Carbon Fiber Reinforced Polymer with Shredded Fibers: Quasi-Isotropic Material Properties and Antenna Performance

A carbon fiber reinforced polymer (CFRP) laminate, with the top layer consisting of shredded fibers, is proposed and manufactured. The shredded fibers are aligned randomly on the surface to achieve a more isotropic conductivity, as is desired in antenna applications. Moreover, fiber shreds can be re...

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Bibliographic Details
Published in:International journal of antennas and propagation 2017-01, Vol.2017 (2017), p.1-11
Main Authors: Mecklenbräuker, Christoph F., Nicolics, Johann, Gentner, Philipp K., Artner, Gerald
Format: Article
Language:English
Subjects:
Academic libraries
Aeronautics
Anisotropy
Geometry
Investigations
Laboratories
Open access
Permeability
Polymers
Radio frequency
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Summary:A carbon fiber reinforced polymer (CFRP) laminate, with the top layer consisting of shredded fibers, is proposed and manufactured. The shredded fibers are aligned randomly on the surface to achieve a more isotropic conductivity, as is desired in antenna applications. Moreover, fiber shreds can be recycled from carbon fiber composites. Conductivity, permittivity, and permeability are obtained with the Nicolson-Ross-Weir method from material samples measured inside rectangular waveguides in the frequency range of 4 to 6 GHz. The decrease in material anisotropy results in negligible influence on antennas. This is shown by measuring the proposed CFRP as ground plane material for both a narrowband wire monopole antenna for 5.9 GHz and an ultrawideband conical monopole antenna for 1–10 GHz. For comparison, all measurements are repeated with a twill-weave CFRP.
ISSN:1687-5869
1687-5877
DOI:10.1155/2017/6152651