- A broadband LTE antenna system for a vehicle, comprising a main LTE antenna and a secondary LTE antenna, both antennas being arranged relative to each other, such as their radiation patterns are perpendicular to each other, and wherein the main LTE antenna comprises: - a ground plane having a first pair of opposing sides, and a second pair of opposing sides such as the ground plane is rectangular or quadrangular, - a dielectric substrate comprising a first portion area, - a radiating element for operating at least one frequency band of operation, the radiating element disposed on top of a first portion area of the substrate, and having at least three angles and three sides, a first side being substantially aligned with one side of the second pair of opposing sides, and a first angle having an apex, the apex being the closest point of the radiating element to the ground plane, - a grounding point disposed at one extreme of the first portion area of the substrate and coupled to the ground plane, - a feeding element electromagnetically coupled with the radiating element through the apex of the first angle, and - a conductive element, electrically isolated from the radiating element, disposed on the first portion area of the substrate and coupled to the grounding point, the conductive element having at least a first portion extending between the radiating element and one of the sides of the first portion area of the substrate, - wherein each side of the ground plane has an electric length (Lgp) of at least 0.13λ, being λ the lowest frequency of the antenna system, and - wherein the first angle of the radiating element has an aperture lower than 156°, and wherein the secondary LTE antenna is arranged at one side of the first pair of opposing sides of the ground plane and orthogonally arranged with respect to the ground plane, and the secondary LTE antenna comprising a radiating branch (34, 35, 36), a connection point coupled with the radiating branch (34, 35, 36) and a ground connection connected to the ground plane of the main LTE antenna, and wherein the secondary LTE antenna further comprises a PCB wherein the secondary LTE antenna is printed. - a ground plane having a first pair of opposing sides, and a second pair of opposing sides such as the ground plane is rectangular or quadrangular, - a dielectric substrate comprising a first portion area, - a radiating element for operating at least one frequency band of operation, the radiating element disposed on top of a first portion area of the substrate, and having at least three angles and three sides, a first side being substantially aligned with one side of the second pair of opposing sides, and a first angle having an apex, the apex being the closest point of the radiating element to the ground plane, - a grounding point disposed at one extreme of the first portion area of the substrate and coupled to the ground plane, - a feeding element electromagnetically coupled with the radiating element through the apex of the first angle, and - a conductive element, electrically isolated from the radiating element, disposed on the first portion area of the substrate and coupled to the grounding point, the conductive element having at least a first portion extending between the radiating element and one of the sides of the first portion area of the substrate, - wherein each side of the ground plane has an electric length (Lgp) of at least 0.13λ, being λ the lowest frequency of the antenna system, and - wherein the first angle of the radiating element has an aperture lower than 156°,