RESEARCH TEAM

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. 

Rodrigo Lebron Garcia

ECE PhD Candidate

(Aug. 2015-Present)

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 Universidade 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.

Projects & Research of interest

  • Mechatronics, robotics and control systems

  • 3-D RF/Surface and thermal Scanner milimiter PAR

  • Electromagnetic modeling 

  • Active phased array antenna charcaterization and calibration

Arturo Umeyama

ECE PhD Candidate

(Jan. 2017-Present)

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.

Projects & Research of interest

  • Advanced signal processing for weather radars

  • Spectral Analysis & Numerical simulation

  • Unmanned Air Vehicles (UAV)

Jose Diaz Diaz

ECE PhD Candidate

(Jan. 2015-Present)

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).  

 

Projects & Research of interest

  • Microstrip patch antenna element and array

  • High performance dual-polarized radiating antenna

Nafati Aboserwal

Research Associate and NF/FF Anechoic Chamber Manager

(Jan. 2015 - Present)

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.

Projects & Research of interest

  • 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 

  • Reflectarray 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

  • Millimeter wave antenna

Projects & Research of interest

Zeeshan Qamar

Fellow Postdoc

(April. 2018 - Present)

e-mail: zeeshan.qamar@ou.edu

Zeeshan Qamar received the B.Sc. and M.Sc. degrees in electrical engineering from COMSATS Institute of Information Technology (CIIT), Islamabad, Pakistan, in 2010 and 2013, respectively. He received his Ph. D. degree in electronic engineering from City University of Hong Kong, Hong Kong in 2017.

From 2010 to 2013, he was a Research Assistant with the Department of Electrical Engineering, CIIT. He is currently working as Postdoctoral Researcher at The Phased Array Antenna Research and Development Group (PAARD) at OU.  His research interests include microwave/millimeter wave circuits, metamaterials and antenna design.

  • Artificial dielectric materials

  • Antenna aperture design  and surfaces wave supression

  • Microstrip patch antenna element and array

  • PAR feed architectures

Research Associate and Postdoc

PAARD Alumni

Undergraduate  Students

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-Cerreno received a B.S. In ECE from the University Antenor Orrego, Trujillo, Peru, 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-Cerreno 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 assistant professor at the School of Electrical and Computer Engineering in August 2015.  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 millimiter-waver antennas for automobile and communication systems. His research team (PAARD) is collaborating with the National Science Fundation (NSF), U.S. National Oceanic and Atmospheric Administration (NOAA), NASA-JPL, the U.S. Navy Research Lab (NRL), the U.S. Army Research Lab (ARL), the U.S. Airforce Research Lab (AFRL), and NCAR.  In 2019, Dr. Salazar was awarded the prestigious William H. Barkow Presidential Professorship from The University of Oklahoma. Presidential Professors inspire and mentor their undergraduate and graduate students in research and creative scholarly activity within their discipline, and exemplify professional scholarship through their endeavors in teaching, research, 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), The Radio Science Journal, and John Wiley and Sons (https://www.ou-arrc-paard.com/).

 

Javier Ortiz

ECE PhD Candidate

(Jan. 2015-Present)

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. 

Projects & Research of interest

  • Antenna radiating elements and modal analysis

  • Low profile active array antenna

  • Dual-polarized antennas

  • Ground defected structures and broadbad antenna arrays

 
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Projects & Research of interest

Kevin Constien

MS ECE Student 

(Jan. 2019 -  Present)

(PAARD Undergrad: Jun. 2017 - Dec. 2018)

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.

Thomas Brachtenbach

MS ECE Student 

(Jan. 2019 -  Present)

(PAARD Undergrad: 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.

Current Graduate Students

Kevin Constien

ECE Student 

(PAARD Undergrad: 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.

Thomas Brachtenbach

ECE Student 

(PAARD Undergrad: 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.

Eivy Arroyo Diaz

ECE Undergrad student

(PAARD Undergrad: 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

Brent Wolf

ME Undergrad student

(PAARD Undergrad: Jun. 2016 - Present)

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.

William Doyle

ECE Undergrad student

(PAARD Undergrad: March. 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.

David Hayes

ECE Undergrad student

(PAARD Undergrad: 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.

Robert Baines

RICE ME Undergrad student

(NSF-REU Intership: Jun. 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.

 

  • NF Chamber Automation

  • Slotted Waveguide Antennas

  • Antenna Array Design

Projects & Research of interest

Projects & Research of interest

  • Phased Array Antenna Design

  • Linear Slot Waveguide Antennas

  • Phased Array Characterization/Calibration

  • Anechoic Chamber Measurements and Automation

Alex Stringer

MS in Electrical Engineering

(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 on Jan. 2018 and  got his master degree in Electrical Engineering in Dec. 2018.

Thesis title: A novel method for the characterization of anisotropic materials

Position & Institution: Electronics and software engineer,  Department of Defense

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Alessio Mancini, PhD

Doctor of Philosophy 

(Aug. 2015 - Dec. 2018)

Alessio Mancini was born in Bologna (Italy). He received his Bachelor and Master 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.

 

Dissertation title: A new research method to evaluate the impact of wet radomes on dual-polarized weather radars and communication systems.

Position & Institution: System Engineering at the NSI-MI Technology

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Simon Duthoit

MS in Electrical Engineering

(Jul. 2015 - May. 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 Enginer since June 12. 2018 

Thesis title: UAV-based in situ antenna characterization: Analysis and Design Requirements

Position & Institution: System Engineering at the NSI-MI Technology

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Joel Love

MS in Electrical Engineering

(Jan. 2019- July 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 Labortories (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.

Projects & Research of interest

  • Material characterization

  • Electromagnetic antenna modeling

Nim Ccoillo Ramos

ECE PhD student

(Jan. 2019-Present)

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

  • Electromagnetic antenna modeling

  • Array antennas

Seyd Jehangir      

ECE PhD student

(Aug. 2019 - Present)

Completed MS (2015-2017) in Electrical Engineering with a distinction from King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia, under the supervision of prof. Mohammad S. Sharawi. My MS thesis research work involved designing printed compact high gain and high directional Multiple-input-Multiple Output (MIMO) antennas and miniaturized printed antenna arrays for wireless communication. As a first author, I have published 7 journal articles in prestigious journals including Transactions on Antennas (TAP), AWPL, IET-MAP, and Wiley, having 12 papers published in renowned IEEE conference including APS and EuCAP. We have also submitted 4 US patents to the US patent office in 2016 and 2017. I have earned my BSc degree in Electrical Engineering (specialization in Telecommunication) from COMSATS Institute of Information Technology, Lahore, Pakistan, with Distinction and received the Campus Gold Medal by securing the top position.

  • Electromagnetic antenna modeling

  • Array antennas

  • Optical lenses

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