Low swap aperture for direction finding across extreme wide band

    公开(公告)号:US12298426B2

    公开(公告)日:2025-05-13

    申请号:US17242347

    申请日:2021-04-28

    Abstract: A wideband direction finding (WBDF) aperture employs a limited number of extreme wideband end-fire antenna elements capable of covering a wide frequency bandwidth. Arranging variable sized antenna elements in a specific pattern, the WBDF aperture enables direction finding capability covering an extreme wide frequency band. The pattern arrangement of variable sized elements offers the signal discernment to limit ambiguities in signal angle of arrival. This small form factor design enables the WBDF aperture to be mounted on the surface of a missile, munition, or small UAS wing or fuselage. The WBDF aperture offers a combination of differing sized antenna elements arranged in a specific pattern, combined with direction finding and signal tracking to provide an unambiguous relative azimuth and elevation angle of the target.

    LOW SWAP APERTURE FOR DIRECTION FINDING ACROSS EXTREME WIDE BAND

    公开(公告)号:US20220349989A1

    公开(公告)日:2022-11-03

    申请号:US17242347

    申请日:2021-04-28

    Abstract: A wideband direction finding (WBDF) aperture employs a limited number of extreme wideband end-fire antenna elements capable of covering a wide frequency bandwidth. Arranging variable sized antenna elements in a specific pattern, the WBDF aperture enables direction finding capability covering an extreme wide frequency band. The pattern arrangement of variable sized elements offers the signal discernment to limit ambiguities in signal angle of arrival. This small form factor design enables the WBDF aperture to be mounted on the surface of a missile, munition, or small UAS wing or fuselage. The WBDF aperture offers a combination of differing sized antenna elements arranged in a specific pattern, combined with direction finding and signal tracking to provide an unambiguous relative azimuth and elevation angle of the target.

    TUNABLE ELECTROMAGNETIC DEVICE WITH MULTIPLE METAMATERIAL LAYERS, AND METHOD
    5.
    发明申请
    TUNABLE ELECTROMAGNETIC DEVICE WITH MULTIPLE METAMATERIAL LAYERS, AND METHOD 审中-公开
    具有多个金属层的电容式电磁元件及方法

    公开(公告)号:US20140097996A1

    公开(公告)日:2014-04-10

    申请号:US13648464

    申请日:2012-10-10

    CPC classification number: H01Q1/42 H01Q1/34 H01Q15/002 H01Q15/0086

    Abstract: A tunable electromagnetic device includes at least two overlapping metamaterial layers, wherein the metamaterial layers are selectively tunable by patterned conductive structures that are parts of the metamaterial layers. By selectively altering the properties of the metamaterial layers with the patterned conductive structures, the frequency response of the electromagnetic device can be controlled, to selectively let electromagnetic energy of certain frequencies pass through, or alternatively to prevent pass-through of substantially all frequencies of electromagnetic energy. In addition the frequencies for which electromagnetic energy passes through may be altered by controlling one or more of the tunable metamaterial layers. The tunable electromagnetic device may be used to selectively shield radar or other types of sensors, for example being used as all or part of the skin of a vehicle or other object.

    Abstract translation: 可调谐电磁装置包括至少两个重叠的超材料层,其中超材料层可以通过作为超材料层的部分的图案化导电结构选择性地调节。 通过选择性地改变具有图案化导电结构的超材料层的性质,可以控制电磁装置的频率响应,以选择性地使某些频率的电磁能量通过,或者替代地防止基本上所有电磁频率的通过 能源。 此外,电磁能量通过的频率可以通过控制一个或多个可调谐超材料层来改变。 可调谐电磁装置可用于选择性地屏蔽雷达或其它类型的传感器,例如用作车辆或其他物体的全部或部分皮肤。

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