中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

21 records (took 0.028 seconds)

    Amplifying apparatus
    2.
    发明授权
    Amplifying apparatus 失效
    放大装置

    公开(公告)号：US07133466B2

    公开(公告)日：2006-11-07

    申请号：US10999207

    申请日：2004-11-24

    Applicant: Satoshi Maruyama

    Inventor： Satoshi Maruyama

    IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49

    CPC classification number: H03F1/3241 ,  H03F1/3247 ,  H03F1/52 ,  H03F3/211 ,  H03G1/0088 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/504

    Abstract: The present invention provides an amplifying apparatus including, two amplifiers for receiving input signals in common and for outputting their respective amplified signals, a combiner for combining the output signals of the two amplifiers and for outputting a combined signal, the amplifying apparatus which inhibit the distortion component in the output of amplifiers in the transition state. This amplifying apparatus comprises, a predistortion unit for determining a distortion compensation component based on the output of the combiner and for predistorting the input based on the determined distortion compensation component, and a gain control unit for attenuating the inputs to set lower than in the steady state by reducing the gain in the transition from two amplifier operation to one amplifier operation, or in the transition from one amplifier operation to two amplifier operation, or at the time of removal or attachment the amplifiers.

    Abstract translation: 本发明提供了一种放大装置，包括两个用于共同接收输入信号并用于输出它们各自的放大信号的放大器，用于组合两个放大器的输出信号并用于输出组合信号的组合器，抑制失真的放大装置 放大器输出中的分量处于过渡状态。 该放大装置包括：预失真单元，用于基于组合器的输出确定失真补偿分量，并且用于基于所确定的失真补偿分量对输入进行预失真;以及增益控制单元，用于将输入衰减成低于稳态 通过减小从两个放大器操作到一个放大器操作的转变中的增益，或者在从一个放大器操作到两个放大器操作的转换中，或者在去除或附接放大器时的增益。

    Amplifying apparatus
    3.
    发明申请
    Amplifying apparatus 失效
    放大装置

    公开(公告)号：US20050141640A1

    公开(公告)日：2005-06-30

    申请号：US10999207

    申请日：2004-11-24

    Applicant: Satoshi Maruyama

    Inventor： Satoshi Maruyama

    IPC: H03F1/32 ,  H03F1/52 ,  H03F3/21 ,  H03G1/00 ,  H03G3/20 ,  H03G3/30 ,  H04K1/02

    CPC classification number: H03F1/3241 ,  H03F1/3247 ,  H03F1/52 ,  H03F3/211 ,  H03G1/0088 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/504

    Abstract: The present invention provides an amplifying apparatus including, two amplifiers for receiving input signals in common and for outputting their respective amplified signals, a combiner for combining the output signals of the two amplifiers and for outputting a combined signal, the amplifying apparatus which inhibit the distortion component in the output of amplifiers in the transition state. This amplifying apparatus comprises, a predistortion unit for determining a distortion compensation component based on the output of the combiner and for predistorting the input based on the determined distortion compensation component, and a gain control unit for attenuating the inputs to set lower than in the steady state by reducing the gain in the transition from two amplifier operation to one amplifier operation, or in the transition from one amplifier operation to two amplifier operation, or at the time of removal or attachment the amplifiers.

    Abstract translation: 本发明提供了一种放大装置，包括两个用于共同接收输入信号并用于输出它们各自的放大信号的放大器，用于组合两个放大器的输出信号并用于输出组合信号的组合器，抑制失真的放大装置 放大器输出中的分量处于过渡状态。 该放大装置包括：预失真单元，用于基于组合器的输出确定失真补偿分量，并且用于基于所确定的失真补偿分量来预失真输入;以及增益控制单元，用于将输入衰减成低于稳态 通过减小从两个放大器操作到一个放大器操作的转变中的增益，或者在从一个放大器操作到两个放大器操作的转换中，或者在去除或附接放大器时的增益。

    System and method for minimizing dissipation in RF power amplifiers
    4.
    发明申请
    System and method for minimizing dissipation in RF power amplifiers 有权
    用于最小化RF功率放大器散热的系统和方法

    公开(公告)号：US20030034839A1

    公开(公告)日：2003-02-20

    申请号：US09931737

    申请日：2001-08-20

    Inventor： Peter John Poggi ,  Tim Dittmer ,  George Cabrera

    IPC: H03G003/20

    CPC classification number: H03G3/3042 ,  H03F1/0222 ,  H03F1/0233 ,  H03F1/0244 ,  H03F1/0277 ,  H03F3/211 ,  H03G3/004 ,  H03G2201/103 ,  H03G2201/504 ,  H03G2201/508 ,  H03G2201/702

    Abstract: The variable power supply to an amplifier in an electrical circuit is dynamically controlled through the use of a lookup table responsive to one or more operating conditions of the electrical circuit. The lookup table is indexed by one or more of the operating conditions and the amount of amplification to be applied to an input signal to the amplifier is determined. One embodiment of the invention comprises a television transmitter circuit including a power amplifier circuit capable of amplifying a variable frequency COFDM or 8VSB input signal where the amount of amplification applied to the input signal is dynamically controlled through the use of a lookup table as a function of the frequency of the input signal.

    Abstract translation: 通过使用响应于电路的一个或多个操作条件的查找表来动态地控制电路中的放大器的可变电源。 查找表由一个或多个操作条件索引，并确定要施加到放大器的输入信号的放大量。 本发明的一个实施例包括一种电视发射机电路，其包括能够放大可变频率COFDM或8VSB输入信号的功率放大器电路，其中通过使用查找表作为函数来动态地控制施加到输入信号的放大量 输入信号的频率。

    Variable gain amplifier
    8.
    发明申请
    Variable gain amplifier 有权
    可变增益放大器

    公开(公告)号：US20050258896A1

    公开(公告)日：2005-11-24

    申请号：US11096854

    申请日：2005-04-01

    Applicant: Thomas Bardsley ,  Matthew Cordrey-Gale ,  James Mason ,  Philip Murfet ,  Gareth Nicholls

    Inventor： Thomas Bardsley ,  Matthew Cordrey-Gale ,  James Mason ,  Philip Murfet ,  Gareth Nicholls

    IPC: H03F1/02 ,  H03F1/14 ,  H03F3/21 ,  H03F3/45 ,  H03F3/68 ,  H03F3/72 ,  H03G1/00 ,  H03G3/00 ,  H03G3/20

    CPC classification number: H03F3/45475 ,  H03F1/0277 ,  H03F3/211 ,  H03F3/45179 ,  H03F3/72 ,  H03F2203/45138 ,  H03G1/0029 ,  H03G1/0088 ,  H03G3/001 ,  H03G2201/103 ,  H03G2201/504

    Abstract: A method of varying the gain of an amplifier and an amplifier array are provided. The amplifier array includes two or more amplifier stages (201, 202) connected in parallel with each amplifier stage having a gain control means. Input signal means (203, 204) are provided for each amplifier stage with the input signals of the amplifier stages being of different amplitude. Means for enabling and disabling an amplifier stage (216) are provided and means for summing the outputs of the enabled amplifier stages obtain an output signal (212). The gain of the amplifier array has a range from a low gain setting with a first amplifier stage (202) enabled, through increasing gain settings as the gain of the first amplifier stage is increased from a minimum to a maximum gain, a second amplifier stage (201) can then be enabled in addition to the first amplifier stage and the gain of the second amplifier stage increased from a minimum to a maximum gain, further amplifier stages are enabled as available up to a maximum gain setting for the amplifier array. Each amplifier stage that is enabled has a decreasingly attenuated input signal and a final amplifier stage to be enabled has a full input signal (203).

    Abstract translation: 提供了改变放大器和放大器阵列的增益的方法。 放大器阵列包括与具有增益控制装置的每个放大器级并联连接的两个或更多个放大器级（201,202）。 为每个放大器级提供输入信号装置（203,204），放大器级的输入信号具有不同的幅度。 提供了用于启用和禁用放大器级（216）的装置，用于对使能的放大器级的输出进行求和以获得输出信号（212）的装置。 放大器阵列的增益具有从具有第一放大级（202）使能的低增益设置的范围，通过当第一放大器级的增益从最小增益增加到最大增益时增加增益设置，第二放大器级 （201）除了第一放大器级以及第二放大器级的增益从最小增益增加到最大增益之外，还可以使能另外的放大器级，直至达到放大器阵列的最大增益设置。 启用的每个放大器级具有递减衰减的输入信号，并且待使能的最终放大器级具有完整输入信号（203）。

Patent Agency Ranking