Repeaters for wireless communication systems
    2.
    发明授权
    Repeaters for wireless communication systems 有权
    无线通信系统中继器

    公开(公告)号:US07577398B2

    公开(公告)日:2009-08-18

    申请号:US10181109

    申请日:2001-01-16

    IPC分类号: H04B7/15

    摘要: A flat-panel repeater includes a housing having a pair of oppositely facing surfaces, at least one antenna element mounted to each of the surfaces for radiating energy in a direction opposite to that of an antenna element mounted to the other of the surfaces, and an electronic circuit mounted within the housing and operatively coupling signals between at least one antenna element on each of the oppositely facing surfaces of the module. Isolation between the antennas on opposite sides of the repeater is improved by various techniques, such as use of adaptive cancellation which removes a significant portion of the feedback signal power, therefore increasing the total system isolation by the same amount. This additional isolation can be used to achieve greater system gain, and therefore significantly extend the range of the system. The repeater may also include a beamforming arrangement for creating a desired antenna pattern of one antenna relative to a base station and a desired antenna pattern of the other antenna relative to subscriber equipment.

    摘要翻译: 平板中继器包括具有一对相对表面的壳体,至少一个天线元件安装到每个表面上,用于沿与安装到另一个表面的天线元件的方向相反的方向辐射能量,以及 电子电路安装在壳体内并且可操作地将信号耦合在模块的每个相对面的表面上的至少一个天线元件之间。 通过各种技术来改进中继器相对侧上的天线之间的隔离,例如使用去除反馈信号功率的相当大部分的自适应消除,从而将总系统隔离增加相同的量。 这种额外的隔离可以用于实现更大的系统增益,因此显着地扩展了系统的范围。 中继器还可以包括波束形成装置,用于相对于基站创建一个天线的期望天线方向图,并且相对于用户设备产生另一天线的期望天线方向图。

    Communications system with tandem scrambling devices
    3.
    发明授权
    Communications system with tandem scrambling devices 失效
    具有串联加扰设备的通信系统

    公开(公告)号:US4914696A

    公开(公告)日:1990-04-03

    申请号:US232265

    申请日:1988-08-15

    CPC分类号: H04K1/04

    摘要: An intermediate scrambling device for a radiotelephone system is disclosed by which it is possible to establish and maintain scrambled communications between an originating scrambler terminal and the most distant companion scrambler on the circuit. The intermediate scrambler may establish and maintain the scrambled communications if it is the most distant scrambler, or it may become transparent to a more distant scrambler.

    摘要翻译: 公开了一种用于无线电话系统的中间加扰装置,通过该中间加扰装置可以建立和维护始发加扰器终端与电路上最远的配对扰频器之间的加扰通信。 如果中间扰码器是最遥远的加扰器,则可以建立和维护加扰的通信,或者它可能对于更远的加扰器变得透明。

    Method and apparatus for retransmitting received satellite signals inside a structure
    8.
    发明授权
    Method and apparatus for retransmitting received satellite signals inside a structure 有权
    用于在结构内重传接收的卫星信号的方法和装置

    公开(公告)号:US07068973B1

    公开(公告)日:2006-06-27

    申请号:US09513543

    申请日:2000-02-25

    IPC分类号: H04B7/15 H04B7/185

    摘要: The present invention provides a method of retransmitting a GPS signal inside a structure. The method includes receiving the GPS signal, amplifying the GPS signal to produce a second GPS signal, and retransmitting the second GPS signal inside the structure either directly or indirectly through an intermediate link in one of the unlicensed bands. The present invention may also be used for the retransmission of digital radio signals inside a structure.

    摘要翻译: 本发明提供一种在结构内重传GPS信号的方法。 该方法包括接收GPS信号,放大GPS信号以产生第二GPS信号,并且通过非许可频带之一中的中间链路直接或间接地重传结构内的第二GPS信号。 本发明还可以用于结构内的数字无线电信号的重传。