公开(公告)号：US20110038400A1

公开(公告)日：2011-02-17

申请号：US12794124

申请日：2010-06-04

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

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

IPC分类号： H04L27/18 ,  H04B1/38

CPC分类号： H04L27/2337

摘要： A wireless apparatus includes: an A/D converter which samples an in-phase signal component and a quadrature signal component from a quadrature-modulated signal of analog form alternately; a digital quadrature demodulation unit which applies digital quadrature demodulation to an output signal of the A/D converter and outputs an in-phase signal and a quadrature signal; and an error detection unit which, based on the in-phase and quadrature signals output from the digital quadrature demodulation unit, detects a time difference error between the sample timing of the in-phase signal component and the sample timing of the quadrature signal component.

摘要翻译： 无线装置包括：A / D转换器，其交替地从模拟形式的正交调制信号中采样同相信号分量和正交信号分量; 数字正交解调单元，对A / D转换器的输出信号进行数字正交解调，并输出同相信号和正交信号; 以及误差检测单元，其基于从数字正交解调单元输出的同相和正交信号，检测同相信号分量的采样定时与正交信号分量的采样定时之间的时差误差。

公开(公告)号：US08442157B2

公开(公告)日：2013-05-14

申请号：US12794124

申请日：2010-06-04

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

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

IPC分类号： H04B1/38

CPC分类号： H04L27/2337

摘要： A wireless apparatus includes: an A/D converter which samples an in-phase signal component and a quadrature signal component from a quadrature-modulated signal of analog form alternately; a digital quadrature demodulation unit which applies digital quadrature demodulation to an output signal of the A/D converter and outputs an in-phase signal and a quadrature signal; and an error detection unit which, based on the in-phase and quadrature signals output from the digital quadrature demodulation unit, detects a time difference error between the sample timing of the in-phase signal component and the sample timing of the quadrature signal component.

摘要翻译： 无线装置包括：A / D转换器，其交替地从模拟形式的正交调制信号中采样同相信号分量和正交信号分量; 数字正交解调单元，对A / D转换器的输出信号进行数字正交解调，并输出同相信号和正交信号; 以及误差检测单元，其基于从数字正交解调单元输出的同相和正交信号，检测同相信号分量的采样定时与正交信号分量的采样定时之间的时差误差。

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：US08472578B2

公开(公告)日：2013-06-25

申请号：US13363831

申请日：2012-02-01

申请人： Hideharu Shako ,  Takeshi Ohba ,  Satoshi Matsubara

发明人： Hideharu Shako ,  Takeshi Ohba ,  Satoshi Matsubara

IPC分类号： H04L7/00

CPC分类号： H04J3/0641 ,  H04J3/0647 ,  H04W56/00

摘要： A radio apparatus includes: first and second reception units to receive first and second signals from first and second radio apparatus controllers, respectively; first and second synchronous clock generation units to generate first and second recovery clocks from clock components included in the first and second signals received by the reception units, respectively; a clock synchronization detection unit to detect whether or not the second recovery clock is synchronous with the first recovery clock; a code selection unit to select a code indicating the synchronous state according to a detection result of the synchronization detection unit; a signal processing unit of generate a third signal to which the code selected by the code selection unit is added and which is synchronous with the first recovery clock; and a transmission unit to transmit the third signal generated by the signal processing unit to the second radio apparatus controller.

摘要翻译： 无线电设备包括：分别从第一和第二无线电设备控制器接收第一和第二信号的第一和第二接收单元; 第一和第二同步时钟产生单元，用于分别由接收单元接收的第一和第二信号中包括的时钟分量产生第一和第二恢复时钟; 时钟同步检测单元，用于检测第二恢复时钟是否与第一恢复时钟同步; 代码选择单元，用于根据同步检测单元的检测结果选择指示同步状态的代码; 信号处理单元，生成添加了由代码选择单元选择的代码并与第一恢复时钟同步的第三信号; 以及传输单元，用于将由信号处理单元生成的第三信号发送到第二无线电设备控制器。

公开(公告)号：US07962107B2

公开(公告)日：2011-06-14

申请号：US12130639

申请日：2008-05-30

申请人： Hideharu Shako ,  Takeshi Ohba ,  Tomoyoshi Nohira

发明人： Hideharu Shako ,  Takeshi Ohba ,  Tomoyoshi Nohira

IPC分类号： H04B1/04 ,  H01Q11/12

CPC分类号： H03F3/72

摘要： In a transmission device including an RF power amplifier with less number of terminals for monitoring an input/output signal of the RF power amplifier, there are provided with an input signal detector detecting the input signal; an output signal detector detecting the output signal; a first power amplifier switch switching ON or OFF the power amplifier; a monitor terminal; and an RF switch selecting an input signal or output signal of the power amplifier to be transmitted to the monitor terminal, in association with the first power amplifier switch being switched ON or OFF.

摘要翻译： 在包括具有较少数量的终端的RF功率放大器的发射装置中，用于监测RF功率放大器的输入/输出信号，其中设置有检测输入信号的输入信号检测器; 检测输出信号的输出信号检测器; 第一功率放大器开关接通或关断功率放大器; 监控终端; 以及RF开关，其与第一功率放大器开关接通或断开相关联，选择要发送到监视终端的功率放大器的输入信号或输出信号。

公开(公告)号：US07961046B2

公开(公告)日：2011-06-14

申请号：US12415138

申请日：2009-03-31

申请人： Hideharu Shako ,  Takeshi Ohba

发明人： Hideharu Shako ,  Takeshi Ohba

IPC分类号： H03F1/26

CPC分类号： H03F1/34 ,  H03F1/3247

摘要： A distortion compensating amplifier including a forward circuit and a feedback circuit and performing distortion compensation of a signal in the forward circuit by use of a gain of the feedback circuit, includes a detecting unit which detects that the gain of the forward circuit is changed, a calculating unit which calculates, when the detecting unit detects that the gain of the forward circuit is changed, the gain of the feedback circuit on the basis of an input signal to the forward circuit and an output signal from the forward circuit, and a feedback gain updating unit which updates the present gain of the feedback circuit with the gain calculated by the calculating unit.

摘要翻译： 包括正向电路和反馈电路的失真补偿放大器，通过使用反馈电路的增益对正向电路中的信号执行失真补偿，包括检测单元，其检测正向电路的增益被改变， 计算单元，当检测单元检测到正向电路的增益改变时，基于正向电路的输入信号和来自正向电路的输出信号，反馈电路的增益和反馈增益 更新单元，其利用由计算单元计算出的增益来更新反馈电路的当前增益。

公开(公告)号：US07911254B2

公开(公告)日：2011-03-22

申请号：US12538321

申请日：2009-08-10

申请人： Takeshi Ohba ,  Hideharu Shako

发明人： Takeshi Ohba ,  Hideharu Shako

IPC分类号： H03L5/00

CPC分类号： H04L27/0014 ,  H03F1/34 ,  H03F3/24 ,  H04B1/0475 ,  H04B2001/0433 ,  H04L2027/0016 ,  H04L2027/0018

摘要： A direct-current-offset correction device includes a digital-to-analog converter that converts a digital signal into an analog signal, a modulator that modulates the analog signal to generate a modulated signal, a direct-current-offset correction value calculation unit that calculates a direct-current-offset correction value as a reverse characteristic component of a carrier leak occurring in the modulated signal based on a demodulated signal which is demodulated by feeding back the modulated signal, a direct-current-offset correction unit that corrects a direct-current-offset on the digital signal based on the direct-current-offset correction value, a correction value detection unit that detects whether or not the direct-current-offset correction value is zero or a neighboring value of zero, and an offset generation unit that superimposes a direct-current-offset component on the analog signal based on a detection result of the correction value detection unit.

摘要翻译： 直流偏移校正装置包括将数字信号转换为模拟信号的数模转换器，调制模拟信号以产生调制信号的调制器，直流偏移校正值计算单元， 基于通过反馈调制信号进行解调的解调信号，计算直流偏移校正值作为在调制信号中发生的载波泄漏的反向特性分量;直流偏移校正单元，其校正直接 基于直流偏移校正值对数字信号进行电流偏移;校正值检测单元，其检测直流偏移校正值是否为零，或相邻值为零;以及偏移生成 单元，其基于校正值检测单元的检测结果将直流偏移分量叠加在模拟信号上。

公开(公告)号：US07711069B2

公开(公告)日：2010-05-04

申请号：US12206058

申请日：2008-09-08

申请人： Hideharu Shako ,  Takeshi Ohba

发明人： Hideharu Shako ,  Takeshi Ohba

IPC分类号： H04L25/49 ,  H03K7/00

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

摘要： Distortion-compensation amplification apparatus that can obtain an appropriate error vector magnitude without increasing power consumption and can suppress the distortion of a transmission signal appropriately. A distortion compensation section applies distortion compensation to the transmission signal. An amplification section amplifies the transmission signal to which distortion compensation has been applied by the distortion compensation section. A frequency component calculation section calculates the power of frequency components of the transmission signal amplified by the amplification section. A peak suppression section suppresses the peak value of the transmission signal input to the distortion compensation section in accordance with the power of the frequency components calculated by the frequency component calculation section.

摘要翻译： 失真补偿放大装置，其可以在不增加功耗的情况下获得适当的误差矢量幅度，并且可以适当地抑制发射信号的失真。 失真补偿部对发送信号进行失真补偿。 放大部分放大由失真补偿部分施加了失真补偿的发送信号。 频率分量计算部分计算由放大部分放大的发射信号的频率分量的功率。 峰值抑制部根据由频率分量计算部计算出的频率分量的功率，抑制输入到失真补偿部的发送信号的峰值。

公开(公告)号：US20080299920A1

公开(公告)日：2008-12-04

申请号：US12130639

申请日：2008-05-30

申请人： Hideharu Shako ,  Takeshi Ohba ,  Tomoyoshi Nohira

发明人： Hideharu Shako ,  Takeshi Ohba ,  Tomoyoshi Nohira

IPC分类号： H04B1/04

CPC分类号： H03F3/72

摘要： In a transmission device including an RF power amplifier with less number of terminals for monitoring an input/output signal of the RF power amplifier, there are provided with an input signal detector detecting the input signal; an output signal detector detecting the output signal; a first power amplifier switch switching ON or OFF the power amplifier; a monitor terminal; and an RF switch selecting an input signal or output signal of the power amplifier to be transmitted to the monitor terminal, in association with the first power amplifier switch being switched ON or OFF.

摘要翻译： 在包括具有较少数量的终端的RF功率放大器的发射装置中，用于监测RF功率放大器的输入/输出信号，其中设置有检测输入信号的输入信号检测器; 检测输出信号的输出信号检测器; 第一功率放大器开关接通或关断功率放大器; 监控终端; 以及RF开关，其与第一功率放大器开关接通或断开相关联，选择要发送到监视终端的功率放大器的输入信号或输出信号。

公开(公告)号：US20080130798A1

公开(公告)日：2008-06-05

申请号：US11970653

申请日：2008-01-08

申请人： Takeshi Ohba ,  Yasuhito Funyu ,  Hideharu Shako

发明人： Takeshi Ohba ,  Yasuhito Funyu ,  Hideharu Shako

IPC分类号： H04L27/06

CPC分类号： H03F1/3247 ,  H03F1/3294 ,  H03F2201/3233

摘要： In a delay regulating device, delay regulation is performed using a delay circuit performing delay regulation in a clock unit and a delay filter performing delay regulation in a tap unit smaller than the clock unit. The delay regulation is performed so as to obtain the maximum value of the correlation value and the minimum value of the error signal. First the delay circuit based on the clock unit is used to control the delay amount of the reference signal so as to obtain the maximum value of the correlation value. The delay filter is used to control the delay amount of the feedback signal so as to obtain the maximum value of the correlation value. Phase adjustment of the reference signal and the feedback signal is performed. The delay amount of the feedback signal is regulated so as to minimize the error signal unit using the delay filter.

摘要翻译： 在延迟调节装置中，使用在时钟单元中执行延迟调节的延迟电路和在小于时钟单元的抽头单元中执行延迟调节的延迟滤波器来执行延迟调节。 执行延迟调节以获得相关值的最大值和误差信号的最小值。 首先，使用基于时钟单元的延迟电路来控制参考信号的延迟量，以获得相关值的最大值。 延迟滤波器用于控制反馈信号的延迟量，以获得相关值的最大值。 执行参考信号和反馈信号的相位调整。 调整反馈信号的延迟量，以便使用延迟滤波器使误差信号单元最小化。