TY - GEN
T1 - Evaluation of GAM-radio mode detection using the phase gradient method
AU - Drysdale, Timothy D.
AU - Allen, Ben
AU - Cano, Eduardo
AU - Bai, Qiang
AU - Tennant, Alan
N1 - Acceptance date set to exclude from REF OA Policy
PY - 2017/5/15
Y1 - 2017/5/15
N2 - 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.
AB - 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.
KW - antenna arrays
KW - measurement
KW - orbital angular momentum
KW - simulation
UR - http://www.scopus.com/inward/record.url?scp=85020224636&partnerID=8YFLogxK
U2 - 10.23919/EuCAP.2017.7928341
DO - 10.23919/EuCAP.2017.7928341
M3 - Conference contribution
AN - SCOPUS:85020224636
T3 - 2017 11th European Conference on Antennas and Propagation, EUCAP 2017
SP - 3606
EP - 3610
BT - 2017 11th European Conference on Antennas and Propagation, EUCAP 2017
PB - Institute of Electrical and Electronics Engineers
T2 - 11th European Conference on Antennas and Propagation, EUCAP 2017
Y2 - 19 March 2017 through 24 March 2017
ER -