The present invention discloses an electrical connector for electrically connecting a coaxial cable, which comprises a pin and a shield separated by a dielectric element and protected by an insulated layer, to an antenna disposed on a thin support. the electrical connector comprises a shield part comprising at least one leg and a bridge, preferably two legs separated by the bridge, to clamp the shield between the bridge of the shield part and the antenna and to electrically connect the shield to the antenna and a pin part comprising at least one leg and a bridge, preferably two legs separated by the bridge, to clamp the pin between the bridge of pin part and the antenna and to electrically connect the pin to the antenna, the pin part is electrically isolated from the shield part, each of the at least one leg of the shield part comprises at least a shield partʼs penetration means designed to penetrate through the thin support; the at least a shield partʼs penetration means and the at least one leg of the shield part are not coplanar. The present invention relates also to an antenna system comprising such electrical connector, to a vehicle comprising such antenna system and associated method.