Substrate integrated waveguide antenna

Abstract

A SIW-antenna (10) is disclosed. The SIW-antenna comprises a SIW-structure (20) extending along a horizontal plane for guiding electromagnetic waves along a longitudinal direction from a first feed (26) to a radiation aperture (27), and a parallel plate resonator (30) arranged at the radiation aperture (27), the parallel plate resonator (30) comprising a first flat portion (31) extending in a first plane parallel with the horizontal plane and a second flat portion (32) extending in a second plane parallel with the horizontal plane, wherein the first and second planes are separate from each other. The first flat portion (31) comprises an additional antenna structure (33) being connected to a second feed (36). The second flat portion (32) comprises a plurality of flat tabs (34) extending in the longitudinal direction. The SIW-structure (20) is configured to radiate electromagnetic waves polarized in a first direction. The additional antenna structure (33) is configured to radiate electromagnetic waves polarized in a second direction. The second direction is orthogonal to the first direction. Also an antenna array (200) comprising a plurality of SPAT antennas (10) as well as an electronic device comprising such an antenna array are disclosed.

Dependencies are inferred from the claim text.