| CPC H01Q 1/36 (2013.01) [H01Q 1/243 (2013.01); H01Q 1/44 (2013.01); H01Q 1/48 (2013.01); H01Q 21/0006 (2013.01); H04B 5/70 (2024.01)] | 18 Claims |
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1. An antenna device comprising:
a near field communication chip comprising a first differential signal port and a second differential signal port, the near field communication chip supplying differential excitation current at the first differential signal port and the second differential signal port;
a ground plane comprising a first ground point and a second ground point arranged at an interval from each other, the ground plane forming a conductive path between the first ground point and the second ground point;
a first conductor structure comprising a first feeding end and a first ground end arranged at an interval from each other, the first feeding end being electrically connected to the first differential signal port, the first ground end being electrically connected to the first ground point;
a second conductor structure comprising a second feeding end and a second ground end arranged at an interval from each other, the second feeding end being electrically connected to the second differential signal port, the second ground end being electrically connected to the second ground point; and
a first matching circuit, comprising a first input port electrically connected to the first differential signal port, a second input port electrically connected to the second differential signal port, a first output port electrically connected to the first feeding end, and a second output port electrically connected to the second feeding end, the first matching circuit being configured to match an impedance which is induced when the differential excitation current is transmitted in the conductive loop,
wherein the first conductor structure, the conductive path, and the second conductor structure collectively form a conductive loop for transmission of the differential excitation current.
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