Antenna and associated coupler for transferring an antenna function and corresponding communicating device

A communicating device comprising a first housing for housing an antenna and a second housing for housing a coupler,

• the antenna comprising:
• a substrate,
• a feed point of the antenna and a first grounding point intended to be connected to a ground plane;
• a metallic antenna element pattern printed on one side of the substrate, the antenna element pattern forming an open loop from the feed point to the first grounding point, the loop defining in its center a non-metallic area;
• the antenna being suitable for operating alone, in a first mode, to radiate a radio signal and a second mode in association with a coupler disposed facing and at a distance from the antenna,
• the coupler comprising a rectangular substrate comprising a coupling pattern printed on one side, the coupling pattern comprising a metallic area complementary to a non-metallic area of the antenna intended to be facing and distant from the coupler in such a way that the coupler picks up the signal radiated by the antenna,
• the first housing and the second housing being configured with respect to one another in such a way that the antenna and the coupler can face one another, the metallic area of the coupler then facing the non-metallic area of the antenna, the device comprising two operating modes:
• a first operating mode comprising the antenna alone for radiating a radio signal,
• a second operating mode comprising the antenna and the coupler in such a way as to pick up the signal radiated by the antenna for transferring a radio signal radiated by the antenna to an external antenna suitable for being connected to the coupler.