eprintid: 324 rev_number: 7 eprint_status: archive userid: 5 dir: disk0/00/00/03/24 datestamp: 2011-03-25 lastmod: 2013-07-03 13:09:49 status_changed: 2013-07-03 13:09:49 type: techreport metadata_visibility: show item_issues_count: 0 creators_name: Lizzi, Leonardo creators_name: Viani, Federico creators_name: Azaro, Renzo creators_name: Massa, Andrea title: A PSO-Driven Spline-Based Shaping Approach for Ultra-Wideband (UWB) Antenna Synthesis ispublished: pub subjects: TU full_text_status: public keywords: Antenna synthesis , particle swarm optimizer (PSO) , spline representation , ultrawideband (UWB) abstract: Synthesis of ultrawideband (UWB) antennas by means of a particle swarm optimizer (PSO)-driven spline-based shaping approach is described. In order to devise a reliable and effective solution, such a topic is analyzed according to different perspectives: 1) representation of the antenna shape with a simple and efficient description; 2) definition of a suitable description of the UWB Tx/Rx system; 3) formulation of the synthesis problem in terms of an optimization one; 4) integration of the modelling of the UWB system into a computationally efficient minimization procedure. As a result, an innovative synthesis technique based on the PSO-based iterative evolution of suitable shape descriptors is carefully detailed. To assess the effectiveness of the proposed method, a set of representative numerical simulations are performed and the results are compared with the measurements from experimental prototypes built according to the design specifications coming from the optimization procedure. To focus on the main advantages and features of the proposed approach, comparisons with the results obtained with a standard parametric approach are reported, as well. (c) 2008 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. date: 2008-08 date_type: published institution: University of Trento department: informaticat refereed: TRUE referencetext: [1] L. Yang and G. B. Giannakis, “Ultra-wideband communications,” IEEE Signal Processing Mag., pp. 26–94, Nov. 2004. [2] US Federal Communication Commission, First Report and Order, “Revision of Part 15 of the Commission’s Rules Regarding Ultrawideband Transmission Systems,” Apr. 2002, FCC02-48 [Online]. 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Lee, “A novel cpw-fed ultra-wideband antenna design,” Microw. Opt. Technol. Lett., vol. 44, no. 5, pp. 393–396, Mar. 2005. citation: Lizzi, Leonardo and Viani, Federico and Azaro, Renzo and Massa, Andrea (2008) A PSO-Driven Spline-Based Shaping Approach for Ultra-Wideband (UWB) Antenna Synthesis. [Technical Report] document_url: http://www.eledia.org/students-reports/324/1/DISI-11-044.R152.pdf