The application relates to a connector, intended to transmit radio frequency RF signals, of longitudinal axis X, including: a central contact under the form of an elongated flat strip which at least one of its ends is shaped as a fork with two flexible branches to define inwardly a cavity extending along the axis X for receiving a contact pin of one complementary connector, the two flexible branches of the fork being configured such that to apply a contact force to the contact pin; at least one solid insulating structure in which the central contact is mechanically retained, one of its ends of the insulating structure being configured to let the two flexible branches to move freely radially and to guide the contact pin while enabling its swivelling when inserted into the cavity (C) defined by the fork.