Reconfigurable pyramidal antenna loaded by a cut-off waveguide–application to ARNS/RNSS services

Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany

Tagungsband: EuCAP 2009

Seiten: 4Sprache: EnglischTyp: PDF

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Hebib, Sami; Aubert, Hervé (LAAS-CNRS, University of Toulouse, 7 avenue du Colonel Roche, 31077, Toulouse, France)
Hebib, Sami; Pascal, Olivier (LAME-UPS, University of Toulouse, 118 route de Narbonne, 31062, Toulouse, France)
Fonseca, Nelson J. G.; Ries, Lionel; Lopez, Jean-Marc E. (CNES, 18 avenue Edouard Belin, 31401, Toulouse, France)
Aubert, Hervé (INPT-ENSEEIHT, 2 rue Charles Camichel, 31071, Toulouse, France)

A novel reconfigurable and circularly polarized antenna topology for satellite application services, based on a pyramidal geometry, is proposed. Frequency agility is simply obtained by loading the radiating elements by Radio-Frequency switches. The ground plane of the antenna is perforated and loaded by a cut-off and open-ended waveguide. The length of this waveguide is adjusted to achieve a good trade-off between rear radiation and impedance matching. A specific application of this original topology is described in this paper. It consists in the design of a reconfigurable dual-band antenna for Aeronautical Radio Navigation Services (ARNS) and Radio Navigation Satellite Services (RNSS). The computed input return loss is lower than -10 dB in all the considered frequency bands and quasi-hemispheric radiation patterns are obtained. These results are in good agreement with the required Radio Navigation specifications.