ARRAY ANTENNA WITH IRREGULAR MESH AND POSSIBLE COLD REDUNDANCY
    1.
    发明申请
    ARRAY ANTENNA WITH IRREGULAR MESH AND POSSIBLE COLD REDUNDANCY 有权
    阵列天线与不规则的网格和可能的冗余

    公开(公告)号:US20090303125A1

    公开(公告)日:2009-12-10

    申请号:US12095211

    申请日:2006-11-27

    IPC分类号: H01Q3/00 H01Q21/00

    CPC分类号: H01Q3/26 H01Q21/22

    摘要: A transmit and/or receive array antenna comprises an array (R) of sub-arrays (SR) of at least one radiating element (ER) and control means charged with controlling the amplitude and/or the phase of the radiofrequency signals to be transmitted or received in the form of waves by each of the sub-arrays (SR) so that they transmit or receive signals according to a chosen pattern. The sub-arrays (SR) comprise a mean number of radiating elements (ER) which increases from the center of the array (R) to its periphery, and are arranged with respect to one another so as to constitute an irregular mesh offering pattern sidelobes of low intensity and a high gain in a favored direction.

    摘要翻译: 发射和/或接收阵列天线包括至少一个辐射元件(ER)的子阵列(SR)的阵列(R),以及控制装置,其控制要发射的射频信号的幅度和/或相位 或以每个子阵列(SR)的波形形式接收,使得它们根据所选择的模式发送或接收信号。 子阵列(SR)包括从阵列(R)的中心到其周边增加的平均数量的辐射元件(ER),并且相对于彼此布置以构成不规则网格,提供图案旁瓣 低强度和高增益在有利的方向。

    Active antenna near field calibration method
    2.
    发明授权
    Active antenna near field calibration method 失效
    有源天线近场校准方法

    公开(公告)号:US5477229A

    公开(公告)日:1995-12-19

    申请号:US129374

    申请日:1993-09-30

    IPC分类号: H01Q3/26 H01Q3/00

    CPC分类号: H01Q3/267

    摘要: In a method of calibrating an active antenna the active elements of a transfer function matrix are measured using a near field probe for each radiating source of the antenna. The probe is placed in front of each source in succession and each source is excited in turn with the opposite phase and with all the other sources of the array excited normally. In the case of linear superposition of radiated fields, the measurements obtained by this method yield the elements of the transfer function matrix directly. This allows for phase and amplitude errors due to the components of the active antenna and for the effects of coupling between adjacent sources which modify the theoretical characteristics of the antenna. In the non-linear case the measurements are repeated and the matrix is obtained by iteration based on a comparison of the theoretical values used to control the antenna and the measured fields actually obtained. Measurements carried out on individual active modules prior to assembly of the antenna can be used in one variant of the method.

    摘要翻译: 在校准有源天线的方法中,使用用于天线的每个辐射源的近场探针来测量传递函数矩阵的有源元件。 将探头连续放置在每个源的前面,并且每个源依次被反相激励,并且阵列的所有其它源正常激发。 在辐射场的线性叠加的情况下,通过该方法获得的测量结果直接产生传递函数矩阵的元素。 这允许由于有源天线的组件以及修改天线的理论特性的相邻源之间的耦合的影响引起的相位和幅度误差。 在非线性情况下,重复测量,并且基于用于控制天线的理论值和实际获得的测量场的比较,通过迭代获得矩阵。 在组装天线之前对各个有源模块进行的测量可用于该方法的一个变型。

    High-yield active printed-circuit antenna system for frequency-hopping
space radar
    3.
    发明授权
    High-yield active printed-circuit antenna system for frequency-hopping space radar 失效
    高频激光打印电路天线系统

    公开(公告)号:US5206655A

    公开(公告)日:1993-04-27

    申请号:US665212

    申请日:1991-03-06

    摘要: A high-efficiency active printed-circuit antenna system for pulsed frequency-hopping space radar electronically scanned in two planes encompasses in its timing diagram the transmission of a horizontal polarization pulse, the reception of echoes from a previous horizontal polarization pulse, the transmission of a vertical polarization pulse and the reception of echoes from a previous vertical polarization pulse. The system comprises several thousand MMIC modules distributed over the antenna and each connected to a printed-circuit radiating element comprising a plurality of dual polarized square patches connected by microstrip lines which excite them with the same amplitude and the same phase at two perpendicular ports. Switching between the two ports procures transmission or reception with horizontal or vertical polarization.

    摘要翻译: 用于在两个平面中电子扫描的脉冲跳频空间雷达的高效率有源印刷电路天线系统在其时序图中包含水平极化脉冲的传输,来自先前水平极化脉冲的回波的接收, 垂直偏振脉冲和从先前的垂直偏振脉冲接收回波。 该系统包括分布在天线上的几千个MMIC模块,并且每个连接到印刷电路辐射元件,印刷电路辐射元件包括由微带线连接的多个双极化正方形贴片,它们以两个垂直端口以相同的幅度和相同的相位激发它们。 在两个端口之间切换采用水平或垂直极化的传输或接收。

    Reflector Array Antenna with Reconfigurable Shape Coverage with or Without Loader
    5.
    发明申请
    Reflector Array Antenna with Reconfigurable Shape Coverage with or Without Loader 有权
    具有可重构形状覆盖的反射器阵列天线,带或不带加载器

    公开(公告)号:US20070268192A1

    公开(公告)日:2007-11-22

    申请号:US11574391

    申请日:2005-07-21

    IPC分类号: H01Q19/06

    摘要: A reflector network antenna (A) comprising i) a source (S) delivering wave signals; ii) at least two reflector networks (RR1-RR9) which are different and independent and which both comprise at least two phase shifter cells which selectively phase shift the waves delivered by the source (S) and bring about a selected frequency phase dispersion thereof, said selective phase shifting and selective dispersion varying from one reflector network to another; and iii) a charging device (DC) which is coupled to the reflector networks (RR1-RR9) and which is used to place one of them in a selected position in relation to the source (S) such that the waves that it delivers are phase shifted and phase dispersed at a frequency imposed by said phase shifter cells in order to be reflected in a selected direction.

    摘要翻译: 一种反射器网络天线(A),包括:i)传送波信号的源(S); ii)至少两个不同且独立的反射器网络(RR 1 -RR 9),并且它们都包括至少两个移相器单元,其选择性地相移由源(S)传送的波,并产生选定的频率相位色散 所述选择性相移和选择性色散从一个反射器网络变化到另一个反射器网络; 以及iii)耦合到反射器网络(RR 1 -RR 9)的充电装置(DC),其用于将它们中的一个放置在相对于源极(S)的选定位置,使得其 传输是以由所述移相器单元施加的频率进行相移和相位分散,以便在所选择的方向上反射。

    Electronically-scanned two-beam antenna
    6.
    发明授权
    Electronically-scanned two-beam antenna 失效
    电子扫描双光束天线

    公开(公告)号:US5652597A

    公开(公告)日:1997-07-29

    申请号:US291713

    申请日:1994-08-16

    申请人: Gerard Caille

    发明人: Gerard Caille

    摘要: An electronically-scanned two-beam antenna designed for being installed on board a moving platform, and in particular a satellite. The antenna of the invention comprises a single, complex reflector whose reflectivity is responsive to the polarization with which it is illuminated, and associated with two arrays of orthogonally-polarized sources that illuminate the complex reflector using an offset configuration. The complex reflector is made up of two reflectors placed one in front of the other in the beam propagation direction. The first reflector is transparent to a first linear polarization and reflective to an orthogonal polarization, while the second reflector is reflective at least for the first polarization. The two resulting beams thus propagate in different directions, both parallel to the trajectory of the platform. Electronic scanning is provided in a plane perpendicular to the orbit plane. The invention is applicable to stereoscopic radars for observing the earth from a satellite, and also to radiometry.

    摘要翻译: 电子扫描的双光束天线设计用于安装在移动平台上,特别是卫星。 本发明的天线包括一个单一的复合反射器,其反射率响应于被照射的偏振,并且与使用偏移配置照亮复反射器的两个正交偏振光源阵列相关联。 复反射器由两个反射器组成,一个在光束传播方向上放置在另一个反射器之前。 第一反射器对于第一线性偏振是透明的并且反射到正交偏振,而第二反射器至少对于第一偏振是反射的。 因此,所产生的两个波束在与平台的轨迹平行的不同方向上传播。 在垂直于轨道平面的平面内提供电子扫描。 本发明适用于用于从卫星观测地球的立体雷达以及辐射测量。

    Variable synthesized polarization active antenna
    7.
    发明授权
    Variable synthesized polarization active antenna 失效
    可变合成极化有源天线

    公开(公告)号:US5659322A

    公开(公告)日:1997-08-19

    申请号:US161273

    申请日:1993-12-03

    申请人: Gerard Caille

    发明人: Gerard Caille

    IPC分类号: H01Q21/24 G01S13/00

    CPC分类号: H01Q21/245

    摘要: The invention concerns a microwave transmit/receive (T/R) circuit for a polarization synthesizer array antenna, especially a radar antenna. According to the invention the required polarization is obtained by applying two signals to an array element on two orthogonal feed paths with a variable phase difference between the two paths, both of which function simultaneously. In a preferred embodiment both transmit channels are provided with two power amplifiers which each amplify a signal from an in-phase power divider or a hybrid coupler, with a one-bit or two-bit controllable phase-shifter adding a phase-shift of 0.degree., 90.degree. or 180.degree. to synthesize orthogonal linear or circular polarizations. In a preferred embodiment the circuit according to the invention is partly or entirely implemented in monolithic (MMIC) technology. The invention also concerns an antenna including a T/R circuit as specified hereinabove.

    摘要翻译: 本发明涉及用于偏振合成器阵列天线,特别是雷达天线的微波发射/接收(T / R)电路。 根据本发明,所需的极化是通过在两个正交馈送路径上的阵列元件上施加两个信号获得的,两个路径之间的可变相位差同时起作用。 在优选实施例中,两个发射信道都具有两个功率放大器,每个功率放大器各自放大来自同相功率分配器或混合耦合器的信号,其中一位或两位可控移相器将相移为0 DEG,90°或180°,以合成正交的线性或圆偏振。 在优选实施例中,根据本发明的电路部分或全部以单片(MMIC)技术实现。 本发明还涉及包括如上所述的T / R电路的天线。

    Transmission relay system
    9.
    发明授权
    Transmission relay system 失效
    传输中继系统

    公开(公告)号:US5999144A

    公开(公告)日:1999-12-07

    申请号:US972262

    申请日:1997-11-18

    摘要: A transmission relay system includes a receive antenna with first radiating elements, a transmit antenna with second radiating elements, and processing devices through which the first radiating elements and the second radiating elements are connected. The processing devices are in the form of processing systems all of which induce the same propagation time-delay. Each system connects a given first radiating element to a corresponding given second radiating element defined firstly by an angular position relative to a second axis of symmetry specific to the transmit antenna offset substantially 180.degree. relative to an angular position of the given first radiating element relative to a first axis of symmetry specific to the receive antenna and parallel to the second axis of symmetry and secondly by an eccentricity in the transmit antenna which is a function of an eccentricity of the given first radiating element in the receive antenna.

    摘要翻译: 传输中继系统包括具有第一辐射元件的接收天线,具有第二辐射元件的发射天线和连接第一辐射元件和第二辐射元件的处理设备。 处理装置是处理系统的形式,所有这些处理系统都引起相同的传播时间延迟。 每个系统将给定的第一辐射元件连接到相对于给定的第二辐射元件,该对应的第二辐射元件相对于相对于给定的第一辐射元件的相对于 特定于接收天线并平行于第二对称轴的第一对称轴,其次是发射天线中的偏心,其是接收天线中给定的第一辐射元件的偏心度的函数。