Dual-polarized planar lens antenna designed with a quad-ridged frequency selective surface
[EN] This letter presents a microwave planar lens illuminated by a radially corrugated horn antenna. The lens is formed by a set of 5x5 multilevel unit cells working as a frequency selective surface. Each layer of the unit cells is formed by a square metallic ring with two sets of orthogonal stubs....
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/159341 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/159341 |
| Access Level: | acceso abierto |
| Palabra clave: | Frequency selective surfaces Lens antennas Reflector antenna feeds Satellite antennas TEORIA DE LA SEÑAL Y COMUNICACIONES |
| Sumario: | [EN] This letter presents a microwave planar lens illuminated by a radially corrugated horn antenna. The lens is formed by a set of 5x5 multilevel unit cells working as a frequency selective surface. Each layer of the unit cells is formed by a square metallic ring with two sets of orthogonal stubs. The length of each set of stubs controls the transmission phase shift for each polarization, so that the lens can be configured independently for two orthogonal polarizations. The lens presented in this letter makes use of this operation to compensate the phase profile of the radiation pattern generated by the feeder. A prototype, with the lens located at 0.59 lambda from the feeder, has been fabricated. Measured results show a maximum gain above 14.44 dBi within the operating frequency band (12.55-13.10 GHz), and a crosspolar level below -32 dB within the HPBW. |
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