Abstract
This paper reports on the performance comparison of different structures of reflectarray resonant elements operating in X-band frequency range. A thorough investigation has been carried out in terms of reflecting area, surface current density, reflection loss, 10% bandwidth, reflection phase and Figure of Merit (FoM). Predicted results based on Finite Integral Method (FIM) demonstrate that rectangular patch element with widest reflecting area of 105.46 mm 2 and surface current density of 162A/m is shown to offer minimum reflection loss and static phase range of 0.23 dB and 120° respectively, whereas triangular loop with a smallest reflecting area of 7.46 mm 2 and surface current density of 3925A/m exhibits maximum reflection loss and static phase range of 3.90 dB and 190°. Moreover it has been shown that FoM value increases with an increase in static phase range performance.
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