Method and system for forming desired radiation pattern with array
antenna
    1.
    发明授权
    Method and system for forming desired radiation pattern with array antenna 失效
    用阵列天线形成所需辐射图的方法和系统

    公开(公告)号:US5081463A

    公开(公告)日:1992-01-14

    申请号:US457489

    申请日:1989-12-27

    IPC分类号: H01Q3/26 H01Q21/20

    CPC分类号: H01Q21/20 H01Q3/2605

    摘要: An array antenna system and a method of exciting an array antenna wherein antenna elements are arranged on a curved surface. A desired radiation pattern with an undesirable sidelobe being suppressed is provided by compensating for the irregular density of antenna elements and by matching the null positions of the actual radiation pattern and an ideal Taylor radiation pattern.

    摘要翻译: 阵列天线系统和激励阵列天线的方法,其中天线元件布置在弯曲表面上。 通过补偿天线元件的不规则密度并通过匹配实际辐射图案的零位置和理想的泰勒辐射图来提供具有不期望的旁瓣被抑制的期望辐射图。

    Antenna system
    2.
    发明授权
    Antenna system 失效
    天线系统

    公开(公告)号:US5184140A

    公开(公告)日:1993-02-02

    申请号:US660692

    申请日:1991-02-25

    IPC分类号: H01Q3/26

    CPC分类号: H01Q3/26

    摘要: Disclosed herein is an antenna system comprising a plurality of element antennas, a plurality of variable phase shifters and a plurality of variable amplitude type devices connected to the plurality of element antennas respectively, and an arithmetic unit used to perform the arithmetical operation of the excitation amplitude and phase for exciting each of the plurality of element antennas. The arithmetic unit includes the four means and performs the arithmetical operation of the excitation amplitude and phase used to define a desired radiation pattern composed by each of the element antennas with respect to a preset allowable variation width D of the excitation amplitude. Since the arithmetic unit serves to fix the excitation amplitude and perform the arithmetical operation of the excitation phase separately, the antenna system capable of performing the arithmetical operation of the excitation amplitude and phase for obtaining a desired radiation pattern with respect to the preset allowable variation width D of the excitation amplitude, and obtaining a desired radiation pattern even when the allowable variation width D of the excitation amplitude is given, can be realized.

    摘要翻译: 本文公开了一种天线系统,包括分别连接到多个元件天线的多个元件天线,多个可变移相器和多个可变幅度型器件,以及用于执行激励振幅的算术运算的算术单元 以及用于激励多个元件天线中的每一个的相位。 算术单元包括四个装置,并且执行激励振幅和相位的算术运算,该激励振幅和相位相对于激励振幅的预设允许变化幅度D来定义由每个元件天线组成的期望辐射图。 由于算术单元用于固定激励振幅并分别执行激励阶段的算术运算,所以天线系统能够执行激励振幅和相位的算术运算,以获得相对于预设允许变化宽度的期望辐射图 D的激励振幅,并且即使在给出激励振幅的容许变化幅度D时,也可以获得期望的辐射图。

    Deployable truss structure
    3.
    发明授权
    Deployable truss structure 失效
    可部署的桁架结构

    公开(公告)号:US5931420A

    公开(公告)日:1999-08-03

    申请号:US025150

    申请日:1998-02-18

    摘要: An deployable truss structure is herein disclosed in which the deterioration of an deployable reliability with the increase in the number of constitutional parts is prevented and in which even if the number of the mechanical parts of the whole structure is increased, a stable deployable reliability is established with regard to one deploying operation of the structure. A dividable asynchronous deployable truss structure is constituted of a plurality of segments and a segment binding deployable truss structure. The dividable asynchronous deployable truss structure independently carries out the deployment as one deployment unit comprising the segment and two side structures in the segment binding deployable truss structure directly bound thereto for every deployment unit, whereby the number of parts involved in one deploying operation can be decreased and a high deployment reliability can be ensured.

    摘要翻译: 本文公开了一种可部署的桁架结构,其中防止了随着结构部件数量的增加而部署的可靠性的恶化,并且即使整个结构的机械部件的数量增加,也可建立稳定的可展开的可靠性 关于结构的一次部署操作。 可分割的异步可展开的桁架结构由多个段和段结合可部署的桁架结构构成。 可分割的可异步部署的桁架结构独立地执行部署作为一个部署单元,该部署单元包括在每个部署单元中直接绑定到其中的段可装配桁架结构中的段和两个侧结构,由此可以减少一次部署操作中涉及的部件的数量 并且可以确保高的部署可靠性。