Radar cross section enhancement using semicylindrical retroreflector based on transformation electromagnetics

摘要

The concept of retroreflectors based on the coordinate transformation is presented to enhance radar cross section for radar systems. A retroreflector mimicking a conventional retroreflector of a cylindrical dielectric embedded in a concave metal is designed with an full-tensor anisotropic materials based on the transformation electromagnetics. In order to validate the concept and design of the retroreflector, circuit simulations are carried out based on the full-tensor equivalent circuit model. Simulation results illuminating the semicylindrical retroreflector with a Gaussian beam shows retroreflection operation and the validity of the concept and design method are confirmed.