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1.发明授权High-frequency amplifier, feed-forward amplifier and distortion compensating amplifier 失效高频放大器，前馈放大器和失真补偿放大器公开(公告)号：US06894562B2
公开(公告)日：2005-05-17
申请号：US10111411
申请日：2001-08-30
CPC分类号： H03F3/604 , H03F1/3223 , H03F1/565
摘要： A divider 3 for dividing and distributing a high-frequency signal input from an input terminal 1 to two output sides, a main amplifying unit 4, connected to one output side of the divider 3, for amplifying one high-frequency signal output from the divider 3, a subsidiary amplifying unit 5, connected to the other output side of the divider 3, for performing no operation in case of a low instantaneous electric power of the other high-frequency signal output from the divider 3 and amplifying the other high-frequency signal in case of a high instantaneous electric power of the other high-frequency signal and a circulator 6 for injecting the high-frequency signal amplified in the subsidiary amplifying unit 5 into the output side of the main amplifying unit 4 and injecting the high-frequency signal amplified in the main amplifying unit 4 into an output terminal 2 are arranged.
摘要翻译： 分频器3，用于将从输入端子1输入的高频信号分配到两个输出侧;主放大单元4，连接到除法器3的一个输出侧，用于放大从分频器输出的一个高频信号 如图3所示，附加放大单元5连接到除法器3的另一个输出侧，用于在从分频器3输出的另一个高频信号的低瞬时功率的情况下不执行操作，并且放大另一个高频 在另一个高频信号的高瞬时功率的情况下的信号;以及用于将在副放大单元5中放大的高频信号注入到主放大单元4的输出侧的循环器6，并且将高频 在主放大单元4中被放大为输出端子2的信号被布置。
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公开(公告)号：US06385436B1
公开(公告)日：2002-05-07
申请号：US09429081
申请日：1999-10-29
IPC分类号： H04Q720
CPC分类号： H03F1/3229 , H03F1/3223 , H03F3/24 , H04B2001/0441
摘要： Conventional distortion compensation circuits have addressed the problem that their distortion compensation amount is greatly reduced at levels other than the designed power level. The present invention provides a distortion compensation circuit that comprises: a vector adjuster; a linearizer; a linear signal extraction path for extracting part of an input signal from the input side of the vector adjuster; a nonlinear signal extraction path for extracting part of an output signal from the output side of the amplifier; a level detector for detecting a combined power level of the signals from the linear signal extraction path and the nonlinear signal extraction path; and a control circuit for adjusting a bias of the linearizer in accordance with the detected combined power level, electrically adjusting the linearizer so that the power detected by the level detector is minimized, and adjusting the vector adjuster so that the power detected by the level detector is minimized every time the linearizer is adjusted. As a result, the distortion compensation circuit of the present invention can optimize distortion compensation at all times independently of the average power changes of the input signal, the secular changes of the amplifier and the state changes of the amplifier caused by temperature changes.
摘要翻译： 传统的失真补偿电路已经解决了它们的失真补偿量在设计功率水平以外的水平大大降低的问题。 本发明提供了一种失真补偿电路，包括：矢量调节器; 线性化器 线性信号提取路径，用于从矢量调节器的输入侧提取输入信号的一部分; 非线性信号提取路径，用于从放大器的输出侧提取输出信号的一部分; 电平检测器，用于检测来自线性信号提取路径和非线性信号提取路径的信号的组合功率电平; 以及控制电路，用于根据检测到的组合功率电平来调整线性化器的偏置，电调节线性化器，使得由电平检测器检测到的功率最小化，并且调整矢量调节器使得由电平检测器检测到的功率 每次线性化调节器被最小化。 结果，本发明的失真补偿电路可以随时独立于输入信号的平均功率变化，放大器的长期变化和由温度变化引起的放大器的状态变化而随时优化失真补偿。
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公开(公告)号：US06566945B2
公开(公告)日：2003-05-20
申请号：US10030102
申请日：2002-01-17
申请人： Masatoshi Nakayama , Kenichi Horiguchi , Yuji Sakai , Yukio Ikeda , Kazuyuki Totani , Satoshi Kunugi , Haruyasu Senda
发明人： Masatoshi Nakayama , Kenichi Horiguchi , Yuji Sakai , Yukio Ikeda , Kazuyuki Totani , Satoshi Kunugi , Haruyasu Senda
IPC分类号： H03F366
CPC分类号： H03F1/3235 , H03F2201/3212 , H03F2201/3218
摘要： A feedforward amplifier combines an input signal combined by a first error rejection loop with an error component and a first pilot signal detected by a second error detection loop, thereby canceling out the error component and the first pilot signal residual in the input signal.
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公开(公告)号：US06456160B1
公开(公告)日：2002-09-24
申请号：US09840181
申请日：2001-04-24
申请人： Masatoshi Nakayama , Kenichi Horiguchi , Yuji Sakai , Yukio Ikeda , Junichi Nagano , Haruyasu Senda
发明人： Masatoshi Nakayama , Kenichi Horiguchi , Yuji Sakai , Yukio Ikeda , Junichi Nagano , Haruyasu Senda
IPC分类号： H03F366
CPC分类号： H03F1/3229
摘要： A feedforward amplifier combines an input signal delayed by a delay circuit with an output signal by a combiner; down-converts the output of the combiner to a low frequency by a frequency converter; extracts a distortion component from the output of the frequency converter; measures the distortion component by a power detector; and controls a second vector regulator of a distortion canceling loop by a controller such that the distortion component measured becomes minimum.
摘要翻译： 前馈放大器将由延迟电路延迟的输入信号与组合器的输出信号进行组合; 通过变频器将组合器的输出下变频为低频; 从变频器的输出中提取失真分量; 通过功率检测器测量失真分量; 并且通过控制器控制失真消除环路的第二矢量调节器，使得测量的失真分量变得最小。
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5.发明授权Feedforward amplifier with improved characteristics without using pilot signal 失效前馈放大器具有改进的特性，无需使用导频信号
公开(公告)号：US6133791A
公开(公告)日：2000-10-17
申请号：US177651
申请日：1998-10-23
CPC分类号： H03F1/3229
摘要： A feedforward amplifier which includes a distortion detector, a distortion eliminator, an error power extractor, a first level detector and a first controller. The error power extractor extracts output error power due to variations in the distortion eliminator by combining the output signal from the distortion eliminator with the signal from a first linear signal path in the distortion detector in opposite phases. The first level detector detects the output error power extracted by the error power extractor, and the first controller controls a first variable attenuator and a first phase shifter which are interposed in the distortion eliminator such that the output error power is maintained at zero. This can solve a problem of a conventional feedforward amplifier in that the power level of the pilot signal must be increased to heighten the detection sensitivity of the pilot signal because the detection level of the pilot signal becomes minimum at an optimum operation point, and that the increasing power of the pilot signal degrades the communication quality of a system employing the conventional feedforward amplifier.
摘要翻译： 一种前馈放大器，包括失真检测器，失真消除器，误差功率提取器，第一电平检测器和第一控制器。 误差功率提取器通过将来自失真消除器的输出信号与来自失真检测器中的第一线性信号路径的信号相反地组合，由于失真消除器的变化而提取输出误差功率。 第一电平检测器检测由误差电力提取器提取的输出误差功率，并且第一控制器控制插入失真消除器中的第一可变衰减器和第一移相器，使得输出误差功率保持为零。 这可以解决常规前馈放大器的问题，因为导频信号的检测电平在最佳操作点变为最小时必须提高导频信号的功率电平，以提高导频信号的检测灵敏度， 导频信号的增加功率降低了采用常规前馈放大器的系统的通信质量。
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公开(公告)号：US08047084B2
公开(公告)日：2011-11-01
申请号：US12750082
申请日：2010-03-30
申请人： Ken Okuyama , Yukio Ikeda , Yukitoshi Terasaka , Takahiro Sanada
发明人： Ken Okuyama , Yukio Ikeda , Yukitoshi Terasaka , Takahiro Sanada
摘要： A torque-index sensor having index sensor and torque sensor closely arranged and integrated therein with lightened interference between them is provided. The invented torque-index sensor is comprised of torque sensor that includes first magnetic sensor arranged beside first annular-shaped magnet and index sensor that includes second magnet arranged beside annular-shaped encoder and second magnetic sensor that are arranged being in-line on common axis; and means for varying magnetic flux, which changes direction of magnetic flux that is generated from second magnet toward first magnetic sensor, positioned between first magnetic sensor in torque sensor and second magnet in index sensor.
摘要翻译： 提供一种转矩指数传感器，其具有紧密排列和集成在其中的折射率传感器和扭矩传感器，其间具有减轻的干涉。 本发明的转矩传感器包括转矩传感器，转矩传感器包括布置在第一环形磁体旁边的第一磁传感器和索引传感器，该传感器包括布置在环形编码器旁边的第二磁体和第二磁传感器， ; 以及用于改变磁通量的装置，其改变位于扭矩传感器中的第一磁传感器和索引传感器中的第二磁体之间的从第二磁体产生的磁通量的方向朝向第一磁传感器。
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公开(公告)号：US20070227268A1
公开(公告)日：2007-10-04
申请号：US11526075
申请日：2006-09-25
申请人： Song Ouyang , Yukio Ikeda , Kouichi Sato
发明人： Song Ouyang , Yukio Ikeda , Kouichi Sato
IPC分类号： G01L3/00
摘要： A magnetostrictive torque sensor having: a rotating shaft to rotate around a center axis, the rotating shaft having magnetostrictive characteristics; and a cylindrical magnetic core disposed at a predetermined distance on an outer periphery of the rotating shaft, the cylindrical magnetic core having a detection coil disposed on an inner periphery thereof to detect a torque applied to the rotating shaft. The detection coil is formed with a coil assembly to form a bridged circuit, and the coil assembly is formed with a flexible substrate coil disposed on a whole inner periphery of the magnetic core.
摘要翻译： 一种磁致伸缩扭矩传感器，其具有：绕中心轴线旋转的旋转轴，所述旋转轴具有磁致伸缩特性; 以及在所述旋转轴的外周上以规定距离配置的圆筒形磁芯，所述圆筒形磁芯具有设置在其内周上的检测线圈，以检测施加到所述旋转轴的转矩。 检测线圈形成有线圈组件以形成桥接电路，并且线圈组件形成有设置在磁芯的整个内周上的柔性衬底线圈。
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公开(公告)号：US20070012122A1
公开(公告)日：2007-01-18
申请号：US11390122
申请日：2006-03-28
IPC分类号： G01N19/08
CPC分类号： G01L3/104
摘要： A torque sensor 1 is provided with two shafts 3, 4 (input shaft 3 and output shaft 4) which constitute a shaft member 2, which is a torque detection object, an elastic member 5 which connects the shafts 3 and 4 coaxially, and a torsion angle of the elastic member 5 is detected as a torque which affects on the shaft member 2. The torque sensor 1 is provided with a hard magnetic member 6 which generates a magnetic flux therearound, a pair of first soft magnetic members 7, 8 which constitute a first magnetic circuit H1 together with the hard magnetic member 6 to change a reluctance by torsion of the elastic member 5, a pair of second soft magnetic members 9, 10 which constitute a second magnetic circuit H2 together with the hard magnetic member 6 to keep the reluctance constant, and a flux detection means 12 which detects a flux density of the second magnetic circuit H2 that varies in accordance with a torsion angle of the elastic member 5.
摘要翻译： 扭矩传感器1设置有构成转矩检测对象的轴构件2，同轴地连接轴3和4的弹性构件5的两个轴3,4（输入轴3和输出轴4）和 检测弹性构件5的扭转角作为影响轴构件2的扭矩。扭矩传感器1设置有产生磁通的硬磁性构件6，一对第一软磁性构件7,8 与硬磁体6一起构成第一磁路H 1，以通过弹性部件5的扭转改变磁阻，构成第二磁路H 2的一对第二软磁体9,10与硬磁性体 6以保持磁阻恒定;以及磁通检测装置12，其检测根据弹性构件5的扭转角度变化的第二磁路H 2的磁通密度。
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公开(公告)号：US20050104686A1
公开(公告)日：2005-05-19
申请号：US10508832
申请日：2003-03-20
申请人： Naofumi Yoneda , Moriyasu Miyazaki , Tetsu Ohwada , Hideyuki Oh-Hashi , Koji Yamanaka , Kazutomi Mori , Yukio Ikeda , Toshiyuki Horie , Akio Iida , Yutaka Ozaki
发明人： Naofumi Yoneda , Moriyasu Miyazaki , Tetsu Ohwada , Hideyuki Oh-Hashi , Koji Yamanaka , Kazutomi Mori , Yukio Ikeda , Toshiyuki Horie , Akio Iida , Yutaka Ozaki
CPC分类号： H01P1/2131 , H01P1/2138
摘要： The present invention includes: a first main waveguide 1; a T-branch circuit 3 connected thereto; a first low-pass filter 5 connected thereto; a band-pass filter 7 connected to the first T-branch circuit 3; a first converter 8 connected to the first low-pass filter 5 for converting transmission lines between a waveguide and a microwave integrated circuit; an amplifier 10 connected to the first converter and structured by the microwave integrated circuit; a second converter 9 connected thereto for converting transmission lines between a waveguide and the microwave integrated circuit; a second low-pass filter 6 connected thereto; a second T-branch circuit 4 connected to the second low-pass filter and the band-pass filter 7; and a second main waveguide 2 connected to the second T-branch circuit.
摘要翻译： 本发明包括：第一主波导1; 与其连接的T分支电路3; 与其连接的第一低通滤波器5; 连接到第一T分支电路3的带通滤波器7; 连接到第一低通滤波器5的第一转换器8，用于转换波导和微波集成电路之间的传输线; 连接到第一转换器并由微波集成电路构成的放大器10; 连接到其上的用于转换波导和微波集成电路之间的传输线的第二转换器9; 与其连接的第二低通滤波器6; 连接到第二低通滤波器和带通滤波器7的第二T分支电路4; 以及连接到第二T分支电路的第二主波导2。
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公开(公告)号：US06873208B2
公开(公告)日：2005-03-29
申请号：US10069664
申请日：2001-06-29
申请人： Shintaro Shinjo , Kazutomi Mori , Hiroyuki Joba , Hiroaki Nagano , Mitsuru Motizuki , Yukio Ikeda , Noriharu Suematsu
发明人： Shintaro Shinjo , Kazutomi Mori , Hiroyuki Joba , Hiroaki Nagano , Mitsuru Motizuki , Yukio Ikeda , Noriharu Suematsu
CPC分类号： H03F3/1935 , H03F1/0261 , H03F1/0266 , H03F1/302 , H03F3/193
摘要： A high-frequency amplifying unit 2 in which a steep gain variation developed according to a change in the amplitude of input high-frequency signal is suppressed is provided. It amplifies an input high-frequency signal with a plurality of transistors 12-1 to 12-N at the same time a measuring circuit 27 measures amplitude of the input high-frequency signal, and a bias control circuit 26 continuously controls a bias applied to each transistors 12-1 to 12-N according to the value of amplitude measured by the measuring circuit 27. Thus it is possible to suppress a steep gain variation produced according to a variation in the amplitude of input high-frequency signal.
摘要翻译： 提供一种高频放大单元2，其中抑制了根据输入的高频信号的振幅的变化而产生的陡峭的增益变化。 它同时用多个晶体管12-1至12-N放大输入高频信号，同时测量电路27测量输入的高频信号的幅度，偏置控制电路26连续地控制施加到 每个晶体管12-1至12-N根据由测量电路27测量的振幅值。因此，可以抑制根据输入的高频信号的振幅的变化而产生的陡峭的增益变化。
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