Compact dipole antenna for RFID tag

    公开(公告)号:US09887464B2

    公开(公告)日:2018-02-06

    申请号:US15171670

    申请日:2016-06-02

    CPC classification number: H01Q9/285 H01Q1/2225 H01Q1/36 H01Q1/38 H01Q21/24

    Abstract: Provided is a compact dipole antenna for a radio frequency identification (RFID) tag. The antenna includes a substrate, a dipole radiator including a first dipole element and a second dipole element, in each of which a first meander line formed in a meandering shape and an arm configured of a triangular pattern which is an end connected to the first meander line, are arranged to face each other, wherein the first and second dipole elements are arranged on the substrate to be perpendicular to each other, and an impedance matcher, which includes a second meander line formed in a meandering shape, is formed at a point at which the first and second dipole elements are perpendicular to each other, and performs an impedance matching between the antenna and an RFID tag chip through the second meander line.

    Broadband circularly polarized antenna using metasurface

    公开(公告)号:US09831557B2

    公开(公告)日:2017-11-28

    申请号:US15171633

    申请日:2016-06-02

    Abstract: Provided is a broadband circularly polarized antenna using a metasurface. The antenna includes a lower substrate, an upper substrate stacked on the lower substrate, a radiator, which is located between the lower substrate and the upper substrate, has a rectangular patch shape in which two triangular removed parts are formed by removing opposite corners in a triangular shape, extends so as to have a predetermined width and length from one end of a hypotenuse of one triangular removed part of the triangular removed parts, and includes an extended strip having a feed hole formed therein, and the metasurface formed on an upper surface of the upper substrate and including a plurality of unit cells. The antenna has improved performance, such as a low profile, a broadband circular polarization characteristic, a high gain characteristic, and the like.

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