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31. 发明授权

US07783266B2 Bidirectional frequency converter and radio equipment using same 失效
标题翻译：双向变频器和无线电设备使用相同
公开(公告)号：US07783266B2
公开(公告)日：2010-08-24
申请号：US11576932
申请日：2005-10-06
申请人： Yoshifumi Hosokawa , Michiaki Matsuo , Noriaki Saito
发明人： Yoshifumi Hosokawa , Michiaki Matsuo , Noriaki Saito
IPC分类号： H04B1/40 , H04B1/26 , H04B15/00
CPC分类号： H03D7/12 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D2200/0025 , H03D2200/0043 , H03D2200/009
摘要： When a power supply switch is turned on and an RF signal and an LO signal are input to a bipolar transistor, a mixed signal of both signals is output as an IF signal. When the power supply switch is turned off, the bipolar transistor operates as two diodes connected between a base terminal and an emitter terminal and between the base terminal and a collector terminal. When the IF signal and the LO signal are input, the input signals are mixed with each other by the diodes and the RF signal is output. Accordingly, one frequency conversion has a plus conversion gain and when bidirectional frequency conversion is performed by the use of one frequency converter, an external circuit such as a signal path switching switch is not necessary.
摘要翻译：当电源开关接通并且RF信号和LO信号被输入到双极晶体管时，两个信号的混合信号被输出作为IF信号。当电源开关关闭时，双极晶体管作为连接在基极端子和发射极端子之间以及基极端子与集电极端子之间的两个二极管工作。当IF信号和LO信号被输入时，输入信号通过二极管相互混合并输出RF信号。因此，一个频率转换具有正转换增益，并且当通过使用一个频率转换器执行双向频率转换时，不需要外部电路，例如信号路径切换开关。

32. 发明申请

US20080051129A1 Radio Communication Device 有权
标题翻译：无线电通信设备
公开(公告)号：US20080051129A1
公开(公告)日：2008-02-28
申请号：US11629387
申请日：2005-06-13
申请人： Katsuaki Abe , Michiaki Matsuo , Noriaki Saito , Takenori Sakamoto , Akihiko Matsuoka
发明人： Katsuaki Abe , Michiaki Matsuo , Noriaki Saito , Takenori Sakamoto , Akihiko Matsuoka
IPC分类号： H04M1/00
CPC分类号： H04W88/06 , H04B1/0003
摘要： There are provided a plurality of systems of reconfigurable radio processing unit (102) whose function and performance can be modified. A control unit (104) collects quality information on the communication link in communication methods received at respective radio processing systems (102a, 102b). According to this, the control unit (104) selects an optimal communication method and transmission mode from a plurality of communication methods and transmission modes (for example, diversity transmission between a plurality of systems, diversity transmission by a single communication method, and MIMO channel multiplex transmission). By modifying configurations of the reconfigurable radio processing unit (102) according to the selected communication method and transmission mode, it is possible to communicate at a desired transmission mode. Thus, it is possible to perform an optimal transmission to the communication link according to the quality condition and other request condition.
摘要翻译：提供了多个可重构无线电处理单元（102）的系统，其功能和性能可以被修改。控制单元（104）在各个无线电处理系统（102a，102b）处接收的通信方法中收集关于通信链路的质量信息。据此，控制单元（104）从多个通信方式和发送模式（例如，多个系统之间的分集发送，单个通信方式的分集发送，以及MIMO信道多路传输）。通过根据所选择的通信方法和传输模式修改可重构无线电处理单元（102）的配置，可以以期望的传输模式进行通信。因此，可以根据质量条件和其他请求条件向通信链路执行最佳传输。

33. 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。

34. 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。

35. 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。

36. 发明申请

US20070229180A1 Distortion Compensation Circuit 有权
标题翻译：失真补偿电路
公开(公告)号：US20070229180A1
公开(公告)日：2007-10-04
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： H03F1/30 , 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幅度和输出相位特性，对其进行幅度校正的振幅信息r 11（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。

37. 发明授权

US08346293B2 Radio communication device supporting a plurality of communication schemes 有权
标题翻译：支持多种通信方式的无线通信装置
公开(公告)号：US08346293B2
公开(公告)日：2013-01-01
申请号：US11629387
申请日：2005-06-13
申请人： Katsuaki Abe , Michiaki Matsuo , Noriaki Saito , Takenori Sakamoto , Akihiko Matsuoka
发明人： Katsuaki Abe , Michiaki Matsuo , Noriaki Saito , Takenori Sakamoto , Akihiko Matsuoka
IPC分类号： H04M1/00
CPC分类号： H04W88/06 , H04B1/0003
摘要： There are provided a plurality of systems of reconfigurable radio processing unit (102) whose function and performance can be modified. A control unit (104) collects quality information on the communication link in communication methods received at respective radio processing systems (102a, 102b). According to this, the control unit (104) selects an optimal communication method and transmission mode from a plurality of communication methods and transmission modes (for example, diversity transmission between a plurality of systems, diversity transmission by a single communication method, and MIMO channel multiplex transmission). By modifying configurations of the reconfigurable radio processing unit (102) according to the selected communication method and transmission mode, it is possible to communicate at a desired transmission mode. Thus, it is possible to perform an optimal transmission to the communication link according to the quality condition and other request condition.
摘要翻译：提供了多个可重构无线电处理单元（102）的系统，其功能和性能可以被修改。控制单元（104）在各个无线电处理系统（102a，102b）处接收的通信方法中收集关于通信链路的质量信息。据此，控制单元（104）从多个通信方式和发送模式（例如，多个系统之间的分集发送，单个通信方式的分集发送，以及MIMO信道多路传输）。通过根据所选择的通信方法和传输模式修改可重构无线电处理单元（102）的配置，可以以期望的传输模式进行通信。因此，可以根据质量条件和其他请求条件向通信链路执行最佳传输。

38. 发明申请

US20100182077A1 DISCRETE FILTER, SAMPLING MIXER AND WIRELESS DEVICE 有权
标题翻译：离心过滤器，采样混合器和无线设备
公开(公告)号：US20100182077A1
公开(公告)日：2010-07-22
申请号：US12667370
申请日：2008-07-03
申请人： Yoshifumi Hosakawa , Noriaki Saito , Kentaro Miyano , Katsuaki Abe
发明人： Yoshifumi Hosakawa , Noriaki Saito , Kentaro Miyano , Katsuaki Abe
IPC分类号： H04B1/10
CPC分类号： H03H15/00 , H03D7/1441 , H03D7/1458 , H03D7/1483
摘要： A sampling filter of such circuitry as not requiring a high frequency REF signal even if the number of decimation is decreased. In the sampling filter, the rotate capacitor in each switched capacitor circuit including Cr (7a-7d) arranged in four parallel arrays operates in four phases of integration, discharge, reset and feedback different from each other at the same timing. Consequently, a control signal for driving the switched capacitor circuit is used commonly. As a result, the circuit scale of a DCU (104) is reduced and the frequency of the REF signal can be lowered to the frequency of an LO signal even in operation without decimation.
摘要翻译：这种电路的采样滤波器，即使抽取次数减少也不需要高频率的REF信号。在采样滤波器中，包括布置在四个并联阵列中的Cr（7a-7d）的每个开关电容器电路中的旋转电容器在相同的定时在积分，放电，复位和反馈的四个相位中工作。因此，通常使用用于驱动开关电容电路的控制信号。结果，即使在没有抽取的情况下，DCU（104）的电路规模减小，也可以将REF信号的频率降低到LO信号的频率。

39. 发明申请

US20120049926A1 HARMONIC REJECTION MIXER 有权
标题翻译：谐波抑制混合器
公开(公告)号：US20120049926A1
公开(公告)日：2012-03-01
申请号：US13143789
申请日：2010-01-29
申请人： Yoshito Shimizu , Noriaki Saito , Kiyomichi Araki , Takafumi Nasu
发明人： Yoshito Shimizu , Noriaki Saito , Kiyomichi Araki , Takafumi Nasu
IPC分类号： G06G7/12
CPC分类号： H03D7/165 , H03D2200/0086
摘要： Disclosed is a harmonic rejection mixer that makes it possible to suppress high-frequency response, while keeping the number of gm elements from increasing. In a harmonic rejection mixer that regulates the waveform of an output signal by mixing outputs of multiple mixers that are connected in parallel with the latter stage of multiple gm elements, some of the gm elements are shared by I phase and Q phase by using a control signal with a duty ratio of less than 50% to drive at least some of the mixers, and then using the period in which the I-phase mixers are inactive to activate the Q-phase mixers.
摘要翻译：公开了一种谐波抑制混频器，其能够抑制高频响应，同时保持gm元件的数量不增加。在通过混合与多个gm元件的后级并联连接的多个混频器的输出来调节输出信号的波形的谐波抑制混频器中，一些gm元件由I相和Q相共享，通过使用控制信号，占空比小于50％，以驱动至少一些混频器，然后使用I相混频器无效的周期来激活Q相混频器。

40. 发明授权

US07915969B2 Distortion compensating circuit 有权
标题翻译：失真补偿电路
公开(公告)号：US07915969B2
公开(公告)日：2011-03-29
申请号：US12342551
申请日：2008-12-23
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。

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