Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/117878
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Type: Journal article
Title: The impact of reduced conductivity on the performance of wire antennas
Author: Shahpari, M.
Thiel, D.
Citation: IEEE Transactions on Antennas and Propagation, 2015; 63(11):4686-4692
Publisher: IEEE
Issue Date: 2015
ISSN: 0018-926X
1558-2221
Statement of
Responsibility: 
Morteza Shahpari and David V. Thiel
Abstract: The impact of reduced conductivity on the performance of wire antennas Low cost methods of antenna production primarily aim to reduce the cost of metalization. This might lead to a reduction in conductivity. A systematic study on the impact of conductivity is presented. The efficiency, gain, and bandwidth of cylindrical wire meander line, dipole, and Yagi-Uda antennas were compared for materials with conductivities in the range 10³- 10⁹ S/m. In this range, the absorption efficiency of both the dipole and meander line changed little; however, the conductivity significantly impacts on radiation efficiency and the absorption cross section of the antennas. The extinction cross section of the dipole and meander line antennas (antennas that Thevenin equivalent circuit is applicable) also vary with radiation efficiency. From the point of radiation efficiency, the dipole antenna performance is most robust under decreasing conductivity. Antennas studied in this study were fabricated with brass and graphite. Radiation efficiency of the antennas was measured by improved Wheeler cap (IWC) method. Measurement results showed a reasonable agreement with simulations. We also measured the extinction cross section of the six fabricated prototypes.
Keywords: Absorption cross section; absorption efficiency; conductivity; extinction cross section; power to volume ratio; radiation efficiency; receiving antenna
Rights: © 2015 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.
DOI: 10.1109/TAP.2015.2479241
Grant ID: http://purl.org/au-research/grants/arc/DP130102098
Published version: http://dx.doi.org/10.1109/TAP.2015.2479241
Appears in Collections:Aurora harvest 3
Electrical and Electronic Engineering publications

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