Circular Polarized Quadrifilar Helix Antennas

    公开(公告)号:US20190393610A1

    公开(公告)日:2019-12-26

    申请号:US16445385

    申请日:2019-06-19

    Abstract: Apparatus and systems are disclosed and include a body having a plurality of slots. Each of the plurality of slots includes a first portion, a second portion, and a third portion. The first portion is located on a first surface of the body. The second portion is located on a second surface of the body and forms a helical shape. The third portion is located on a third surface of the body. The first surface and the second surface are non-parallel. The third surface and the second surface are non-parallel. The apparatus includes a plurality of antenna elements that are disposed in a respective one of the plurality of slots. The plurality of antenna elements is configured to receive radio frequency (RF) signals. The apparatus includes a ground plane that is coupled to a first end of each of the plurality of antenna elements.

    ELECTRONIC KEY FOR VEHICLE
    2.
    发明申请

    公开(公告)号:US20180080249A1

    公开(公告)日:2018-03-22

    申请号:US15562147

    申请日:2016-03-17

    Inventor: Shinji WATANABE

    CPC classification number: E05B19/0082 B60R25/24 E05B19/046 G07C2009/00952

    Abstract: An electronic key for a vehicle includes an upper case component of a key case, a lower case component attachable to the upper case component, and a mechanical key that is selected from among a first mechanical key that is used in a state of being totally removed from the key case and a second mechanical key that is used in a protruding state of partially protruding from the key case. The lower case component is selected, so as to correspond to the mechanical key, from among a first lower case component that accommodates the first mechanical key to be removable and a second lower case component that accommodates the second mechanical key to be movable into the protruding state.

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