eprintid: 615 rev_number: 7 eprint_status: archive userid: 4 dir: disk0/00/00/06/15 datestamp: 2014-05-07 08:34:22 lastmod: 2014-05-07 08:34:22 status_changed: 2014-05-07 08:34:22 type: thesis metadata_visibility: show creators_name: Dalle Molle, F. title: VERIFICA: Performances analysis of a PSO-based optimization procedure for the synthesis of directive time-modulated planar arrays with minimum power losses ispublished: pub subjects: TK full_text_status: public keywords: ACM abstract: In the recent years, TMAAs have been studied by a new perspective in which part of the sideband radiation is exploited for useful purposes. In particular, the possibility to consider the switch-on instants added to the switch-on times as a new degree of freedom in the synthesis process allows to better control the harmonics radiated patterns, and hence to synthesize patterns at the central frequency and at the harmonic frequencies, as well. This project proposes an harmonic beam-forming synthesis technique based on the particle swarm optimizer (PSO) algorithm: multiple patterns are generated at the central and harmonic frequencies, realizing a multi-frequencies beam patterns with a single antenna array in order to simultaneously receive multiple signal from different direction. The pulse splitting technique is applied, in order to better control the power associated to the harmonic frequencies. date: 2014 date_type: published institution: University of Trento department: ELEDIA Research Center@DISI thesis_type: masters referencetext: [1] E. T. Bekele, L. Poli, M. D'Urso, P. Rocca, and A. Massa, "Pulse-shaping strategy for time modulated arrays - Analysis and design," IEEE Trans. Antennas Propag., vol. 61, no. 7, pp. 3525-3537, July 2013. [2] P. Rocca, L. Poli, G. Oliveri, and A. Massa, "A multi-stage approach for the synthesis of sub-arrayed time modulated linear arrays," IEEE Trans. Antennas Propag., vol. 59, no. 9, pp. 3246-3254, Sep. 2011. [3] L. Poli, P. Rocca, G. Oliveri, and A. Massa, "Harmonic beamforming in time-modulated linear arrays," IEEE Trans. Antennas Propag., vol. 59, no. 7, pp. 2538-2545, Jul. 2011. [4] 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. [5] L. Poli, P. Rocca, and A. Massa, "Sideband radiation reduction exploiting pattern multiplication in directive time-modulated linear arrays," IET Microwaves, Antennas & Propagation, vol. 6, no. 2, pp. 214-222, 2012. [6] L. Poli, P. Rocca, L. Manica, and A. Massa, "Time modulated planar arrays - Analysis and optimization of the sideband radiations," IET Microwaves, Antennas & Propagation, vol. 4, no. 9, pp. 1165-1171, 2010. [7] L. Poli, P. Rocca, L. Manica, and A. Massa, "Pattern synthesis in time-modulated linear arrays through pulse shifting," IET Microwaves, Antennas & Propagation, vol. 4, no. 9, pp. 1157-1164, 2010. [8] P. Rocca, L. Poli, G. Oliveri, and A. Massa, "Synthesis of time-modulated planar arrays with controlled harmonic radiations," Journal of Electromagnetic Waves and Applications, vol. 24, no. 5/6, pp. 827-838, 2010. [9] P. Rocca, M. Benedetti, M. Donelli, D. Franceschini, and A. Massa, "Evolutionary optimization as applied to inverse problems," Inverse Problems - 25 th Year Special Issue of Inverse Problems, Invited Topical Review, vol. 25, pp. 1-41, Dec. 2009. [10] P. Rocca, G. Oliveri, and A. Massa, "Differential Evolution as applied to electromagnetics," IEEE Antennas Propag. Mag., vol. 53, no. 1, pp. 38-49, Feb. 2011. citation: Dalle Molle, F. (2014) VERIFICA: Performances analysis of a PSO-based optimization procedure for the synthesis of directive time-modulated planar arrays with minimum power losses. Masters thesis, University of Trento. document_url: http://www.eledia.org/students-reports/615/1/Abstract.A455.pdf