Antenna for radiating and receiving electromagnetic waves
    1.
    发明授权
    Antenna for radiating and receiving electromagnetic waves 失效
    用于辐射和接收电磁波的天线

    公开(公告)号:US06384796B1

    公开(公告)日:2002-05-07

    申请号:US09736296

    申请日:2000-12-15

    IPC分类号: H01Q1300

    CPC分类号: H01Q13/0258 H01P1/161

    摘要: An antenna intended for radiating and receiving electromagnetic waves and including a parabolic reflector and an exciter, which is designed as a sub-reflector and which is attached in the focal point of the reflector at the end of a waveguide, guided through the center of the reflector. On the backside of the reflector a radio box, containing electric and electronic components, is attached to the waveguide, which is connected to a transmitter-receiver. To increase the transmission capacity, a polarization diplexer is provided between the radio box and the waveguide for simultaneous transmission of two orthogonal, linearly polarized waves. The diplexer has first and second inputs with an essentially rectangular clear cross section and an output, which can be attached to the waveguide. In the polarization diplexer there are two waveguide segments, one of which runs linearly between the first input and the output of the polarization diplexer, whereas the other, starting as a 90°0 curve at the second input of the polarization diplexer, empties into the linear waveguide segment in the course of the linear waveguide segment. The linear waveguide segment is rotated by 90° in the input area so that the large axes of the two inputs of the polarization diplexer that lie in the same plane are at right angles to each other.

    摘要翻译: 用于辐射和接收电磁波并包括抛物面反射器和激励器的天线,其被设计为子反射器,并且被附接在波导末端的反射器的焦点中,引导通过 反射器。 在反射器的背面,包含电子和电子部件的无线电盒被连接到连接到发射器 - 接收器的波导管。 为了增加传输容量,在无线电箱和波导之间提供极化双工器,以同时传输两个正交的线性极化波。 双工器具有第一和第二输入,其具有基本上矩形的清晰横截面和可以附接到波导的输出。 在偏振双工器中,有两个波导段,其中一个波导段在偏振双工器的第一输入端和输出端之间呈线性运行,另一个在偏振双工器的第二输入处以90°0曲线开始, 在线性波导段的线性波导段。 线性波导段在输入区域中旋转90°,使得位于同一平面中的偏振双工器的两个输入的大轴彼此成直角。

    Antenna having a parabolic reflector
    2.
    发明授权
    Antenna having a parabolic reflector 失效
    天线具有抛物面反射器

    公开(公告)号:US5708447A

    公开(公告)日:1998-01-13

    申请号:US567782

    申请日:1995-12-05

    IPC分类号: H01Q19/13 H01Q19/12

    CPC分类号: H01Q19/13

    摘要: An antenna includes a parabolic reflector and a supply line attached thereto. The supply line includes two rectangular electromagnetic (waveguides) that are essentially parallel to each other. A tube-shaped exciter is common to the (waveguides) and is located at open ends of the waveguides. A back side of the reflector has a mechanically stable receptacle, which is used to attach the reflector to a support. The receptacle includes a metal ring with an L-shaped cross section in an opening that corresponds to a central opening in the reflector. The ring has a cylindrical area and, at a right angle to the cylindrical area, a base area that extends toward the inside of the ring. In the installed position, the cylindrical area of the ring penetrates and is centered in the opening of the reflector. A holding plate, which firmly surrounds and supports both waveguides, fits precisely into the ring and is attached to the ring in removable form when mounted.

    摘要翻译: 天线包括抛物面反射器和连接到其上的电源线。 电源线包括基本上彼此平行的两个矩形电磁(波导)。 管状激励器对于(波导)是共同的,并且位于波导的开口端。 反射器的后侧具有机械稳定的容器,其用于将反射器附接到支撑件。 插座包括在开口中具有对应于反射器中的中心开口的L形横截面的金属环。 环具有圆柱形区域,并且与圆柱形区域成直角,具有朝向环的内侧延伸的基部区域。 在安装位置,环的圆柱形区域穿过反射器的开口并居中。 牢固地围绕并支撑两个波导的保持板精确地配合到环中并且当安装时以可移动的形式附接到环上。

    Monitoring insulation and fault current in an A/C current network to provide load shutoff whenever differential current exceeds a certain response value
    3.
    发明授权
    Monitoring insulation and fault current in an A/C current network to provide load shutoff whenever differential current exceeds a certain response value 失效
    监控A / C当前网络中的绝缘和故障电流,以便每当差分电流超过某个响应值时提供负载关断

    公开(公告)号:US06392422B1

    公开(公告)日:2002-05-21

    申请号:US09446350

    申请日:2000-04-14

    IPC分类号: G01R2728

    摘要: A method and device for monitoring insulation and fault current in an electrical alternating current network. The differential current formed by vectorial addition is detected between at least two network conductors. Load-cut occurs when the differential current exceeds a specific threshold value. In order to increase safety and to protect human beings, the amount of alternating current contained in the differential current is detected as a first network variable, and the network alternating current between at least both network conductors and between at least one network conductor and an equipotential bonding conductor or a neutral conductor is detected as a second network variable. The product between the amplitude of the amount of alternating current contained in the differential current and the cosine of the phase angle &phgr; between both detected network variables is determined as a measure for the resistive fault current of the network and load cut-out occurs when the determined product exceeds a specific threshold value. The product can be calculated directly or, even better, it can be determined indirectly without knowledge of the individual variables. One particular advantage of this technique is that, by including DC components of the differential current, it enables work with all different types of currents in view of the fact that alternating current networks nowadays mainly consist of a large number of alternating current components which, like resistive AC components, involve fault currents endangering the lives of human beings. Thus, it is possible to ensure simultaneous protection of human beings and installations.

    摘要翻译: 一种用于监测电气交流网络中的绝缘和故障电流的方法和装置。 在至少两个网络导体之间检测由矢量相加形成的差分电流。 当差动电流超过特定的阈值时就会发生负载切断。 为了增加安全性并保护人类,将差分电流中包含的交流电流量作为第一网络变量检测,并且至少在两个网络导体之间和至少一个网络导体与等电位之间的网络交流电 检测到接合导体或中性导体作为第二网络变量。 确定差分电流中包含的交流电流的幅度与两个检测到的网络变量之间的相位角phi的余弦值之间的乘积作为网络的电阻故障电流的量度,并且当 确定的产品超过特定的阈值。 该产品可以直接计算,或者甚至更好地可以间接确定,而不知道各个变量。 这种技术的一个特别的优点是,通过包括差分电流的直流分量,它能够与所有不同类型的电流一起工作,因为现在的交流网络主要由大量的交流分量组成,如 电阻交流元件涉及危及人类生命的故障电流。 因此,可以确保同时保护人类和设施。