利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

44 条记录 (耗时 0.031 秒)

    Amplifier gain and phase stabilizer
    1.
    发明授权
    Amplifier gain and phase stabilizer 有权
    放大器增益和相位稳定器

    公开(公告)号：US07558541B2

    公开(公告)日：2009-07-07

    申请号：US11001978

    申请日：2004-12-01

    申请人： Harold A. Rosen ,  James D. Thompson

    发明人： Harold A. Rosen ,  James D. Thompson

    IPC分类号： H01Q11/12

    CPC分类号： H04B7/18515 ,  H03F1/0205 ,  H03F1/32 ,  H03F1/3282 ,  H03F3/211 ,  H03F3/24 ,  H03F3/602 ,  H03F3/604

    摘要： Methods and apparatus are provided for stabilizing the phase and gain of an amplifier in a power pooling arrangement. A pilot signal combining a reference carrier frequency with a reference sideband frequency is passed through the amplifier via an adjustable phase shifter and an adjustable attenuator in the amplifier input line. A portion of the amplified pilot signal is coupled from the output of the amplifier and mixed with the reference frequency. The remaining audio frequency signal is compared to a reference (input) audio signal to determine phase and gain changes during amplification in the amplifier. Phase and gain control signals are developed from this comparison, and are fed back to the adjustable phase shifter and adjustable attenuator, respectively, in order to compensate an incoming signal for phase and gain variations in the amplifier.

    摘要翻译： 提供了用于稳定功率集成装置中的放大器的相位和增益的方法和装置。 将参考载波频率与参考边带频率组合的导频信号通过放大器中的可调移相器和可调衰减器在放大器输入线中传递。 放大的导频信号的一部分从放大器的输出端耦合，并与参考频率混频。 将剩余音频信号与参考（输入）音频信号进行比较，以确定放大器放大期间的相位和增益变化。 相位和增益控制信号从该比较开发，并分别反馈给可调移相器和可调衰减器，以补偿输入信号中放大器的相位和增益变化。

    Plural level beam-forming netowrk
    3.
    发明授权
    Plural level beam-forming netowrk 失效
    多级波束形成netowrk

    公开(公告)号：US5012254A

    公开(公告)日：1991-04-30

    申请号：US411810

    申请日：1989-09-25

    申请人： James D. Thompson

    发明人： James D. Thompson

    IPC分类号： H01Q21/22 ,  H01Q25/00 ,  H03F3/60

    CPC分类号： H01Q25/00 ,  H01Q21/22 ,  H03F3/602 ,  H03F2200/198

    摘要： A beam-forming network (98) employs one or a plurality of first transmission delay lines (168, 170, 172, 174) for receiving transmit signals (T1-T4) applied thereto, and a plurality of second transmission lines (176), which serve as line summers. Each of the first transmission delay lines has first and second portions (168a, 168b; 170a, 170b; 172a; 172b; 174a; 174b) spaced apart from one another so as to define first and second levels displaced from one another. The set of second transmission lines (176) are arranged in first and second subsets (176a, 176b) which are respectively disposed adjacent to the first and second levels and respectively associated with the first and second portions of the first lines, such that the first subset of second lines is coupled to the first portion of the first lines, and the second subset of the second lines is coupled to the second portion of the first lines. Further, selected ones of the first subset of second lines are disposed adjacent to selected ones of the second subset of second lines in order to facilitate simple and orderly routing of transmission lines (126, 128, 130) between the beam-forming network and a novel equal power amplifier system (100) described herein.

    摘要翻译： 波束形成网络（98）采用一个或多个第一传输延迟线（168,170,172,174）来接收施加到其上的发射信号（T1-T4）和多个第二传输线（176）， 作为线夏天。 每个第一传输延迟线具有彼此间隔开的第一和第二部分（168a，168b; 170a，170b; 172a; 172b; 174a; 174b），以便限定彼此偏移的第一和第二级。 第二传输线（176）的组被布置在第一和第二子集（176a，176b）中，第一和第二子集（176a，176b）分别设置成与第一和第二电平相邻并且分别与第一和第二电平的第一和第二部分相关联， 第二线的子集耦合到第一线的第一部分，并且第二线的第二子集耦合到第一线的第二部分。 此外，第二行的第一子集中的选定的第二行被布置为与第二行的第二子集中的所选择的子集相邻，以便于在波束形成网络和一个或多个波束形成网络之间简单且有序地路由传输线（126,128,130） 新颖的等功率放大器系统（100）。

    Plural level beam-forming network
    4.
    发明授权
    Plural level beam-forming network 失效
    多级波束形成网络

    公开(公告)号：US4924234A

    公开(公告)日：1990-05-08

    申请号：US34460

    申请日：1987-03-26

    申请人： James D. Thompson

    发明人： James D. Thompson

    IPC分类号： H01Q3/40 ,  H01Q21/22 ,  H01Q25/00 ,  H03F3/60

    CPC分类号： H01Q21/22 ,  H01Q25/00 ,  H03F3/602 ,  H03F2200/198

    摘要： A beam-forming network (98) employs one or a plurality of first transmission delay lines (168, 170, 172, 174) for receiving transmit signals (T1-T4) applied thereto, and a plurality of second transmission lines (176), which serve as line summers. Each of the first transmission delay lines has first and second portions (168a, 168b; 170a, 170b; 172a, 172b; 174a, 174b) spaced apart from one another so as to define first and second levels displaced from one another. The set of second transmission lines (176) are arranged in first and second subsets (176a, 176b) which are respectively disposed adjacent to the first and second levels and respectively associated with the first and second portions of the first lines, such that the first subset of second lines is coupled to the first portion of the first lines, and the second subset of the second lines is coupled to the second portion of the first lines. Further, selected ones of the first subset of second lines are disposed adjacent to selected ones of the second subset of second lines in order to facilitate simple and orderly routing of transmission lines (126, 128, 130) between the beam-forming network and a novel equal power amplifier system (100) described herein.

    摘要翻译： 波束形成网络（98）采用一个或多个第一传输延迟线（168,170,172,174）来接收施加到其上的发射信号（T1-T4）和多个第二传输线（176）， 作为线夏天。 每个第一传输延迟线具有彼此间隔开的第一和第二部分（168a，168b; 170a，170b; 172a，172b; 174a，174b），以便限定彼此偏移的第一和第二级。 第二传输线（176）的组被布置在第一和第二子集（176a，176b）中，第一和第二子集（176a，176b）分别设置成与第一和第二电平相邻并且分别与第一和第二电平的第一和第二部分相关联， 第二线的子集耦合到第一线的第一部分，并且第二线的第二子集耦合到第一线的第二部分。 此外，第二行的第一子集中的选定的第二行被布置为与第二行的第二子集中的所选择的子集相邻，以便于在波束形成网络和一个或多个波束形成网络之间简单且有序地路由传输线（126,128,130） 新颖的等功率放大器系统（100）。

    Method for designing sector beam antennas
    5.
    发明授权
    Method for designing sector beam antennas 失效
    设计扇形束天线的方法

    公开(公告)号：US4757325A

    公开(公告)日：1988-07-12

    申请号：US912702

    申请日：1986-09-26

    申请人： James D. Thompson ,  Gregory S. Czuba

    发明人： James D. Thompson ,  Gregory S. Czuba

    IPC分类号： H01Q13/02 ,  H01Q19/13 ,  H01Q19/10

    CPC分类号： H01Q19/13 ,  H01Q13/025

    摘要： An improved method for designing sector beam antennas. The method is used to provide a sector beam antenna having a feed horn with a cross sectional azimuth dimension and a cross sectional elevational dimension which are optimized to irradiate a reflector to transmit a signal over a coverage area such that the gain-area-product of the transmitted signal is maximized.

    摘要翻译： 一种改进的扇形波束天线设计方法。 该方法用于提供具有横截面方位尺寸和横截面正视尺寸的馈电喇叭的扇形束天线，其被优化以照射反射器以在覆盖区域上传输信号，使得增益面积乘积 发送信号最大化。

    Lunar communications system
    7.
    发明授权
    Lunar communications system 有权
    月球通讯系统

    公开(公告)号：US08639181B2

    公开(公告)日：2014-01-28

    申请号：US11968271

    申请日：2008-01-02

    申请人： Glenn N. Caplin ,  James D. Thompson

    发明人： Glenn N. Caplin ,  James D. Thompson

    IPC分类号： H04B7/185

    CPC分类号： H04B7/18513

    摘要： A system for communications between a lunar or planetary surface and the Earth may include a first communications satellite adapted to be positioned in a predetermined orbit relative to a celestial body. A first antenna may be mounted on the first communications satellite. The first antenna may include a predetermined beam shape for communications between the first communications satellite and an asset on the lunar or planetary surface. A second antenna may also be mounted on the first communications satellite. The second antenna may include a selected beam shape for communications between the first communications satellite and the Earth. A communications system may be included for relaying communications between the first and second antennas.

    摘要翻译： 用于月球或行星表面与地球之间通信的系统可以包括适于相对于天体定位在预定轨道中的第一通信卫星。 第一天线可以安装在第一通信卫星上。 第一天线可以包括用于第一通信卫星和月球或行星表面上的资产之间的通信的预定波束形状。 第二天线也可以安装在第一通信卫星上。 第二天线可以包括用于第一通信卫星和地球之间的通信的选择的波束形状。 可以包括用于中继第一和第二天线之间的通信的通信系统。

    Categorized document bases
    8.
    发明授权
    Categorized document bases 有权
    分类文件库

    公开(公告)号：US07917519B2

    公开(公告)日：2011-03-29

    申请号：US11586306

    申请日：2006-10-25

    申请人： Steven O. Kimbrough ,  Ian C. MacMillan ,  John P. Ranieri ,  James D. Thompson

    发明人： Steven O. Kimbrough ,  Ian C. MacMillan ,  John P. Ranieri ,  James D. Thompson

    IPC分类号： G06F7/00 ,  G06F17/30

    CPC分类号： G06F17/30707

    摘要： A method of managing information comprises generating a categorized document base. Generating the document base comprises providing a pre-existing classification of things other than documents, providing a source collection of documents, and automatically assessing the documents using Information Retrieval techniques to assign at least some of the documents to one or more taxa of the classification. For each taxon in the classification one or more numerical scores are assigned, based at least in part on a composition, makeup or constitution of the documents assigned to the taxon of the categorized document base.

    摘要翻译： 管理信息的方法包括生成分类文档库。 生成文档基础包括提供除文档之外的事物的预先分类，提供文档的源集合，以及使用信息检索技术自动评估文档，以将至少一些文档分配给分类的一个或多个分类。 对于分类中的每个分类，至少部分地基于分配给分类文档基础的分类单的文档的构成，组成或构成来分配一个或多个数值分数。