存储在LUT中的失真补偿系数对应于所获得的失真补偿系数，并且更新LUT 使用t 他计算更新。

公开(公告)号：US08452250B2

公开(公告)日：2013-05-28

申请号：US11819984

申请日：2007-06-29

申请人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani ,  Hajime Hamada ,  Tokuro Kubo

发明人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Kazuo Nagatani ,  Hajime Hamada ,  Tokuro Kubo

IPC分类号： H04B1/30

CPC分类号： H04L25/061 ,  H04L27/364

摘要： A DC offset component that occurs in a quadrature modulation system, and that is contained in a modulated transmit signal, is compensated for with good accuracy. In a DC offset compensation method according to the present invention, a DC offset correction value obtained from the transmit signal is weighted in accordance with the signal level of an input signal which is transmit data input to the quadrature modulation system, and the DC offset component contained in the transmit signal is compensated for by using the thus weighted DC offset correction value.

摘要翻译： 发生在正交调制系统中并且包含在调制的发送信号中的DC偏移分量以高精度被补偿。 在根据本发明的DC偏移补偿方法中，从发送信号获得的DC偏移校正值根据输入到正交调制系统的发送数据的输入信号的信号电平加权，并且DC偏移分量 通过使用这样加权的DC偏移校正值来补偿包含在发送信号中的发送信号。

公开(公告)号：US08270530B2

公开(公告)日：2012-09-18

申请号：US12555314

申请日：2009-09-08

申请人： Hajime Hamada ,  Hiroyoshi Ishikawa ,  Yuichi Utsunomiya ,  Kazuo Nagatani ,  Nobukazu Fudaba ,  Hideharu Shako

发明人： Hajime Hamada ,  Hiroyoshi Ishikawa ,  Yuichi Utsunomiya ,  Kazuo Nagatani ,  Nobukazu Fudaba ,  Hideharu Shako

IPC分类号： H04L25/03

CPC分类号： H03F1/3241 ,  H03F1/3258

摘要： A distortion compensating apparatus includes a processing circuit that calculates each of a plurality of series operation coefficient pairs based on a transmission signal and a feedback signal of an output from an amplifying circuit performing power amplification of the transmission signal, executes a series operation process with respect to the transmission signal based on the plurality of the series operation coefficient pairs as a distortion compensation of the transmission signal, and inputs a result of the series operation process to the amplifying circuit performing the power amplification, and a selecting unit that, on the basis of power of the transmission signal, selects the series operation process to be executed corresponding to one of the plurality of series operation coefficient pairs, or selects one of the plurality of series operation coefficient pairs to be used in the series operation process to be executed.

摘要翻译： 失真补偿装置包括：处理电路，其基于发送信号和来自执行发送信号的功率放大的放大电路的输出的反馈信号，计算多个串联运算系数对中的每一个，执行相对于 基于多个串联运算系数对的发送信号作为发送信号的失真补偿，并将串联运算处理的结果输入到执行功率放大的放大电路，以及选择单元，基于 选择与多个串联运算系数对中的一个对应的要执行的串联运算处理，或者选择要在要执行的串联运算处理中使用的多个串联运算系数对之一。

公开(公告)号：US20120098596A1

公开(公告)日：2012-04-26

申请号：US13277409

申请日：2011-10-20

申请人： Kazuo NAGATANI ,  Yuichi Utsunomiya ,  Nobukazu Fudaba ,  Hiroyoshi Ishikawa ,  Hajime Hamada

发明人： Kazuo NAGATANI ,  Yuichi Utsunomiya ,  Nobukazu Fudaba ,  Hiroyoshi Ishikawa ,  Hajime Hamada

IPC分类号： H03F1/26

CPC分类号： H03F1/3247 ,  H03F3/24 ,  H03F2201/3233

摘要： A power amplifier apparatus that includes a processor that performs a first distortion compensation processing on an input signal using a distortion compensation coefficient to obtain a first signal and an amplifier that amplifies the first signal. The processor performs a second distortion compensation processing the amplified signal using the distortion compensation coefficient to obtain a second signal and updates the distortion compensation coefficient to enable convergence between the first signal and the second signal.

摘要翻译： 一种功率放大器装置，包括处理器，其使用失真补偿系数对输入信号执行第一失真补偿处理以获得第一信号，以及放大器，其放大第一信号。 处理器使用失真补偿系数执行第二失真补偿处理放大信号以获得第二信号，并且更新失真补偿系数，以使能第一信号和第二信号之间的收敛。

公开(公告)号：US08154341B2

公开(公告)日：2012-04-10

申请号：US12335572

申请日：2008-12-16

申请人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Yuichi Utsunomiya ,  Kazuo Nagatani ,  Toru Maniwa

发明人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Yuichi Utsunomiya ,  Kazuo Nagatani ,  Toru Maniwa

IPC分类号： H03G3/20

CPC分类号： H03F1/0227

摘要： A power amplifying apparatus includes a high-speed low pass filter which inputs an envelope signal included in a transmission signal therein, a low-speed low pass filter which inputs the envelope signal therein, a determination unit which inputs the envelope signal therein and determines rising or falling of the envelope signal, a selecting unit which selects one of the high-speed low pass filter and the low-speed low pass filter according to a determined result of the determination unit, and a voltage supply unit which generates a voltage based on a signal input according to a selection by the selecting unit and supplies the voltage to a power amplifier which inputs the transmission signal therein so as to amplify a power of the transmission signal.

摘要翻译： 功率放大装置包括：高速低通滤波器，其输入包括在其中的发送信号中的包络信号;低速低通滤波器，其中输入包络信号;确定单元，其中输入包络信号并确定上升 或包围信号的下降;选择单元，其根据确定单元的确定结果选择高速低通滤波器和低速低通滤波器之一;以及电压供应单元，其基于 根据选择单元的选择输入信号，并将电压提供给输入其中的发送信号的功率放大器，以放大发送信号的功率。

公开(公告)号：US08130866B2

公开(公告)日：2012-03-06

申请号：US12411553

申请日：2009-03-26

申请人： Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

发明人： Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Yuichi Utsunomiya

IPC分类号： H04L25/03 ,  H04L25/20

CPC分类号： H04L27/2614 ,  H04L27/2623

摘要： A peak suppressing apparatus includes an amplitude limiter that limits amplitude of the transmission signal with a predetermined threshold; a peak-suppressing-signal extracting unit that extracts a peak suppressing signal by subtracting the transmission signal before the amplitude limiting from the transmission signal amplitude-limited by the amplitude limiter; a filtering unit that performs filtering so that a frequency characteristic of the peak suppressing signal extracted by the peak-suppressing-signal extracting unit becomes flat; and an adder that adds the peak suppressing signal filtered by the filtering unit to the transmission signal.

摘要翻译： 峰值抑制装置包括限幅器，其限制具有预定阈值的发送信号的振幅; 峰值抑制信号提取单元，通过从由幅度限制器限幅的发送信号中减去振幅限制之前的发送信号来提取峰值抑制信号; 滤波单元，进行滤波，使得由峰值抑制信号提取单元提取的峰值抑制信号的频率特性变得平坦; 以及将由滤波单元滤波的峰值抑制信号与发送信号相加的加法器。

公开(公告)号：US07983636B2

公开(公告)日：2011-07-19

申请号：US12642254

申请日：2009-12-18

申请人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Kazuo Nagatani ,  Yasuhito Funyu ,  Norio Tozawa ,  Tokuro Kubo

发明人： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Kazuo Nagatani ,  Yasuhito Funyu ,  Norio Tozawa ,  Tokuro Kubo

IPC分类号： H01Q11/12 ,  H04K3/00

CPC分类号： H03F1/0266 ,  H03F1/0205 ,  H03F1/0244 ,  H03F1/32 ,  H03F3/24

摘要： A bias control signal generation unit detects ON and OFF of a transmission signal input to an amplifier and having a property of a burst according to burst information. The bias control signal generation unit controls a bias voltage to be applied to an amplifier such that an idle current flowing through the amplifier can be flowing in a larger amount in a transmission OFF period, and can return to a normal level in a transmission ON period.

摘要翻译： 偏置控制信号生成单元根据突发信息检测输入到放大器的发送信号的接通和关断，并具有突发的性质。 偏置控制信号发生单元控制要施加到放大器的偏置电压，使得流过放大器的空闲电流可以在传输关闭时段内以较大的量流动，并且可以在传输开启周期中恢复到正常电平 。

公开(公告)号：US07848449B2

公开(公告)日：2010-12-07

申请号：US10568334

申请日：2004-03-31

申请人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Tokuro Kubo

发明人： Kazuo Nagatani ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Tokuro Kubo

IPC分类号： H04L25/49

CPC分类号： H04L27/364 ,  H03C3/406 ,  H04L2027/0016 ,  H04L2027/0018 ,  H04L2027/0067 ,  H04L2027/0069

摘要： In an electronic device having a circuit outputting a vector sum of two quadrature vector signals, an offset compensating device compensates the offset contained in the vector sum. The offset compensating device aims to flexibly adapt to deviation in characteristics and performances and various fluctuations, and to compensate offset stably and accurately. The offset compensating device includes a deviation monitor unit creating a vector signal by A/D-converting the aforementioned vector sum and by quadrature-demodulating it and monitoring the deviation of the DC components superposed on the vector signal, and an adaptive control unit updating the compensation vector determined in advance, based on adaptive algorithm minimizing expectation value of the product of the inner product between an increment vector and the compensation vector, and the latest deviation vector, and adding the compensation vector to an offset vector to be inputted, while being superposed on the input signal, to a circuit.

摘要翻译： 在具有输出两个正交矢量信号的向量和的电路的电子设备中，偏移补偿装置补偿矢量和中包含的偏移量。 偏移补偿装置旨在灵活适应特性，性能和各种波动的偏差，并且稳定和准确地补偿偏移。 偏移补偿装置包括：偏差监视器单元，通过对前述矢量和进行A / D转换，并对其进行正交解调并监视叠加在矢量信号上的直流分量的偏差来产生矢量信号;以及自适应控制单元， 基于自适应算法，最小化增量向量与补偿向量之间的内积乘积的最终期望值与最新偏差矢量，并将补偿向量加到要输入的偏移向量的预先确定的补偿向量，同时 叠加在输入信号上的电路。

公开(公告)号：US20100026354A1

公开(公告)日：2010-02-04

申请号：US12499270

申请日：2009-07-08

申请人： Yuichi Utsunomiya ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Kazuo Nagatani

发明人： Yuichi Utsunomiya ,  Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Kazuo Nagatani

IPC分类号： H03L7/00 ,  G01R29/02

CPC分类号： H04B1/0475 ,  H03F1/3247 ,  H03F3/24

摘要： A delay amount estimating apparatus includes a delay value search section that searches for a first delay value smaller than a delay setting value at which a given correlation value between an input signal and a feedback signal is provided, and also for a second delay value greater than the delay setting value, the feedback signal coming from a signal processing apparatus that applies signal processing on the input signal, wherein respective correlation values of the first delay value and the second delay value satisfy a given condition; and a delay estimating section that estimates a delay amount of the feedback signal relative to the input signal based on the first delay value and the second delay value.

摘要翻译： 延迟量估计装置包括延迟值搜索部分，其搜索小于提供输入信号和反馈信号之间的给定相关值的延迟设定值的第一延迟值，以及大于 延迟设定值，来自对输入信号进行信号处理的信号处理装置的反馈信号，其中第一延迟值和第二延迟值的各自的相关值满足给定条件; 以及延迟估计部，其基于所述第一延迟值和所述第二延迟值，估计所述反馈信号相对于所述输入信号的延迟量。