A monostatic antenna-reflector system for ultra-short-range radar applications

In this contribution, a novel antenna-reflector system is introduced, which consists of a planar waveguide orthomode transducer, a lens-horn antenna and a transpolarizing reflector. The proposed antenna system eliminates short-range clutter effects like root point reflections and antenna ringing effectively. The setup enables ultra-short-range radar measurements as they are used e.g. for material characterization measurements. Results of 3D-electromagnetic field simulations as well as measurements, that prove the effectiveness of the antenna setup are shown and discussed in detail.