CETME
From 1974 to 2007 his research activities on electrical engineering subjects were conducted under the sponsorship of the CETME - Centro de Electrotecnia Teórica e Medidas Eléctricas of the Instituto Superior Técnico (Technical University of Lisbon).
(Link: http://groups.ist.utl.pt/cetme)
There, not only he prepared his doctoral thesis, but also devoted his time and effort to research activities focused on multiconductor transmission-line structures, as well as on applied optics. As a result, he published 62 papers in peer-reviewed journals, and 30 conference papers.