eprintid: 100
rev_number: 18
eprint_status: archive
userid: 4
dir: disk0/00/00/01/00
datestamp: 2013-06-13 19:38:33
lastmod: 2013-11-04 13:12:41
status_changed: 2013-06-13 19:38:33
type: thesis
metadata_visibility: show
creators_name: Moseley, J.
title: PSO-based Failure Correction Technique for Time-Modulated Linear Arrays
ispublished: pub
subjects: TK
full_text_status: public
keywords: ACM
abstract: In the last years, time-modulated arrays have gained a growing interest since they overcome some classical drawbacks of the amplitude-weight control by arbitrarily shaping the radiated pattern by means of the modulation of the static excitations with a set of radiofrequency (RF) switches. Nevertheless, two main problems have limited the consideration of this type of array in the past: the necessity to use reliable RF switches operating at high frequency, and the generation of unwanted harmonics, the so called sideband radiation (SR), which represent a loss in term of radiated power. The new generation of RF switches thanks to the recent advance in nano-technologies are able to satisfy the operative requirements; moreover, the use of global optimization algorithms have shown that the problem of the sideband radiation can be properly handled. 
As well as any type of electronic components, RF switches are subjects to failures: in the applications where it is not possible to carry out a continuously and manually maintenance, (for example satellite applications), in the presence of possible RF switches failures it is necessary to proceed with an automatically correction. This project proposes an adaptive failure correction based on the particle swarm optimization algorithm (PSO): the objective is to keep the radiating characteristics of the antenna array (and hence the power pattern) in presence of RF switches failures as well, using the PSO algorithm to reconfigure the time-modulating functions of the still active elements composing the array.

date: 2013
date_type: published
institution: University of Trento
department: ELEDIA Research Center@DISI
thesis_type: masters
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[30]	L. Lizzi and A. Massa, "Dual-band printed fractal monopole antenna for LTE applications," IEEE Antennas Wireless Propag. Lett., vol. 10, pp. 760-763, 2011.
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[42]	L. Lizzi, G. Oliveri, and A. Massa, "A time-domain approach to the synthesis of UWB antenna systems," Progress in Electromagnetic Research, vol. 122, pp. 557-575, 2012.
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[44]	L. Lizzi, F. Viani, and A. Massa, "Dual-band spline-shaped PCB antenna for Wi-Fi applications," IEEE Antennas Wireless Propag. Lett., vol. 8, pp. 616-619, 2009.
[45]	L. Poli, P. Rocca, G. Oliveri, and A. Massa, "Adaptive nulling in time-modulated linear arrays with minimum power losses," IET Microwaves, Antennas & Propagation, vol. 5, no. 2, pp. 157-166, 2011.
[46]	P. Rocca, L. Poli, G. Oliveri, and A. Massa, "Adaptive nulling in time-varying scenarios through time-modulated linear arrays," IEEE Antennas Wireless Propag. Lett., vol. 11, pp. 101-104, 2012.
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[71]	L. Manica, P. Rocca, G. Oliveri, and A. Massa, "Designing radiating systems through interval analysis tools," IEEE International Symposium on Antennas Propag. (APS/URSI 2013), Orlando, Florida, USA, Jul. 7-12, 2013 (accepted).
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[85]	P. Rocca, R. L. Haupt, and A. Massa, "Interference suppression in uniform linear array through a dynamic thinning strategy," IEEE Trans. Antennas Propag., vol. 59, no. 12, pp. 4525-4533, Dec. 2011.
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[90]	G. Oliveri, F. Caramanica, M. D. Migliore, and A. Massa, "Synthesis of non-uniform MIMO arrays through combinatorial sets," IEEE Antennas Wireless Propag. Lett., vol. 11, pp. 728-731, 2012.
[91]	G. Oliveri, L. Lizzi, F. Robol, and A. Massa, "Polarization-agile ADS-interleaved planar arrays‚" PIER, in press, 2013.

citation:   Moseley, J.  (2013) PSO-based Failure Correction Technique for Time-Modulated Linear Arrays.  Masters thesis, University of Trento.   
document_url: http://www.eledia.org/students-reports/100/1/Abstract.A284.pdf