Abstract: One antenna module includes a first circuit board and a second circuit board connected to the first circuit board. The antenna module includes a first antenna disposed on the first circuit board. The antenna module also includes a second antenna disposed on the second circuit board. The second circuit board has a first side and a second side opposite the first side. The second antenna includes a first parasitic strip and a second parasitic strip. The first parasitic strip is disposed on the first side of the second circuit board, and the second parasitic strip is disposed on the second side of the second circuit board.

Abstract: One antenna module includes a first circuit board and a second circuit board connected to the first circuit board. The antenna module includes a first antenna disposed on the first circuit board. The antenna module also includes a second antenna disposed on the second circuit board. The second circuit board has a first side and a second side opposite the first side. The second antenna includes a first parasitic strip and a second parasitic strip. The first parasitic strip is disposed on the first side of the second circuit board, and the second parasitic strip is disposed on the second side of the second circuit board.

Abstract: A device for opening and closing a vessel containing a metal in the liquid state. The device comprises a frustoconical sealing stopper extended by a guide rod, and a means for maneuvering the sealing stopper including two arms of different lengths, which are parallel to each other in the position for closing the device, a first, movable connecting element to which the arms are rotatably joined at one end thereof, the first connecting element being fixed to the guide rod, and a second connecting element fixed to the lateral wall of the vessel, to which the arms are rotatably joined at the other end. The arms are arranged such that the shorter of the two arms is the further from the vessel while the apparatus is in the closed position.