Design and experimental results of a dual-frequency folded reflector antenna are presented. With an effective diameter of 180 mm and a depth of 60 mm, gain values of 25 and 30 dB at 20 and 30 GHz, respectively, have been achieved. Beamwidths are 6.2° at 20 GHz and 3.7°/4° at 30 GHz.
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Ren et al. (2013) studied this question.
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