Reconfigurable transmission antenna
    1.
    发明授权
    Reconfigurable transmission antenna 失效
    可重配置的发射天线

    公开(公告)号:US5289193A

    公开(公告)日:1994-02-22

    申请号:US61425

    申请日:1993-02-04

    IPC分类号: H01Q25/00 H01Q3/02 H01Q3/22

    CPC分类号: H01Q25/007

    摘要: The invention relates to a reconfigurable transmission antenna comprising a reflector (10) for energy focussing, and an array (11) of source elements situated in the focal region of the reflector, so that the electromagnetic field is synthesized in said region, wherein a spot (SPi) is the result of radiation from a number of sources that is fixed and identical for all the spots; any one source participating at any one time in radiating one spot at the most, and high-level switching being used to reconfigure the spots by selecting the sources that participate in a given spot. Application to the space telecommunications field in particular.

    摘要翻译: 本发明涉及一种包括用于能量聚焦的反射器(10)和位于反射器聚焦区域中的源元件阵列(11)的可重新配置的发射天线,从而在所述区域中合成电磁场,其中点 (SPi)是来自多个源的辐射的结果,其固定并且对于所有斑点是相同的; 任何一个来源都可以在任何一个时间最多地辐射一个地点,并且通过选择参与给定地点的来源,用于重新配置点的高级别切换。 尤其适用于太空电讯领域。

    High capacity multibeam antenna with electronic scanning in transmission
    2.
    发明授权
    High capacity multibeam antenna with electronic scanning in transmission 失效
    具有电子扫描传输的高容量多波束天线

    公开(公告)号:US5734349A

    公开(公告)日:1998-03-31

    申请号:US587486

    申请日:1996-01-17

    IPC分类号: H01Q25/00 H01Q3/22

    CPC分类号: H01Q25/007

    摘要: The invention provides a multibeam antenna comprising: an array 11 of N.sub.e elementary sources 31; energy-focusing optical means comprising a reflector 10 or a lens; the array being situated in the focal zone of said focusing means: and a feed and control circuit cooperating with the N.sub.e primary sources 31 to produce N.sub.b beams each generated from a subgroup of the primary sources, some of which are shared between overlapping beams; the feed and control circuit comprising phase shifter means and attenuator means, said means being organized in N.sub.e feed channels for said N.sub.e primary sources, each feed channel including specific means for acting on the phase and the amplitude of an excitation signal in each feed channel; wherein each required beam is generated by the multibeam antenna solely by acting on the phase and the amplitude of the excitation delivered to each elementary source forming a portion of said beam; and wherein the number of sources N.sub.i contributing to a beam i, 1.ltoreq.i.ltoreq.N.sub.b, varies and is determined as a function of the characteristics desired for said beam i. The antenna is applicable to satellite telecommunications, in particular for on-board antennas of high capacity.

    摘要翻译: 本发明提供一种多波束天线,包括:Ne基本源31的阵列11; 能量聚焦光学装置包括反射器10或透镜; 所述阵列位于所述聚焦装置的焦点区域中;以及馈送和控制电路,与所述Ne初级源31配合,以产生每个从所述主要源的子组生成的Nb波束,其中一些在重叠波束之间共享; 所述馈送和控制电路包括移相器装置和衰减器装置,所述装置被组织在所述Ne初级源的Ne馈送通道中,每个馈送通道包括用于作用在每个馈送通道中的激励信号的相位和幅度的特定装置; 其中每个所需光束仅由多波束天线通过作用于形成所述光束的一部分的传递到每个基本光源的激光的相位和振幅而产生; 并且其中对光束i贡献的源Ni的数量变化,并且被确定为所述光束i所需的特性的函数。 该天线适用于卫星电信,特别适用于高容量的车载天线。

    Method and a system for locating ground equipment transmitting via
satellites
    3.
    发明授权
    Method and a system for locating ground equipment transmitting via satellites 失效
    用于定位通过卫星传输的地面设备的方法和系统

    公开(公告)号:US5859610A

    公开(公告)日:1999-01-12

    申请号:US948485

    申请日:1997-10-10

    IPC分类号: G01S3/30 G01S3/74 H04B7/185

    CPC分类号: G01S3/74 G01S3/30

    摘要: A method and a system for locating ground equipment transmitting signals to a geostationary satellite, the method and the system being based on identifying the arrival directions of such signals within the coverage zone of the satellite. In the method, the arrival directions of the signals are identified by using a beam-forming active-module array antenna system on board the satellite, the system being controlled to define simultaneous beams in the radiation pattern of the antenna, the beams being superposed on one another with small offsets, the superposed beams corresponding to a limited analysis zone being illuminated within the coverage zone of the satellite, the system further being associated with a digital processing program which identifies the arrival directions of the signals which are received in the analysis zone.

    摘要翻译: 一种用于定位将地面设备传输到对地静止卫星的方法和系统,所述方法和系统基于识别卫星覆盖区域内的这些信号的到达方向。 在该方法中,通过使用卫星上的波束形成有源模块阵列天线系统来识别信号的到达方向,该系统被控制以在天线的辐射图中定义同时的波束,波束叠加在 彼此具有小的偏移,对应于在卫星的覆盖区域内的有限分析区域的叠加的波束,系统还与识别在分析区域中接收的信号的到达方向的数字处理程序相关联 。

    Antenna which is electronically reconfigurable in transmission
    4.
    发明授权
    Antenna which is electronically reconfigurable in transmission 失效
    在传输中可电子地重新配置的天线

    公开(公告)号:US4965587A

    公开(公告)日:1990-10-23

    申请号:US325796

    申请日:1989-03-20

    摘要: The present invention relates to an antenna which is electronically reconfigurable in transmission. The antenna comprises an array (11) of elementary sources, an energy-focusing reflector (10), with the array (11) being situated in the focal zone of the reflector, and control and feed electronics, the electronics comprising an amplifier stage (22) constituted by amplifiers (24) and including at least one generalized coupler disposed at the outputs of the amplifiers (24), and beam-forming circuits (20, 21) each corresponding to a transmitted beam, with the amplitude and relative phase of the signals leaving said circuits being controlled by respective adjustable phase shifters and adjustable attenuators. The invention is particularly applicable to space telecommunications.

    摘要翻译: 本发明涉及一种在传输中可电子重构的天线。 天线包括基本源的阵列(11),能量聚焦反射器(10),其中阵列(11)位于反射器的焦点区域中,以及控制和馈电电子元件,该电子器件包括放大器级( 由放大器(24)构成并且包括设置在放大器(24)的输出处的至少一个通用耦合器以及每个对应于透射光束的波束形成电路(20,21),振幅和相对相位 离开所述电路的信号由相应的可调移相器和可调衰减器控制。 本发明特别适用于空间通信。

    Receiving antenna for multibeam coverage
    7.
    发明申请
    Receiving antenna for multibeam coverage 有权
    接收天线多波束覆盖

    公开(公告)号:US20050088356A1

    公开(公告)日:2005-04-28

    申请号:US10503097

    申请日:2003-01-17

    申请人: Regis Lenormand

    发明人: Regis Lenormand

    摘要: The invention relates to a receiving antenna for satellite telecommunications. More specifically, the invention relates to an active antenna comprising a network of elementary sources which is positioned at the focal point of a focusing reflector. According to the invention, said network of sources is disposed on a more or less spherical, concave surface S. The aforementioned arrangement can be used to: (i) improve the efficiency of the optics and (ii) enable the use of polarisation duplexers behind surface S in order to increase the spectral efficiency of the antenna.

    摘要翻译: 本发明涉及一种用于卫星通信的接收天线。 更具体地,本发明涉及一种有源天线,其包括位于聚焦反射器的焦点处的基本源网络。 根据本发明,所述源极网络设置在或多或少的球形凹表面S.上述布置可用于:(i)提高光学器件的效率,以及(ii)使得能够使用偏振双工器 表面S以增加天线的光谱效率。

    Antenna beam coverage reconfiguration
    8.
    发明授权
    Antenna beam coverage reconfiguration 失效
    天线波束覆盖重构

    公开(公告)号:US5355138A

    公开(公告)日:1994-10-11

    申请号:US118664

    申请日:1993-09-10

    IPC分类号: H04B7/15 H04B7/204 H04B7/185

    CPC分类号: H04B7/2041

    摘要: A earth station calling another station sends a link setting-up a request to a control station. The control station memorizes in a transformed reference system the contour of a global geographical coverage including all the earth stations together with the earth positions of the latter. Subsequent to the request, the control station simulates the optimum evolution of the radioelectric coverages of the satellite so as to include, both on emitting and receiving, the calling and called stations in respective coverages with guaranteed minimum antenna gains. The total power of the satellite and the positions of the stations are notably considered in this simulation. If the result of simulation is positive, an emission authorization is sent by the control station to the calling station, and satellite antennae are reconfigured by phase shift and power control values emitted by the control station.

    摘要翻译: 呼叫另一台站的地面站向控制站发送一个链接建立请求。 控制站在变换后的参考系统中记录包括所有地球站在内的全球地理覆盖物的轮廓以及后者的地球位置。 在请求之后,控制站模拟卫星的无线电覆盖物的最佳演进,以便包括发射和接收具有保证的最小天线增益的相应覆盖区中的呼叫和被叫站。 在该模拟中,特别考虑卫星的总功率和站的位置。 如果模拟结果为正,则由控制站向呼叫站发送发射授权,并通过控制站发出的相移和功率控制值对卫星天线进行重新配置。

    Electronically scanned antenna
    9.
    发明授权
    Electronically scanned antenna 失效
    电子扫描天线

    公开(公告)号:US4965588A

    公开(公告)日:1990-10-23

    申请号:US325716

    申请日:1989-03-20

    摘要: The invention relates to an electronically scanned antenna comprising an array (11) of elementary sources, an energy-focusing reflector (10), and feed and control electronics; the array (11) is situated in the focal zone of the reflector, while the feed and control electronics includes a plurality of attenuator and phase shifter circuits (24) controlled by a control unit (27), with said circuits having their outputs connected to at least one combiner (28). The invention is particularly suitable for space telecommunications.

    摘要翻译: 本发明涉及一种电子扫描天线,其包括基本源的阵列(11),能量聚焦反射器(10)以及馈电和控制电子装置; 阵列(11)位于反射器的焦点区域中,而馈电和控制电子器件包括由控制单元(27)控制的多个衰减器和移相器电路(24),其中所述电路的输出连接到 至少一个组合器(28)。 本发明特别适用于空间通信。

    Antenna pointing device capable of scanning in two orthogonal directions
    10.
    发明授权
    Antenna pointing device capable of scanning in two orthogonal directions 失效
    能够在两个正交方向扫描的天线指向装置

    公开(公告)号:US4821045A

    公开(公告)日:1989-04-11

    申请号:US204949

    申请日:1988-06-07

    IPC分类号: H01Q3/08 H01Q3/12 H01Q19/18

    CPC分类号: H01Q3/12

    摘要: An antenna pointing device capable of scanning in two orthogonal directions comprises a fixed source (20) emitting a radio beam (21) and associated with a main offset reflector (10) and a secondary offset reflector (11), together with a set of at least three mirrors (14, 15, and 17) including a first mirror (14) aligned with the secondary reflector (11), and in which the second and third mirrors (15 and 17) are fixed to respective rotary drive mechanisms (16 and 18) for rotating them about two axes (.DELTA., .DELTA.') extending in orthogonal directions. The main and the secondary reflectors (10, 11) and the first and the second mirrors (14, 15) are mechanically fixed to one another in order to constitute a moving assembly. The second mechanism (18) drives both the third mirror (17) and said moving assembly (10, 11, 14, and 15).

    摘要翻译: 能够在两个正交方向上扫描的天线指向装置包括发射无线电波束(21)并与主偏移反射器(10)和次偏移反射器(11)相关联的固定源(20),以及一组在 至少三个反射镜(14,15和17)包括与第二反射器(11)对准的第一反射镜(14),并且其中第二和第三反射镜(15和17)固定到相应的旋转驱动机构(16和 18),用于使它们围绕在正交方向上延伸的两个轴线(DELTA,DELTA')旋转。 为了构成移动组件,主反射器(10,11)和第一和第二反射镜(14,15)彼此机械固定。 第二机构(18)驱动第三反射镜(17)和所述移动组件(10,11,14和15)。