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

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 loade...

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Bibliographic Details
Main Authors: Hebib, S., Aubert, H., Pascal, O., Fonseca, N.J.G., Ries, L., Lopez, J.-M.E.
Format: Conference Proceeding
Language:English
Subjects:
circularly polarized fields
dual-band antenna
Geometry
Loaded antennas
Planar waveguides
Polarization
pyramidal geometry
Radio frequency
Radio navigation
radio navigation services
Reconfigurability
Satellite antennas
Satellite broadcasting
Switches
Topology
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Summary: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.
ISSN:2164-3342