Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Study and Design of a Diferentially Fed Tapered Slot Antenna Array
Year:2010
Research Areas
  • Engineering
Information
Abstract
The results of a parametric study and design of an ultrawideband dual-polarized array of differentially-fed tapered slot antenna elements are presented. We examine arrays of bunny-ear antennas and discuss the capabilities and limitations of differential antenna technology. As we focus on radio astronomical applications, the absence of a balancing-feed circuit not only reduces the first-stage noise contribution associated to losses in the feed, but also leads to a cost reduction. Common-modes are supported by the antenna structure when a third conductor is present, such as a ground plane. We demonstrate that anomalies may occur in the differential-mode scan impedance. Knowledge of both types of scan impedances, differential and common mode, is required to properly design differential LNAs and to achieve optimal receiver sensitivity. A compromise solution is proposed based on the partial suppression of the undesired common-mode currents through a (low loss) balancing-dissipation technique. A fully steerable design up to 45 in both principal planes is achieved.
International
Si
JCR
Si
Title
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
ISBN
0018-926X
Impact factor JCR
2,011
Impact info
Volume
58
Journal number
1
From page
68
To page
78
Month
ENERO
Ranking
Participants
  • Autor: Vicente Gonzalez Posadas (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: DIEMAG: Desarrollo e Investigación Electromagnética
  • Departamento: Ingeniería Audiovisual y Comunicaciones
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)