Design of a Horizontally Polarized Slotted Waveguide Antenna Element for Airborne Ka-PolInSAR System

This paper presents the design of a horizontally polarized slotted waveguide antenna single element with low cross-pol level, low side lobe level and high gain. This antenna will be used for the DLR airborne dual polarized Ka-Band PolInSAR system, which is an extension of the existing airborne DLR F-SAR sensor [1] and it will be used to investigate polarimetric interferometric Synthetic Aperture Radar applications. Based on theoretical analysis an appropriate design has been developed regarding to the electrical and mechanical system specifications. The simulation results show a good fulfillment of the requirements. The measurement results of an 8- slot prototype of the antenna validate used technology and the simulation model.