Abstract: The disclosure is directed to an antenna assembly (1) comprising a horizontally polarized Vivaldi-type first antenna (5). The first antenna (5) comprises a horizontally polarized first radiator (6) extending in a horizontal plane (xy) having a flower-shaped outline comprising several tapered slots (7) arranged distributed around a radiator center (8). The first radiator (6) is horizontally (xy) extending with respect to the radiator center (8) in an outward direction. In vertical direction (z), the radiator extends by a certain thickness (t). A base plate (9) arranged at a certain distance below the radiator (6) interconnected to the radiator (6) by at least one post (10). A power divider (11) and a feeding stub (12) per tapered slot (7) are arranged between the base plate (9) and the first radiator (6). interconnected to the first radiator (6) for coupling radio signals into the first radiator (6).

Abstract: Disclosed is an antenna, in particular array antenna. The antenna includes an antenna top surface (1a) and an antenna bottom surface (1b). The antenna further includes a waveguide channel structure with a plurality of waveguide end branches (111). Each waveguide end branch (111) opens into an associated waveguide opening (100) in the antenna top surface (1a) in a one-to-one relation, wherein the waveguide openings (100) are arranged in a pattern of rows and columns. A plurality of recesses (101) extends from the antenna top surface (1a) towards the antenna bottom surface (1b), the plurality of recesses (101, 101b) being arranged such that a recess (101b) is present between pairs of neighboring waveguide openings (100) of the same row and/or column.

Abstract: Disclosed is an antenna, in particular array antenna. The antenna includes an antenna top surface (1a) and an antenna bottom surface (1b). The antenna further includes a waveguide channel structure with a plurality of waveguide end branches (111). Each waveguide end branch (111) opens into an associated waveguide opening (100) in the antenna top surface (1a) in a one-to-one relation, wherein the waveguide openings (100) are arranged in a pattern of rows and columns. A plurality of recesses (101) extends from the antenna top surface (1a) towards the antenna bottom surface (1b), the plurality of recesses (101, 101b) being arranged such that a recess (101b) is present between pairs of neighboring waveguide openings (100) of the same row and/or column.

Abstract: An adapter structure for transferring an electromagnetic signal between an electronic component and an antenna, the adapter structure includes an adapter body having a base surface. The adapter structure further includes at least one ridged adapter waveguide channel, wherein the at least one adapter waveguide channel extends from the base surface into the adapter body. The adapter structure further includes an electromagnetic band gap structure with a plurality of band gap elements, wherein the band gap elements are spaced apart relative to each other, project from the base surface and have a front face spaced apart from the base surface. At least one band gap element is arranged as extension of a ridge of an associated adapter waveguide channel.

Abstract: An adapter structure for transferring an electromagnetic signal between an electronic component and an antenna, the adapter structure includes an adapter body having a base surface. The adapter structure further includes at least one ridged adapter waveguide channel, wherein the at least one adapter waveguide channel extends from the base surface into the adapter body. The adapter structure further includes an electromagnetic band gap structure with a plurality of band gap elements, wherein the band gap elements are spaced apart relative to each other, project from the base surface and have a front face spaced apart from the base surface. At least one band gap element is arranged as extension of a ridge of an associated adapter waveguide channel.

Abstract: An antenna arrangement includes a baseplate with a top surface defining a top level and a bottom surface defining a bottom level. First and second cup-shaped antenna radiating elements that have an apex arranged nearby to the top level of the baseplate and opposite to the apex an opening that is arranged distal to the top level of the baseplate. The antenna radiating elements are arranged above the baseplate and are spaced apart by a spacing and electrically interconnected to the baseplate. The first antenna radiating element is electrically interconnected to an inner conductor of a first coaxial cable, the inner conductor being arranged in the region of the apex above the bottom level. The second antenna radiating element is electrically interconnected to an inner conductor of a second coaxial cable, said inner conductor being arranged in the region of the apex above said bottom level.

Abstract: An antenna arrangement includes a baseplate with a top surface defining a top level and a bottom surface defining a bottom level. First and second cup-shaped antenna radiating elements that have an apex arranged nearby to the top level of the baseplate and opposite to the apex an opening that is arranged distal to the top level of the baseplate. The antenna radiating elements are arranged above the baseplate and are spaced apart by a spacing and electrically interconnected to the baseplate. The first antenna radiating element is electrically interconnected to an inner conductor of a first coaxial cable, the inner conductor being arranged in the region of the apex above the bottom level. The second antenna radiating element is electrically interconnected to an inner conductor of a second coaxial cable, said inner conductor being arranged in the region of the apex above said bottom level.