Planare Mehrfrequenzantenne

WO15063036A1 [EN] A flat multi-frequency antenna (10) comprising a first radiating electrode (12) which comprises a first surface (A1) and at least one second radiating electrode (16) which has a second surface (A2). The first surface (A1) has at least one opening (14), and the second radiating electrode (16) is disposed in the opening (14) in spaced relation to the first radiating electrode (12). The first radiating electrode (12) and the second radiating electrode (16) are in a common metallisation layer (18)