Fast simulation technique for ACC radar integration in complex environments at 76–77GHz

This paper describes several simulation techniques [1] for ACC antenna integration in complex environments (radomes, bumpers) at 76-77 GHz. The first step exposes the antenna architecture. The second step follows with the antenna equivalent model techniques. Starting with the antenna design, one can replace the antenna by an equivalent source (near fields, spherical modes,...) to perform the ACC radar integration steps. Due to the high frequency ACC application, and due to the large electrical size of the complex structures, fast simulation techniques (MLFMM, RL-GO, MoM-GF,...) are used. The aim is to end up with a good trade off between simulation runtime and memory consumption, with accurate results compared to classical full wave techniques. Two integration scenarios are presented: The first one with a monolayer bumper structure and the second scenario with a multilayer bumper assembly taking into account the painting layers.