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The design of an X-band circularly polarized reconfigurable reflectarray antenna is presented. Elements with concentric dual split rings are mechanically rotated by micromotors to achieve phase reconfigurability with low cross-polarization and low element loss. Simulation results show that a maximum gain of 26.43 dB with aperture efficiency of 62.9% is achieved by a reflectarray with 15×15 elements...
The parabolic cylindrical antenna and its reflectarray counterpart are well known for enhanced beam steering capability in the focal plane. However, the radiation performance degrades significantly for wide scan angles, for instance gain dropping and beam broadening, due to increased phase errors. In this paper, by exploiting the phase controlling capabilities in reflectarrays, an improved reflectarray...
With the increasing interest in the applications of large deployable reflector antennas operating at high frequencies, the requirement on the reflector surface accuracy becomes more demanding. Thermal effects inevitably cause certain reflector surface distortions, thus degrading the overall antenna performance. This paper introduces a novel reflector surface distortion compensation technique using...
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