Feed-forward amplifier of a type preventing unwanted waves from being
outputted in the initial operation
    1.
    发明授权
    Feed-forward amplifier of a type preventing unwanted waves from being outputted in the initial operation 失效
    一种防止在初始操作中输出不需要的波的前馈放大器

    公开(公告)号:US5515000A

    公开(公告)日:1996-05-07

    申请号:US346637

    申请日:1994-11-30

    IPC分类号: H03F1/00 H03F1/02 H03F1/32

    摘要: A feed-forward amplifier of a type preventing unwanted waves from being outputted in an initial operation suitable to a use in a radio transmitter-receiver in a radio communication system, aimed to reduce a loss in the course from an output of a main amplifier to an output of the apparatus by implementing an output control during the initial operation in the front stage of the main amplifier without switches having been heretofore used, further reducing a power consumption of the apparatus. The feed-forward amplifier of this invention is provided with a control unit which controls a pilot signal variably attenuating unit so as to gradually decrease an attenuation quantity of a pilot signal with use of results of detection conducted by a power source start-up detecting means and a main signal detecting means as timing information after a start-up of a power source of a main amplifier, and controls a main signal variably attenuating unit so as to gradually decrease an attenuation quantity of a main signal after the pilot signal variable attenuating unit has decreased the attenuation quantity of the pilot signal.

    摘要翻译: 一种防止不想要的波在适用于无线电通信系统中的无线电发射机 - 接收机中的初始操作中输出的类型的前馈放大器,目的在于减少从主放大器输出到 通过在没有开关的主放大器的前级中的初始操作期间实现输出控制的装置的输出,进一步降低了装置的功耗。 本发明的前馈放大器设置有控制单元,该控制单元使用由电源启动检测装置进行的检测结果来控制导频信号可变衰减单元,以逐渐降低导频信号的衰减量 以及主信号检测装置,作为在主放大器的电源启动之后的定时信息,并且控制主信号可变衰减单元,以便在导频信号可变衰减单元之后逐渐减小主信号的衰减量 降低了导频信号的衰减量。

    Parallel operation system of transmission amplifier
    2.
    发明授权
    Parallel operation system of transmission amplifier 有权
    传输放大器并联运行系统

    公开(公告)号:US07254377B2

    公开(公告)日:2007-08-07

    申请号:US10015369

    申请日:2001-12-12

    IPC分类号: H04B1/04

    摘要: A parallel operation system of transmission amplifiers enable the parallel running by the two distortion compensation amplifiers using the digital pre-distorter system and to provide a parallel operation system of the transmission amplifiers that makes it possible to switch to respective single running easily. The parallel operation system includes first and second transmission amplifiers which receive common input signals for outputting amplified signals from respective ones; and a coupling unit which combines outputs of the first and second transmission amplifiers, to provide as its output; the first and second transmission amplifiers each having a main amplifier; and a modulation unit disposed on the input side of the main amplifier; wherein the output of one of the modulation units included in the first and second transmission amplifiers is fed in common to the main amplifiers included in the first and second transmission amplifiers.

    摘要翻译: 传输放大器的并行操作系统使得能够通过使用数字预失真器系统的两个失真补偿放大器的并行运行,并且提供可以容易地切换到相应的单个运行的发送放大器的并行操作系统。 并行操作系统包括第一和第二发送放大器,其接收用于从相应输入信号输出放大信号的公共输入信号; 以及耦合单元,其组合第一和第二发送放大器的输出,以提供其输出; 第一和第二发送放大器各自具有主放大器; 以及调制单元,设置在所述主放大器的输入侧; 其中包括在第一和第二发送放大器中的调制单元之一的输出被共同馈送到包括在第一和第二发送放大器中的主放大器。

    Feed-forward amplifying device and method of controlling the same and
base station with feed-forward amplifying device
    3.
    发明授权
    Feed-forward amplifying device and method of controlling the same and base station with feed-forward amplifying device 失效
    前馈放大装置及使用前馈放大装置控制相同基站的方法

    公开(公告)号:US6148185A

    公开(公告)日:2000-11-14

    申请号:US594828

    申请日:1996-01-31

    摘要: The present invention relates to a feed-forward amplifying device suitable for radio communication systems such as digital automobile telephone. In the feed-forward amplifying device which includes a distortion extracting loop circuit unit including a main amplifier which amplifies a main signal in a main signal system, the distortion extracting loop circuit unit creating a distortion extracting signal by controlling the phase of the main signal the distortion extracting signal obtained by canceling the main signal component of an output from the main amplifier; and a distortion removing loop circuit unit arranged at the rear stage of the main amplifier, the distortion removing loop circuit unit producing only the main signal component from a signal in the main signal system at the rear stage of the main amplifier using the distortion extracting signal obtained by canceling the main signal component, the distortion extracting loop circuit unit executes phase control by shifting a phase control point where the main signal can be most canceled, thus creating the distortion extracting signal. This device can improve the power efficiency with a small back-up of the amplifier and stably produce a low-distortion amplified signal.

    摘要翻译: 本发明涉及一种适用于数字汽车电话等无线通信系统的前馈放大装置。 在包括失真提取环路电路单元的前馈放大装置中,包括放大主信号系统中的主信号的主放大器,失真提取回路电路单元通过控制主信号的相位来产生失真提取信号 通过消除来自主放大器的输出的主信号分量而获得的失真提取信号; 以及设置在主放大器的后级的失真消除环路电路单元,失真消除环路电路单元,使用失真提取信号仅在主放大器的后级的主信号系统中的信号中产生主信号分量 通过取消主信号分量获得,失真提取回路电路单元通过移位主信号可以被最多地取消的相位控制点来执行相位控制,从而创建失真提取信号。 该器件可以通过放大器的小型备份来提高功耗,并稳定地产生低失真放大信号。

    Feedforward amplifier
    4.
    发明授权
    Feedforward amplifier 失效
    前馈放大器

    公开(公告)号:US5898339A

    公开(公告)日:1999-04-27

    申请号:US912687

    申请日:1997-08-18

    IPC分类号: H03F1/32 H04J1/00 H03F1/26

    CPC分类号: H03F1/3235

    摘要: A feedforward amplifier having a distortion detection loop and a distortion elimination loop is provided that achieves increased accuracy, improved response, and stable operation. A variable attenuator is placed in front of a detector in a loop output stage, and the amount of attenuation in the variable attenuator is set large during a transient response period during the rising of the amplifier, and set small during a steady-state condition. The detection of the transition to the steady-state condition is accomplished, for example, by comparing the detector output with a prescribed threshold value. The width of perturbation is set large during a transient response period, and set small during a steady-state condition.

    摘要翻译: 提供具有失真检测回路和失真消除回路的前馈放大器,其实现了增加的精度,改进的响应和稳定的操作。 可变衰减器放置在环路输出级中的检测器的前面,并且在放大器的上升期间的瞬态响应周期期间可变衰减器中的衰减量被设置得很大,并且在稳态条件期间设置得较小。 例如,通过将检测器输出与规定的阈值进行比较来实现向稳态条件的转变的检测。 在瞬态响应期间扰动宽度设置较大,在稳态条件下设置较小。

    Lithium-ion secondary battery and method of charging lithium-ion secondary battery
    5.
    发明授权
    Lithium-ion secondary battery and method of charging lithium-ion secondary battery 有权
    锂离子二次电池及锂离子二次电池充电方法

    公开(公告)号:US08785047B2

    公开(公告)日:2014-07-22

    申请号:US11066247

    申请日:2005-02-25

    IPC分类号: H01M4/133 H01M4/587

    摘要: A lithium-ion secondary battery device comprises a positive electrode collector having a surface formed with a positive electrode active material layer containing a positive electrode active material; a negative electrode collector having a surface formed with a negative electrode active material layer containing a negative electrode active material; an electrically insulating porous separator; and an electrolyte containing a lithium salt and being in contact with the positive electrode active material layer, negative electrode active material layer, and separator. The negative electrode active material is a carbon material having a graphite structure. The amount of the carbon material supported by the negative electrode active material layer is 2.0 to 4.0 mg/cm2. The graphite structure in an X-ray diffraction pattern of the carbon material exhibits a peak intensity P101 of (101) plane and a peak intensity P100 of (100) plane having a ratio (P101/P100) of 2.0 to 2.8 therebetween.

    摘要翻译: 锂离子二次电池装置包括正极集电体,其具有由含有正极活性物质的正极活性物质层形成的表面; 具有由含有负极活性物质的负极活性物质层形成的表面的负极集电体; 电绝缘多孔分离器; 以及包含锂盐并与正极活性物质层,负极活性物质层和隔膜接触的电解质。 负极活性物质是具有石墨结构的碳材料。 由负极活性物质层支撑的碳材料的量为2.0〜4.0mg / cm 2。 碳材料的X射线衍射图中的石墨结构表现出(101)面的峰强度P101和(100)面的峰值强度P100(P101 / P100)为2.0〜2.8。

    Lithium secondary battery
    7.
    发明授权
    Lithium secondary battery 有权
    锂二次电池

    公开(公告)号:US07651815B2

    公开(公告)日:2010-01-26

    申请号:US10247511

    申请日:2002-09-20

    IPC分类号: H01M4/60 H01M6/16

    摘要: A lithium secondary battery comprising positive and negative electrodes both capable of occluding and releasing lithium ions, and a lithium ion conductive material which contains a compound of formula (1) exhibits improved characteristics including charge/discharge efficiency, low-temperature properties and cycle performance when (a) only one substituent group of R1, R2, R3 and R4 in formula (1) is alkyl, (b) the negative electrode-constituting material partially contains a carboxyl or hydroxyl group-bearing compound, and the lithium ion conductive material contains propylene carbonate, or (c) a positive electrode active material is a lithium-containing transition metal compound, a negative electrode active material is a carbonaceous material, and the lithium ion conductive material contains as a non-aqueous electrolysis solution a solvent mixture of propylene carbonate and ethylene carbonate in combination with a chain-like carbonate as a low-viscosity solvent

    摘要翻译: 包含能够吸留和释放锂离子的正极和负极的锂二次电池和含有式(1)化合物的锂离子传导性材料具有包括充放电效率,低温性能和循环性能在内的改善的特性, (a)式(1)中R1,R2,R3和R4只有一个取代基是烷基,(b)负极构成材料部分含羧基或含羟基化合物,锂离子导电材料含 碳酸丙烯酯,或(c)正极活性物质为含锂过渡金属化合物,负极活性物质为碳质材料,锂离子传导性材料含有作为非水电解液的丙烯的溶剂混合物 碳酸酯和碳酸亚乙酯与作为低粘度溶剂的链状碳酸酯组合

    Impeller manufacturing method and impeller
    10.
    发明申请
    Impeller manufacturing method and impeller 有权
    叶轮制造方法和叶轮

    公开(公告)号:US20080107539A1

    公开(公告)日:2008-05-08

    申请号:US11889161

    申请日:2007-08-09

    IPC分类号: F01D5/14 B21D53/78 B28B1/24

    摘要: The present invention provides a manufacturing method for an impeller with which molding and high-quality finishing can be performed extremely easily and quickly through resin molding using a die, and an impeller manufactured by the impeller manufacturing method. A metallic bush is disposed in a die, whereupon a resin material is injected through a gate in the die. A connecting portion between an unnecessary resin portion formed from residual resin material in the gate and a resin impeller main body molded around the bush is formed to be thin, and the unnecessary resin portion is removed from the impeller main body using pushing or withdrawing means.

    摘要翻译: 本发明提供一种用于叶轮的制造方法,通过使用模具的树脂成形以及通过叶轮制造方法制造的叶轮,能够非常容易且快速地进行成型和高质量的整理。 金属衬套设置在模具中,于是树脂材料通过模具中的浇口注入。 由浇口中的残留树脂材料形成的不需要的树脂部分和围绕衬套模制的树脂叶轮主体之间的连接部分形成为薄而不必​​要的树脂部分通过推压或取出装置从叶轮主体移除。