Maximal bandwidth of an archimedean spiral antenna above a reflector

Christopher Djoma; Michel Jousset; Anne Claire Lepage; Stephane Mallegol; Christian Renard; Xavier Begaud

doi:10.1109/LAWP.2014.2303858

Maximal bandwidth of an archimedean spiral antenna above a reflector

Christopher Djoma, Michel Jousset, Anne Claire Lepage, Stephane Mallegol, Christian Renard, Xavier Begaud

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

Abstract

In this letter, the maximal achievable bandwidth of an Archimedean spiral antenna above a reflector is investigated. This bandwidth is defined by the frequency range where the gain in the broadside direction is higher than the case without a reflector. To determine this theoretical bandwidth, we propose an analysis consisting in replacing the Archimedean spiral antenna by a bidirectional elliptical plane-waves source above an infinite reflector. Thanks to this approximation, it is possible to evaluate this bandwidth with a simple analytical expression, which is defined by constructive interferences between two plane waves. The maximal bandwidth obtained from this formula is equal to 5:1 for a metallic reflector. Simulations and measurements are then presented in order to confirm this result.

Original language	English
Article number	6729034
Pages (from-to)	333-336
Number of pages	4
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	13
DOIs	https://doi.org/10.1109/LAWP.2014.2303858
Publication status	Published - 19 Mar 2014
Externally published	Yes

Keywords

Archimedean spiral antenna
artificial magnetic conductor (AMC)
perfect electric conductor (PEC)
perfect magnetic conductor (PMC)
wideband reflector

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10.1109/LAWP.2014.2303858

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title = "Maximal bandwidth of an archimedean spiral antenna above a reflector",

abstract = "In this letter, the maximal achievable bandwidth of an Archimedean spiral antenna above a reflector is investigated. This bandwidth is defined by the frequency range where the gain in the broadside direction is higher than the case without a reflector. To determine this theoretical bandwidth, we propose an analysis consisting in replacing the Archimedean spiral antenna by a bidirectional elliptical plane-waves source above an infinite reflector. Thanks to this approximation, it is possible to evaluate this bandwidth with a simple analytical expression, which is defined by constructive interferences between two plane waves. The maximal bandwidth obtained from this formula is equal to 5:1 for a metallic reflector. Simulations and measurements are then presented in order to confirm this result.",

keywords = "Archimedean spiral antenna, artificial magnetic conductor (AMC), perfect electric conductor (PEC), perfect magnetic conductor (PMC), wideband reflector",

author = "Christopher Djoma and Michel Jousset and Lepage, \{Anne Claire\} and Stephane Mallegol and Christian Renard and Xavier Begaud",

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doi = "10.1109/LAWP.2014.2303858",

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T1 - Maximal bandwidth of an archimedean spiral antenna above a reflector

AU - Djoma, Christopher

AU - Jousset, Michel

AU - Lepage, Anne Claire

AU - Mallegol, Stephane

AU - Renard, Christian

AU - Begaud, Xavier

PY - 2014/3/19

Y1 - 2014/3/19

N2 - In this letter, the maximal achievable bandwidth of an Archimedean spiral antenna above a reflector is investigated. This bandwidth is defined by the frequency range where the gain in the broadside direction is higher than the case without a reflector. To determine this theoretical bandwidth, we propose an analysis consisting in replacing the Archimedean spiral antenna by a bidirectional elliptical plane-waves source above an infinite reflector. Thanks to this approximation, it is possible to evaluate this bandwidth with a simple analytical expression, which is defined by constructive interferences between two plane waves. The maximal bandwidth obtained from this formula is equal to 5:1 for a metallic reflector. Simulations and measurements are then presented in order to confirm this result.

AB - In this letter, the maximal achievable bandwidth of an Archimedean spiral antenna above a reflector is investigated. This bandwidth is defined by the frequency range where the gain in the broadside direction is higher than the case without a reflector. To determine this theoretical bandwidth, we propose an analysis consisting in replacing the Archimedean spiral antenna by a bidirectional elliptical plane-waves source above an infinite reflector. Thanks to this approximation, it is possible to evaluate this bandwidth with a simple analytical expression, which is defined by constructive interferences between two plane waves. The maximal bandwidth obtained from this formula is equal to 5:1 for a metallic reflector. Simulations and measurements are then presented in order to confirm this result.

KW - Archimedean spiral antenna

KW - artificial magnetic conductor (AMC)

KW - perfect electric conductor (PEC)

KW - perfect magnetic conductor (PMC)

KW - wideband reflector

U2 - 10.1109/LAWP.2014.2303858

DO - 10.1109/LAWP.2014.2303858

M3 - Article

AN - SCOPUS:84900572080

SN - 1536-1225

VL - 13

SP - 333

EP - 336

JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

M1 - 6729034

ER -

Maximal bandwidth of an archimedean spiral antenna above a reflector

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Keywords

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