@inproceedings{3fc4d22dfe094f8e899dae9d9da65b1e,
title = "Evaluation of GAM-radio mode detection using the phase gradient method",
abstract = "In this paper the detection of Orbital Angular Momentum (OAM) modes at a carrier frequency of 10 GHz is evaluated by modelling and by experimentation. A 2-element antenna array together with the phase gradient detection method are used to determine whether a mode 0 or -1 is present, where our results verify that a distinct difference in measured phase profile between the two modes is distinguishable even in the presence of a multipath reflection. The measured influence of the multipath reflection is shown to agree well with modelling results. Our model combines full-wave simulations of transmit and receive antennas with a ray tracing model, revealing the respective influence of the direct and reflected multipath components of the signal. Consequently, our work shows novel insights confirming the behaviour of an OAM radio signal with a dominant reflected component and subsequent performance of the detector through experimentation.",
keywords = "antenna arrays, measurement, orbital angular momentum, simulation",
author = "Drysdale, \{Timothy D.\} and Ben Allen and Eduardo Cano and Qiang Bai and Alan Tennant",
note = "Acceptance date set to exclude from REF OA Policy; 11th European Conference on Antennas and Propagation, EUCAP 2017 ; Conference date: 19-03-2017 Through 24-03-2017",
year = "2017",
month = may,
day = "15",
doi = "10.23919/EuCAP.2017.7928341",
language = "English",
series = "2017 11th European Conference on Antennas and Propagation, EUCAP 2017",
publisher = "Institute of Electrical and Electronics Engineers",
pages = "3606--3610",
booktitle = "2017 11th European Conference on Antennas and Propagation, EUCAP 2017",
address = "United States",
}