| Abstract: | Highly efficient, low cost, easily manufactured SAR antenna arrays with
lightweight low profiles, large instantaneous bandwidths and low SLL are
disclosed. The array topology provides all necessary circuitry within the
available antenna aperture space and between the layers of material that
comprise the aperture. Bandwidths of 15.2 GHz to 18.2 GHz, with 30 dB
SLLs azimuthally and elevationally, and radiation efficiencies above 40%
may be achieved. Operation over much larger bandwidths is possible as
well. |