eprintid: 472 rev_number: 4 eprint_status: archive userid: 5 dir: disk0/00/00/04/72 datestamp: 2011-03-25 lastmod: 2013-07-01 09:38:33 status_changed: 2013-07-01 09:38:33 type: techreport metadata_visibility: show item_issues_count: 0 creators_name: Rocca, Paolo creators_name: Manica, Luca creators_name: Poli, Lorenzo creators_name: Massa, Andrea title: Synthesis of Compromise Sum-DifferenceArrays through Time-Modulation ispublished: pub subjects: TU full_text_status: public keywords: Sum and Difference Compromise Pattern Synthesis, Monopulse Antennas, Time-Modulated Arrays abstract: In this paper, time-modulation is exploited for the synthesis of monopulse sub-arrayed antennas. The solution of the compromise sum-difference problem is obtained by setting the set of static excitations to an optimal sum set and synthesizing the “best compromise” difference pattern through a Continuous Partition Method (CPM) based approach. The array elements are aggregated into sub-arrays controlled by means of RF switches with optimized “on” time-durations. The switch-on instants of the pulse sequences are then computed by means of a particle swarm optimizer to reduce the interferences caused by the sideband radiations. A selected set of numerical results is reported to assess the potentialities of time-modulation in dealing with the synthesis problem at hand. This paper is a postprint of a paper submitted to and accepted for publication in Radar, Sonar & Navigation and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library. date: 2009-01 date_type: published institution: University of Trento department: informaticat refereed: TRUE referencetext: [1] Dolph, C. L.: ’A current distribution for broadside arrays which optimises the relationship between beam width and sidelobe level,’ Proc. IRE, 1946, 34, pp. 335-348. [2] McNamara, D. 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