利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

44 条记录 (耗时 0.025 秒)

    Amplifier
    3.
    发明申请
    Amplifier 审中-公开
    放大器

    公开(公告)号：US20090206927A1

    公开(公告)日：2009-08-20

    申请号：US12385865

    申请日：2009-04-22

    申请人： Yoichi Okubo ,  Masaki Suto ,  Yasuhiro Takeda ,  Masaru Adachi

    发明人： Yoichi Okubo ,  Masaki Suto ,  Yasuhiro Takeda ,  Masaru Adachi

    IPC分类号： H03F3/68

    CPC分类号： H03F1/0288

    摘要： There is provided an amplifier for combining outputs of a plurality of amplifying circuits to generate an amplifier output. The amplifier includes a first amplifying circuit for operating a first amplifying device in class-AB, wherein the first amplifying circuit is one among the plurality of the amplifying circuits; a second amplifying circuit for operating a second amplifying device in class-B or class-C, wherein the second amplifying circuit is one among the plurality of the amplifying circuits; and a summing node at which an output of the first amplifying circuit is combined with an output of the second amplifying circuit via a first impedance transformer containing a transmission line of an electrical length other than λ/4. The second amplifying device is connected to the summing node via an output matching circuit and a second impedance transformer containing a transmission line.

    摘要翻译： 提供了用于组合多个放大电路的输出以产生放大器输出的放大器。 放大器包括用于操作AB类中的第一放大装置的第一放大电路，其中第一放大电路是多个放大电路之一; 用于在B类或C类中操作第二放大装置的第二放大电路，其中第二放大电路是多个放大电路之一; 以及求和节点，第一放大电路的输出通过包含除λ/ 4以外的电长度的传输线的第一阻抗变换器与第二放大电路的输出相结合。 第二放大装置经由输出匹配电路和包含传输线的第二阻抗变换器连接到求和节点。

    Amplifying system
    4.
    发明申请
    Amplifying system 有权
    放大系统

    公开(公告)号：US20090051438A1

    公开(公告)日：2009-02-26

    申请号：US11920629

    申请日：2006-05-17

    申请人： Yoichi Okubo ,  Toshio Nojima ,  Yasuhiro Takeda ,  Manabu Nakamura ,  Masaru Adachi

    发明人： Yoichi Okubo ,  Toshio Nojima ,  Yasuhiro Takeda ,  Manabu Nakamura ,  Masaru Adachi

    IPC分类号： H03F1/07 ,  H03F1/56

    CPC分类号： H03F1/0288 ,  H03F1/56 ,  H03F3/602 ,  H03F2200/423

    摘要： The performance of an amplifying system is improved by achieving adequate matching. The amplifying system for amplifying signals includes distributing means 1 that distribute a signal, a carrier amplifier 2 that amplifies the distributed first signal in Class AB, a peak amplifier 4 that amplifies the distributed second signal in Class B or Class C, a first transmission line having a given electric length and being connected to an output of the carrier amplifier, a second transmission line having a given electric length and being connected to an output of the peak amplifier, and a combining end 18 for combining an output of the first transmission line and an output of the second transmission line. An impedance of the combining end is differentiated from a parallel impedance of load impedances of the carrier amplifier and the peak amplifier at the maximum power converted respectively by the first transmission line and the second transmission line, or is set as a parallel impedance in which the load impedances of the carrier amplifier and the peak amplifier at the maximum power are changed.

    摘要翻译： 通过实现充分匹配，可以提高放大系统的性能。 用于放大信号的放大系统包括分配信号的分配装置1，放大AB类中分布的第一信号的载波放大器2，放大B类或C类中分布的第二信号的峰值放大器4，第一传输线 具有给定的电长度并连接到载波放大器的输出，具有给定电长度并连接到峰值放大器的输出的第二传输线，以及组合端18，用于组合第一传输线的输出 和第二传输线的输出。 组合端的阻抗与通过第一传输线和第二传输线分别转换的最大功率的载波放大器和峰值放大器的负载阻抗的并联阻抗不同，或者被设置为并联阻抗，其中 载波放大器和最大功率峰值放大器的负载阻抗发生变化。

    Doherty amplifier with improved linearity
    5.
    发明授权
    Doherty amplifier with improved linearity 有权
    Doherty放大器具有提高的线性度

    公开(公告)号：US07427895B1

    公开(公告)日：2008-09-23

    申请号：US11581418

    申请日：2006-10-17

    申请人： Yoichi Okubo ,  Yasuhiro Takeda ,  Manabu Nakamura ,  Naoki Hongo ,  Masaru Adachi

    发明人： Yoichi Okubo ,  Yasuhiro Takeda ,  Manabu Nakamura ,  Naoki Hongo ,  Masaru Adachi

    IPC分类号： H03F3/68

    CPC分类号： H03F1/0288 ,  H03F3/602

    摘要： A first control unit controls a bias applied to the peak amplifier to (a) make a peak amplifier operate as class C when the level of the input signal is lower than a first threshold value, to (b) make the peak amplifier operate as class AB with a second conduction angle substantially equal to a first conduction angle, when the level of the input signal is higher than a second threshold value higher than the first threshold value, and to (c) make the peak amplifier operate as class AB with a third conduction angle smaller than the first conduction angle, when the level of the input signal is not less than the first threshold value and not more than the second threshold value.

    摘要翻译： 第一控制单元控制施加到峰值放大器的偏置，以便（a）当输入信号的电平低于第一阈值时使峰值放大器工作为C类，以使（b）使峰值放大器工作为类 AB，当输入信号的电平高于高于第一阈值的第二阈值时，具有基本上等于第一导通角的第二导通角，以及（c）使峰值放大器作为AB类工作，其中a 当输入信号的电平不小于第一阈值且不大于第二阈值时，第三导通角小于第一导通角。

    Non-linear distortion detection method and distortion compensation amplifying device
    6.
    发明申请
    Non-linear distortion detection method and distortion compensation amplifying device 有权
    非线性失真检测方法和失真补偿放大装置

    公开(公告)号：US20080187035A1

    公开(公告)日：2008-08-07

    申请号：US12078507

    申请日：2008-04-01

    申请人： Manabu Nakamura ,  Yasuhiro Takeda ,  Yoichi Okubo ,  Masaru Adachi ,  Naoki Hongo

    发明人： Manabu Nakamura ,  Yasuhiro Takeda ,  Yoichi Okubo ,  Masaru Adachi ,  Naoki Hongo

    IPC分类号： H04L27/01 ,  H03F1/32

    CPC分类号： H03F1/32 ,  H03F1/0288 ,  H03F1/3247 ,  H03F3/245 ,  H03F2200/207

    摘要： A conventional power amplifying device has a problem that when a signal band is widened, sampling frequency for distortion detection is increased and an FFT calculation amount of a distortion compensation unit is increased, which increase a circuit size and power consumption. The present invention provides a non-linear distortion detection method and a distortion compensation amplifying device capable of suppressing increase of the circuit size and the power consumption even if the signal band is widened. A signal obtained by feeding back an output of a power amplifier is sampled by an A/D converter. An equalizer of a distortion detection unit uses an input signal d(n) of a predistorter as a reference symbol to detect an equalization error e(n) of the orthogonal demodulation signal u(n). An absolute value averaging unit outputs an absolute value of the equalization error e(n) which has been temporally averaged to E(n) as a distortion value to a control unit. According to the distortion value, the control unit adaptively controls the predistorter to perform distortion compensation.

    摘要翻译： 传统的功率放大装置存在如下问题：当信号频带变宽时，失真检测的采样频率增加，并且失真补偿单元的FFT计算量增加，这增加了电路尺寸和功耗。 本发明提供即使信号频带变宽也能够抑制电路尺寸和功耗的增加的非线性失真检测方法和失真补偿放大装置。 通过反馈功率放大器的输出而获得的信号由A / D转换器采样。 失真检测单元的均衡器使用预失真器的输入信号d（n）作为参考符号来检测正交解调信号u（n）的均衡误差e（n）。 绝对值平均单元将对时间平均的均衡误差e（n）的绝对值作为失真值输出到控制单元。 根据失真值，控制单元自适应地控制预失真器进行失真补偿。

    Crystalline polymer exhibiting solid phase transition phenomenon and use thereof
    8.
    发明申请
    Crystalline polymer exhibiting solid phase transition phenomenon and use thereof 审中-公开
    显示固相变现象的结晶聚合物及其用途

    公开(公告)号：US20060155088A1

    公开(公告)日：2006-07-13

    申请号：US10563041

    申请日：2004-07-07

    申请人： Ryo Konishi ,  Yoichi Okubo ,  Kenji Fukunaga ,  Tadatoshi Aridomi

    发明人： Ryo Konishi ,  Yoichi Okubo ,  Kenji Fukunaga ,  Tadatoshi Aridomi

    IPC分类号： C08F136/00

    CPC分类号： C08C19/06 ,  C08F36/06 ,  C09K5/063 ,  H01C7/028

    摘要： A crystalline polymer exhibiting crystal transition in the solid phase state, which satisfies the relationship defined by the formula 150>ΔHtr>1.6Ttr−3.5 (1) (wherein ΔHtr represents the endotherm (J/g) accompanying crystal transition and Ttr represents the crystal transition temperature (° C.)). This crystalline polymer has a weight average molecular weight of 600 thousand or less and a crystal transition temperature (Ttr) of 67° C. or below. Since this crystalline polymer has a low phase transition temperature, a high heat of a crystal transition, and a high melting point, the potential utility thereof as a switching element or a thermal storage material used at around normal environment temperatures (20 to 50° C.) is high.

    摘要翻译： 在固相状态下呈现晶体转变的结晶聚合物，其满足式150> DeltaHtr> 1.6Ttr-3.5（1）所定义的关系（其中ΔHtr表示伴随晶体转变的吸热（J / g），Ttr表示晶体 转变温度（℃））。 该结晶聚合物的重均分子量为60万以下，结晶转变温度（Ttr）为67℃以下。 由于该结晶聚合物具有低的相变温度，高的结晶转变热和高熔点，因此作为在正常环境温度（20〜50℃）附近使用的开关元件或储热材料的潜在用途 。） 高。

    Distortion compensator
    9.
    发明授权
    Distortion compensator 有权
    失真补偿器

    公开(公告)号：US06856196B2

    公开(公告)日：2005-02-15

    申请号：US10600594

    申请日：2003-06-23

    申请人： Yoichi Okubo ,  Kiyoshi Funada ,  Yasuo Sera ,  Masaki Suto ,  Masato Horaguchi ,  Kazuyoshi Sato ,  Toshio Takada ,  Tetsuhiko Miyatani ,  Naoki Hongo

    发明人： Yoichi Okubo ,  Kiyoshi Funada ,  Yasuo Sera ,  Masaki Suto ,  Masato Horaguchi ,  Kazuyoshi Sato ,  Toshio Takada ,  Tetsuhiko Miyatani ,  Naoki Hongo

    IPC分类号： H03F1/32 ,  H04B1/04 ,  H03G3/20 ,  H03F1/26

    CPC分类号： H03F1/3247 ,  H03F1/3282 ,  H03F2200/102

    摘要： A distortion compensator that compensates for distortion arising in a main amplifier 10 that amplifies a signal effectively compensates for third order distortion which is unbalanced between the higher frequency band and lower frequency band. An amplitude detector 3 detects the level of a signal subject to amplification and a signal level change direction detection means 7 detects the direction of change in the level of the signal. A signal level change control means 4-8 stores the correspondence between the signal level and the mode of changing the signal in order to compensate for distortion for when the direction of change in the signal level is positive and when it is negative, and controls a signal change means 9 so that the amplitude and phase of the signal is changed in a mode of changing the signal corresponding to the detected direction of change in the signal level and the detected signal level. A signal change control content updating means 11-13 updates the content of this correspondence so that the distortion contained in the signal after amplification is reduced.

    摘要翻译： 补偿放大信号的主放大器10中出现的失真的失真补偿器有效地补偿在较高频带和较低频带之间不平衡的三阶失真。 振幅检测器3检测经放大的信号的电平，信号电平变化方向检测装置7检测信号电平的变化方向。 信号电平变化控制装置4-8存储信号电平和改变信号的模式之间的对应关系，以便当信号电平的变化方向为正时和当它为负时补偿失真，并且控制一个 信号改变装置9，使得信号的幅度和相位在改变与检测到的信号电平方向和检测信号电平相对应的信号的模式下改变。 信号改变控制内容更新装置11-13更新该对应的内容，使得放大后的信号中包含的失真减少。

    Distortion reducing circuit
    10.
    发明授权
    Distortion reducing circuit 失效
    失真减少电路

    公开(公告)号：US06753728B2

    公开(公告)日：2004-06-22

    申请号：US10153630

    申请日：2002-05-24

    申请人： Yoichi Okubo ,  Kiyoshi Funada ,  Masaki Suto ,  Masato Horaguchi ,  Toshio Takada ,  Naoki Hongo

    发明人： Yoichi Okubo ,  Kiyoshi Funada ,  Masaki Suto ,  Masato Horaguchi ,  Toshio Takada ,  Naoki Hongo

    IPC分类号： H03F126

    CPC分类号： H03F1/3229 ,  H03F1/32 ,  H03F1/3247 ,  H03F2200/102 ,  H03F2201/3206

    摘要： A distortion reducing circuit compensates an upper side third-order distortion and a lower side third-order distortion produced by an amplifier for amplifying a fundamental signal including multiple frequency components. The distortion reducing circuit includes a second harmonic reflection coefficient regulation circuit, installed at an output side of the amplifier, for regulating reflection coefficients for multiple frequency components included in a second harmonic signal to have a constant value.

    摘要翻译： 失真减小电路补偿由用于放大包括多个频率分量的基本信号的放大器产生的上侧三阶失真和下侧三次失真。 失真减小电路包括安装在放大器的输出侧的二次谐波反射系数调节电路，用于调节包括​​在二次谐波信号中的多个频率分量的反射系数以具有恒定值。