Gain Equalized Reflectarray Antenna for High Throughput Satellites
2023 IEEE Radio and Antenna Days of the Indian Ocean (RADIO)(2023)
摘要
A frequency selective beam shaping technique has been applied to broaden the beams at the higher frequency band for dual-band reflectarray antennas, with application to communication satellites to ensure equal beam coverage at both bands. The technique is based on the introduction of phase reversals on a small percentage of the reflectarray cells only at the higher frequency band. Simulated results of a 1.8 m reflectarray at 19.7 and 29.5 GHz show the potential of the proposed method to reduce the roll-off factor at the higher operating frequency, broadening the beams without requiring shaped surfaces.
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