Bobel, T.M.T.M.BobelRabel, M.M.RabelDallmann, T.T.DallmannHeberling, D.D.Heberling2022-03-142022-03-142016https://publica.fraunhofer.de/handle/publica/41068010.1109/GEMIC.2016.7461622For a low cost radar system a serially fed, linear and equidistant waveguide slot antenna has been developed. A meander shaped waveguide path allows a frequency steerable main lobe without additional mechanical or electrical components. The antenna design focused on a maximum steering angle of ±60°. In order to further reduce the costs and simplify fabrication of the antenna a Substrate-Integrated Waveguide (SIW) structure was used. A new concept to reduce the parasitic coupling of these structures has been investigated. To fulfill the requirements on the radiation characteristics and matching of the antenna, a new slot shape and a cavity based waveguide-SIW transition were designed. Simulations and measurement results show that the antenna could be realized successfully.en621conference paper