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    • 1. 发明授权
    • Broadband quardifilar helix with high peak gain on the horizon
    • 在地平线上具有高峰值增益的宽带四边形螺旋线
    • US06812906B2
    • 2004-11-02
    • US10138855
    • 2002-05-03
    • Mark Lawrence GoldsteinRichard John NinkWilliam Dean Killen
    • Mark Lawrence GoldsteinRichard John NinkWilliam Dean Killen
    • H01Q136
    • H01Q1/362H01Q11/08
    • The invention concerns a quadrifilar helix antenna that has four orthogonal conductive elements helically wound around a common axis. Each of the conductive elements can have between 3 to 7 turns about the common axis at a pitch of between 45 to 65 degrees. Further, each turn has a diameter of about 0.13 wavelengths to 0.27 wavelengths. A feed coupler excites each of the orthogonal conductive elements in phase quadrature at a feed point located at a first end of the antenna adjacent to a ground plane. The resulting antenna can have an axial length of about 2.3 wavelengths to 6.9 wavelengths. Unlike conventional quadrifillar helix antennas, an opposing end of each of the conductive elements distal from the feed point forms an open circuit. The antenna configured as described can have a peak gain on horizon when the common axis is oriented vertically.
    • 本发明涉及一种四边形螺旋天线,其具有围绕公共轴线螺旋缠绕的四个正交导电元件。 每个导电元件可以以45至65度的间距围绕公共轴线3至7匝。 此外,每个匝具有约0.13波长至0.27波长的直径。 馈电耦合器在位于天线的与接地平面相邻的第一端处的馈电点处相位正交地激励每个正交导电元件。 所得到的天线可以具有约2.3波长至6.9波长的轴向长度。 与传统的四叶螺旋天线不同,远离馈电点的每个导电元件的相对端形成开路。 当公共轴垂直定向时,如上所述配置的天线可以在水平线上具有峰值增益。
    • 5. 发明授权
    • Method of separating solid particulate
    • 分离固体颗粒的方法
    • US4170447A
    • 1979-10-09
    • US758443
    • 1977-01-11
    • H. Lawrence GoldsteinHenry Shaw
    • H. Lawrence GoldsteinHenry Shaw
    • B03C1/02B03C1/00B03C1/015B03C3/01B03C3/00B01D53/34
    • B03C1/015B03C1/002
    • An improved process and apparatus for separating solid particulate from a gas stream having the same entrained therein. The separation is accomplished with a magnetic separator comprising a plurality of electro magnets disposed generally around or within the periphery of the gas stream or extending through a cross-section thereof, which magnets are operated such that continuous separation is possible. When the solid particulate is not, normally, subject to magnetic attraction, the same may be rendered subject to such attraction by incorporating a suitable compound therein. This is most conveniently accomplished by adding a precursor of such a compound to the process in which the solid particulate is formed at a point after which the subsequent process steps would result in the conversion of the precursor to a suitable material. The particulate is, of course, separated from the gas stream by magnetic attraction and is then withdrawn from the solid separator by "turning off" the electro magnet or magnets.
    • 一种用于从固体颗粒与其中夹带相同的气流分离固体颗粒的改进方法和装置。 分离是通过一种磁选机来实现的,所述磁选机包括通常围绕或流过气流的周边或延伸穿过其横截面的多个电磁体,该磁体被操作以使连续分离成为可能。 当固体颗粒通常不受磁吸引时,通过在其中加入合适的化合物可以使其具有这种吸引力。 这最方便地通过将这样的化合物的前体添加到其中形成固体颗粒的过程中,在此之后,随后的工艺步骤将导致前体转化为合适的材料。 颗粒当然是通过磁吸引与气流分离,然后通过“关闭”电磁体或磁体从固体分离器中排出。
    • 6. 发明授权
    • Gain-optimized lightweight helical antenna arrangement
    • 增益优化的轻型螺旋天线装置
    • US6115005A
    • 2000-09-05
    • US106433
    • 1998-06-29
    • M. Lawrence GoldsteinEric Andrew GyorkoWilliam D. Killen
    • M. Lawrence GoldsteinEric Andrew GyorkoWilliam D. Killen
    • H01Q1/36H01Q11/08H01Q21/06
    • H01Q1/36H01Q11/08H01Q21/061H01Q21/067
    • A gain-optimized, compact helical antenna array comprises an array of tapered pitch angle helical antenna elements. By tapered pitch angle is meant that the pitch angle increases from the base end of the antenna element to the distal end, in a manner that optimizes the gain of each helical element relative to helix length for a given physical size of the winding. Each helical winding is coupled to a signal distribution network, through which the antenna's radiation pattern is controllably defined. The antenna elements have a spatially aperiodic distribution, that reduces grating lobes, by minimizing the number of antenna elements which share the same azimuth. A radial line orthogonal to the boresight axis will intercept a minimum number of helical antenna elements of the array. To minimize mutual coupling, the mutual spacing between any two antenna elements of the array is at least a prescribed minimum separation that is proportional to a product of the square root of the gain of the respective antenna element and the wavelength of the operating frequency of the array.
    • 增益优化的紧凑型螺旋天线阵列包括锥形螺距角螺旋天线元件阵列。 锥形俯仰角意味着俯仰角从天线元件的基端到远端增加,以使绕组的给定物理尺寸相对于螺旋长度的每个螺旋形元件的增益最优化。 每个螺旋绕组耦合到信号分配网络,通过该信号分配网络可控地限定天线的辐射图。 天线元件具有空间非周期分布,通过最小化具有相同方位角的天线元件的数量来减少光栅瓣。 与视轴相垂直的径向线将截取阵列的最小数量的螺旋天线元件。 为了最小化相互耦合,阵列的任何两个天线元件之间的相互间隔至少是规定的最小间隔,其与相应天线元件的增益的平方根与乘法频率的波长成比例 数组。