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Phased Array Antenna
Research & Development Group (PAARD)
Advanced Radar Research Center
3190 Monitor Ave.
Norman OK 73019
Team
RESEARCH TEAM
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The Phased Array Antenna Research and Development Group (PAARD) is housed at the Advanced Radar Research Center (ARRC) and in the College of Electrical and Computer Engineering of the University of Oklahoma. PAARD's research specializes in active phased array antenna design and radar calibration.
Dr. Jorge Salazar
Dr. Jorge L. Salazar-Cerreno
Advanced Radar Research Center (ARRC)
The University of Oklahoma, Norman
3190 Monitor Av. Norman Oklahoma, 73072 RIL-110
Off: (405) 325-6499, Cell: (405) 922-7848
Jorge L. Salazar-Cerreño received a B.S. in ECE from the University Antenor Orrego, Trujillo, Peru, in 1994. He received an M.S. degree in ECE from the University of Puerto Rico, Mayaguez (UPRM) in 2002. In 2011, he received his Ph.D. degree in ECE from the University of Massachusetts, Amherst. His Ph.D. research focused on the development of a 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 state-of-the-art airborne radar 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. He 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; RF and hardware development for characterizing and calibrating APAA and millimeter-wave antennas. In 2019, Dr. Salazar was awarded the 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 recipient of the 2022 OU Outstanding Faculty Award of the year, 2021-2022 OU Annual Award for Excellence in Research Grants. Also awarded with the First Paper Award on Antenna Measurements and Applications in 2021.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/.
Summary
40
Total
3
Postdocs
21
Alumni
PhD: 8
MS: 13
5
Graduate (Current)
PhD: 5
MS: 0
11
Undergraduate / Intern
Brian Stade
Undergraduate Student
Josue Guzman Alcas
Undergraduate Student
Caleb Nelson
Undergraduate Student
Postdoc Section
Research Associate and Postdoc
Nafati Aboserwal
Research Associate and NF/FF Chamber Manager
(Jan. 2015 - Dec. 2021)
Nafati A. Aboserwal (S’13–M’16) received the B.S. degree in electrical engineering from Al-Mergheb University, Alkhoms, Libya, in 2002, and the M.S. and Ph.D. degrees in electrical engineering from Arizona State University, Tempe, AZ, USA, in 2012 and 2014, respectively. In 2015, he joined the Advanced Radar Research Center and the Department of Electrical and Computer Engineering, The University of Oklahoma, Norman, OK, USA, as a Post-Doctoral Research Scientist and then as an Anechoic Chamber Manager. Dr. Aboserwal is senior engineer at EPIRUS Inc. working in the development of new antennas for direct high power phased array antenna systems. His projects and research of interest includes computational electromagnetics, edge diffraction and discontinuities impact on the element and array performance, higher modes and surface waves characteristics of printed antennas, high performance dual-pol microstrip antenna elements with low cross-polarization and high isolation, aperture antenna characteristics, reflect array antennas and parabolic reflector antennas, ground reflections effect, active high performance phased array antennas for weather radars, S-, X- & W-band Radome analysis and design and Millimeter wave antenna.
Position:
Sr. Principal Antenna Engineer
Institution:
EPIRUS Inc.
Zeeshan Qamar
Senior Research Associate
(Nov. 2025 - Present)
Dr. Zeeshan Qamar received his B.Sc. and M.Sc. degrees in Electrical Engineering from COMSATS Institute of Information Technology (CIIT), Islamabad, Pakistan, in 2010 and 2013, respectively. He earned his Ph.D. in Electronic Engineering from City University of Hong Kong in 2017. From 2010 to 2013, Dr. Qamar worked as a Research Associate in the Department of Electrical Engineering at CIIT, where he was later promoted to Lecturer. In 2017–2018, he served as a Posdoctoral Research Associate in the Department of Materials Science and Engineering at City University of Hong Kong. In 2018, he joined the Advanced Radar Research Center at the University of Oklahoma as a Postdoctoral Research Fellow, a position he held until 2021. From 2021 to 2025, he worked as a Senior Antenna Design Engineer at ANDREW, an Amphenol company. He is currently a Senior Research Associate at the Advanced Radar Research Center. His research interests include microwave and millimeter-wave circuits, metamaterials, material characterization, radome testing, antenna design, massive MIMO, and antenna arrays.
Position:
Senior Research Scientist
Institution:
Advanced Radar Research Center (ARRC)
Sunanda Roy
Postdoctoral Research Scientist
(Sept. 2024 - Sept. 2025)
Sunanda Roy received his B.Sc. Engineering degree in Electronics and Communication Engineering (ECE) from Khulna University (KU), Khulna, Bangladesh, in 2011, and his M.Sc. Engineering degree in Electrical and Electronic Engineering (EEE) from Khulna University of Engineering and Technology (KUET) in 2016. He earned his Ph.D. in Electrical Engineering from Multimedia University (MMU), Cyberjaya, Selangor, Malaysia, in 2023. In 2024, he joined the Advanced Radar Research Center (ARRC) and the Department of Electrical and Computer Engineering at the University of Oklahoma, Norman, OK, USA, as a Postdoctoral Research Scientist. His research interests lie in applied electromagnetics, with a particular focus on the design and analysis of ultra-wideband (UWB) metallic phased array antennas and beamformers, emphasizing beam steering performance in large, integrated antenna arrays. He also works on material characterization using the cavity perturbation method, and the development of Ka-and Ku-band antenna arrays. His work further extends to high-performance dual-polarized microstrip antenna elements with low cross-polarization and high isolation, as well as aperture antenna design and characterization. He has a strong interest in reflectarray and reconfigurable reflectarray antennas, parabolic reflector antennas, and active phased array antennas for advanced radar applications. Additionally, he explores rectennas, rectifying metasurfaces, and millimeter-wave (mmWave) antenna design.
Position:
Visiting Researcher
Institution:
The University of Texas at Dallas
PAARD Alumni (8 PhD, 13 MS in ECE)
Alumni Section
Caleb Nelson
Graduate Research Assistant, MS
(Present - Present)
Thesis title:
Position:
Institution:
Simon Duthoit
Graduate Research Assistant, MS
(Jul. 2015 - Apr. 2018)
Simon Duthoit graduated from Polytech' Lille at the Université Lille 1 in France, with his Master's in ECE (Electrical and Computer Engineering) in July 2015. After an internship at the RIL (Radar Innovations Laboratory) at (OU) Oklahoma University from March to July 2015, he started a MS in ECE at the same location. His research interests comprise antenna characterization and radar calibration using UAVs (Unmanned Air Vehicles). Simon is working at NSI-MI Technologies as a System Engineer since June 12. 2018.
Thesis title:
UAV-Based in Situ Antenna Characterization: Analysis and Design Requirements
Position:
Experienced RF Microwave Engineer
Institution:
Boeing
Jose Diaz Diaz
Graduate Research Assistant, MS
(Jan. 2015 - Jul. 2018)
Jose D. Diaz was born in Caguas, Puerto Rico in 1990. He received the B.S. degree in 2015 in Electrical and Computer Engineering and a Minor in Atmospheric Sciences both in 2015, from the University of Puerto Rico at Mayagüez (UPRM). Over the course of his undergraduate studies, he spent four summers doing internships where two of them were in UPRM working with X-band radars in CASA. The other two he spent in the National Weather Service in Miami, Florida and in the National Center for Atmospheric Research (NCAR) in Boulder, CO. In 2015, he became a research assistant in the Advanced Radar Research Center (ARRC) where he currently studies and conducts research on high performance antenna elements for phased array radars, under the supervision of Dr. Jorge Salazar at The University of Oklahoma (OU).
Thesis title:
Position:
Radar System Engineer
Institution:
Johns Hopkins University Applied Physics Laboratory (APL)
Alessio Mancini
Graduate Research Assistant, PhD
(Aug. 2015 - Dec. 2018)
Alessio Mancini was born in Bologna (Italy). He received his bachelor's and master's degree in engineering of Telecommunications from the University of Bologna, Italy, in 2007 and 2011 respectively. In 2012 he started his PhD career at the Colorado State University as a close collaborator of NCAR until 2014. His main research topics have been NF measurements and Far Field transformation, radome characterization. In 2015 he joined the University of Oklahoma to complete his PhD focusing on radome characterization. He graduated in Dec. 2018. In Jan. 2019, Alessio joined the NSI-MI technology to works as a System Engineer.
Thesis title:
A New Research Method to Evaluate the Impact of Wet Radomes on Dual-Polarized Weather Radars and Communication Systems
Position:
RF Microwave Engineer
Institution:
NASA Jet Propulsion Laboratory
Alexander Stringer
Graduate Research Assistant, MS
(Jan. 2018 - Dec. 2018)
Alexander J. Stringer was born in Urbana, Illinois in 1987, and grew up in Socorro, New Mexico. He got an AA degree in Political Science from Northwest College in 2009. He then received a B.S. degree in Electrical Engineering in 2014 from the New Mexico Institute of Mining and Technology (NMT). During his undergraduate studies he worked for four years at the Energetic Materials Research and Testing Center as a student engineer/lab technician. After completing his undergraduate studies, he spent two years working for Halliburton Energy Services as an electronics engineering designing down-hole tools. In 2016 he took a position with the Department of Defense as an electronics and software engineer. In the fall of 2017, he began his graduate studies in Electrical and Computer Engineering at the University of Oklahoma (OU). Alex joined PAARD team in Jan. 2018 and got his master's degree in electrical engineering in Dec. 2018.
Thesis title:
A Novel Method for the Characterization of Anisotropic Materials
Position:
Principal Investigator
Institution:
76 SWEG Office of Research
Joel Love
Graduate Research Assistant, MS
(Jan. 2019 - Jul. 2019)
Joel Love received his Bachelors of Science in Engineering degree with concentrations in mechanical and electrical engineering from Messiah College in 2014. After graduating, he worked at SRC, Inc for one year as an electronic warfare engineer building software models of radar systems. In 2015 he transitioned to a position with Wyle Laboratories (now KBRwyle) where he continues to work leading sustainment engineering projects for the Air Force. He began his graduate studies in Electrical and Computer Engineering at the University of Oklahoma (OU) in the fall of 2016 to gain a better understanding of radar systems. He continues to improve that understanding through phased array radar research under Dr. Jorge Salazar, beginning in January 2019.
Thesis title:
Automated Calibration of an Anisotropic Materials Characterization Instrument
Position:
Radio Frequency Engineer
Institution:
North Star Scientific Corporation
Rodrigo Lebron Garcia
Graduate Research Assistant, PhD
(Aug. 2015 - Mar. 2020)
Rodrigo M. Lebron Garcia was born in Asunción, Paraguay. He received the B.S. degree in Mechatronics from the Universidad Nacional de Asunción, in 2012, and the M.S. degree in mechanical engineering from the Universidad Federal do Rio Grande do Sul, RS, Brazil, in 2015. He enrolled at the University of Oklahoma during Fall 2015 in the electrical and computer engineering Ph.D. program, where he works as a graduate research assistant in the Advanced Radar Research Center. Currently he is working on an automated robotic RF scanner for active phased array characterization at
Thesis title:
Techniques and Instrumentation for Phased Array Calibration
Position:
OTA Validation Engineer
Institution:
Apple
Thomas Brachtenbach
Graduate Research Assistant, MS
(Jan. 2019 - Apr. 2020)
Thomas E. Brachtenbach was born in Lompoc, California in 1996 and grew up in Denver, Colorado. He received a B.S in Electrical Engineering from the University of Oklahoma in 2018 and is currently working towards his M.S degree in Electrical Engineering under Dr. Salazar. He started working for the Phased Array Antenna Research and Development Group (PAARD) in the Summer of 2017 at an internship at the Advanced Radar Research Center (ARRC) as an undergraduate research assistant. He continued working for the PAARD the remainder of his undergraduate degree, as well as completing an internship as a Design Engineer for Garmin. His interests include phased array antenna design, characterization, and calibration, non-periodic array design, and graceful degradation.
Thesis title:
Automation of Advanced Scanners for RF Metrology
Position:
Antenna Engineer II
Institution:
Amazon Project Kuiper
Javier A. Ortiz
Graduate Research Assistant, PhD
(Jan. 2015 - Jun. 2020)
Javier Ortiz received his B.Sc. degree in electrical engineering from the University of Puerto Rico, Mayagüez, PR, in 2013. He is currently pursuing his Ph.D. degree at the University of Oklahoma, Norman, OK.
During his time at the University of Puerto Rico Mayagüez he worked as an undergraduate research assistant on projects in electromagnetics topics. In 2012 he Co-founded an IEEE MTT/GRS/APS Joint Chapter and was president from 2012 to 2014. From 2013 to 2014 he worked as a volunteer laboratory teaching assistant and graduate research assistant at the university's Puerto Rico Weather Radar Network.
Thesis title:
Impact of Edge Diffraction in Dual-Polarized Phased Array Antennas
Position:
Senior Electrical Engineer
Institution:
Raytheon Intelligence and Space
Kevin Constien
Graduate Research Assistant, MS
(Jan. 2019 - Aug. 2020)
Kevin Constien was born in Fort Worth, Texas in 1996. He graduated from the University of Oklahoma in 2018 with a B.S. degree in Electrical Engineering. He is currently working towards his M.S. in Electrical Engineering at the University of Oklahoma under Dr. Jorge Salazar. He began working for Dr. Salazar as a member of the Phased Array Antenna Research and Development Group (PAARD) in May 2017 as an undergraduate research assistant where he continued to do research for the rest of his undergraduate career. He also completed an internship as an RF engineer at L3 Advanced Systems and Technologies (formerly Mustang Technology) where he tested and simulated various RF components. His interests include linear slot waveguide array design, phased array antenna design and characterization, and the design of high-performance radiating elements.
Thesis title:
Analysis of the Finite Array on the Scanning Performance of Phased Array Antennas
Position:
Electrical Engineer
Institution:
Raytheon Technologies (Boston)
Arturo Umeyama
Graduate Research Assistant, PhD
(Jan. 2017 - May. 2021)
Arturo Y. Umeyama (S’16) received the B.S. degree in mechatronics engineering from the National University of Asunción, Asunción, Paraguay, in 2012, and the M.S. degree in electrical and computer engineering from The University of Oklahoma, Norman, OK, USA, in 2016, where he is currently pursuing the Ph.D. degree in electrical and computer engineering. He is currently a Graduate Research Assistant with the Advanced Radar Research Center, The University of Oklahoma. His research interests include advanced signal processing for weather radars, spectral analysis, and numerical radar simulation.
Thesis title:
Unmanned Aerial Vehicle-based Far-Field Antenna Characterization System for Polarimetric Weather Radars
Position:
Signal Analysis Engineer III
Institution:
NASA Jet Propulsion Laboratory
Jose Diaz Diaz
Graduate Research Assistant, PhD
(Oct. 2018 - May. 2021)
Jose D. Diaz was born in Caguas, Puerto Rico in 1990. He received the B.S. degree in 2015 in Electrical and Computer Engineering and a Minor in Atmospheric Sciences both in 2015, from the University of Puerto Rico at Mayagüez (UPRM). He is pursuing the Ph.D. degree in electrical engineering with The University of Oklahoma (OU), Norman, OK, USA, where he is involved in high-performance antenna elements for phased-array radars. He became a Research Assistant with the Advanced Radar Research Center, The University of Oklahoma, in 2015, under the supervision of Dr. Jorge Salazar. During his studies, he spent a summer researching ultralow cross polarization antennas in Naval Research Laboratories, Washington, DC, USA. He is also a full-time Engineer with the Advanced Radar Research Center while completing his Ph.D.
Thesis title:
Ultra-Low Cross Polarization Antenna Architectures for Multi-Function Planar Phased Arrays
Position:
Radar System Engineer
Institution:
Johns Hopkins University Applied Physics Laboratory (APL)
Nim R. Ccoillo Ramos
Graduate Research Assistant, PhD
(Jan. 2019 - Dec. 2022)
Born in Marcona, Peru in 1994, Nim R. Ccoillo Ramos got the B. Sc and M. Sc degrees in Electronics Engineering from Universidad Nacional de Ingenieria (UNI, Lima-Peru) in 2016 and 2018, respectively. At the end of his undergraduate studies, he joined in the National Institute of Research and Training in Telecommunications (INICTEL-UNI, Lima-Peru), working as an intern in Electronics Engineering with focus on Electromagnetics and after graduate studies, as a research assistant. During his graduate studies, he worked in X-and-P-band radar image processing to estimate forest changes in the Amazon, having a six-month stay at the Department of Telecommunications of the State University of Campinas (DECOM-UNICAMP, Brazil). Since Spring 2019, he has been a PhD student in the Electrical and Computer Engineering at the University of Oklahoma, researching in electromagnetic antenna modeling for phased array radars at PAARD.
Thesis title:
Electromagnetic Modeling Methods for Microstrip Patch Antennas up to the Millimeter-Wave and Sub-Terahertz Bands
Position:
Engineer
Institution:
MathWorks
Antonio R. Segales
Graduate Research Assistant, PhD
(Aug. 2017 - Dec. 2022)
Thesis title:
Design and Implementation of a Novel Multicopter Unmanned Aircraft System for Quantitative Studies of the Atmosphere
Position:
Research Scientist
Institution:
Cooperative Institute for Severe and High-Impact Weather Research and Operations (CIWRO)
Khuda Burdi
Graduate Research Assistant, MS
(Aug. 2022 - Jul. 2023)
Khuda Burdi (S'20) was born in Hunza, GB, Pakistan, in March 1998. He received the B.Sc. degree in electrical engineering from the University of Oklahoma, Norman, in 2022 and continued to receive his M.Sc. degrees in electrical and computer engineering from the University of Oklahoma, Norman, in 2023. He is now pursuing a Ph.D. degree in electrical engineering with focus on in-situ calibration and integration of radar systems. From May 2020 to Jul. 2022, he was an Undergraduate Research Assistant with the Advanced Radar Research Center, University of Oklahoma (ARRC). He is currently a Graduate Research Assistant with the Phased Array Antenna Research and Development group (PAARD) and the ARRC at The University of Oklahoma, Norman, OK, USA. His current research interests include microwave/millimeter-wave circuits, material characterization, UAS antenna and radar characterization systems, antennas and phased array antennas.
Khuda Burdi is a student member of the Institute for Electrical and Electronic Engineers (IEEE).
Thesis title:
A New Front-End System For UAV-Based Antenna Measurements For Polarimetric Weather Radars
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Syed Shahan Jehangir
Graduate Research Assistant, PhD
(Aug. 2019 - Jul. 2023)
Syed Shahan Jehangir received his B.S. degree in electrical (telecommunication) engineering from COMSATS University, Lahore, Pakistan, in 2014 and his M.S. degree in electrical engineering from King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudia Arabia, in 2017. In 2014, he worked as a Research Assistant, with the School of Electrical Engineering and Computer Science, National University of Science and Technology (NUST), Islamabad, Pakistan. From 2017 to 2019, he worked as a Research Associate with the Department of Electrical Engineering, United Arab Emirates University, Al-Ain, UAE. He is currently a Graduate Research Assistant (GRA) with the Phased Array Antenna Research and Development (PAARD) group at the Advanced Radar Research Center (ARRC), the University of Oklahoma (OU), USA. His research interests include phased array antennas for radar applications, lens antennas for mm-wave automotive radars, UAV-based in-situ radar characterization and measurements, material characterization, two-phase mixing theory, directional and miniaturized MIMO antennas for 4G/5G, and reconfigurable MIMO antennas. For more information about Syed, contact him through his Linkedin, or email: syed.s.jehangir-1@ou.edu.
Thesis title:
Ultra-wideband Antenna Solutions for Radars and Communication Systems
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Elizabeth Joyce
Graduate Research Assistant, MS
(Aug. 2022 - Jul. 2024)
Originally from Allen, TX, Elizabeth completed her BS in Electrical Engineering with Summa Cum Laude distinction in December 2022 at the University of Oklahoma. She is now focusing on her master’s thesis research of creating a super compact range for sub-terahertz applications. She has worked for Dr. Jorge Salazar since summer of 2021 when she began working in metrology applications and eventually migrated to UAS-based metrology applications. During a Phased Array Antennas class project, she designed a mmWave series-fed microstrip patch antenna array operating at 77 GHz. She decided to continue pursuing research in the mmWave and sub-THz spectrums by working towards a super compact range for metrology purposes. In April 2022, she became a National Science Foundation Fellow after and received a grant from the NSF Graduate Research Fellowship Program to continue her research.
Thesis title:
Compact Antenna Test Range for mmWave Metrology Applications
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Alexis Oblitas
Graduate Research Assistant, MS
(Aug. 2022 - Jul. 2024)
Edgar A. Oblitas was born in Lima, Peru in 1996. He completed and received a Bachelor's degree in Electronics Engineering in the Peruvian University of Applied Sciences (UPC) in July 2022. He worked for the Phased Array Antenna Research and Development Group (PAARD) the entire year of 2020 at an Internship at the Advanced Radar Research Center (ARRC), and later returned in another Internship in January 2022. Furthermore, he was accepted as an M.S. and started his studies in August 2022. His interest includes automated RF scanning systems, phased array antenna characterization and calibration.
Projects and Research Interest:
• mmWave RF scanning system
• NF scanning automation
• Antenna Array Characterization and Calibration
Thesis title:
Enhancing Multi-purpose mmwave System And W-band Antenna In Package Calibration And Measurements
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Luis Felipe Moncada
Graduate Research Assistant, MS
(Aug. 2022 - Jul. 2024)
Luis Felipe Moncada Calmet received B.S. degree in electronics engineering from Antenor Orrego Private University, Trujillo, Peru, in 2021. Currently pursuing a master’s degree in electrical engineering at the University of Oklahoma. In spring 2022 he did an internship at the RIL (Radar Innovations Laboratory) at OU, working in a standalone embedded system to monitor soil properties in collaboration with the Institute for Resilient Environmental and Energy Systems. He started a position as a graduate research assistant in Fall 2022 at the RIL. At Spring 2023 he started an antenna calibration project in collaboration with Metawave company. His research interests are microwave engineering and RF hardware design.
Thesis title:
The Development of a New Ka-Band Near-Field Planar Measurement System for a Digital Phased Array Radar
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Marcelo Moreno
Graduate Research Assistant, MS
(Aug. 2022 - Jul. 2024)
Marcelo F. Moreno Marin was born in La Paz, Bolivia in 1992. He received a B.S. degree in Electronics from the Universidad Privada de Santa Cruz in 2014, a Specialist degree in Embedded Systems from the Universidad de Buenos Aires in 2017 and he is currently working towards his M.S. in Electrical and Computer Engineering at the University of Oklahoma. During his life as an engineer, he worked in several sectors of the industry from his natal country developing different solutions for control and automation. He establishes his own company in 2020 doing work in the home automation area and designing custom electronic systems for companies abroad. He is currently a Graduate Research Assistant working on a project aimed at developing a system with new technologies, power-efficient and low-cost for variable speed signals on Oklahoma highways. His research interests include embedded systems, PCB design, and product design and manufacture.
Thesis title:
The Development of a Smart and Low Power Consumption Variable Speed Limit Sign for the Oklahoma Department of Transportation
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Sergio Rodriguez
Graduate Research Assistant, MS
(Aug. 2022 - Jul. 2024)
Sergio Rodriguez Masumura is a M.S. Student of Electrical Engineering, currently on his second semester. He came to OU in January of 2022 as an intern, after finishing his undergrad studies in his homeland Peru, and he has been working with Dr. Salazar since then. During the internship and the beginning of his M.S. studies, he worked designing (Ansys-HFSS) and fabricating (3D printing) flat dielectric lenses for S-band and X-band. He is currently dedicating himself to working in algorithms to improve the two-way radiation patterns of systems by using the Virtual Array theory and changing the spacing of the elements in the arrays of transmission and reception.
Thesis title:
Exploring Beamforming Techniques for mmWave Scanning Antennas
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Graduate Section
Graduate Students (5 PhD Student, 0 MS Student in ECE)
Alexis Oblitas
Graduate Research Assistant, PhD Student
(Aug. 2024 - Present)
Edgar A. Oblitas was born in Lima, Peru in 1996. He completed and received a Bachelor's degree in Electronics Engineering in the Peruvian University of Applied Sciences (UPC) in July 2022. He worked for the Phased Array Antenna Research and Development Group (PAARD) the entire year of 2020 at an Internship at the Advanced Radar Research Center (ARRC), and later returned in another Internship in January 2022. Furthermore, he was accepted as an M.S. and started his studies in August 2022. His interest includes automated RF scanning systems, phased array antenna characterization and calibration.
Projects and Research Interest:
• mmWave RF scanning system
• NF scanning automation
• Antenna Array Characterization and Calibration
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Luis Felipe Moncada
Graduate Research Assistant, PhD Student
(Aug. 2024 - Present)
Luis Felipe Moncada Calmet received B.S. degree in electronics engineering from Antenor Orrego Private University, Trujillo, Peru, in 2021. Currently pursuing a master’s degree in electrical engineering at the University of Oklahoma. In spring 2022 he did an internship at the RIL (Radar Innovations Laboratory) at OU, working in a standalone embedded system to monitor soil properties in collaboration with the Institute for Resilient Environmental and Energy Systems. He started a position as a graduate research assistant in Fall 2022 at the RIL. At Spring 2023 he started an antenna calibration project in collaboration with Metawave company. His research interests are microwave engineering and RF hardware design.
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Johan Oblitas
Graduate Research Assistant, PhD Student
(Aug. 2024 - Present)
Johan A. Oblitas Mantilla was born in Lima, Peru in 2002. He is an undergraduate Systems Engineering student at the University of Lima where most of his activities and knowledge are related to web development; programming in languages such as Java, Python, Javascript and C++; database management; data analysis and process management. He is currently doing an internship at the Advanced Radar Research Center, where he is working for the Phased Array Antenna Research and Development Group (PAARD) in the area of applying electromagnetics and remote sensing. He has been learning and assisting in different processes such as material characterization, laser cutting and electromagnetics simulation. He also has been a great support of the PAARD's official website.
Position:
System and Computer Engineer
Institution:
Advanced Radar Research Center (ARRC)
Leandro Takeda
Graduate Research Assistant, PhD Student
(Jan. 2026 - Present)
Leandro Yoshiro Takeda Cabrera is a electronic engineer (Universidad Privada Antenor Orrego) now pursuing a Ph.D. in Electrical and Computer Engineering at the University of Oklahoma. He has hands-on industry experience in networking, IT support, and Active Directory administration at Cartavio S.A.A., plus automation and electrical panel design experience at Megan Smart Technology. His project portfolio spans computer vision, robotics (Cartesian robot, conveyor classifiers), and IoT security systems. He's also been active in IEEE leadership (past President, IEEE RAS Student Chapter) and STEM outreach, organizing and instructing robotics competitions and workshops.
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Alanna Tran
Graduate Research Assistant, PhD Student
(Aug. 2026 - Present)
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Undergrad Section
Undergraduate / Intern Students
Robert Baines
RICE ME Undergraduate Student
(May. 2016 - Aug. 2016)
Robert Baines is an undergraduate Mechanical Engineering student at Rice University. His primary areas of interest are robotics, system controls, and nanotechnology. He started work at the Advanced Radar Research Center as an intern in the Summer of 2016. Currently, he is developing a user-friendly graphical interface integrating an environmental chamber controller and robotic RF scanner trajectory planner.
Robert Baines is currently pursuing his Doctoral degree at Yale University.
Position:
PhD Student Researcher
Institution:
Yale University
Brent Wolf
ME Undergraduate Student
(Jun. 2016 - Aug. 2016)
Brent Wolf is a Mechanical Engineering student at OU. He is an experienced welder, experienced engine/vehicle builder, and the 2016 Sooner Rover Teams Lead Mechanical Engineer. His interests include but are not limited to drivelines, robotics, alternative energy & fuels, turbo chargers, speedboats, submarines, motorcycles, trucks, ballistics, fluid dynamics, chemistry, electric motor design, battery technology, radar applications, RF theory, material science, FPGA's, algorithms, computer learning, AI, modern physics, drones, analytical calculus, numerical methods, permaculture, and 3D printing methods. Visit www.Brentwolf.com to learn more about Brent.
Position:
Mechanical Engineer
Institution:
Spectrum Brands / Kwikset Locks
William Doyle
ECE Undergraduate Student
(Mar. 2016 - Dec. 2017)
William Doyle is a pursuing a bachelor¹s degree in Electrical Engineering at the University of Oklahoma. His main focus has been Unmanned Aerial Vehicle Design, and robotics. He has spoken at multiple speaking engagements regarding his UAV work. He is also the Sooner Rover Team¹s Electrical Engineering Lead. He has built and tested more than dozens artificially stabilized unmanned systems in the last 2 years.
Willian Doyle is currently a CASS Engineer.
Position:
Electrical Engineer
Institution:
CASS
Kevin Constien
ECE Student
(Jun. 2017 - Dec. 2018)
Kevin Constien is an undergraduate student at the University of Oklahoma and is currently pursuing a bachelor’s degree in electrical engineering. His interests include but are not limited to the design and implementation of active phased array antennas that are both low-cost and reliable and the development of high-performance antenna radiating elements.
Position:
Electrical Engineer
Institution:
Raytheon Technologies (Boston)
Thomas Brachtenbach
ECE Student
(Jun. 2017 - Dec. 2018)
Thomas E. Brachtenbach was born in Lompoc, California in 1996 and grew up in Denver, Colorado. He received a B.S in Electrical Engineering from the University of Oklahoma in 2018 and is currently working towards his M.S degree in Electrical Engineering under Dr. Salazar. He started working for the Phased Array Antenna Research and Development Group (PAARD) in the Summer of 2017 at an internship at the Advanced Radar Research Center (ARRC) as an undergraduate research assistant. He continued working for the PAARD the remainder of his undergraduate degree, as well as completing an internship as a Design Engineer for Garmin. His interests include phased array antenna design, characterization, and calibration, non-periodic array design, and graceful degradation.
Position:
Antenna Engineer II
Institution:
Amazon Project Kuiper
David Hayes
ECE Undergraduate Student
(Jun. 2017 - Aug. 2018)
David Hayes is an undergraduate student at the University of Oklahoma and is currently pursuing a bachelor’s degree in electrical engineering. His interests include but are not limited to robotics, drones, radar technology, and antenna design.
Position:
Institution:
Eivy Arroyo Diaz
ECE Undergraduate Student
(Jan. 2017 - Dec. 2017)
Eivy Arroyo Diaz is an undergraduate student who is currently pursuing a bachelor’s degree in electrical engineering at the University of Oklahoma. His interests are but not limited to high-performance antenna elements for phased array radars, high-frequency electromagnetic modeling, and antenna design.
Eivy is a ECE MS students working under the supervision of Dr. Sigmarsson
Position:
System Engineer
Institution:
Northrop Grumman
Johan Oblitas
CS Undergraduate Student
(Jan. 2023 - Mar. 2023)
Johan A. Oblitas Mantilla was born in Lima, Peru in 2002. He is an undergraduate Systems Engineering student at the University of Lima where most of his activities and knowledge are related to web development; programming in languages such as Java, Python, Javascript and C++; database management; data analysis and process management. He is currently doing an internship at the Advanced Radar Research Center, where he is working for the Phased Array Antenna Research and Development Group (PAARD) in the area of applying electromagnetics and remote sensing. He has been learning and assisting in different processes such as material characterization, laser cutting and electromagnetics simulation. He also has been a great support of the PAARD's official website.
Position:
System and Computer Engineer
Institution:
University of Lima
Caleb Nelson
Graduate Research Assistant
(Jun. 2024 - Dec. 2024)
Position:
Electrical Engineer
Institution:
Advanced Radar Research Center (ARRC)
Josue Guzman Alcas
ME Undergraduate Student
(Apr. 2026 - Sept. 2026)
Position:
Mechanical Engineer
Institution:
Drexel University
Brian Stade
ECE Undergraduate Student
(Present - Present)
Position:
Electrical Engineer
Institution:
The University of Oklahoma
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