Broadband active differential array for the mid-frequency SKA band

González Posadas, Vicente; García Muñoz, Luis Enrique; Segovia Vargas, Daniel; García Pérez, Oscar; Ugarte Muñoz, Eduardo; Serna Puente, José Manuel y López Fernández, J. A. (2014). Broadband active differential array for the mid-frequency SKA band. "IEEE Antennas and Propagation Magazine", v. 56 (n. 2); pp. 27-38. ISSN 1045-9243. https://doi.org/10.1109/MAP.2014.6837064.

Descripción

Título: Broadband active differential array for the mid-frequency SKA band
Autor/es:
  • González Posadas, Vicente
  • García Muñoz, Luis Enrique
  • Segovia Vargas, Daniel
  • García Pérez, Oscar
  • Ugarte Muñoz, Eduardo
  • Serna Puente, José Manuel
  • López Fernández, J. A.
Tipo de Documento: Artículo
Título de Revista/Publicación: IEEE Antennas and Propagation Magazine
Fecha: Abril 2014
Volumen: 56
Materias:
Palabras Clave Informales: antenna phased arrays, dielectric-loaded antennas, low noise amplifiers, radiotelescopes, receiving antennas, slot antenna arrays, ultra wideband antennas
Escuela: E.T.S.I. y Sistemas de Telecomunicación (UPM)
Departamento: Teoría de la Señal y Comunicaciones
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

This paper presents the design and characterization process of an active array demonstrator for the mid-frequency range (i.e., 300 MHz-1000 MHz) of the future Square Kilometre Array (SKA) radio telescope. This demonstrator, called FIDA3 (FG-IGN: Fundación General Instituto Geográfico Nacional - Differential Active Antenna Array), is part of the Spanish contribution for the SKA project. The main advantages provided by this design include the use of a dielectric-free structure, and the use of a fully-differential receiver in which differential low-noise amplifiers (LNAs) are directly connected to the balanced tapered-slot antennas (TSAs). First, the radiating structure and the differential low-noise amplifiers were separately designed and measured, obtaining good results (antenna elements with low voltage standing-wave ratios, array scanning capabilities up to 45°, and noise temperatures better than 52 K with low-noise amplifiers at room temperature). The potential problems due to the differential nature of the proposed solution are discussed, so some effective methods to overcome such limitations are proposed. Second, the complete active antenna array receiving system was assembled, and a 1 m2 active antenna array tile was characterized.

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Sin especificarEC2009-14525-C02-01Sin especificarSin especificarEuropean Community Framework Programme 6, Square Kilometre Array Design Studies (SKADS), contract No. 011938

Más información

ID de Registro: 36175
Identificador DC: http://oa.upm.es/36175/
Identificador OAI: oai:oa.upm.es:36175
Identificador DOI: 10.1109/MAP.2014.6837064
URL Oficial: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6837064&filter%3DAND%28p_IS_Number%3A6837052%29
Depositado por: Memoria Investigacion
Depositado el: 12 Feb 2016 15:42
Ultima Modificación: 12 Feb 2016 15:42
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