Reducing the attenuation in CFRP waveguide using carbon fiber veil

Rudd, M, Baum, T, Mapleback, B, Ghorbani, K and Nicholson, K 2017, 'Reducing the attenuation in CFRP waveguide using carbon fiber veil', IEEE Microwave and Wireless Components Letters, vol. 27, no. 12, pp. 1089-1091.


Document type: Journal Article
Collection: Journal Articles

Title Reducing the attenuation in CFRP waveguide using carbon fiber veil
Author(s) Rudd, M
Baum, T
Mapleback, B
Ghorbani, K
Nicholson, K
Year 2017
Journal name IEEE Microwave and Wireless Components Letters
Volume number 27
Issue number 12
Start page 1089
End page 1091
Total pages 3
Publisher IEEE
Abstract Carbon fiber reinforced polymer (CFRP) materials are anisotropic lossy conductors which restrict their use in high-performance lightweight and load-bearing waveguides. The attenuation of CFRP waveguides has been improved in this research by investigating and comparing three different manufacturing techniques. WR-90 waveguides have been manufactured from Cytec IM7/977-3 prepreg and their transmission performance was evaluated. Three different techniques were implemented to reduce waveguide losses including: copper foil lining, conductive paint, and a new integrated metalized carbon fiber veil (CFV) material. The new lightweight high conductivity CFV was integrated into the walls of a CFRP waveguide which reduced the per unit length attenuation to below 1 dB/m. This was an improvement of up to 5.5 dB over raw carbon fiber and similar to the performance of a copper foil-lined waveguide.
Subject Microwave and Millimetrewave Theory and Technology
Keyword(s) Attenuation
carbon fiber reinforced polymer (CFRP)
carbon fiber veil (CFV)
multifunctional struc- tures
pregtronics
slotted wav eguide antenna stiffened struc- ture (SWASS)
waveguides
X -band
DOI - identifier 10.1109/LMWC.2017.2762243
Copyright notice © 2017 Crown Copyright
ISSN 1531-1309
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