Antenna system comprising: a first antenna element adapted to a first frequency band; a second antenna element adapted to a second frequency band which is different from the first frequency band; wherein the first antenna element includes: • a radiating structure comprising at least one planar radiating element, the radiating structure being configured to radiate at a frequency in the first frequency band, and • at least one band-stop filter structure comprising at least one planar conductive element, the at least one band-stop filter structure being configured to attenuate a current flow at a frequency in the second frequency band; wherein the at least one planar conductive element is arranged in form of a meander pattern, and is, at one end, electrically connected to the at least one planar radiating element; the at least one planar conductive element extends in a direction substantially in parallel to a direction of the at least one planar radiating element; and the at least one planar conductive element has an electrical length which corresponds to substantially a quarter of a wavelength of the frequency in the second frequency band; wherein • the radiating structure of the first antenna element (110, 210) comprises a plurality of the planar radiating elements, each of which has an electrical length of less than or equal to three/eighth of the wavelength of the frequency in the second frequency band, • the first antenna element (110, 210) comprises a plurality of the band-stop filter structures, each of which includes the at least one planar conductive element (118, 218) arranged in form of a meander pattern, and electrically connected to a different one of the plurality of the planar radiating elements. a first antenna element adapted to a first frequency band; a second antenna element adapted to a second frequency band which is different from the first frequency band; wherein the first antenna element includes: • a radiating structure comprising at least one planar radiating element, the radiating structure being configured to radiate at a frequency in the first frequency band, and • at least one band-stop filter structure comprising at least one planar conductive element, the at least one band-stop filter structure being configured to attenuate a current flow at a frequency in the second frequency band; • a radiating structure comprising at least one planar radiating element, the radiating structure being configured to radiate at a frequency in the first frequency band, and • at least one band-stop filter structure comprising at least one planar conductive element, the at least one band-stop filter structure being configured to attenuate a current flow at a frequency in the second frequency band; wherein the at least one planar conductive element is arranged in form of a meander pattern, and is, at one end, electrically connected to the at least one planar radiating element; the at least one planar conductive element extends in a direction substantially in parallel to a direction of the at least one planar radiating element; and the at least one planar conductive element has an electrical length which corresponds to substantially a quarter of a wavelength of the frequency in the second frequency band; wherein • the radiating structure of the first antenna element (110, 210) comprises a plurality of the planar radiating elements, each of which has an electrical length of less than or equal to three/eighth of the wavelength of the frequency in the second frequency band, • the first antenna element (110, 210) comprises a plurality of the band-stop filter structures, each of which includes the at least one planar conductive element (118, 218) arranged in form of a meander pattern, and electrically connected to a different one of the plurality of the planar radiating elements. • the radiating structure of the first antenna element (110, 210) comprises a plurality of the planar radiating elements, each of which has an electrical length of less than or equal to three/eighth of the wavelength of the frequency in the second frequency band, • the first antenna element (110, 210) comprises a plurality of the band-stop filter structures, each of which includes the at least one planar conductive element (118, 218) arranged in form of a meander pattern, and electrically connected to a different one of the plurality of the planar radiating elements.