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Descripción
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| This paper describes a 3-D bifocal design technique for offset dual-reflectarray antennas (DRAAs) with application to multibeam satellite antennas in Ka -band. The bifocal technique has been used to obtain beams closer than those obtained with a single-focus antenna and, at the same time, to improve the performance of the extreme beams. The technique has been applied to design a multibeam DRAA in an offset compact range configuration to provide 1.12° separation between adjacent beams at 19.7 GHz. A small-scale bifocal DRAA demonstrator has been designed, fabricated, and tested. The demonstrator generates 10 beams alternating in dual-linear polarization when the antenna is illuminated by five adjacent feeds, but the technique can be extended to circular polarization. The results are in a good agreement with the design requirements in the frequency band from 19.2 to 20.2 GHz. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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Ieee Transactions on Antennas And Propagation (JCR Q1) |
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ISSN
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0018-926X |
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Factor de impacto JCR
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4,13 |
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Información de impacto
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Datos JCR del año 2017 |
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Volumen
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67 |
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DOI
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10.1109/TAP.2018.2877298 |
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Número de revista
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1 |
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Desde la página
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450 |
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Hasta la página
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460 |
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Mes
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ENERO |
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Ranking
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