Stanisław Rosłoniec was born on June 25, 1948, in Ostaszewo, Poland. He received his M.Sc. degree (in electronic engineering) from Warsaw University of Technology in 1972. After graduation, he joined the Department of Electronics (Institute of Radioelectronics) of Warsaw University of Technology where in 1976, he was granted with distinction his doctor’s degree (Ph.D). He received the higher doctor’s degree (Dr Sc.) in 1991 also from Warsaw University of Technology. Finally, he obtained the degree of professor of technical sciences from the President of the Republic of Poland in 2001. Since 1992, he is closely cooperating with the Telecommunications Research Institute (PIT), Poland. Therefore, his didactic and research interests are mainly focused on relevant for practice problems of microwave and antenna techniques, especially on the design methods of various passive microwave devices and high-directivity radar antennas. Several array antennas designed by him operate in long-range surveillance radars of type TRD-12, RST-12M, CAR-1100 and TRS-15 fabricated by PIT for the Polish Army and foreign contractors. Stanisław Rosłoniec is the author over 80 reviewed scientific papers, 25 technical reports, 3 patents, and 10 books. A list of mentioned books includes 4 academic handbooks and 6 monographs. Two of them, viz. “Algorithms for computer-aided design of linear microwave circuits” (1990) and “Fundamental numerical methods for electrical engineering” (2008) have been published by top internationally recognized publishers, respectively, by Artech House Inc., USA, and Springer Verlag, Germany. The latest of his book entitled “Some design problems of contemporary antenna technique” (in Polish) has been published in 2022 by Publishing House of the Military University of Technology, Warsaw. He is a senior member of the Microwave Theory and Techniques Society (IEEE/MTT-S).