Dual-Band Dual-Polarized Waveguide Slot Antenna for SAR Applications

The design of a shared-aperture waveguide slot antenna operating in dual-band and dual-polarization (DBDP) is proposed in this letter for synthesis aperture radar (SAR) applications. The frequencies of the antenna are in both L- and C-band with frequency ratio of 4:1. The C-band horizontal-polarized subarray antenna is achieved by 16 V-shaped slots opened on a ridged waveguide, while the vertical-polarized subarray is realized by 16 longitudinal...