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    • 1. 发明公开
    • SATELLITE MULTIBAND ANTENNA UNIT
    • 卫星多频天线单元
    • EP3183775A1
    • 2017-06-28
    • EP14830538.6
    • 2014-08-22
    • Eutelsat SA
    • LOHREY, ThomasBREITSAMETER, KlausSTRAUSS, Georg Emanuel August
    • H01Q15/00H01Q19/17H01Q19/19H01Q19/13H01Q5/45
    • H01Q19/132H01Q5/45H01Q15/0026H01Q15/0033H01Q19/17H01Q19/192
    • The invention relates to a satellite multi-band antenna unit comprising a main reflector; a frequency selective reflective unit; a first feed connected to a first low noise down converter, said first feed being located in a first location for receiving radiation in a first frequency band, said radiation in the first frequency band comprising a plurality of incident beams reflected from said main reflector and transmitted through said frequency selective reflective unit; a second feed connected to a second low noise down converter, said second feed being located in a second location for receiving radiation in a second frequency band lower than said first frequency band, said radiation in the second frequency band comprising a plurality of incident beams reflected from said main reflector and from said frequency selective unit; and a transmitter connected to one of said first or second feed for transmitting uplink radiation to said main reflector. Said frequency selective reflective unit comprises at least two electrically conductive plates (30') facing each other, each plate having an array of spaced apart apertures (31 '). The spaced apart apertures (31') of each plate have inner dimensions (Ax1 increasing with an angle of the incident beams.
    • 本发明涉及一种卫星多频带天线单元,其包括主反射器; 频率选择性反射单元; 连接到第一低噪声降频转换器的第一馈源,所述第一馈源位于第一位置,用于接收第一频带中的辐射,所述第一频带中的所述辐射包括从所述主反射器反射的多个入射光束并被传输 通过所述频率选择反射单元; 连接到第二低噪声下变频器的第二馈源,所述第二馈源位于第二位置,用于接收低于所述第一频段的第二频段的辐射,所述第二频段的辐射包括反射的多个入射光束 来自所述主反射器和来自所述频率选择单元; 以及连接到所述第一或第二馈源中的一个以将上行辐射传输到所述主反射器的发射器。 所述频率选择性反射单元包括至少两个彼此面对的导电板(30'),每个板具有间隔开的孔(31')的阵列。 每个板的间隔开的孔(31')具有内部尺寸(Ax1随着入射光束的角度而增加。
    • 2. 发明公开
    • TRACKING ANTENNA SYSTEM HAVING MULTIBAND SELECTABLE FEED
    • VERFOLGUNG VON天线虫MIT MEHRBANDIGERAUSWÄHLBARERSPEISUNG
    • EP3100320A1
    • 2016-12-07
    • EP15743468.9
    • 2015-01-28
    • Sea Tel, Inc. (DBA Cobham Satcom)
    • WONG, LarryGUAN, Wei-jungPHILIPPOU, Glafkos, YianniBLANEY, Peter
    • H01Q13/02
    • H01Q19/192H01Q1/34H01Q3/02H01Q3/20H01Q5/45H01Q15/16H01Q19/132H01Q19/17H01Q25/007
    • A tracking antenna system for use in a plurality of discrete radio frequency (RF) spectrums includes a stabilized antenna support configured to direct and maintain the antenna in alignment with a communications satellite; a reflector mounted on the stabilized antenna support, the reflector reflecting radio waves along a first RF path; a first feed for gathering radio waves within a first of the discrete RF spectrums traveling from the reflector; a sub-reflector movable between first and second positions, the first position outside the first RF path and the second position in the first RF path to redirect radio waves traveling from the reflector along the first RF path to a second RF path; a second feed for gathering radio waves within a second of the discrete RF spectrums redirected along the second RF path; and an actuator for moving the sub-reflector between the first and second positions.
    • 用于多个离散射频(RF)频谱的跟踪天线系统包括被配置为引导和维持天线与通信卫星对准的稳定天线支架; 安装在所述稳定天线支架上的反射器,所述反射器沿着第一RF路径反射无线电波; 用于在从反射器行进的第一离散RF频谱内收集无线电波的第一馈送; 在第一和第二位置之间移动的子反射器,第一RF路径外的第一位置和第一RF路径中的第二位置,以将从反射器行进的无线电波沿着第一RF路径重定向到第二RF路径; 用于在沿着第二RF路径重定向的离散RF频谱的一秒的范围内收集无线电波的第二馈送; 以及用于在第一和第二位置之间移动副反射器的致动器。
    • 3. 发明公开
    • ANTENNA APPARATUS
    • 天线装置
    • EP2940796A1
    • 2015-11-04
    • EP13869348.6
    • 2013-07-17
    • NEC Corporation
    • TAKAHASHI, Yoshihide
    • H01Q19/18H01Q17/00
    • H01Q19/192H01Q1/1228H01Q13/02H01Q19/191
    • An antenna device capable of performing precise positioning by using a small number of components and having a low side-lobe characteristic is provided. An antenna device incudes a primary radiator (3), a main-reflector (2), a sub-reflector (5), and a holding section (4) that fixedly maintains relative positions and directions of the sub-reflector (5) and the main-reflector (2). The holding section (4) includes a side part (42) in an integrated manner, the side part (42) being configured to enclose at least a part of a radio-wave path extending from the primary radiator (3) to the sub-reflector (5) as a shroud.
    • 提供一种能够通过使用少量部件来执行精确定位并具有低旁瓣特性的天线装置。 天线装置包括固定地保持副反射器(5)的相对位置和方向的主辐射器(3),主反射器(2),副反射器(5)和保持部分(4) 主反射器(2)。 所述保持部(4)一体地具有侧部(42),所述侧部(42)构成为包围从所述一次散热器(3)延伸至所述副散热器(3)的无线电波路径的至少一部分, 反射器(5)作为遮罩。
    • 6. 发明公开
    • Reconfigurable reflector for electromagnetic waves
    • Wiederkonfigurierbarer ReflektorfürRadiofrequenzwellen
    • EP2040330A1
    • 2009-03-25
    • EP07291125.8
    • 2007-09-21
    • AGENCE SPATIALE EUROPEENNE
    • Scolamiero, Lucio GerardoSabbadini, Marco
    • H01Q1/28H01Q3/01H01Q15/14H01Q15/16H01Q19/19G02B26/08
    • H01Q1/288G02B7/008G02B26/0825H01Q3/01H01Q15/144H01Q15/147H01Q15/16H01Q19/192
    • A reconfigurable reflector for electromagnetic waves, comprising: a rigid support element (10) having a front surface (13); an elastically deformable reflective membrane (30) lying over the front surface of said rigid support element; and a plurality of linear actuators (20) for deforming said reflective membrane by operating on predetermined points thereof; wherein said linear actuators are embedded within said rigid support element, and have shafts (22) protruding by the front surface thereof for operating on predetermined points of said elastically deformable reflective membrane.
      Preferably, the rigid support element comprises a reflector dish having a sandwich structure having a honeycomb core (11) made of CFRP or aluminum, in which the linear actuators are embedded by conventional potting techniques.
      Antenna system comprising such a reconfigurable reflector, possibly operating as a subreflector (SR), and spacecraft telecommunication payload comprising such an antenna system.
    • 一种用于电磁波的可重构反射器,包括:具有前表面(13)的刚性支撑元件(10); 位于所述刚性支撑元件的前表面上的可弹性变形的反射膜(30); 以及多个线性致动器(20),用于通过在其预定点上操作来使所述反射膜变形; 其中所述线性致动器嵌入在所述刚性支撑元件内,并且具有由其前表面突出的轴(22),用于在所述可弹性变形的反射膜的预定点上操作。 优选地,刚性支撑元件包括具有夹层结构的反射器盘,其具有由CFRP或铝制成的蜂窝芯(11),其中线性致动器通过常规灌封技术嵌入。 包括可能作为子反射器(SR)操作的这种可重构反射器的天线系统以及包含这种天线系统的航天器电信有效载荷。
    • 7. 发明公开
    • Steerable antenna system with fixed feed source
    • Steuerbares Antennensystem mit fester Strahlungsquelle
    • EP1414110A1
    • 2004-04-28
    • EP02292622.4
    • 2002-10-23
    • EMS Technologies Canada, Limited
    • Amyotte, EricGimersky, MartinRicherd, Jean-Daniel
    • H01Q19/19H01Q19/185H01Q19/10H01Q3/20H01Q3/08
    • H01Q19/104H01Q3/08H01Q3/20H01Q19/185H01Q19/192
    • A steerable antenna system (10) for transmitting and/or receiving an electromagnetic signal (14) to a relatively moving target (T) includes a hyperbolic subreflector (20) secured to a frame (22) rotatably mounted on a support structure (12) via an elevation motor (24) and a feed source (30) located at a first focal point (F1) of the subreflector (20) for illuminating (14) the same. The source (30), fixed to the structure (12), has a source axis (A) pointing at the subreflector (20). A parabolic reflector (40) having a focal point in common with the second focal point (F2) of the subreflector (20) to transfer the signal (14) between the same and a planar reflector (50) is secured to the frame (22) and has a beam axis (B). The planar reflector (50) having a normal axis (C) intersecting the beam axis (B) with an angle (α) is rotatably mounted on the frame (22) via a x-elevation motor (52) to transfer the signal (14) between the parabolic reflector (40) and the target (T). The system (10) may include a controller (60) connected to the motors (24, 52) to control the system (10) to steer at the target (T) anywhere within a full spherical angular range.
    • 可旋转地安装在支撑结构(12)上的C形框架(22)支撑双曲面副反射器(20),沿着源轴线(A)的双频双圆极化馈源(30)和抛物面反射器(40) )和垂直于源轴线的沿着光束轴线(B)的平面反射器(50)。 步进电机(24,52)分别沿着光源和光束轴旋转框架。
    • 10. 发明公开
    • Gregorian antenna system
    • 格雷戈里天线
    • EP1020952A1
    • 2000-07-19
    • EP00100731.9
    • 2000-01-14
    • TRW Inc.
    • Chandler, Charles W.Junker, Gregory P.Peebles, Ann L.
    • H01Q19/10
    • H01Q25/007H01Q1/288H01Q19/192H04B7/18515Y10S343/02
    • An antenna system comprising a feed array, a subreflector and a main reflector which are oriented to define a offset gregorian antenna geometry. The feed array is comprised of a plurality of separate feeds which are aligned on a predetermined contour. Each feed array is coupled to a feed network which acts to combine the illumination beams of clusters of a preselected number of feeds to produce a plurality of composite illumination beams. Each composite illumination beam is directed to be incident upon a separate predetermined location on the subreflector which directs the composite illumination beams and directed towards the main reflector. Each composite illumination beam is reflected by the main reflector in a preselected direction so that each composite illumination beam forms an antenna beam that impinges a predetermined coverage area on the Earth. Each antenna beam defines a separate coverage cell in the coverage area, wherein the position and orientation of the feeds, the subreflector and the main reflector provides antenna beams over a full Earth field of view coverage area where each antenna beam is approximately symmetrically shaped.
    • 一种天线系统,包括馈送阵列,子反射器和主反射器,其被定向以限定偏移格里尔天线几何形状。 进料阵列由在预定轮廓上对准的多个单独进料组成。 每个馈送阵列耦合到馈电网络,其用于组合预选数量的馈送的簇的照明光束以产生多个复合照明光束。 每个复合照明光束被引导入子反射器上的单独的预定位置,该反射器引导复合照明光束并指向主反射器。 每个复合照明光束被主反射器以预选的方向反射,使得每个复合照明光束形成一个天线光束,该天线光束撞击地球上的预定覆盖区域。 每个天线波束在覆盖区域中定义单独的覆盖小区,其中馈送,子反射器和主反射器的位置和取向在全地球视场覆盖区域上提供天线波束,其中每个天线波束近似对称地成形。