A sectorial Fabry - Perot antenna for radar application

A Fabry - Perot (FP) antenna for radar systems application is proposed. The investigated design allows to fulfill all the radar applications requirements with a simple and robust layout and it is preferable to conventional linear arrays for a number of reasons. The required asymmetric far - field pattern has led to the design of a sectorial FP with a lateral shielded cavity. In order to avoid the need of multiple sources to achieve the requested antenna gain performance, a high reflective FSS (Frequency Selective Surface) has been employed as a partially reflective screen (PRS). A prototype of this antenna was realized and the comparison between measurements and simulations is reported.