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Orbital Angular Momentum in Radio-A System Study
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
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2010 (English)In: IEEE Transactions on Antennas and Propagation, ISSN 0018-926X, E-ISSN 1558-2221, Vol. 58, no 2, 565-572 p.Article in journal (Refereed) Published
Abstract [en]

Recent discoveries concerning rotating (helical) phase fronts and orbital angular momentum (OAM) of laser beams are applied to radio frequencies and comprehensive simulations of a radio OAM system are performed. We find that with the use of vector field-sensing electric and magnetic triaxial antennas, it is possible to unambiguously estimate the OAM in radio beams by local measurements at a single point, assuming ideal (noiseless) conditions and that the beam axis is known. Furthermore, we show that conventional antenna pattern optimization methods can be applied to OAM-generating circular arrays to enhance their directivity.

Place, publisher, year, edition, pages
2010. Vol. 58, no 2, 565-572 p.
Keyword [en]
Directivity optimization, microwave orbital angular momentum, orbital angular momentum (OAM), radio orbital angular momentum, rotating phase fronts
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-138025DOI: 10.1109/TAP.2009.2037701ISI: 000274210700034OAI: oai:DiVA.org:uu-138025DiVA: diva2:378739
Available from: 2010-12-16 Created: 2010-12-16 Last updated: 2017-12-11Bibliographically approved

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Swedish Institute of Space Physics, Uppsala DivisionDepartment of Physics and Astronomy
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IEEE Transactions on Antennas and Propagation
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