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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Encinar, J.A. Tienda, C. Carrasco, E. Arrebola, M. Toso, G. |
| Copyright Year | 2010 |
| Description | Author affiliation: Universidad Politécnica de Madrid, Madrid, Spain (Encinar, J.A.; Carrasco, E.) || Universidad de Oviedo, Gijón, Spain (Arrebola, M.) || ESA-ESTEC, Noordwijk, The Netherlands (Tienda, C.; Toso, G.) |
| Abstract | An offset dual reflector antenna using a reflectarray subreflector and a parabolic main reflector has been proposed for beam steering in a limited range by implementing a progressive phase on the sub-reflectarray [1]. This antenna configuration combines the high gain capabilities of the parabolic main reflector with the simplicity of fabricating a small reconfigurable sub-reflectarray, which could be constructed using MEMS switches to provide electronic beam scanning [2]. In the dual-reflector configuration, the main reflector can be substituted by a flat passive reflectarray designed to focus the beam. When compared with conventional dual-reflector antennas, the dual-reflectarray configuration shown in Fig. 1 exhibits some advantages, both from a mechanical point of view, such as a lower volume and ease for folding; and from electrical features, offering capabilities to scan or reconfigure the beam. Furthermore, the proposed dual-reflectarray configuration provides phase control on both reflectarray surfaces [3], which can be used to improve the antenna performances for multiple beams or for beam scanning. In this work, a dual-reflectarray antenna in Ku-band has been designed to steer the beam in a range of 13 degrees. The simulated results obtained by the analysis technique proposed in [4] show acceptable beam scanning capabilities in a frequency band larger than a 10 %. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 379613 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424449675 |
| ISSN | 15223965 |
| DOI | 10.1109/APS.2010.5562013 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-07-11 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Reflector antennas Feeds Antenna radiation patterns Azimuth Microwave antennas Gain |
| Content Type | Text |
| Resource Type | Article |
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