Professor Struzak was employed at the University of Technology at Wroclaw. (All these activities were suspended for almost two years of his obligatory military service, when he was serving as a staff officer responsible for radiolocation in an anti-aircraft artillery unit of the Polish Army). At the university, he has passed through all consecutive steps of academic career starting as an Instructor (when continuing studies toward his MS degree), and then assistant professor, adjunct professor, and professor, respectively at the Chair of Microwaves and Telecommunications, the Telecommunication Institute, and finally the Institute of Electrical Metrology (until 1985, when he moved to Geneva). At the university, he was promoting a number of master-degree students, nine PhD students, and eight post-doctoral students. He was invited to participate in a number of scientific councils. In 1993, the Recteur de l’Academie de Toulouse invited him to the Institut National Polytechnique de Toulouse (France) to spend some time there as a visiting professor. He delivered lectures at all continents. Among others, he offered talks at the UK Radiocommunication Agency, Oxford University, and the USA National Telecommunication and Information Agency. He was invited to lecture at a series of international schools on digital radio and wireless networking at the International Centre for Theoretical Physics (ICTP) in Trieste, Italy. Later, he has been invited to co-direct that school series. In 2004/2005 he was with the University of Information Technology and Management (WSIZ) at Rzeszow, and since 2005 he has been again with the National Institute for Telecommunications in Poland.