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    Electromagnetic angle filter including two staggered, identical, periodically perforated conductive plates
    51.
    发明授权
    Electromagnetic angle filter including two staggered, identical, periodically perforated conductive plates 失效
    电磁角度滤波器包括两个交错，相同，周期性穿孔的导电板

    公开(公告)号：US4314255A

    公开(公告)日：1982-02-02

    申请号：US138324

    申请日：1980-04-08

    Applicant: Thomas W. Kornbau

    Inventor： Thomas W. Kornbau

    IPC: H01Q15/00 ,  H01Q15/10

    CPC classification number: H01Q15/10 ,  H01Q15/0053

    Abstract: An angle filter for electromagnetic radiation having a predetermined wavelength .lambda.. The angle filter includes a planar-parallel pair of perforated conductive plates having arrays of periodic perforations. The perforations are spaced apart for creating grating lobes between the plates at the predetermined wavelength .lambda. at incidence angles greater than .theta..sub.G. All of the perforations in both plates are identical. The spacing between the perforations in both plates is identical. The plates are staggered so that the perforations in at least one dimension of one plate are aligned between the perforations in the corresponding dimension of the other plate for minimizing coupling between the plates at incidence angles somewhat greater than .theta..sub.G in a plane corresponding to the one dimension. The center-to-center spacing between perforations in the one dimension is equal to .lambda. divided by 2 sin .theta., wherein .theta. is an incidence angle greater than .theta..sub.G. In an embodiment in which the plates contain the periodic perforations in two normal dimension, which define E and H-planes, the plates are staggered so that the perforations in both dimensions of one plate are aligned between the perforations in the corresponding dimensions of the other plate for minimizing coupling between the plates over a range of incidence angles in both the E and H-planes.

    Abstract translation: 一种具有预定波长λ的电磁辐射角度滤波器。 角度过滤器包括具有周期性穿孔阵列的平面 - 平行的穿孔导电板对。 穿孔间隔开，以在大于θ的入射角处在预定波长λ处的板之间产生格栅。所有这两个板中的所有穿孔是相同的。 两个板中穿孔之间的间距相同。 板是交错的，使得在一个板的至少一个尺寸中的穿孔在另一个板的相应尺寸中在穿孔之间对齐，以使得在对应于一个板的平面中的角度稍大于θG的入射角最小化板之间的耦合 尺寸。 一维中穿孔之间的中心到中心间距等于λ除以2sinθ，其中θ是大于θG的入射角。在其中板包含两个正常尺寸的周期性穿孔的实施例中， 其定义了E和H平面，板是交错的，使得一个板的两个尺寸的穿孔在另一个板的相应尺寸中在穿孔之间对齐，以便在两个板的入射角范围内最小化板之间的耦合 E和H平面。

    Configurable microwave deflection system
    57.
    发明授权
    Configurable microwave deflection system 有权

    公开(公告)号：US09837723B2

    公开(公告)日：2017-12-05

    申请号：US14769510

    申请日：2014-02-10

    Applicant: THALES

    Inventor： Mane-Si Laure Lee-Bouhours ,  Antoine Brus ,  Brigitte Loiseaux ,  Thierry Dousset ,  Christian Renard

    IPC: H01Q15/10 ,  H01Q3/14

    CPC classification number: H01Q15/10 ,  H01Q3/14

    Abstract: A configurable deflection system for an incident microwave frequency beam exhibiting a wavelength contained in a band of wavelengths corresponding to the microwave frequencies, comprising: a first and a second diffractive dielectric component suitable for each performing a rotation about a rotation axis Z, the deflection system being suitable for generating a microwave frequency beam by diffraction of the incident microwave frequency beam on the first and second components, the microwave frequency beam being oriented according to an angle that is a function of the angular positioning between the first and said second diffractive components, the first and second components respectively exhibiting a first and second periodic structure of first and second periods according to a first and second axis, the first and second structures respectively comprising a plurality of first and second primary microstructures formed respectively on a first and second substrate of first and second substrate refractive indices.

    Metal plate lens comprising multiple metallic plates with through holes of different sizes
    58.
    发明授权
    Metal plate lens comprising multiple metallic plates with through holes of different sizes 有权

    公开(公告)号：US09799960B2

    公开(公告)日：2017-10-24

    申请号：US14776004

    申请日：2014-03-14

    Applicant: IBARAKI UNIVERSITY

    Inventor： Takehito Suzuki

    IPC: H01Q15/10 ,  H01Q15/04 ,  H01P3/20

    CPC classification number: H01Q15/10 ,  H01P3/20 ,  H01Q15/04

    Abstract: Optical axis as central axis is defined as z-axis, and axes perpendicular to z-axis are defined as x- and y-axis. Metallic flat plates are formed parallel to x-z plane to overlap each other and be separated by a given distance. Multiple flat plates except the top flat plate and bottom flat plate are each provided with multiple through holes. Central flat plates are each provided with through holes of a first radius. Intermediate flat plates arranged between central flat plate and top flat plate and between central flat plate and bottom flat plate are each provided with through holes of a second radius smaller than first radius. Second radius of through holes formed in an intermediate flat plate arranged in a position farther from central flat plate is smaller than second size of through holes formed in an intermediate flat plate arranged in a position closer to central flat plate.

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