Holographic mode conversion for electromagnetic radiation
    32.
    发明授权
    Holographic mode conversion for electromagnetic radiation 有权
    电磁辐射的全息模式转换

    公开(公告)号:US09570812B2

    公开(公告)日:2017-02-14

    申请号:US14638961

    申请日:2015-03-04

    Applicant: Elwha LLC

    Abstract: The present disclosure provides systems and methods associated with mode conversion for electromagnetic field modification. A mode converting structure (holographic metamaterial) is formed with a distribution of dielectric constants chosen to convert an input electromagnetic field pattern from a first mode to a second mode to attain a target electromagnetic field pattern (near or far) that is different from the input electromagnetic field pattern. A solution to a holographic equation provides a sufficiently accurate approximation of a distribution of dielectric constants that can be used in conjunction with an electromagnetic radiation device with a known output field pattern to attain a target field pattern. A voxel-based discretization of the distribution of dielectric constants can be used to generate the mode converting structure and/or to facilitate the optimization algorithms. One or more optimization algorithms can be used to improve the efficiency of the mode conversion.

    Abstract translation: 本公开提供了与用于电磁场修改的模式转换相关联的系统和方法。 模式转换结构(全息超材料)形成为具有选择的介电常数分布,以将输入电磁场图案从第一模式转换为第二模式,以获得与输入不同的目标电磁场图案(近或远) 电磁场模式。 全息方程式的解决方案提供了足够精确的介电常数分布的近似值,该介电常数的分布可与具有已知输出场模式的电磁辐射装置结合使用以获得目标场模式。 可以使用基于体素的介电常数分布的离散化来生成模式转换结构和/或促进优化算法。 可以使用一种或多种优化算法来提高模式转换的效率。

    HOLOGRAPHIC MODE CONVERSION FOR TRANSMISSION LINES
    33.
    发明申请
    HOLOGRAPHIC MODE CONVERSION FOR TRANSMISSION LINES 有权
    传输线的全息模式转换

    公开(公告)号:US20160327745A1

    公开(公告)日:2016-11-10

    申请号:US14708043

    申请日:2015-05-08

    Applicant: Elwha LLC

    Abstract: The present disclosure provides systems and methods associated with mode conversion for electromagnetic field modification. A mode converting structure (holographic metamaterial) is formed with a distribution of dielectric constants chosen to convert an electromagnetic radiation pattern from a first mode to a second mode to attain a target electromagnetic radiation pattern that is different from the input electromagnetic radiation pattern. A solution to a holographic equation provides a sufficiently accurate approximation of a distribution of dielectric constants that can be used to form a mode converting device for use with one or more transmission lines, such as waveguides. One or more optimization algorithms can be used to improve the efficiency of the mode conversion.

    Abstract translation: 本公开提供了与用于电磁场修改的模式转换相关联的系统和方法。 模式转换结构(全息超材料)形成为具有选择的介电常数分布,以将电磁辐射图从第一模式转换为第二模式,以获得不同于输入电磁辐射图的目标电磁辐射图。 全息方程式的解决方案提供了可用于形成用于一个或多个传输线(例如波导)的模式转换装置的介电常数分布的足够精确的近似。 可以使用一种或多种优化算法来提高模式转换的效率。

    METHODS AND SYSTEM FOR PERFORMING MAGNETIC INDUCTION TOMOGRAPHY
    35.
    发明申请
    METHODS AND SYSTEM FOR PERFORMING MAGNETIC INDUCTION TOMOGRAPHY 审中-公开
    磁感应造影的方法与系统

    公开(公告)号:US20160305910A1

    公开(公告)日:2016-10-20

    申请号:US14689871

    申请日:2015-04-17

    Applicant: Elwha LLC

    CPC classification number: A61B5/0522 A61B5/0037 G01V3/08

    Abstract: Methods and system for performing magnetic induction tomography imaging of an object are provided. An apparatus includes an array of unit cells and a control circuit coupled to the array of unit cells. The array of unit cells can generate a first magnetic field using an excitation pattern in the direction of a target object and sense a second magnetic field induced in the target object by the first magnetic field. The control circuit can determine a minimum of the first magnetic field. The minimum may correspond to a higher conductivity region of the target object. The control circuit can adjust the excitation pattern based on the higher conductivity region of the target object.

    Abstract translation: 提供了用于对物体进行磁感应层析成像的方法和系统。 一种装置包括单元阵列阵列和耦合到单元阵列的控制电路。 单元电池阵列可以使用激发图案在目标物体的方向上产生第一磁场,并通过第一磁场感测在目标物体中感应的第二磁场。 控制电路可以确定第一磁场的最小值。 最小值可以对应于目标物体的较高导电率区域。 控制电路可以基于目标物体的较高导电性区域来调节激励图案。

    APPARATUS FOR REDUCING SCATTERING AND METHODS OF USING AND MAKING SAME
    37.
    发明申请
    APPARATUS FOR REDUCING SCATTERING AND METHODS OF USING AND MAKING SAME 有权
    用于减少散射的装置及其使用和制造方法

    公开(公告)号:US20160036133A1

    公开(公告)日:2016-02-04

    申请号:US14448711

    申请日:2014-07-31

    Applicant: Elwha LLC

    CPC classification number: H01Q15/14 H01Q1/528

    Abstract: An apparatus for reducing electromagnetic scattering includes a first component having a plurality of curved segments, each including a first reflective material, and together forming an enclosed cavity; and a second component having a plurality of flat or cylindrically-curved segments, each comprising a second reflective material. The second component is positioned external to the cavity.

    Abstract translation: 一种用于减少电磁散射的装置包括具有多个弯曲部分的第一部件,每个弯曲部分包括第一反射材料,并且一起形成封闭空腔; 以及具有多个扁平或圆柱形弯曲的部分的第二部件,每个部件包括第二反射材料。 第二部件位于腔的外部。

    CANCELLATION OF AN ELECTRIC FIELD COMPONENT OF A MAGNETIC FIELD GENERATED BY ARTIFICIALLY STRUCTURED ELECTROMAGNETIC UNIT CELLS
    38.
    发明申请
    CANCELLATION OF AN ELECTRIC FIELD COMPONENT OF A MAGNETIC FIELD GENERATED BY ARTIFICIALLY STRUCTURED ELECTROMAGNETIC UNIT CELLS 有权
    由人工结构电磁单元电池产生的磁场的电场成分的取消

    公开(公告)号:US20160018495A1

    公开(公告)日:2016-01-21

    申请号:US14334450

    申请日:2014-07-17

    Applicant: Elwha LLC

    Abstract: Described embodiments include a system, apparatus, and method. An apparatus includes an assemblage of artificially structured electromagnetic unit cells. The assemblage of artificially structured electromagnetic unit cells includes a first artificially structured electromagnetic unit cell configured to transform incident radiofrequency electromagnetic waves into a radiofrequency magnetic field B perpendicular to the plane of the assemblage. The assemblage of artificially structured electromagnetic unit cells includes a second artificially structured electromagnetic unit cell configured to transform the incident radiofrequency electromagnetic waves into an electric field E counteracting a non-vanishing electric field component generated by the first artificially structured electromagnetic unit cell.

    Abstract translation: 所描述的实施例包括系统,装置和方法。 一种装置包括人造结构的电磁单元的组合。 人造结构的电磁单位电池的组合包括:第一人造结构的电磁单元,被配置为将入射的射频电磁波转换成垂直于组合平面的射频磁场B. 人造结构的电磁单元的组合包括第二人造结构的电磁单元,其被配置为将入射的射频电磁波变换成抵消由第一人工结构的电磁单元产生的非消失电场分量的电场E。

    ARTIFICIALLY STRUCTURED B1 MAGNETIC FIELD GENERATOR FOR MRI AND NMR DEVICES
    39.
    发明申请
    ARTIFICIALLY STRUCTURED B1 MAGNETIC FIELD GENERATOR FOR MRI AND NMR DEVICES 有权
    用于MRI和NMR装置的人造结构B1磁场发生器

    公开(公告)号:US20160018491A1

    公开(公告)日:2016-01-21

    申请号:US14334368

    申请日:2014-07-17

    Applicant: Elwha LLC

    Abstract: Described embodiments include an apparatus, and a method. An apparatus includes an array of at least two artificially structured electromagnetic unit cells. The at least two artificially structured electromagnetic unit cells are configured to generate a pulse of radiofrequency magnetic field B1 orientated transverse to the quasistatic magnetic field B0 parallel to the z-axis of the bore of a MRI or NMR device by transforming an incident pulse of radiofrequency electromagnetic waves. The generated pulse having magnetic field intensity sufficient to excite a detectable magnetic resonance in magnetically active nuclei located within at least a portion of an examination region located within the bore. The apparatus includes a radiofrequency electromagnetic wave conducting structure configured to distribute a received pulse of radiofrequency electromagnetic waves as an incident pulse of radiofrequency electromagnetic waves to the at least two artificially structured electromagnetic unit cells.

    Abstract translation: 所描述的实施例包括装置和方法。 一种装置包括至少两个人造结构的电磁单元的阵列。 所述至少两个人造结构的电磁单元被配置为通过转换射频的入射脉冲来产生横向于与MRI或NMR装置的孔的z轴平行的准静态磁场B0定向的射频磁场B1的脉冲 电磁波。 产生的脉冲具有足以在位于孔内的检查区域的至少一部分内的磁性活性核中激发可检测的磁共振的足够的磁场强度。 该装置包括射频电磁波导电结构,其被配置为将接收到的射频电磁波的脉冲作为射频电磁波的入射脉冲分配到至少两个人造结构的电磁单元。

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