نویسندگان
1 دانشگاه صنعتی خواجه نصیرالدین توسی، دانشجوی دکتری
2 دانشگاه صنعتی خواجه نصیرالدین توسی، دکترای مخابرات
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
A novel technique for acquiring high aperture efficiency in dual reflectarray antennas (DRA) is presented. This technique is performed by using a shaped beam sub-reflectarray which gives optimum illumination on the main reflectarray aperture. Applying this technique resolves the inherent deficiency of reflectarrays; which is the impossibility of controlling elements amplitude. In this regard, it has been shown that using this feature, the aperture efficiency of a classic dual reflectarray antenna can be enhanced significantly by optimally shaping the sub-reflectarray radiation pattern. Theoretical analysis demonstrates an improvement of about 12 % in antenna aperture efficiency comparing with a conventional dual reflectarray antenna.
کلیدواژهها [English]
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