Dual polarized microstrip patch arrays for the next generation of spaceborne synthetic aperture radars

Discusses the requirements and the design of an advanced dual polarized future spaceborne SAR antenna using aperture-coupled microstrip patch elements. Special emphasis is given to achieve a high polarization purity, low loss, good port-to-port isolation and a high bandwidth. Results of a design study on an 8/spl times/1 element subarray as well as on an 8/spl times/8 element breadboard in C-band are presented.