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1. 发明申请

US20120002768A1 DISTORTION-CORRECTING RECEIVER AND DISTORTION CORRECTION METHOD 审中-公开
标题翻译：失真校正接收器和失真校正方法
公开(公告)号：US20120002768A1
公开(公告)日：2012-01-05
申请号：US13256885
申请日：2010-03-05
申请人： Tadashi Morita , Yoshito Shimizu , Noriaki Saito
发明人： Tadashi Morita , Yoshito Shimizu , Noriaki Saito
IPC分类号： H03D1/04
CPC分类号： H04B1/30 , H04B1/123
摘要： Disclosed are a distortion-correcting receiver and a distortion correction method capable of precisely cancelling inter-modulation secondary distortion even when an input signal is markedly band-limited in a reception processing unit. In the distortion-correcting receiver (100), the reception processing unit (110) executes reception processing of the input signal and outputs a received signal. A replica signal generation unit (120) generates a replica signal of the inter-modulation distortion component of the input signal by use of the input signal. A correction signal generation unit (130) comprises a frequency property imparting unit (131) and a weighting unit (132), adjusts the frequency property and the gain of the replica signal, and generates a correction signal. A correction signal injection unit (140) adds the reverse-phase signal of the correction signal to the received signal to correct the received signal.
摘要翻译：公开了一种失真校正接收机和失真校正方法，即使在接收处理单元中输入信号被带限制时，也能够精确地消除互调二次失真。在失真校正接收机（100）中，接收处理单元（110）执行输入信号的接收处理并输出接收信号。复制信号生成单元（120）通过使用输入信号生成输入信号的互调失真分量的复制信号。校正信号生成单元（130）包括频率特性赋予单元（131）和加权单元（132），调整复制信号的频率特性和增益，并生成校正信号。校正信号注入单元（140）将校正信号的反相信号加到接收信号上以校正接收到的信号。

2. 发明授权

US08050637B2 Polar modulation transmitter, adaptive distortion compensation processing system, polar modulation transmission method, and adaptive distortion compensation processing method 有权
标题翻译：极性调制发射机，自适应失真补偿处理系统，极坐标调制传输方法和自适应失真补偿处理方法
公开(公告)号：US08050637B2
公开(公告)日：2011-11-01
申请号：US12159469
申请日：2006-12-26
申请人： Yoshito Shimizu , Tomoya Urushihara
发明人： Yoshito Shimizu , Tomoya Urushihara
IPC分类号： H04B1/02
CPC分类号： H03F3/24 , H03F1/02 , H03F1/3223 , H03F1/3229 , H03F1/3241 , H03F2200/468 , H03F2201/3212 , H04B1/0475 , H04B2001/0425
摘要： An object of the invention is to provide a polar modulation transmitter that can perform adaptive distortion compensation processing without the need for a synchronization adjustment circuit for synchronizing an input baseband signal and an output signal of a power amplifier. An adaptive operation control section 1501 measures the unbalance amount of an output spectrum of a power amplifier 1 and a coefficient adjustment determination section of the adaptive operation control section 1501 performs iteration control so that if the unbalance amount is equal to or greater than a predetermined threshold value, coefficient information output to a distortion compensation processing circuit 1301 is adjusted and an adjustment is made to distortion compensation processing in the distortion compensation processing circuit 1301 and if the unbalance amount is less than the predetermined threshold value, the coefficient information is maintained, whereby the characteristic change of the power amplifier 1 at the environmental temperature change time can be adaptively compensated for without using a synchronization adjustment circuit for synchronizing an input baseband signal and an output signal from the power amplifier 1.
摘要翻译：本发明的一个目的是提供一种能够进行自适应失真补偿处理的极性调制发射机，而不需要用于同步输入基带信号和功率放大器的输出信号的同步调整电路。自适应操作控制部分1501测量功率放大器1的输出频谱的不平衡量，并且自适应操作控制部分1501的系数调整确定部分执行迭代控制，使得如果不平衡量等于或大于预定阈值输出到失真补偿处理电路1301的系数信息被调整，并且对失真补偿处理电路1301中的失真补偿处理进行调整，并且如果不平衡量小于预定阈值，则保持系数信息，从而能够自适应地补偿功率放大器1在环境温度变化时间的特性变化，而不使用用于使输入基带信号同步的同步调整电路和来自功率放大器1的输出信号。

3. 发明申请

US20100291885A1 MULTIMODE-COMPAIBLE POLAR MODULATION TRANSMISSION DEVICE AND MULTIMODE RADIO COMMUNICATION METHOD 有权
标题翻译：多模兼容极性调制传输设备和多模式无线电通信方法
公开(公告)号：US20100291885A1
公开(公告)日：2010-11-18
申请号：US12159121
申请日：2006-12-26
申请人： Yoshito Shimizu , Akihiko Matsuoka , Tomoya Urushihara
发明人： Yoshito Shimizu , Akihiko Matsuoka , Tomoya Urushihara
IPC分类号： H04B1/04
CPC分类号： H04B1/0483 , H03F1/0222 , H03F1/3241 , H04B2001/0425
摘要： An object of the invention is to provide a multimode polar modulation device and a multimode radio communication method for making it possible to decrease the distortion compensation processing data capacity while maintaining the distortion compensation accuracy and also making it possible to efficiently store the distortion compensation processing data corresponding to a multimode modulation signal adaptively acquired in memory.At the distortion compensation coefficient calibration operation time of a polar modulation circuit 1901, a control section 1903 selects a modulation signal with a narrower dynamic range of amplitude signal than at the transmission operation time, an adaptive operation control section 1711 measures a spectrum in output of a power amplifier 1 for each predetermined output level, and a distortion compensation processing circuit 1701 finds optimum coefficient information. On the other hand, at the transmission operation time, the optimum coefficient information found according to the above-mentioned procedure is referenced and the optimum coefficient information of a modulation signal with a wide dynamic range of amplitude signal is found.
摘要翻译：本发明的目的是提供一种多模极化调制装置和多模式无线电通信方法，用于在保持失真补偿精度的同时降低失真补偿处理数据容量，并且还可以有效地存储失真补偿处理数据对应于在存储器中自适应地获取的多模式调制信号。在极坐标调制电路1901的失真补偿系数校准操作时间，控制部1903选择振幅信号的动态范围比传输动作时间窄的调制信号，自适应动作控制部1711测定输出的频谱用于每个预定输出电平的功率放大器1，并且失真补偿处理电路1701找到最佳系数信息。另一方面，在发送操作时间，参考根据上述过程找到的最佳系数信息，并且找到具有宽幅度信号动态范围的调制信号的最佳系数信息。

4. 发明申请

US20100248675A1 DISCRETE FILTER, SAMPLING MIXER, AND RADIO DEVICE 有权
标题翻译：离散滤波器，采样混频器和无线电设备
公开(公告)号：US20100248675A1
公开(公告)日：2010-09-30
申请号：US12304011
申请日：2007-06-19
申请人： Yoshifumi Hosokawa , Noriaki Saito , Yoshito Shimizu , Katsuaki Abe
发明人： Yoshifumi Hosokawa , Noriaki Saito , Yoshito Shimizu , Katsuaki Abe
IPC分类号： H04B1/16 , H03H7/00
CPC分类号： H03D7/00 , G11C27/024 , H03H15/00 , H03J2200/10
摘要： Provided is a discrete filter capable of increasing degree of freedom of design including a DC gain. A sampling mixer (100) includes: a control signal generation unit (104) which generates a control signal including an SO signal; a Ch (6) which successively integrates reception signals sampled by an LO signal frequency as discrete signals; a plurality of Cr (7, 8) which successively integrate discrete signals at a timing based on the control signal; Cb (15) which alternately integrates the discrete signals successively integrated by the respective Cr (7, 8); and a gain control capacitance unit (110) which has gain control capacitors (44, 45, 46) connected in parallel to the respective Cr (7, 8) and integrating the discrete signal and a reset switch (47) for resetting the discrete signal of the gain control capacitors (44, 45, 46) integrated in the past, upon connection between one end of Cr (7) and Cb (15).
摘要翻译：提供了能够增加包括DC增益的设计自由度的离散滤波器。采样混频器（100）包括：产生包括SO信号的控制信号的控制信号产生单元（104）将由LO信号频率采样的接收信号连续地合并为一个Ch（6）作为离散信号; 多个Cr（7,8），其基于控制信号在定时连续地整合离散信号; Cb（15），其交替地对由相应Cr（7,8）连续积分的离散信号进行积分; 以及增益控制电容单元（110），其具有并联连接到各个Cr（7,8）并且对离散信号进行积分并具有用于复位离散信号的复位开关（47）的增益控制电容器（44,45,46）（7）和Cb（15）的一端之间连接的过去集成的增益控制电容器（44,45,46）。

5. 发明授权

US07535310B2 Distortion compensation circuit 有权
标题翻译：失真补偿电路
公开(公告)号：US07535310B2
公开(公告)日：2009-05-19
申请号：US11569970
申请日：2005-06-27
申请人： Yoshito Shimizu , Noriaki Saito
发明人： Yoshito Shimizu , Noriaki Saito
IPC分类号： H03C3/00 , H03F1/32 , H03F3/24 , H04B1/04 , H04L27/20
CPC分类号： H04L27/367 , H03F1/3282
摘要： A distortion compensating circuit is provided in which, in the polar modulation system, while suppressing increase of compensation data and increase of the circuit scale, a modulated signal can be correctly expressed, or low-distortion characteristics of a power amplifier can be realized.Based on a steady characteristic compensating circuit 11 which stores an output signal amplitude and output phase characteristics with respect to a control voltage in a steady state, amplitude adjustment is executed on amplitude information r11(t) on which amplitude correction is performed, by a first amplitude information adjusting portion 13, whereby the output-response characteristics of an output signal amplitude of an amplifier with respect to a change of the control voltage can be improved.
摘要翻译：提供了一种失真补偿电路，其中在极坐标调制系统中，在抑制补偿数据的增加和电路规模的增加的同时，可以正确地表达调制信号，或者能够实现功率放大器的低失真特性。基于稳定特性补偿电路11，其以相对于稳定状态的控制电压存储输出信号振幅和输出相位特性，对其进行幅度校正的振幅信息r11（t）执行幅度调整，第一幅度信息调整部分13，从而可以提高放大器的输出信号幅度相对于控制电压变化的输出响应特性。

6. 发明申请

US20070109161A1 Reception apparatus and reception method 有权
标题翻译：接收方式和接收方式
公开(公告)号：US20070109161A1
公开(公告)日：2007-05-17
申请号：US10581451
申请日：2004-11-30
申请人： Yoshito Shimizu , Takeaki Watanabe , Noriaki Saito
发明人： Yoshito Shimizu , Takeaki Watanabe , Noriaki Saito
IPC分类号： H03M1/10
CPC分类号： H04B1/30
摘要： A reception apparatus capable of calibrating a DC offset voltage fast and with high accuracy even in an environment in which interferer exist without causing noise characteristic degradation. In this apparatus, a digital signal processing section (108) controls the gain of a received signal at such a gain that predetermined reception quality is obtained. A time constant control circuit (110) controls the time constant and makes the amount of attenuation of the received signal of a low pass filter (106a) more moderate compared to the case where a DC offset voltage is not calibrated during DC offset voltage calibration. A voltage calibration circuit (111) calibrates the DC offset voltage generated in the received signal when controlling the gain. A second decoder (112) compares the gain during gain control with a threshold and instructs an operation control circuit (113) to set a high-frequency circuit (114) in a non-operating state when the gain during gain control is equal to or above the threshold and set the high-frequency circuit (114) in an operating state when the gain during gain control is less than the threshold.
摘要翻译：即使在不存在干扰源的环境中也不会引起噪声特性劣化的情况下，能够快速，高精度地校正DC偏移电压的接收装置。在该装置中，数字信号处理部（108）以获得预定接收质量的增益来控制接收信号的增益。时间常数控制电路（110）控制时间常数，并且使得低通滤波器（106a）的接收信号的衰减量与在DC偏移电压校准期间未校准DC偏移电压的情况相比更适中。电压校准电路（111）在控制增益时校准接收信号中产生的直流偏移电压。第二解码器（112）将增益控制期间的增益与阈值进行比较，并指示运算控制电路（113）将高频电路（114）设置为非运行状态，当增益控制期间的增益等于或等于高于阈值，并且当增益控制期间的增益小于阈值时，将高频电路（114）设置在操作状态。

7. 发明授权

US08081943B2 Reception apparatus and reception method 有权
标题翻译：接收方式和接收方式
公开(公告)号：US08081943B2
公开(公告)日：2011-12-20
申请号：US12276047
申请日：2008-11-21
申请人： Yoshito Shimizu , Takeaki Watanabe , Noriaki Saito
发明人： Yoshito Shimizu , Takeaki Watanabe , Noriaki Saito
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H04B1/30
摘要： A receiving apparatus includes an amplification section that amplifies a received signal and a frequency conversion section that converts a frequency of the received signal, from a radio frequency to a baseband, the baseband having a lower frequency than the radio frequency. A gain control section amplifies, by a predetermined gain, the signal that has been subjected to the frequency conversion to the baseband. A voltage calibration section performs calibration on an offset voltage generated in the signal subjected to frequency conversion to the baseband. A time constant control section sets a first time constant during a reception operation and sets a second time constant, which is reduced with respect to the first time constant, during the calibration. A filter section passes a received signal of a predetermined band, with the first time constant or the second time constant, an operation control section stops operation of the amplification section during the calibration, controls the amplification section to operate during the reception operation, and controls the operation of the amplification section so as to reduce a residual offset voltage caused by switching the operation of the amplification section.
摘要翻译：接收装置包括放大接收信号的放大部分和频率转换部分，该频率转换部分将接收信号的频率从射频转换成基带，频率低于射频。增益控制部分将经过频率转换的信号以预定的增益放大到基带。电压校准部对经过频率转换为基带的信号中产生的偏移电压进行校准。时间常数控制部分在接收操作期间设置第一时间常数，并且在校准期间设置相对于第一时间常数减小的第二时间常数。滤波器部分以第一时间常数或第二时间常数通过预定频带的接收信号，操作控制部分在校准期间停止放大部分的操作，控制放大部分在接收操作期间操作，并且控制放大部分的操作，以便减少由于放大部分的操作而导致的残留偏移电压。

8. 发明申请

US20110176640A1 SAMPLING CIRCUIT AND RECEIVER UTILIZING THE SAME 有权
标题翻译：采样电路和接收器使用它
公开(公告)号：US20110176640A1
公开(公告)日：2011-07-21
申请号：US13121244
申请日：2009-12-04
申请人： Yohei Morishita , Noriaki Saito , Yoshito Shimizu
发明人： Yohei Morishita , Noriaki Saito , Yoshito Shimizu
IPC分类号： H04L25/06 , G11C27/02
CPC分类号： H03H19/004 , H03H15/00 , H04B1/28
摘要： Disclosed are a sampling circuit and a receiver that have a high level of filter design flexibility and excellent image rejection characteristics. Signals with phases that differ by 90° are sampled using an IQ generating circuit (101) and are weighted by each of multiple parallel-connected discrete-time circuits (102-1-102-n), and the result of addition by an output adding circuit (103) is ultimately output. Alternatively, a configuration in which the multiple parallel-connected discrete-time circuits (102-1-102-n) and the output adding circuit (103) are cascade-connected is adopted, so that frequency characteristics having an attenuation pole to one side can be achieved and excellent image rejection characteristics can be obtained.
摘要翻译：公开了具有高水平的滤波器设计灵活性和优异的图像抑制特性的采样电路和接收器。使用IQ生成电路（101）对具有相差90°的相位的信号进行采样，并由多个并联连接的离散时间电路（102-1-102-n）中的每一个进行加权，并且通过输出最终输出加法电路（103）。或者，采用其中并联连接的多个离散时间电路（102-1-102-n）和输出加法电路（103）串联的配置，使得具有到一侧具有衰减极点的频率特性并且可以获得优异的图像抑制特性。

9. 发明申请

US20100222015A1 POLAR MODULATION TRANSMITTER, ADAPTIVE DISTORTION COMPENSATION PROCESSING SYSTEM, POLAR MODULATION TRANSMISSION METHOD, AND ADAPTIVE DISTORTION COMPENSATION PROCESSING METHOD 有权
标题翻译：极性调制发射机，自适应失真补偿处理系统，极性调制传输方法和自适应失真补偿处理方法
公开(公告)号：US20100222015A1
公开(公告)日：2010-09-02
申请号：US12159469
申请日：2006-12-26
申请人： Yoshito Shimizu , Tomoya Urushihara
发明人： Yoshito Shimizu , Tomoya Urushihara
IPC分类号： H04B1/02
CPC分类号： H03F3/24 , H03F1/02 , H03F1/3223 , H03F1/3229 , H03F1/3241 , H03F2200/468 , H03F2201/3212 , H04B1/0475 , H04B2001/0425
摘要： An object of the invention is to provide a polar modulation transmitter that can perform adaptive distortion compensation processing without the need for a synchronization adjustment circuit for synchronizing an input baseband signal and an output signal of a power amplifier. An adaptive operation control section 1501 measures the unbalance amount of an output spectrum of a power amplifier 1 and a coefficient adjustment determination section of the adaptive operation control section 1501 performs iteration control so that if the unbalance amount is equal to or greater than a predetermined threshold value, coefficient information output to a distortion compensation processing circuit 1301 is adjusted and an adjustment is made to distortion compensation processing in the distortion compensation processing circuit 1301 and if the unbalance amount is less than the predetermined threshold value, the coefficient information is maintained, whereby the characteristic change of the power amplifier 1 at the environmental temperature change time can be adaptively compensated for without using a synchronization adjustment circuit for synchronizing an input baseband signal and an output signal from the power amplifier 1.
摘要翻译：本发明的一个目的是提供一种能够进行自适应失真补偿处理的极性调制发射机，而不需要用于同步输入基带信号和功率放大器的输出信号的同步调整电路。自适应操作控制部分1501测量功率放大器1的输出频谱的不平衡量，并且自适应操作控制部分1501的系数调整确定部分执行迭代控制，使得如果不平衡量等于或大于预定阈值输出到失真补偿处理电路1301的系数信息被调整，并且对失真补偿处理电路1301中的失真补偿处理进行调整，并且如果不平衡量小于预定阈值，则保持系数信息，从而能够自适应地补偿功率放大器1在环境温度变化时间的特性变化，而不使用用于使输入基带信号同步的同步调整电路和来自功率放大器1的输出信号。

10. 发明授权

US07715808B2 Polar modulating circuit, polar coordinate modulating method, integrated circuit and radio transmission device 有权
标题翻译：极坐标调制电路，极坐标调制方法，集成电路和无线电传输装置
公开(公告)号：US07715808B2
公开(公告)日：2010-05-11
申请号：US11814181
申请日：2006-04-26
申请人： Yoshito Shimizu , Noriaki Saito
发明人： Yoshito Shimizu , Noriaki Saito
IPC分类号： H04B1/02
CPC分类号： H03C5/00 , H03C1/36 , H03C3/40 , H03F1/0222 , H03F1/3282
摘要： This invention intends to provide a polar modulating circuit, a polar modulating method, an integrated circuit and a radio transmission device capable of compensating for a delay difference between paths of a phase signal and an amplitude signal while suppressing an increase in the circuit scale in a polar modulating system. In a delay quantity determining unit 102, delay quantity information relative to the amplitude value of the amplitude signal or transmission level information S1, based on the step response characteristic of a power amplifying unit 105 are previously stored as table data. Thus, by executing delay adjustment using, as a reference signal, the amplitude signal or transmission level information S1, the delay difference between paths of a phase signal and an amplitude signal can be compensated for while suppressing an increase in the circuit scale.
摘要翻译：本发明旨在提供一种极坐标调制电路，极坐标调制方法，集成电路和无线电传输装置，能够补偿相位信号和振幅信号的路径之间的延迟差，同时抑制电路规模的增加极性调制系统。在延迟量确定单元102中，基于功率放大单元105的阶跃响应特性相对于幅度信号或发送电平信息S1的振幅值的延迟量信息被预先存储为表数据。因此，通过使用作为参考信号的振幅信号或发送电平信息S1进行延迟调整，可以在抑制电路规模的增加的同时补偿相位信号的路径与幅度信号之间的延迟差。

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