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Martínez de Rioja, Daniel and Martínez de Rioja, Eduardo and Encinar Garcinuño, José Antonio and Florencio Díaz, Rafael and Toso, Giovanni (2018). Reflectarray to generate four adjacent beams per feed for multi-spot satellite antennas. "IEEE Transactions on Antennas and Propagation", v. 67 (n. 2); pp. 1265-1269. ISSN 0018-926X. https://doi.org/10.1109/TAP.2018.2880117.
Title: | Reflectarray to generate four adjacent beams per feed for multi-spot satellite antennas |
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Author/s: |
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Item Type: | Article |
Título de Revista/Publicación: | IEEE Transactions on Antennas and Propagation |
Date: | November 2018 |
ISSN: | 0018-926X |
Volume: | 67 |
Subjects: | |
Freetext Keywords: | Reflectarray; beam squint; coupled dipoles; multibeam antennas; satellite antennas |
Faculty: | E.T.S.I. Telecomunicación (UPM) |
Department: | Otro |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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This contribution describes a design concept of a reflectarray antenna to produce four adjacent beams per feed through the simultaneous use of polarization and frequency discrimination. The feed position is computed to produce two adjacent beams in different frequencies accounting for the beam squint effect, which ensures a minimum phase variation between the phase distributions at the two frequencies. The other two beams in orthogonal polarization are generated by implementing in the reflectarray a different phase-shift for each polarization. This contribution presents the design, manufacturing and measurement of a 43-cm demonstrator that operates at transmit frequencies in Ka-band. The proposed concept can be suitable for multiple spot beam satellites in Ka-band, enabling a reduction in the number of antennas and feeds needed to provide the multi-spot coverage.
Item ID: | 53671 |
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DC Identifier: | https://oa.upm.es/53671/ |
OAI Identifier: | oai:oa.upm.es:53671 |
DOI: | 10.1109/TAP.2018.2880117 |
Official URL: | https://ieeexplore.ieee.org/document/8529238 |
Deposited by: | Memoria Investigacion |
Deposited on: | 04 Mar 2019 17:54 |
Last Modified: | 22 Mar 2023 18:52 |