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A focusing system based on low-cost foam printed technology is investigated. The design is based on artificial lenses which consist in stacked parallel-plate waveguides of various lengths. The foam technology allows a single block configuration with the primary source. As the dimensions of the lens are at least 10 λ0, full-wave analysis is not appropriate for fast design. A theoretical model [1] based...
Full-wave analysis of large structures that include complex and multiscale objects requires a large computer cost as, for time-domain volumic methods such as Transmission-Line Matrix (TLM) for instance, mesh size should be at least of the order lambda/10 and can be much smaller when details require some mesh refinement. Hybrid methods allow the partition of the structure between a complex geometry...
Collision avoidance radar systems will become standard equipment on vehicles in the near future. Their purpose is to adjust the distance between vehicles and/or alert the driver when dangerous situations arise. Usually located behind the front bumper, these systems need a compact antenna with high gain, to achieve a long-range detection at 76 GHz. As specifications require high gain, electrically...
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