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    • 2. 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。