eprintid: 460 rev_number: 6 eprint_status: archive userid: 5 dir: disk0/00/00/04/60 datestamp: 2011-04-22 lastmod: 2013-07-01 13:16:47 status_changed: 2013-07-01 13:16:47 type: techreport metadata_visibility: show item_issues_count: 0 creators_name: Poli, Lorenzo creators_name: Rocca, Paolo creators_name: Manica, Luca creators_name: Massa, Andrea title: Time modulated planar arrays: Analysis and optimization of the sideband radiations ispublished: pub subjects: TU full_text_status: public keywords: array time modulation control , closed-form expression , particle swarm optimiser , power losses minimisation , pulse sequences , sideband radiation optimisation , time-modulated planar array abstract: In this study, the minimisation of the power losses because of undesired sideband radiations in time-modulated planar arrays is dealt with. A closed-form expression for evaluating the total power wasted in the sideband radiations is obtained and exploited to design a new procedure based on a particle swarm optimiser for the synthesis of the pulse sequences devoted to control the array time modulation. A set of representative results is reported and analysed to assess the effectiveness of the proposed approach. "This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves, Antennas & Propagation and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library". date: 2011-01 date_type: published institution: University of Trento department: informaticat refereed: TRUE referencetext: [1] Shanks, H. E., and Bickmore, R. W.: ’Four-dimensional electromagnetic radiators’, Canad. J. Phys., 1959, 37, pp. 263-275. [2] Kummer, W. H., Villeneuve, A. T., Fong, T. S., and Terrio, F. 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