eprintid: 510
rev_number: 7
eprint_status: archive
userid: 5
dir: disk0/00/00/05/10
datestamp: 2011-08-04
lastmod: 2013-06-30 08:54:01
status_changed: 2013-06-30 08:54:01
type: techreport
metadata_visibility: show
item_issues_count: 0
creators_name: Poli, Lorenzo
creators_name: Rocca, Paolo
creators_name: Massa, Andrea
title: Beam Pattern Optimization in Time-Modulated Linear Arrays
ispublished: pub
subjects: TU
full_text_status: public
abstract: Time-modulated arrays exploit time as an additional degree of freedom [1] where a set of radio-frequency (RF) switches are used to modulate the static excitations to arbitrarily shape the radiation pattern. Firstly, time-modulation has been considered for the synthesis of radar array to obtain low and ultra-low sidelobe patterns [2]. Unfortunately, the periodic on-off of the RF switches causes the generations of undesired radiations, the so-called sideband radiation (SR) [3], which represents a loss of the radiated power. Such a drawback has limited the use of time-modulated array in real world applications. This is the author's version of the final version available at IEEE.
date: 2011-01
date_type: published
institution: University of Trento
department: informaticat
refereed: FALSE
referencetext: [1] H. E. Shanks and R. W. Bickmore, "Four-dimensional electromagnetic radiators", Canad. J. Phys., vol. 37, pp. 263-275, Mar. 1959. [2] W. H. Kummer, A. T. Villeneuve, T. S. Fong , and F. G. Terrio, "Ultra-low sidelobes from time-modulated arrays", IEEE Trans. Antennas Propag., vol. 11, no. 6, pp. 633-639, Nov. 1963. [3] J. C. Bregains, J. Fondevila, G. Franceschetti, and F. Ares, "Signal radiation and power losses of time-modulated arrays", IEEE Trans. Antennas Propag., vol. 56, no. 6, pp. 1799-1804, Jun. 2008. [4] S. Yang, Y. B. Gan, and A. Qing, "Sideband suppression in time-modulated linear arrays by the differential evolution algorithm, IEEE Antennas Wireless Propag. Lett., vol. 1, pp. 173-175, 2002. [5] J. Fondevila, J. C. Bregains, F. Ares, and E. Moreno, "Optimizing uniformly excited linear arrays through time modulation", IEEE Antennas Wireless Propag. Lett., vol. 3, pp. 298-301, 2004. [6] S. Yang, Y. B.Gan, A. Qing, and P. K. Tan, "Design of a uniform amplitude time modulated linear array with optimized time sequences," IEEE Trans. Antennas Propag., vol. 53, no. 7, pp. 2337-2339, Jul. 2005. [7] L. Manica, P. Rocca, L. Poli, and A. Massa, "Almost time-independent performance in time-modulated linear arrays", IEEE Antennas Wireless Propag. Lett., vol. 8, pp. 843-846, 2009.
citation:   Poli, Lorenzo and Rocca, Paolo and Massa, Andrea  (2011) Beam Pattern Optimization in Time-Modulated Linear Arrays.  [Technical Report]     
document_url: http://www.eledia.org/students-reports/510/1/DISI-11-158.C209.pdf