Broadband antenna system for a vehicle

A broadband antenna system (1) for a vehicle, comprising:

• a ground plane (2) circumscribed by a rectangle having major (2a) and minor (2b) sides,
• a dielectric substrate (3) comprising a first portion area (3a),
• a radiating element (4) for operating at at least one frequency band of operation, the radiating element (4) disposed on top of a first portion area (3a) of the substrate (3), and having at least three angles and three sides, a first side (7) being substantially aligned with one side (2a, 2b) of the circumscribed rectangle and a first angle (6) having an apex, the apex being the closest point of the radiating element (4) to the ground plane (2),
• a grounding point (9) disposed at one extreme of the first portion area (3a) of the substrate (3) and coupled to the ground plane (2),
• a feeding element (8) electromagnetically coupled with the radiating element (4) through the apex of the first angle (6), and
• a conductive element (5), electrically isolated from the radiating element (4), disposed on the first portion area (3a) of the substrate (3) and coupled to the grounding point (9), the conductive element (5) having at least a first portion (5′) extending between the radiating element (4) and one of the sides of the first portion area (3a) of the substrate (3),
• wherein each major side (2a) of the ground plane (2) has an electric length (Lgp) of at least 0.13λ, being λ the lowest frequency of the antenna system (1), and wherein the first angle (6) of the radiating element (4) has an aperture lower than 156°.