A slot spiral in carbon-fibre composite laminate as a conformal load-bearing antenna

Daliri, A, Wang, C, Galehdar, A, Tian, X, John, S, Rowe, W and Ghorbani, K 2013, 'A slot spiral in carbon-fibre composite laminate as a conformal load-bearing antenna', Journal of Intelligent Material Systems and Structures, vol. 25, no. 1, pp. 1295-1305.


Document type: Journal Article
Collection: Journal Articles

Title A slot spiral in carbon-fibre composite laminate as a conformal load-bearing antenna
Author(s) Daliri, A
Wang, C
Galehdar, A
Tian, X
John, S
Rowe, W
Ghorbani, K
Year 2013
Journal name Journal of Intelligent Material Systems and Structures
Volume number 25
Issue number 1
Start page 1295
End page 1305
Total pages 11
Publisher Sage Publications
Abstract Conformal load-bearing antenna structures, which afford load-bearing structures with radar capability, are a promising technology to reduce weight and drag of air vehicles. This article presents an investigation of the mechanical and electromagnetic performance of slot log-spiral antenna in carbon-fibre composite structures. Compared with traditional rectangular slots, equiangular slot spiral antenna is found to offer broader bandwidth and better mechanical strength. Through experimental testing and finite element analyses, a new tip design is proposed that can significantly reduce the stress concentration of the non-load-bearing log-spiral antenna. Results of mechanical tests also show that the compressive strength of a carbon-fibre composite plate featuring a spiral slot is comparable with that pertinent to a plate with a circular hole of the same size. Filling the slots with epoxy resin can further enhance the compressive strength.
Subject Electrical and Electronic Engineering not elsewhere classified
Antennas and Propagation
Keyword(s) Spiral antenna
Conformal load-bearing antenna structure
Stress concentration factor
Residual compressive strength
DOI - identifier 10.1177/1045389X13489362
Copyright notice © The Author(s) 2013
ISSN 1045-389X
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Created: Wed, 31 Jul 2013, 12:37:00 EST by Catalyst Administrator
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