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    • 2. 发明授权
    • Ferroelectric-scanned phased array antenna
    • 铁电扫描相控阵天线
    • US5309166A
    • 1994-05-03
    • US806528
    • 1991-12-13
    • Donald C. CollierKevin J. KrugBrittan Kustom
    • Donald C. CollierKevin J. KrugBrittan Kustom
    • H01P1/18H01Q3/36H01Q3/30
    • H01Q3/36H01P1/181
    • A phased array antenna includes an array of phase shifters, each shifter being operable for shifting the phase of RF energy passing therethrough. Each shifter includes a quantity of ferroelectric material disposed throughout a region. RF energy propagating from a source passes through the material. A thin conductive electrode is disposed in the center of the material, the electrode having a bias voltage imposed thereon. Such voltage creates an electric field across the material, which for a uniaxial ferroelectric orients the optic axis of the material in a direction which is both normal to the direction of propagation of the RF energy and parallel to the polarization direction of the RF energy. The electric field changes the wave propagation constant (i.e., for a uniaxial ferroelectric, the extraordinary wave refractive index, n.sub.e), producing a varying path length of the RF energy in the material, resulting in a controllable alteration of the phase of the RF energy. The varying phase shift produced by each phase shifter controls the antenna's radiating direction.
    • 相控阵天线包括移相器阵列,每个移位器可操作用于移动通过其中的RF能量的相位。 每个移位器包括设置在整个区域中的一定数量的铁电材料。 从源传播的RF能量通过材料。 薄的导电电极设置在材料的中心,电极具有施加的偏置电压。 这种电压在整个材料之间产生电场,这对于单轴铁电将材料的光轴沿着与RF能量的传播方向垂直的平行于RF能量的偏振方向的方向定向。 电场改变波传播常数(即,对于单轴铁电,异常波折射率,ne),产生材料中RF能量的变化的路径长度,导致RF能量的相位的可控改变 。 由每个移相器产生的变化的相移控制天线的辐射方向。
    • 3. 发明授权
    • Measuring the ability of electroptic materials to phase shaft RF energy
    • 测量电光材料对相轴RF能量的能力
    • US5206613A
    • 1993-04-27
    • US794267
    • 1991-11-19
    • Donald C. CollierKevin J. KrugBrittan Kustom
    • Donald C. CollierKevin J. KrugBrittan Kustom
    • H01P1/18H01Q3/36
    • H01P1/181H01Q3/36
    • A phase shifter for use in a phased array antenna includes a waveguide flange of metallic material has a narrow slot formed therein, the slot having ferroelectric material disposed uniformly therein. The slot is of reduced height relative to normal waveguide dimension, such height reduction minimizing the voltage applied across the material RF energy radiating from a source is directed to pass through the ferroelectric material. A single, thin conductive plate is disposed in the center of the slot, the plate having an electrical DC voltage imposed thereon. Such voltage creates an electric field across the material, which for a uniaxial ferroelectric orients the optic axis in a direction which is both normal to the direction of propagation of the radiation and parallel to the polarization direction of the radiation. The electric field changes the wave propagation constant (i.e., for a uniaxial ferroelectric, the extraordinary wave refractive index, n.sub.e), producing a varying path length of the radiation in the material, resulting in a controllable alteration of the radiation phase. The varying phase shift is either used to control an antenna's radiating direction, or is detected by a measuring device to test the material itself.
    • 用于相控阵天线的移相器包括金属材料的波导法兰,其中形成有狭窄的槽,所述狭缝具有均匀地设置的铁电材料。 槽相对于普通的波导尺寸具有降低的高度,使得最小化跨材料施加的电压的高度减小被引导通过铁电材料。 单个的薄导电板设置在槽的中心,该板具有施加在其上的直流电压。 这种电压在整个材料之间产生电场,这对于单轴铁电将光轴定向在与辐射的传播方向垂直的方向上并且平行于辐射的偏振方向。 电场改变波传播常数(即,对于单轴铁电,非常波折射率,ne),产生材料中辐射的变化的路径长度,导致辐射相的可控改变。 变化的相移用于控制天线的辐射方向,或者由测量装置检测,以测试材料本身。
    • 4. 发明授权
    • Conformal switched beam array antenna
    • 保形开关束阵列天线
    • US5457465A
    • 1995-10-10
    • US91693
    • 1987-09-01
    • Donald C. CollierTimothy R. Holzheimer
    • Donald C. CollierTimothy R. Holzheimer
    • H01Q3/24H01Q21/06H01Q3/02
    • H01Q3/24H01Q21/061
    • A conformal switched beam array antenna (10) is provided which includes a plurality of antenna elements (14) that are mounted onto a curved (16) or a planar surface (28) and that are arranged into a plurality of arrays (22). The antenna elements (14) in each array (22) are arranged in a hexagonal array with one antenna element (14) in the center of each hexagonal array space. A plurality of multiple-throw switches (34), a RF power divider or power combiner (42), and a digital programmer (46) cooperate to select antenna elements (14) in the direction of a given target, and also cooperate to reduce the required number of phase shifters (40) and amplifiers (38 or 58) to a fraction of the total number of antenna elements (14).
    • 提供保形开关束阵列天线(10),其包括安装在弯曲(16)或平坦表面(28)上并且被布置成多个阵列(22)的多个天线元件(14)。 每个阵列(22)中的天线元件(14)以六边形阵列布置,每个六边形阵列空间的中心具有一个天线元件(14)。 多个多掷开关(34),RF功率分配器或功率组合器(42)和数字编程器(46)协作以在给定目标的方向上选择天线元件(14),并且还协作以减少 所需数量的移相器(40)和放大器(38或58)到天线元件总数(14)的一部分。
    • 5. 发明授权
    • Microwave antenna with sinuous waveguide feed
    • 微波天线带有弯曲波导馈线
    • US4348680A
    • 1982-09-07
    • US228558
    • 1981-01-26
    • Donald C. Collier
    • Donald C. Collier
    • H01Q3/22H01Q13/00H01Q21/06
    • H01Q21/064H01Q13/00H01Q3/22
    • An electronically scannable microwave antenna having a minimum physical size suitable for mounting in the leading edge of an aircraft wing or the like. A multiplicity of waveguide radiators form a horizontal array having a common horn for limiting the vertical beamwidth. The radiators are fed by a common continuous sinuous waveguide having a plurality of coupling apertures for feeding the radiators in phase. The sinuous waveguide includes coupling sections above and below the radiators to minimize the horizontal size of the antenna. The coupling apertures are formed to provide a linear Taylor distribution of energy to the radiators to produce a narrow horizontal beamwidth having very small side lobes. The antenna beam is scannable in azimuth by varying the frequency of the input signal or by periodically varying the phase of a constant frequency input signal at each radiator.
    • 一种具有最小物理尺寸的电子可扫描微波天线,其适用于安装在飞机机翼等的前缘。 多个波导辐射器形成具有用于限制垂直波束宽度的公共喇叭的水平阵列。 散热器由具有多个耦合孔的共同的连续弯曲波导馈送,用于同时馈送散热器。 蜿蜒波导包括在辐射器上方和下方的耦合部分,以最小化天线的水平尺寸。 耦合孔被形成为向辐射器提供能量的线性泰勒分布,以产生具有非常小的旁瓣的窄水平波束宽度。 通过改变输入信号的频率或通过周期性地改变每个散热器处的恒定频率输入信号的相位,天线波束可以在方位扫描。
    • 6. 发明授权
    • Flatplate array antenna with polarizer lens
    • 平板天线带偏光镜
    • US5815121A
    • 1998-09-29
    • US827768
    • 1997-04-11
    • Donald C. Collier
    • Donald C. Collier
    • H01Q15/24H01Q21/00
    • H01Q15/244H01Q21/00
    • An improved flatplate array antenna has a polarizer lens positioned adjacent the array. The polarizer lens is made of at least one dielectric sheet having an upper half and a lower half. Each half contains a set of parallel meanderlines positioned so that vertically or horizontally polarized RF energy emitted from the array passes through the lens and undergoes a phase advance or a phase retard, so that the RF energy passing through the upper half becomes circularly polarized in one direction and the RF energy passing through the lower half becomes circularly polarized in an opposite direction.
    • 改进的平板阵列天线具有邻近阵列定位的偏振镜。 偏振镜由至少一个具有上半部和下半部的电介质片制成。 每一半包含一组平行弯曲线,其定位使得从阵列发射的垂直或水平极化的RF能量通过透镜并经历相位超前或相位延迟,使得通过上半部分的RF能量在一个方向上变成圆极化 方向,并且穿过下半部分的RF能量在相反方向上变成圆极化。