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Article Dans Une Revue Radio Science Année : 2015

Antenna Gain and Link Budget for Waves Carrying Orbital Angular Momentum (OAM)

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Résumé

This paper addresses the RF link budget of a communication system using unusual waves carrying an orbital angular momentum (OAM) in order to clearly analyse the fundamental changes for telecommunication applications. The study is based on a typical configuration using circular array antennas to transmit and receive OAM waves. For any value of the OAM mode order, an original asymptotic formulation of the link budget is proposed in which equivalent antenna gains and free-space losses appear. The formulations are then validated with the results of a commercial electromagnetic simulation software. By this way, we also show how our formula can help to design a system capable of superimposing several channels on the same bandwidth and the same polarisation, based on the orthogonality of the OAM. Additional losses due to the use of this degree of freedom are notably clearly calculated to quantify the benefit and drawback according to the case.

Dates et versions

hal-01146554 , version 1 (28-04-2015)

Identifiants

Citer

Duy Kevin Nguyen, Olivier Pascal, Jérôme Sokoloff, Alexandre Chabory, Baptiste Palacin, et al.. Antenna Gain and Link Budget for Waves Carrying Orbital Angular Momentum (OAM). Radio Science, 2015, Volume 50 (11), pp.Pages 1165-1175. ⟨10.1002/2015RS005772⟩. ⟨hal-01146554⟩
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