September 16, 2022
Colloquium Topic: Design Aspects of Multifunction Phased Array Radars and Future Research Directions
The fast evolution of RF technology enables the development of new creative phased arrays architectures that offer unprecedented performance for communication, remote sensing, and weather observation. Fast volumetric scanning updates (< 20 secs), and wide-scanning (90 to 170 deg.) with ultra-low cross-polarization isolation (< 40 dB) are some of the main features of new phased array architectures. An overview of current and new trends in phased-array architectures and technology for multifunction, reconfigurable, shared-apertures, multiband, and ultra-wideband arrays and radar systems, focusing on scanning performance including mmWave technology will be presented.
Colloquium Speaker: Jorge Salazar-Cerreño
Jorge L. Salazar-Cerreño received a B.S. In ECE from the University Antenor Orrego, Trujillo, Peru, and an M.S. degree in ECE from the University of Puerto Rico, Mayaguez (UPRM). In 2011, he received his Ph.D. degree in ECE from the University of Massachusetts, Amherst. His Ph.D. research focused on development of low-cost dual-polarized active phased array antennas (APAA) for the Engineering Research Center for Collaborative Adaptive Sensing of the Atmosphere (CASA). After graduation, Dr. Salazar-Cerreño was awarded a prestigious National Center for Atmospheric Research (NCAR) Advanced Study Program (ASP) postdoctoral fellowship. At NCAR, he worked at the Earth Observing Laboratory (EOL) division developing airborne technology for two-dimensional, electronically scanned, dual-pol phased array radars for atmospheric research. This is a critical tool for studying weather and related hazards, especially for retrieving dynamic and microphysical characteristics of clouds and precipitation over rugged terrain or the open ocean, where other radar systems can have major limitations. In July 2014, he joined the Advanced Radar Research Center (ARRC) at The University of Oklahoma as a research scientist, and became an associate professor at the School of Electrical and Computer Engineering in August 2021. His research interests include high-performance, broadband antennas for dual-polarized phased array radar applications; array antenna architecture for reconfigurable radar systems; APAA; Tx/Rx modules; radome EM modeling; and RF and hardware development for characterizing and calibrating APAA and millimeter-wave antennas. In 2019, Dr. Salazar was awarded a William H. Barkow Presidential Professorship. Presidential Professors inspire their students, mentor their undergraduate and graduate students in the process of research and creative scholarly activity within their discipline, and exemplify to their students and their colleagues the ideals of a scholar through their endeavors in teaching; research and creative scholarly activity; and professional and university service and public outreach. Dr. Salazar is a senior member of the IEEE and currently serves as a reviewer for IEEE Transactions on Antennas and Propagation (TAP), IET Microwaves, Antennas and Propagation (IET), the Journal of Atmospheric and Oceanic Technology (JTECH), IEEE Transactions on Geoscience and Remote Sensing (TGARS), John Wiley and Sons, and the Radio Science Journal. https://www.ou-arrc-paard.com/