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For this purpose a set of multi\u2010resonant annular\u2010ring patch antennas are pixel\u2010wise described inside an electromagnetic simulator to provide the \u2018population\u2019 of individuals among which the genetic tool is able to select the most adapted one with respect to the design specifications. The further use of circuit\u2010level non\u2010linear simulation tool, based on Harmonic balance technique, allows the rigorous multi\u2010band design of the whole rectenna system in RF stationary conditions at several received power levels. The result is a novel compact, lightweight and highly efficient tetra\u2010band rectenna, able to harvest RF energy from GSM 900, GSM 1800, UMTS and WiFi sources available in the ambient. At these frequency bands high radiation efficiency is desired as an essential prerequisite for optimally handling very low\u2010power densities. Very good agreement with measurements of both the radiating and rectifying designs is demonstrated in real office scenarios. Finally the rectenna is connected to a power management unit and the resulting assembly is tested in terms of stored energy while harvesting from a mobile cell\u2010phone call.<\/jats:p>","DOI":"10.1049\/iet-map.2013.0056","type":"journal-article","created":{"date-parts":[[2013,11,29]],"date-time":"2013-11-29T01:14:49Z","timestamp":1385687689000},"page":"1254-1263","source":"Crossref","is-referenced-by-count":100,"title":["Genetic\u2010based design of a tetra\u2010band high\u2010efficiency radio\u2010frequency energy harvesting system"],"prefix":"10.1049","volume":"7","author":[{"given":"Diego","family":"Masotti","sequence":"first","affiliation":[{"name":"DEI University of Bologna Viale Risorgimento 2 40136 Bologna Italy"}]},{"given":"Alessandra","family":"Costanzo","sequence":"additional","affiliation":[{"name":"DEI Cesena Campus \u2013 University of Bologna Via Venezia 52 47521 Cesena Italy"}]},{"given":"Massimo","family":"Del Prete","sequence":"additional","affiliation":[{"name":"DEI Cesena Campus \u2013 University of Bologna Via Venezia 52 47521 Cesena Italy"}]},{"given":"Vittorio","family":"Rizzoli","sequence":"additional","affiliation":[{"name":"DEI University of Bologna Viale Risorgimento 2 40136 Bologna Italy"}]}],"member":"265","published-online":{"date-parts":[[2013,12]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2004.823585"},{"key":"e_1_2_6_3_2","doi-asserted-by":"crossref","unstructured":"Costanzo A. 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