10.5061/DRYAD.44J0ZPCCC
Allen, Ben
0000-0002-6308-8383
University of Oxford
Data from: Experimental evaluation of spectral efficiency from a circular
array antenna producing a Laguerre-Gauss mode
Dryad
dataset
2020
Royal Society
https://ror.org/03wnrjx87
IF160001
2020-12-14T00:00:00Z
2020-12-14T00:00:00Z
en
8987878 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
We present the 4D volumetric electromagnetic field measurements (x, y, z
and frequency) of the complex radiated field produced by an 8-element
circular antenna array. The array is designed to produce a Laguerre-Gauss
(LG) mode l = -1 over the frequency range of 9 - 10 GHz. We evaluate our
findings in terms of far-field LG mode purity and spectral efficiency in
terms of the QAM modulation scheme that can be supported. The application
of LG modes in radio systems is as a means of multiplexing several data
streams onto the same frequency, polarisation and time slot, thus making
highly spectrally efficient transmission system or enhancing radar systems
by means of exploiting mode behaviour as an additional degree of freedom.
Our results show that for the circular antenna array, we find that mode
purity allows BPSK or QPSK modulation over a 0.3GHz bandwidth. Closer to
the antennas’ design frequency, 256QAM modulation may be used over a 0.05
GHz band. We anticipate the practical insights provided in this paper to
contribute to the successful design of such systems.
This is a ZIP file containing measured field data relating to the OAM
array. It is measured as a grid in X, Y and Z coordinates. Each data file
is a CSV files containing date for that location.