Integrated unit (1) having a connector (3) mounted on a printed circuit (2), the connector having a support (4) in which are placed a first blade (5) and a second blade (10) linked to the printed circuit, the first blade having on an upper side (8) of the support, an extension (7) forming an antenna (6). This first blade is preferably formed by the metallisation of the plastic support. The second blade comes into contact with the first blade. The support has a cavity (18) to receive a coaxial plug (25) and thus to switch the connection between the first and second blades, for a new connection between this second blade and the coaxial plug.