LEAKY WAVE ANTENNA

A leaky wave antenna (100), wherein at least one line (110, 111), each having a feed-in point (101, 102), is embedded in an insulating layer (120) composed of foam material. The insulating layer (120) is arranged between an electrically conductive lower layer (130) and an electrically conductive upper layer (140), and a multiplicity of antenna elements in the form of openings along the at least one line (110, 111) are introduced in the upper layer (140). A coupling means is provided in each case between the at least one line (110, 111) and its respective antenna element (150-153, 155-158), said coupling means defining a respective coupling factor, and, proceeding from the respective feed-in point (101, 102), the coupling factor of the respective antenna element (150-153, 155-158) increases along the at least one line (110, 111).