Abstract: A waveguide antenna with an antenna proximal side and an antenna distal side. A number of waveguide openings for transmitting and/or receiving electromagnetic signals to and/or from an environmental space is arranged at the antenna distal side. The waveguide antenna includes an antenna interface structure that includes interface waveguide apertures arranged in an interface carrying surface that extends transverse to a normal axis. Each interface waveguide aperture is coupled with at least one associated waveguide opening such that the respective interface waveguide aperture and the associated waveguide opening(s) are offset with respect to each other transverse to the normal axis. Each interface waveguide aperture and at least one coupled waveguide opening are configured for transmitting and/or receiving electromagnetic signals with respective polarizations rotated against each other.

Abstract: The disclosure is directed to an antenna device (1) comprising a printed circuit board (2) and a thereon arranged electronic component (3). The antenna device (1) comprises at least two individual antenna elements (12) which are interconnected to the electronic component (3) configured to transmit and receive a signal. The antenna elements (12) each comprise at least one waveguide channel (9) interconnecting in the antenna assembly (6). A first waveguide aperture (10) is arranged at a back face (16) of the antenna assembly (6). Said first waveguide aperture (10) is interconnected to the electronic component (3) and configured to transmit and/or receive a signal. A second waveguide aperture (11) is arranged at a front face (17) of the waveguide assembly (6) and is also configured to transmit and/or receive a signal.