Abstract
A dual-band reflectarray antenna composed of notched rectangular dielectric resonators (NR-DR) of variable height is introduced in this letter. A single unit cell is designed to operate for C-band and X-band. All the elements are effectively used for dual-band operation. The proposed reflectarray provides wider bandwidth for both bands (C/X bands) when compared to conventional microstrip-based reflectarray antennas. Furthermore, the notch creates some space that can be used to incorporate active elements, RF/MEMS switches to achieve reconfigurable characteristics.
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