公开(公告)号：WO2023089346A1

公开(公告)日：2023-05-25

申请号：PCT/HU2022/000018

申请日：2022-11-07

Applicant: SHOPGUARD, Korlátolt, Felelősségű, Társaság

Inventor： AMBRUS, Sándor

IPC: H01Q7/00 ,  H01Q1/22 ,  H01Q1/42 ,  G08B13/24

Abstract: The object of this invention is an antenna unit for product protection apparatuses, which has a carrying body (10) assembled from an enclosing piece (11) and a covering piece (12) partially surrounding the enclosing piece (11), where the covering piece (12) has two stem pieces (12a, 12c) and a bridging piece (12b) located between the connecting ends (12d, 12e) of the individual stem pieces (12a, 12c) and connecting them together, there is an angle of inclination (p) of 70 to 110° between the individual stem pieces (12a, 12c) and the bridging piece (12b), in addition it has a signal transmission element (20) made from a conductive material and located at least partly in the enclosing piece (11) of the carrying body (10) and a signal management part-unit (30) electrically connected to the signal transmission element (20), the signal transmission element (20) has at least a single loop- like shape with at least two sections (20a, 20b) at an angle (a) to each other that is not equal to 0°. The characteristic feature of the invention is that the covering piece (12) is made from a material that conducts electricity and there is a free opening (12h) between the free ends (12f, 12g) of the individual stem pieces (12a, 12c) opposite to the connecting ends (12d, 12e), and in this way the covering piece (12) forms a U-shape, and the free opening between (12h) the free ends (12f, 12g) of the stem pieces (12a, 12c) of the covering piece (12) is more distant from the base (2) supporting the antenna unit (1), while the bridging piece (12b) is closer to the base (2).