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Measurements and analysis of a helical antenna printed on a layered dielectric hemisphere

Khamas, S.K. and Latef, T.A. (2011) Measurements and analysis of a helical antenna printed on a layered dielectric hemisphere. IEEE Transactions on Antennas and Propagation, 59 (12). pp. 4831-4835. ISSN 0018-926X

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Radiation characteristics of a helical wire that is printed on the surface of a dielectric hemisphere have been studied theoretically and experimentally. Rigorous analyses have been performed using the method of moments (MoM). As expected, the dielectric hemisphere reduces the antenna's operating frequency and bandwidth. Furthermore, it has improved the 3 dB circular polarization beamwidth considerably. Hemispherical structures that consist of one, or two, dielectric layers have been considered. The experimental and computed results are in close agreement with each other.

Item Type: Article
Keywords: Dyadic Green's function , helical antennas , moment method , spherical antennas
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 14 Dec 2011 09:19
Last Modified: 14 Dec 2011 09:19
Published Version: http://dx.doi.org/10.1109/TAP.2011.2165491
Status: Published
Publisher: Institute of Electrical and Electronics Engineers
Identification Number: 10.1109/TAP.2011.2165491
URI: http://eprints.whiterose.ac.uk/id/eprint/43509

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