José R. Montejo-Garai was born in Vitoria-Gasteiz, Spain, in 1965. He received the Ingeniero de Telecomunicación degree and the Ph.D. degree from the Universidad Politécnica de Madrid, Madrid, Spain, in 1990and 1994, respectively. Since 1989, he has been with the Grupo de ElectromagnetismoAplicado, Universidad Politécnica de Madrid, as an Assistant Professor until 1996, as an Associate Professor until 2017, where he is currently Full Professor. His current research interests include the analysis and characterization of wave-guide structures, advanced synthesis theory and computer aided design for microwave and millimeter-wave passive devices: filters, multiplexers, orthomodetransducers, and beam forming networks. He has designed a plenty of passive microwave devices for communication satellites.