Antenna system, in particular low-pass filter

We generally describe an antenna system (200, 300, 500, 600) that includes a dual polarized radiating element (202, 602) that extends substantially in a first direction that is parallel or substantially parallel to a reflector (212, 704) of the antenna system (200, 300, 500, 600). The dual polarized radiating element (202, 602) is configured to emit electromagnetic waves. The antenna system (200, 300, 500, 600) further includes a low pass filter structure (308) extending substantially in a second direction that is perpendicular or substantially perpendicular to the reflector (212, 704) of the antenna system (200, 300, 500, 600). The low pass filter structure (308) is spaced apart from a central portion of the dual polarized radiating element (202, 602) with respect to the first direction. The antenna system (200, 300, 500, 600) further includes a coupling feeder (210, 302) that electrically couples the low pass filter structure (308) with a central portion of the dual polarized radiating element (202, 602) vi