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A frequency steerable Substrate-Integrated Waveguide slot antenna for 77 GHz radar application

: Bobel, T.M.; Rabel, M.; Dallmann, T.; Heberling, D.


Institute of Electrical and Electronics Engineers -IEEE-:
10th German Microwave Conference, GeMIC 2016. Proceedings : 14-16 March 2016, Bochum, Germany
Piscataway, NJ: IEEE, 2016
ISBN: 978-1-4673-9887-9
ISBN: 978-3-9812668-7-0
German Microwave Conference (GeMiC) <10, 2016, Bochum>
Fraunhofer FHR ()

For 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.