All digital phased array using space/time cascaded processing
    1.
    发明授权
    All digital phased array using space/time cascaded processing 失效
    所有数字相控阵使用空间/时间级联处理

    公开(公告)号:US06738018B2

    公开(公告)日:2004-05-18

    申请号:US10136673

    申请日:2002-05-01

    IPC分类号: H01Q326

    摘要: The invention concerns a method and apparatus for cascaded processing of signals in a phased array antenna system in which a plurality of antenna elements are configured as a plurality of sub-arrays. A weighting factor is applied to each of the antenna elements to form a plurality of sub-array beams, each pointed in a selected direction. For each sub-array, an output from each the antenna elements in the sub-array can be combined to produce a sub-array output signal. The sub-array output signals are selectively weighted and combined in a fully adaptive process. Subsequently, the system can estimate an angle-of-arrival direction for a signal-of-interest (“SOI”) and at least one signal-not-of-interest (“SNOI”). Based on this estimating step, the system calculates a new set of weighting factors for controlling one or more of the sub-array beams to improve the signal-to-noise plus interference ratio obtained for the SOI in the array output signal.

    摘要翻译: 本发明涉及一种在相控阵天线系统中级联处理信号的方法和装置,其中多个天线元件被配置为多个子阵列。 对每个天线元件施加加权因子以形成多个子阵列波束,每个子阵列波束指向所选择的方向。 对于每个子阵列,可以组合子阵列中每个天线元件的输出以产生子阵列输出信号。 子阵列输出信号被选择性地加权并在完全适应的过程中组合。 随后,系统可以估计感兴趣信号(“SOI”)和至少一个不感兴趣的信号(“SNOI”)的到达方向。 基于该估计步骤,系统计算用于控制一个或多个子阵列波束的一组新的加权因子,以改善在阵列输出信号中为SOI获得的信噪比加干扰比。

    Directive disk feed system
    2.
    发明授权
    Directive disk feed system 失效
    指令盘送料系统

    公开(公告)号:US3936835A

    公开(公告)日:1976-02-03

    申请号:US454910

    申请日:1974-03-26

    CPC分类号: H01Q19/17 H01Q25/007

    摘要: A multiple beam antenna having either a main reflector or a lens is illuminated by a feed system comprising a number of primary radiators such as dipole elements. Primary radiation from each dipole element reflects from the principal reflector to produce a different respective one of the multiple secondary beams in the remote field. A disk-shaped electrically conductive director is located in the primary radiation path near each primary radiator. Each director operates both to shape the primary pattern of its respective primary radiator directly, and also to excite parasitic radiation in neighboring primary radiators so as to produce a primary radiation pattern whose shape approximates a sector of a circle, thereby producing high illumination efficiency at the main reflector. The desired sector shape of primary pattern is achieved despite relatively close lateral spacing between adjacent primary radiators of the feed system. The close spacing enables achievement of high beam crossover level between adjacent secondary beams in the remote field.

    摘要翻译: 具有主反射器或透镜的多光束天线由包括多个主要辐射器(例如偶极子元件)的馈送系统照明。 来自每个偶极子元件的主要辐射从主反射器反射,以在远场中产生多个次级光束中不同的相应一个。 盘形导电导向器位于每个主辐射器附近的主辐射路径中。 每个导向器既可以直接对其各个主辐射体的主要图案进行成形,也可以激发相邻一次辐射器中的寄生辐射,从而产生形状接近圆形扇形的主辐射图,从而在 主反射器 尽管馈送系统的相邻主辐射器之间的相对较小的横向间隔是实现初级图案的期望扇形形状。 靠近的间距使得能够实现远程场中相邻次级光束之间的远光交叉电平。

    COHERENT COMBINING FOR WIDELY-SEPARATED APERTURES
    4.
    发明申请
    COHERENT COMBINING FOR WIDELY-SEPARATED APERTURES 审中-公开
    用于宽松分离孔的联合组合

    公开(公告)号:US20100052986A1

    公开(公告)日:2010-03-04

    申请号:US12203592

    申请日:2008-09-03

    IPC分类号: H01Q3/00

    CPC分类号: H01Q21/28 H01Q21/29

    摘要: Method for coherently combining signals received from two widely separated antenna apertures (204, 206). The method includes positioning a first antenna aperture (204) at a first location spaced apart a distance with respect to a second location of a second antenna aperture (206). A distance between the first antenna aperture and the second antenna aperture is selected to be at least a plurality of wavelengths at a predetermined operating frequency of the first antenna aperture and the second antenna aperture. An antenna beam or pattern (208, 210) from each antenna aperture (204, 206) is directed toward a target (212) positioned at a location remote from the first antenna aperture and the second antenna aperture. Adaptive digital processing (416) is then used to coherently combine the signals independently received by each aperture from the common source.

    摘要翻译: 用于相干地组合从两个广泛分离的天线孔(204,206)接收的信号的方法。 该方法包括将第一天线孔径(204)定位在相对于第二天线孔径(206)的第二位置间隔距离的第一位置处。 第一天线孔径和第二天线孔径之间的距离被选择为在第一天线孔径和第二天线孔径的预定工作频率下的至少多个波长。 来自每个天线孔径(204,206)的天线波束或图案(208,210)指向位于远离第一天线孔径和第二天线孔径的位置的目标(212)。 自适应数字处理(416)然后用于相干地组合来自公共源的每个孔独立接收的信号。

    Phased array antenna using aperiodic lattice formed of aperiodic subarray lattices
    5.
    发明授权
    Phased array antenna using aperiodic lattice formed of aperiodic subarray lattices 有权
    使用非周期子阵列晶格形成的非周期晶格的相控阵天线

    公开(公告)号:US06456244B1

    公开(公告)日:2002-09-24

    申请号:US09911350

    申请日:2001-07-23

    IPC分类号: H01Q136

    摘要: A phased array antenna (10) includes a plurality of subarray lattices (16) arranged in an aperiodic array lattice (14). Each subarray lattice (16) includes a plurality of antenna elements (20) arranged in an aperiodic configuration such as formed on a multilayer circuit board (24). Electronic circuitry (26) are supported by the circuit board and mounted between the antenna elements (20) and operatively connected thereto for amplifying, phase shifting and beam forming any transmitted or received signals.

    摘要翻译: 相控阵天线(10)包括布置在非周期阵列格(14)中的多个子阵列(16)。 每个子阵列(16)包括以非周期性构造布置的多个天线元件(20),其形成在多层电路板(24)上。 电子电路(26)由电路板支撑并且安装在天线元件(20)之间并可操作地连接到天线元件(20)上,用于放大,相移和波束形成任何发送或接收的信号。

    Polarization insensitive lens formed of spiral radiators
    6.
    发明授权
    Polarization insensitive lens formed of spiral radiators 失效
    由螺旋辐射器形成的极化不敏感透镜

    公开(公告)号:US3956752A

    公开(公告)日:1976-05-11

    申请号:US557585

    申请日:1975-03-12

    CPC分类号: H01Q9/27 H01Q15/24 H01Q21/245

    摘要: A polarization insensitive lens is disclosed for receiving and reradiating electromagnetic energy, which may be either left-hand circular polarized or right-hand circular polarized or of any linear polarization or, in fact, of any polarization state. Each lens is comprised of a pair of spaced apart multiarm/antenna elements of opposite geometric polarization. The elements are located on opposite sides of a ground plane and spaced therefrom by 1/4 wave length. The arms of each antenna element are constructed such that both right-hand circular polarized and left circular polarized signals received by one element experience the same phase delay while being transmitted and then reradiated from the other antenna element.

    摘要翻译: 公开了一种用于接收和重新辐射电磁能的偏振不敏感透镜,其可以是左旋圆偏振光或右旋圆偏振光或者任何线偏振光,或实际上是任何极化状态。 每个透镜由相对几何极化的一对间隔开的多臂/天线元件组成。 这些元件位于接地平面的相对侧并与之隔开1/4波长。 每个天线元件的臂被构造成使得由一个元件接收的右旋圆极化和左圆极化信号在被发射时经历相同的相位延迟,然后从另一个天线元件再次辐射。

    TUNABLE LASER DEVICE AND A METHOD FOR PRODUCING LIGHT OF RESPECTIVE SELECTABLE WAVELENGTHS
    8.
    发明申请
    TUNABLE LASER DEVICE AND A METHOD FOR PRODUCING LIGHT OF RESPECTIVE SELECTABLE WAVELENGTHS 有权
    柔性激光器件及其生产可选择波长光的方法

    公开(公告)号:US20100046562A1

    公开(公告)日:2010-02-25

    申请号:US12442244

    申请日:2007-09-20

    IPC分类号: H01S3/10

    摘要: A tunable laser device (1) comprises integrally formed first and second ridge waveguides (5, 6). A longitudinally extending ridge (12) defines first and second light guiding regions (19, 20) of the first and second waveguides (5, 6) which communicate with each other. A plurality of first slots (27) extending laterally in the ridge (12) adjacent the first waveguide (5), and a plurality of second slots (28) extending laterally in the ridge (12) adjacent the second waveguide (6) produce first and second mirror loss spectra of the respective first and second waveguides (5, 6) with minimum peak values at respective first and second wavelength values. The first slots are equi-spaced apart to produce the first mirror loss spectrum, and the second slots (28) are also equi-spaced apart, but the spacing between the second slots (28) is different to the spacing between the first slots (27) so that the minimum peak values of the second mirror loss spectrum occur at different wavelength values to the wavelength values at which the minimum peak values of the first mirror loss spectrum occur, with the exception of one minimum peak value of each of the first and second mirror loss spectra, which coincide at a common wavelength value. The tunable laser device (1) produces light of that common wavelength value. In order to vary the wavelength value at which the minimum peak value of each of the first and second mirror loss spectra occur, currents with which the first and second waveguides (5, 6) are pumped are independently varied for varying the wavelengths at which the minimum peak values of the respective first and second mirror loss spectra occur, thereby providing Vernier tuning of the tunable laser device for producing light of selectable wavelengths.

    摘要翻译: 可调谐激光装置(1)包括一体形成的第一和第二脊状波导(5,6)。 纵向延伸的脊(12)限定彼此连通的第一和第二波导(5,6)的第一和第二导光区域(19,20)。 在邻近第一波导(5)的脊(12)中横向延伸的多个第一槽(27)以及邻近第二波导(6)在脊(12)中横向延伸的多个第二槽(28)产生第一 以及在相应的第一和第二波长值处具有最小峰值的相应的第一和第二波导(5,6)的第二镜损耗谱。 第一槽间隔开以产生第一反射镜损耗光谱,而第二槽(28)也是等间隔开的,但是第二槽(28)之间的间距与第一槽之间的间距不同 27),使得第二镜损耗光谱的最小峰值出现在与第一镜损耗光谱的最小峰值出现的波长值不同的波长值上,除了第一镜损耗光谱中的每一个的最小峰值 和第二镜损耗光谱,其在共同的波长值上重合。 可调激光器件(1)产生该共同波长值的光。 为了改变发生第一和第二镜损耗光谱中的每一个的最小峰值的波长值,泵浦第一和第二波导(5,6)的电流被独立地变化,以改变波长 发生相应的第一和第二反射镜损耗光谱的最小峰值,由此提供可调激光器件的游标调谐,用于产生可选波长的光。

    Communications system including phased array antenna providing nulling and related methods
    9.
    发明授权
    Communications system including phased array antenna providing nulling and related methods 失效
    通信系统包括相控阵天线提供归零和相关方法

    公开(公告)号:US07068219B2

    公开(公告)日:2006-06-27

    申请号:US10864922

    申请日:2004-06-10

    IPC分类号: H01Q3/24

    CPC分类号: H01Q3/2611

    摘要: A phased array antenna may include a plurality of antenna elements, at least one respective phase shifter connected to each antenna element, and at least one respective gain element connected to each antenna element. The phased array antenna may further include at least one controller for determining and controlling both phases and gains of the phase shifters and gain elements, respectively, to provide beamsteering in a first direction for a signal of interest. The controller may also iteratively determine and control phases of the phase shifters to provide a null in a second direction for a signal not of interest, and without determining or controlling gains of the gain elements.

    摘要翻译: 相控阵天线可以包括多个天线元件,连接到每个天线元件的至少一个相应的移相器以及连接到每个天线元件的至少一个相应的增益元件。 相控阵天线还可以包括至少一个控制器,用于分别确定和控制移相器和增益元件的相位和增益两者,以在感兴趣的信号的第一方向上提供波束导向。 控制器还可以迭代地确定和控制移相器的相位,以在不感兴趣的信号的第二方向上提供零,并且不确定或控制增益元件的增益。

    Direct fed spiral antenna
    10.
    发明授权
    Direct fed spiral antenna 失效
    直馈螺旋天线

    公开(公告)号:US3949407A

    公开(公告)日:1976-04-06

    申请号:US555796

    申请日:1975-03-06

    CPC分类号: H01Q23/00 H01Q9/27

    摘要: A direct fed spiral antenna element array is disclosed for radiating electromagnetic energy. Each antenna element is a multi-arm spiral element having inner and outer ends. Phase shifting is obtained with internal phase control wherein switching means serve to interconnect selected ones of the inner arm ends. Each such antenna element is directly fed by a feed network which feeds currents directly to the outer ends of the spiral arms.

    摘要翻译: 公开了用于辐射电磁能的直接馈电螺旋天线元件阵列。 每个天线元件是具有内端和外端的多臂螺旋元件。 通过内部相位控制获得相移,其中切换装置用于互连内臂端部中的所选择的一个。 每个这样的天线元件由馈送网络直接馈送,馈电网络将电流直接馈送到螺旋臂的外端。