Antenna device (50; 60; 70; 80; 90; 120; 130) comprising: a reflector (10; 20; 40; 50), comprising a substrate; a plurality of reflector structures (14; 14-1-4) arranged on or in the substrate and configured to reflect an incident electromagnetic wave; and an electronic antenna control circuit (18; 18a-d) arranged on or in the substrate; the antenna device further comprising: an antenna (38; 38') arranged on the substrate; and a subreflector (42; 42') configured to reflect the electromagnetic wave emitted by the antenna (38; 38') at least partly in the direction of the plurality of reflector structures (14; 14-1-4), such that the electromagnetic wave reflected by the subreflector (42; 42') is directed in the direction of the plurality of reflector structures (14; 14-1-4) and reflected again by the same; wherein the antenna (38; 38') is connected to the electronic antenna control circuit (18; 18a-d) and configured to generate the electromagnetic wave based on a control of the electronic antenna control circuit (18; 18a-d) and to emit the same in a direction of the subreflector (42; 42'); and wherein the plurality of reflector structures (14; 14-1-4) are arranged in at least two differing substrate planes (22a, 22b) that are arranged parallel to a substrate surface that is arranged facing a direction in which the electromagnetic wave is reflected. a reflector (10; 20; 40; 50), comprising a substrate; a plurality of reflector structures (14; 14-1-4) arranged on or in the substrate and configured to reflect an incident electromagnetic wave; and an electronic antenna control circuit (18; 18a-d) arranged on or in the substrate; a substrate; a plurality of reflector structures (14; 14-1-4) arranged on or in the substrate and configured to reflect an incident electromagnetic wave; and an electronic antenna control circuit (18; 18a-d) arranged on or in the substrate; the antenna device further comprising: an antenna (38; 38') arranged on the substrate; and a subreflector (42; 42') configured to reflect the electromagnetic wave emitted by the antenna (38; 38') at least partly in the direction of the plurality of reflector structures (14; 14-1-4), such that the electromagnetic wave reflected by the subreflector (42; 42') is directed in the direction of the plurality of reflector structures (14; 14-1-4) and reflected again by the same; wherein the antenna (38; 38') is connected to the electronic antenna control circuit (18; 18a-d) and configured to generate the electromagnetic wave based on a control of the electronic antenna control circuit (18; 18a-d) and to emit the same in a direction of the subreflector (42; 42'); and wherein the plurality of reflector structures (14; 14-1-4) are arranged in at least two differing substrate planes (22a, 22b) that are arranged parallel to a substrate surface that is arranged facing a direction in which the electromagnetic wave is reflected. an antenna (38; 38') arranged on the substrate; and a subreflector (42; 42') configured to reflect the electromagnetic wave emitted by the antenna (38; 38') at least partly in the direction of the plurality of reflector structures (14; 14-1-4), such that the electromagnetic wave reflected by the subreflector (42; 42') is directed in the direction of the plurality of reflector structures (14; 14-1-4) and reflected again by the same; wherein the antenna (38; 38') is connected to the electronic antenna control circuit (18; 18a-d) and configured to generate the electromagnetic wave based on a control of the electronic antenna control circuit (18; 18a-d) and to emit the same in a direction of the subreflector (42; 42'); and wherein the plurality of reflector structures (14; 14-1-4) are arranged in at least two differing substrate planes (22a, 22b) that are arranged parallel to a substrate surface that is arranged facing a direction in which the electromagnetic wave is reflected.