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    • 2. 发明申请
    • Phase-shifting cell for an antenna reflector
    • 用于天线反射器的相移单元
    • US20050219125A1
    • 2005-10-06
    • US10517706
    • 2003-06-13
    • Michel CharrierThierry DeanAfshin ZiaeiHerve LegayBeatrice PinteRaphael GillardEtienne GirardRonan Moulinet
    • Michel CharrierThierry DeanAfshin ZiaeiHerve LegayBeatrice PinteRaphael GillardEtienne GirardRonan Moulinet
    • H01Q3/46H01Q9/06H01Q21/06H01Q1/38
    • H01Q3/46H01Q9/065H01Q21/062
    • The invention relates to phase-shifting cells constituting the passive reflectarrays of antennas with a reconfigurable transmission direction, transmitting in the microwave range. More particularly, the invention describes, within the context of phase-shifting cells of the type having dipole strands angularly distributed in a star configuration, a novel type of switch consisting of a microelectromechanical device essentially comprising a suspended micromembrane which, under the action of an electrostatic force caused by a control voltage, deforms sufficiently to ensure electrical connection between the strands, making it possible to form a dipole in the desired orientation. In one particular embodiment, the micromembrane can be likened to one of the plates of a capacitor and its deformation corresponds to a substantial increase in the capacitance of this capacitor, thus providing the electrical connection. This switch technology has the advantages of greater fabrication simplicity and of enhanced performance compared with the known technologies. The invention provides the main geometrical and technological characteristics for obtaining optimized performance.
    • 本发明涉及在微波范围内传输构成天线的无源反射阵列的移相电池,具有可重新配置的传输方向。 更具体地说,本发明描述了在具有以星形结构成角度分布的偶极子线圈的类型的相移单元的上下文中,新型开关由基本上包含悬浮微膜的微机电装置组成,该微机电装置在 由控制电压引起的静电力足够变形以确保线之间的电连接,使得可以以期望的方向形成偶极子。 在一个具体实施例中,微膜可以被比作电容器的一个板,并且其变形对应于该电容器的电容的显着增加,从而提供电连接。 与已知技术相比,该开关技术具有更大的制造简单性和更高性能的优点。 本发明提供了获得优化性能的主要几何和技术特性。
    • 4. 发明授权
    • Dual polarization planar radiating element and array antenna comprising such a radiating element
    • 双极化平面辐射元件和包括这种辐射元件的阵列天线
    • US08248306B2
    • 2012-08-21
    • US12578831
    • 2009-10-14
    • Herve LegayDaniele BrescianiRenaud Chiniard
    • Herve LegayDaniele BrescianiRenaud Chiniard
    • H01Q1/38
    • H01Q9/0478H01Q9/0464
    • A dual-polarization planar radiating element having an external metal grid, at least one metal patch concentric with the external metal grid and a cavity separating the metal grid and the metal patch, the grid and the patch having a polygonal shape delimited by at least four pairwise opposite sides, and two orthogonal directions of polarization associated with two orthogonal electric fields Ev and Eh, at least one of the directions of polarization being parallel to two sides of the polygon. Each side of the metal patch parallel to a direction of polarization is linked electrically to a zone of the external grid where one of the electric fields Ev or Eh is a minimum. The invention exhibits the advantage of reducing the phenomenon of electrostatic discharges in the planar radiating elements without significantly modifying the response of the radiating element subjected to an orthogonally polarized wave.
    • 具有外部金属网格的双极化平面辐射元件,与外部金属网格同心的至少一个金属贴片和分隔金属栅格和金属贴片的空腔,栅格和贴片具有由至少四个 成对的相对侧和与两个正交电场Ev和Eh相关联的两个正交正交方向,极化方向中的至少一个平行于多边形的两侧。 平行于偏振方向的金属贴片的每一侧电连接到电场Ev或Eh中的一个最小的外部格栅的区域。 本发明具有减少平面辐射元件中的静电放电现象的优点,而不会明显地改变经受正交极化波的辐射元件的响应。
    • 6. 发明授权
    • Antenna with one-way circular polarization
    • 单向圆极化天线
    • US6100854A
    • 2000-08-08
    • US121856
    • 1998-07-24
    • Thierry DusseuxEmmanuelle HusseHerve LegayMichel Pauchet
    • Thierry DusseuxEmmanuelle HusseHerve LegayMichel Pauchet
    • H01P1/17H01Q13/00
    • H01P1/173
    • An antenna having one-way circular polarization is of the type comprising a radiating element associated with a frequency filter. It comprises a polarization-selective device disposed at the transition between the frequency filter and polarizer means adapted to cause the wave to be circularly polarized. This multimode selective device is adapted 1) to enable the initial go mode to propagate, 2) in transmission, to pass one of the return modes induced by the polarizer means, and 3) to reflect the other return mode. At the polarizer, the wave made up of the initial mode and of the reflected return modes reinforces the circular polarization of the initial mode. Such an antenna can be made as a single piece of size and weight that are smaller than those of known antennas having one-way circular polarization.
    • 具有单向圆极化的天线是包括与频率滤波器相关联的辐射元件的类型。 它包括设置在频率滤波器和偏振器装置之间的过渡处的偏振选择装置,其适于使波浪被圆偏振。 该多模选择装置适于使初始去模式能够传播,2)在传输中通过由偏振器装置感应的一个返回模式,以及3)反映另一返回模式。 在偏振器处,由初始模式和反射返回模式组成的波加强了初始模式的圆极化。 这样的天线可以制成小于具有单向圆极化的已知天线的尺寸和重量的单片。
    • 7. 发明申请
    • Low-loss reconfigurable reflector array antenna
    • 低损耗可重构反射器阵列天线
    • US20050122273A1
    • 2005-06-09
    • US10946033
    • 2004-09-22
    • Herve LegayBeatrice Salome
    • Herve LegayBeatrice Salome
    • H01Q3/46H01Q3/22H01Q19/06
    • H01Q3/46
    • A reflector array antenna is divided into independent subarrays each comprising at least two radiating elements adapted firstly to collect signals delivered by a source and having at least one chosen first polarization and secondly to send phase-shifted signals having at least one chosen second polarization orthogonal to the first polarization. Each subarray sums the collected signals as a function of a chosen first phase law so that they correspond to a chosen source pointing direction, applies a chosen phase shift to the summed signals, and distributes the phase-shifted signals between the radiating elements as a function of a chosen second phase law so that the radiating elements of each subarray radiate them in a pointing direction of a chosen area. The combining and distribution are effected separately and the subarrays are therefore of a nonreciprocal type.
    • 反射器阵列天线被分成独立的子阵列,每个独立的子阵列包括至少两个辐射元件,所述辐射元件首先适于收集由源传送的信号并且具有至少一个选择的第一极化,其次是发送具有至少一个所选择的第二偏振正交的相移信号 第一极化。 每个子阵列将所收集的信号作为所选择的第一相位定律的函数进行求和,使得它们对应于所选择的源指向方向,将所选择的相移应用于求和的信号,并将辐射元件之间的相移信号分布为函数 所选择的第二相定律,使得每个子阵列的辐射元件沿所选区域的指向方向辐射它们。 组合和分配是分开实现的,因此子阵列是不可逆的。