公开(公告)号：US4984187A

公开(公告)日：1991-01-08

申请号：US813180

申请日：1985-12-24

申请人： Mark Graybill ,  Allan Goetz

发明人： Mark Graybill ,  Allan Goetz

IPC分类号： H03H17/04

CPC分类号： H03H17/04

摘要： A recursive digital filter and method for filtering an n-bit digital input signal. The filter includes a summing circuit which receives an input signal. A second summing circuit is also provided which is coupled to the first summing circuit. Further provided is a feedback circuit which is operable to allow the first and second summing circuits to generate a filtered output signal without using a multiplier.

摘要翻译： 一种用于滤波n位数字输入信号的递归数字滤波器和方法。 滤波器包括接收输入信号的求和电路。 还提供了耦合到第一求和电路的第二求和电路。 还提供了一种反馈电路，其可操作以允许第一和第二求和电路在不使用乘法器的情况下产生经滤波的输出信号。

公开(公告)号：US20080106482A1

公开(公告)日：2008-05-08

申请号：US11594320

申请日：2006-11-08

申请人： Alan Cherrette ,  Carl Wise ,  Arun Bhattacharyya ,  Michael Wrobleski ,  Allan Goetz

发明人： Alan Cherrette ,  Carl Wise ,  Arun Bhattacharyya ,  Michael Wrobleski ,  Allan Goetz

IPC分类号： H01Q21/00 ,  H01Q1/42

CPC分类号： H01Q21/065 ,  H01Q1/02 ,  H01Q1/246 ,  H01Q1/28 ,  H01Q1/40

摘要： A low-profile, electronically scanned antenna that can scan a hemisphere is comprised of three, phased array radiators. Each radiator face has an azimuth and elevation scan angle equal to 120 degrees. The three radiator faces are arranged in a truncated 3 sided pyramid such that they prove continuous hemispherical coverage. The three radiators are mounted to cooled panels of a truncated pyramid-shaped frame such that the radiators enable a full hemisphere to be scanned by radar.

摘要翻译： 可扫描半球的低调电子扫描天线由三个相控阵辐射器组成。 每个散热器面具有等于120度的方位和仰角扫描角度。 三个散热器表面被布置在截顶的三面金字塔中，使得它们证明连续的半球形覆盖。 三个散热器安装在截锥形框架的冷却面板上，使得散热器能够通过雷达扫描完整的半球。