Analysis Of Multi-Faceted Reflectarray Antenna For Spatial Bandwidth Improvement

This paper presents the analysis of the multifaceted reflectarray (RFA) antenna for spatial bandwidth improvement. Geometries of faceted RFA have been designed by segmenting the phase correcting surface in tilted 3-panel and 5-panel configurations. Phase distribution over RFA surface and directivity variation with frequency have been computed using Geometric Optics (GO) based technique and achieved 6.5% and 7.4% 1-dB gain bandwidth in case of 3-panel and 5-panel faceted RFA, respectively as compared to a flat RFA having 1.8% 1-dB gain bandwidth.