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Article Dans Une Revue Applied physics. A, Materials science & processing Année : 2012

Axial ratio improvement of an Archimedean spiral antenna over a radial AMC reflector

Résumé

This paper presents a method to improve the circular polarization of an Archimedean spiral antenna placed over a radial Artificial Magnetic Conductor (AMC). Results have been compared with the same radiating element over a more classical AMC reflector. A prototype of an Archimedean two-wire spiral antenna has been built to operate from 0.5 GHz to 6 GHz. Measurement results with this radial AMC give a relative bandwidth of 79 %, in which the broadside RHCP gain is improved. In this bandwidth the axial ratio of Archimedean spiral antenna placed over a radial AMC is less than 2 dB whereas it is higher than 3 dB with a classical cartesian shape of AMC reflector

Dates et versions

hal-04242724 , version 1 (15-10-2023)

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Citer

M. Grelier, C. Djoma, M. Jousset, S. Mallégol, A. Lepage, et al.. Axial ratio improvement of an Archimedean spiral antenna over a radial AMC reflector. Applied physics. A, Materials science & processing, 2012, 109 (4), pp.1081-1086. ⟨10.1007/s00339-012-7401-9⟩. ⟨hal-04242724⟩
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