Design and simulation of a high efficiency Rotman lens for mm-wave collision avoidance sensor

摘要

Multi-beam approaches using beamforming antenna array architectures have been identified as one solution for overcoming the limited fields-of-view provided by highly directional mm-wave sensors. They are also ideal front end systems for collision avoidance devices. Rotman lenses offer a compact, rugged and reliable alternative to electronically scanned antenna technologies but architectures that operate At frequencies ＜20 GHz perform poorly at higher frequencies on account of greater losses and dispersion.