Custódio Peixeiro received the PhD degree in Electrical and Computer Engineering from Instituto Superior Técnico (IST), University of Lisbon (UL), in 1993. He has been a research member of Instituto de Telecomunicações (IT) since 1994. He retired in October 2023 from his role as an assistant professor at the Department of Electrical and Computer Engineering (DEEC), IST-UL (1993–2023). He maintains pro bono voluntary institutional collaboration with IST-UL and IT. In the faculty of the DEEC-IST-UL (1980–2023), he taught seventeen courses in the antenna and propagation field, namely, “Propagation and Radiation of Electromagnetic Waves” (with an average of 270 students per year) in the last ten years. He has participated actively in many European research projects and networks of excellence (MBS, FLOWS, ACE, NEWCOM, EARTH), in educational projects (ALFA, TEMPUS), and in national research projects. He was actively involved as a Portuguese national delegate in several EU antenna COST actions. He has also authored, or coauthored, eight book chapters, thirty-six journal papers, and one hundred and thirty-one conference papers. His research interests include the analysis, design, fabrication, and test of printed antennas and circuits. He has been an IEEE life member since 2023.