Antenna system configured for a vehicle comprising a first directive antenna device and a second antenna device, both antenna devices for operating at a frequency band of operation, and a reflector plane for both antenna devices, characterised in that, the first directive antenna device comprises: a first ground plane, a first dielectric substrate disposed on the first ground plane, a first antenna group disposed on the first dielectric substrate, wherein the first antenna group comprises a first radiating conductor and a second radiating conductor arranged together forming a first configuration, wherein both radiating conductors (6, 8) are connected to the reflector plane by first transmission lines configured for feeding the first antenna group, wherein the reflector plane is disposed forming an angle ranging from 60 to 90 degrees with respect to the first dielectric substrate, said first directive antenna device radiating in a direction of radiation, and wherein the second antenna device is connected to the first directive antenna device and configured for radiating in an opposing direction to the direction of radiation of the first directive antenna device, wherein the second antenna device is configured as a second directive antenna device comprising: a second ground plane, a second dielectric substrate disposed on the second ground plane, a second antenna group disposed on the second dielectric substrate, wherein the second antenna group comprises a third radiating conductor and a fourth radiating conductor arranged together forming a second configuration, wherein both third and fourth radiating conductors (14, 15) are connected to the opposite side of the reflector plane wherein the first antenna group is connected, wherein both third and fourth radiating conductors (14, 15) are connected by means of second transmission lines configured for feeding the second antenna group and providing a shorted to the second ground plane, wherein the reflector plane is disposed forming an angle ranging from 60 to 90 degrees with respect to the second dielectric substrate, wherein, the first transmission lines are formed by two microstrip transmission lines, a first line that extends from a microstrip transmission feeding line coming into the reflector plane for feeding the first directive antenna device, and a second line, parallely disposed to the first line, providing the shorted to the first ground plane at the one of its ends closest to the reflector plane, the first line connected to the first radiating conductor and the second line connected to the second radiating conductor, both lines (17, 18) with a length of a one-fourth of an effective wavelength λ1 corresponding to the centre frequency of the frequency band of operation, and wherein the second transmission lines are formed by two microstrip transmission lines, a third line that extends from the microstrip transmission feeding line coming into the reflector plane for feeding the second directive antenna device, and a fourth line, parallely disposed to the third line, providing a second shorted to the second ground plane at the one of its ends closest to the reflector plane, the third line connected to the third radiating conductor and the fourth line connected to the fourth radiating conductor, both lines (20, 21) with a length of a one-fourth of an effective wavelength λ1 corresponding to the centre frequency of the frequency band of operation. a first ground plane, a first dielectric substrate disposed on the first ground plane, a first antenna group disposed on the first dielectric substrate, a second ground plane, a second dielectric substrate disposed on the second ground plane, a second antenna group disposed on the second dielectric substrate, wherein the second antenna group comprises a third radiating conductor and a fourth radiating conductor arranged together forming a second configuration, wherein both third and fourth radiating conductors (14, 15) are connected to the opposite side of the reflector plane wherein the first antenna group is connected, wherein both third and fourth radiating conductors (14, 15) are connected by means of second transmission lines configured for feeding the second antenna group and providing a shorted to the second ground plane,