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

M. Grelier; C. Djoma; M. Jousset; S. Mallégol; A. C. Lepage; X. Begaud

doi:10.1007/s00339-012-7401-9

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

M. Grelier, C. Djoma, M. Jousset, S. Mallégol, A. C. Lepage, X. Begaud

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	1081-1086
Number of pages	6
Journal	Applied Physics A: Materials Science and Processing
Volume	109
Issue number	4
DOIs	https://doi.org/10.1007/s00339-012-7401-9
Publication status	Published - 1 Dec 2012
Externally published	Yes

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title = "Axial ratio improvement of an Archimedean spiral antenna over a radial AMC reflector",

abstract = "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.",

author = "M. Grelier and C. Djoma and M. Jousset and S. Mall{\'e}gol and Lepage, \{A. C.\} and X. Begaud",

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AU - Grelier, M.

AU - Djoma, C.

AU - Jousset, M.

AU - Mallégol, S.

AU - Lepage, A. C.

AU - Begaud, X.

PY - 2012/12/1

Y1 - 2012/12/1

N2 - 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.

AB - 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.

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DO - 10.1007/s00339-012-7401-9

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SP - 1081

EP - 1086

JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 4

ER -

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

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