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Deployable Quadrifilar Helical Antennas for Various Frequency Bands
Quadrifilar Helical Antennas (QHAs) are very appropriate for Low Earth Orbiting small satellites because they offer
better useable footprints on Earth than simple monopole antennas. A comparison between a monopole and a
Quadrifilar Helical Antenna will be presented. Results of a recent project will be presented. Measured antenna
performance provided good correlation with the simulations. Simulations have been performed for satellite
frequency ranges from 350 MHz to about 3 GHz. Simulations are based on deployable antennas suitable for
occupying about one third to one half of a 1 U size structure. There is good confidence that the simulations to be
presented can be developed into useable QHAs.
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