Ernesto Limiti

Ernesto Limiti (Senior Member, IEEE) has been a Full Professor of Electronics with the Engineering Faculty, University of Roma Tor Vergata, since 2002, after being a research and teaching assistant, since 1991, and an Associate Professor, since 1998. He represents the University of Roma Tor Vergata in the governing body of the Microwave Engineering Center for Space Applications (MECSA), an inter-university center among several Italian Universities. He has been elected to represent the Industrial Engineering sector in the Academic Senate of the University, from 2007 to 2010 and from 2010 to 2013. He is the President of the Consortium “Advanced Research and Engineering for Space,” ARES, formed between the University and two companies. Further, he is the President of the Laurea and Laurea Magistrale degrees in Electronic Engineering of the University of Roma “Tor Vergata.” His research activity is focused on three main lines, all of them belonging to the microwave and millimeter-wave electronics research area. The first one is related to the characterization and modeling of active and passive microwave and millimeter-wave devices. Regarding active devices, the research line is oriented to small-signal, noise, and large-signal modeling. Regarding passive devices, equivalent-circuit models have been developed for interacting discontinuities in microstrip, for typical MMIC passive components (MIM capacitors), and for waveguide/coplanar waveguide transitions analysis and design. For active devices, new methodologies have been developed for the noise characterization and the subsequent modeling, and equivalent-circuit modeling strategies have been implemented both for small and large-signal operating regimes for GaAs, GaN, SiC, Si, and InP MESFET/HEMT devices. The second line is related to design methodologies and characterization methods for low-noise circuits. The focus is on cryogenic amplifiers and devices. Collaborations are currently ongoing with the major radio astronomy institutes all around Europe within the frame of FP6 and FP7 programs (RadioNet). Finally, the third line is in the analysis methods for nonlinear microwave circuits. In this line, novel analysis methods (Spectral Balance) are developed, together with the stability analysis of the solutions making use of traditional (harmonic balance) approaches. The above research lines have produced more than 250 publications in refereed international journals and presentations at international conferences. He acts as a referee of international journals of the microwave and millimeter wave electronics sector and is on the steering committee of international conferences and workshops. He is actively involved in research activities with many research groups, both European and Italian. He is in tight collaborations with high-tech Italian (Selex-SI, Thales Alenia Space, Rheinmetall, Elettronica S.p.A., and Space Engineering) and foreign (OMMIC, Siemens, and UMS) companies. He contributed, as a researcher and/or as the unit responsible, to several National (PRIN MIUR, Madess CNR, and Agenzia Spaziale Italiana) and international (ESPRIT COSMIC, Manpower, Edge, Special Action MEPI, ESA, EUROPA, Korrigan, RadioNet FP6, and FP7) projects. Regarding teaching activities, he teaches, over his institutional duties in the frame of the Corso di Laurea Magistrale in Ingegneria Elettronica, “Elettronica per lo Spazio” within the Master Course in Sistemi Avanzati di Comunicazione e Navigazione Satellitare. He is a member of the committee of the Ph.D. program in Telecommunications and Microelectronics with the University of Roma Tor Vergata, tutoring an average of four Ph.D. candidates per year.