Design of a Printed Quadrifilar-Helical Antenna on a Dielectric Cylinder by Means of a Genetic Algorithm [Antenna Applications Corner]

This paper presents the application of a genetic algorithm (GA) to the optimization of an S-band quadrifilar-helical antenna, which is printed on a dielectric cylinder. This antenna was designed for LEO satellite applications. Its saddle-shaped pattern should compensate for free-space loss variation...

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Bibliographic Details
Published in:IEEE antennas & propagation magazine 2011-08, Vol.53 (4), p.262-268
Main Author: Moghaddam, Elham Sharifi
Format: Magazinearticle
Language:English
Subjects:
Analytical models
Antenna radiation patterns
circular polarization
conductor core
conformal antennas
Conformal mapping
cylindrical antennas
dielectric cylinder
Dielectric devices
genetic algorithm (GA)
Genetic algorithms
Helical antennas
LEO satellite
Polarization
quadrifilar helical antenna (QHA)
saddle-shaped pattern
satellite antennas
Satellite communication
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Summary:This paper presents the application of a genetic algorithm (GA) to the optimization of an S-band quadrifilar-helical antenna, which is printed on a dielectric cylinder. This antenna was designed for LEO satellite applications. Its saddle-shaped pattern should compensate for free-space loss variations in the satellite's footprint. The steady-state genetic algorithm was used for this optimization and an elitist strategy was implemented. The selection strategy in the present genetic algorithm was proportionate selection.
ISSN:1045-9243
1558-4143
DOI:10.1109/MAP.2011.6097348