Spirapole antenna for communication systems utilizing both satellite and terrestrial assets

In this paper an antenna is presented that satisfies the two-fold radiation pattern requirement of communication systems utilizing both geostationary satellites and terrestrial transponders for coverage of mobile terminal away from the equator. A typical requirement for such a system is a low profil...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2005-02, Vol.53 (2), p.866-869
Main Authors: Colburn, J.S., Lynch, J.J., Obatoyinbo, A., Talty, T.
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Antennas
Applied sciences
Arm
Artificial satellites
Dielectrics
Direct broadcast satellite
dual pattern antenna
Exact sciences and technology
Loaded antennas
Polarization
Radiocommunications
Satellite antennas
Satellite broadcasting
Satellite telecommunications. Space telecommunications
spiral
Spirals
Telecommunications
Telecommunications and information theory
top loaded monopole
Transmitting antennas
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Summary:In this paper an antenna is presented that satisfies the two-fold radiation pattern requirement of communication systems utilizing both geostationary satellites and terrestrial transponders for coverage of mobile terminal away from the equator. A typical requirement for such a system is a low profile antenna that maximizes left-hand circularly polarized radiation in the satellite viewing angle, from 30/spl deg/ to 70/spl deg/ from zenith, and vertically polarized radiation in the terrestrial station viewing angle, from 70/spl deg/ to 90/spl deg/ from zenith. This dual radiation pattern coverage is achieved by integrating a small four arm spiral with a top loaded monopole into a single compact volume, an antenna termed a spirapole.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2004.841270