Current PhD Students

David West (Ph.D., 2022-present)

David received his B.S. in Electrical Engineering from the University of South Carolina in 2022. During his time as an undergraduate, he participated in an internship at Oak Ridge National Laboratory in the summer of 2019, where he assisted with a battery modeling framework. He worked on a wireless power transfer project with Prof. Guoan Wang at the University of South Carolina from fall 2019 and spring 2022. He joined the mmWave Antennas and Arrays Laboratory at Georgia Institute of Technology as a PhD student in Summer 2022. David received a Presidential Fellowship from Georgia Tech.

Seung Yoon (Sonny) Lee (Ph.D., 2022-present)

Sonny joined mmWave Antennas and Arrays Laboratory at the Georgia Institute of Technology as a Ph.D. student in August 2022. He received a B.S. degree in Computer and Communication Engineering from Korea University, Seoul, Korea, in 2016 and an M.S. degree in Electrical Engineering from Pohang University of Science and Technology (POSTECH), Pohang, Korea, in 2018. From July 2018 to August 2020, he worked as a Semiconductor/RF Engineer at SK Hynix, Icheon, Korea. From August 2020 to August 2022, he worked for Samsung Research, Seoul, Korea, and served as an RF/Antenna Engineer conducting Sub-THz antennas and mmWave RIS for next-generation communication technologies. He has published 2 international journals, 1 domestic journal, and 5 international conference papers and served as the inventor of 20 patents. He received several awards, including the Class of 2018 Outstanding Master’s Thesis Award from POSTECH and the 1st Prize Best Paper Student Award from the IEEE International Symposium on Antennas and Propagation.

Sree Adinarayana Dasari (Ph.D., 2022-present)

Adi received his B.S. degree in Electrical Engineering and Economics from The Pennsylvania State University in May 2022. His honors thesis focused on designing and implementing a low-power radar to study the electron density profile of the ionosphere. At Penn State, he worked at The Applied Signal Processing and Instrumentation Lab, designing antennas for a harmonic transponder for insect tracking. He was an intern at The Technische Universität Bergakademie Freiberg. At Freiberg, he developed an experiment to study the effects of microwaves on burning velocity, UV-VIS-spectra, and exhaust gas composition of premixed propane flames. He joined mmWave Antennas and Arrays Laboratory as a PhD student in fall 2022.

Walter Disharoon  (Ph.D., 2021-present)

Walter received his B.S. in Electrical Engineering from Kennesaw State University, GA, in 2021. In Undergrad he did a Co-Op at Georgia Tech Research Institute with a focus in RF Engineering, digital arrays, and RF measurements. He is currently pursuing a PhD at Georgia Institute of Technology where he has joined the mmWave Antennas and Arrays Laboratory with a current research focus in Reflectarray Antennas.

Thomas G. Williamson  (Ph.D., 2020-present)

Thomas is a Research Engineer in the Antenna Systems Division of the Sensors and Electromagnetic Applications Lab at Georgia Tech Research Institute, where his work focuses on modern phased arrays, radar, antenna design, and RF circuit design. Mr. Williamson received both the BSEE and MSEE from North Carolina State University in 2018 and 2019 respectively. During the course of his undergraduate and master’s degree he completed internships at Los Alamos National Laboratory, Sandia National Laboratories, and Qorvo. Prior to his academic career, Mr. Williamson completed a five year enlistment in the United States Marine Corps where he deployed twice to Afghanistan and once to Guatemala. Currently, he is pursuing his PhD at Georgia Tech, researching novel designs of millimeter wave circuits, antennas, and arrays by utilizing phase change materials such as vanadium dioxide.

Mark Lust (Ph.D., 2108-present) [Google Scholar]

Mark has been with group since January 2017, when he joined as a junior undergraduate student. He graduated with his B.S. in Electrical and Computer Engineering from the Ohio State University in May 2018. He was an intern with NASA Glenn Research Center in Cleveland, OH in Summer 2018 focusing on antenna arrays for space communication. Currently, he is in his second year of the Electrical Engineering PhD program and recently passed his qualifying exam in October 2019. Mark is the recipient of the 2018-2019 University Fellowship award. Mark is also recipient of the AFRL/DAGSI Ohio Student-Faculty Research Fellowship award. His current projects include vanadium dioxide (VO2) deposition and characterization, microbolometer antenna design (collaborating with fellow group member Shangyi Chen), and other VOdevices. Mark collaborates with the OSU Department of the Materials Science and Engineering on VO2 material characterization. He also collaborates with the Air Force Research Laboratory at Write Patterson Air Force Base (e-mail:

Jordan Ramsey (Ph.D., 2017-present) [Google Scholar]

Jordan received her B.S. in Computer Engineering at the University of Maryland-Baltimore County (UMBC) , in 2016. She joined the RF Microsystems group and started her PhD at Ohio State in the ECE department in August 2017. She arrived to the university as a graduate fellow. Before starting at The Ohio State Jordan has had internships at UMBC in high performance computing, modeling of Parkinson’s patient’s motor ability and touch interaction in the operating room, Livermore national lab in technological policy and business relations, Johns Hopkins University focusing on image based calibration of motion estimation algorithms, and at Oak ridge national laboratory investigating the effects of routing procedures on total vehicle emission. In May 2019 Jordan completed her Ph.D. qualifying exam. During the course of her time in the Microsystems group she has contributed to the MEMS pulmonary artery banding device project for the treatment of congenital heart disease and is currently working on reconfigurable reflectarrays (email:

Past PhD Students

Jack Eichenberger (Ph.D., graduated in 2022) [Google Scholar]

Jack Eichenberger joined the RF Microsystem group as a PhD student in August of 2017. He was awarded the Ohio State University Fellowship during the 2017-2018 school year, as well as the AFRL Student/Faculty Fellowship during the summer of 2019 and GRA in 2018-219. Jack’s research interests include ultrawideband antennas, antenna arrays, and metasurfaces. He designed, fabricated, and tested an ultrawideband Vivaldi antenna operating from 2.5 to 57 GHz. Projects include beam steering by mechanical actuation and a magnetically reconfigurable metasurfaces in collaboration with Prof. Renee Zhao’s lab in the Department of Mechanical Engineering, Stanford University. Jack graduated in May 2022 with PhD dissertation titled “Novel Ultra-wideband Vivaldi Antenna and Mechanically Reconfigurable Antenna Arrays”. (e-mail:

Kendrick Henderson (Ph.D., Graduated in 2021) [Google Scholar]

Kendrick received his B.S. of Electrical Engineering (2015), B.S. of Computer Engineering (2015), and M.S. of Electrical Engineering (2017) from the University of South Alabama. Kendrick started his PhD in Electrical and Computer Engineering and joined Prof. Ghalichechian’s group at the Ohio State University in Fall 2017. His studies were funded by the Department of Defense SMART program. He graduated with PhD in 2020. His research projects included metal-only reflectarrays, reconfigurable reflectarrays, and shaped beam reflectarray. Ken joined US Naval Surface Warfare Center in 2021. (email:

Shangyi Chen (Ph.D., Graduated in 2021) [Google Scholar]

She earned her B.S. degree from Huazhong University of Science and Technology in 2014, and the M.S. degree from the University of Missouri in 2016. Shangyi Chen was a Ph.D. student at the Department of Mechanical and Aerospace Engineering and the ElectroScience Laboratory. Shangyi joined the group in January 2017 and appointed as a Graduate Research Associate. Her research focused on microbolometers using phase-change materials (PCM) for millimeter-wave (mmW) imaging. She received her Ph.D. in Mechanical Engineering at the Ohio State University in 2021. She joined University of Pennsylvania as a Post doctoral researcher in 2021. (email:

Jiantong Li (Ph.D., Graduated in 2020) [Google Scholar]

Jiantong graduated from Tianjin University, Tianjin Shi, China in 2012 with a B.S. degree in Electronic Science and Technology and a M.S. degree in Integrated Circuit Engineering in 2015. After graduation, he had an internship in a Chinese Medical Center for six months. Jiantong started his PhD in Electrical and Computer Engineering in Fall 2015 and joined the RF Microsystems group in February 2017. He advanced to candidacy in November 2018. His research is centered on novel antenna arrays. His past project includes design and simulation of ultra wideband tightly coupled dipole arrays. His current projects include (a) design, fabrication and measurement of millimeter wave array at 60 GHz using MEMS fabrication processes; (b) design, fabrication (on PCB) and measurement of millimeter wave array at 60 GHz, and (c) non-contact on-chip millimeter wave antenna measurements. Jiantong was a Graduate Research Associate at ESL. He gradudated with Ph.D. in December 2020 and joined Samsung Research America (email:

Behnam Ghassemiparvin (Ph.D., Graduated in 2020) [Google Scholar]

Behnam received the B.S. degree from University of Tabriz, Tabriz Iran in 2010 and the M.S. degree from Bilkent University in 2012. During his M.S. studies his research was focused on dyadic Green’s function solution for scattering from wedge structures.  He has started his Ph.D. in Electrical and Computer Engineering at The Ohio State University in 2014 and joined the RF Microsystem’s group at the ElectroScience Lab in January 2015. During his Ph.D. he has worked on the design, fabrication and testing of millimeter wave reconfigurable antennas and microsystems based on paraffin phase change materials. He has also worked on the complex permittivity characterization of materials using time-domain spectroscopy. He graduated in January 2020 and joined Apple Inc. as antenna engineer.

Ersin Yetisir (Ph.D., Graduated in 2015)Ersin Yetisir

Ersin received the B.Sc. degree in electrical and electronics engineering from Bilkent University, Ankara, Turkey, in 2010, and the Ph.D. degree from The Ohio State University, Columbus, OH, USA, in 2015. His dissertation was advised by Prof. John Volakis and co-advised by Prof. Nima Ghalichechian. From 2010 to 2015, he was a Graduate Research Assistant with the ElectroScience Laboratory (ESL), The Ohio State University. He was a post-Doctoral Researcher in 2016 in Prof. Ghalichechian’s group. At Ohio State he worked on wideband and low-profile antenna array and feed-network design for microwave and millimeter-wave frequencies and wideband/multiband antennas with high isolation for MIMO and simultaneous transmit and receive applications. Since 2016, he has been with SpaceX, Redmond, WA, USA, where he has been helping in the design and characterization of low-cost phased array apertures and front-end components and developing calibration methods for satellite and ground terminals. Dr. Yetisir was a recipient of the Best Student Paper Awards at the 2016 USNC/URSI National Radio Science Meeting (second place) and the 2016 International Workshop on Antenna Technologies (coauthor).

Past MS Students

Carmen Matos (M.Sc. with thesis, Graduated in 2020)

Carmen received her B.S. in Electrical Engineering from the University of Puerto Rico at Mayaguez in 2018. During her studies, she had several internships at Boeing, SpaceX, and Mitre Corp working on projects focused in different areas of applied electromagnetics. She joined the Ohio State University in 2018 as a University Fellow. Her research focused on robotically controlled millimeter wave antenna measurement systems. Carmen is the recipient of the 2018 AMTA travel scholarship. She graduated with Masters degree (with thesis) on May 2020 and joined L3-Harris. (email:

Kunchen Zhao (M.Sc. with thesis, Graduated in 2019)

Kunchen Zhao joined the group in 2017 and graduated with M.Sc. degree from Ohio State University in 2019. His thesis is titled “3D Printed Frequency Scanning Slotted Waveguide Array with Wide Band Power Divider”. He joined University of Boulder, CO, to pursue his PhD degree.

Alejandro Johnson-Eusebio (M.Sc. with thesis, Graduated in 2018)

Alejandro Johnson-Eusebio joined the group in 2016 and graduated with M.Sc. degree from Ohio State University in 2018. His thesis is titled “60 GHz 4-Bit Phase Shifter Design with VO2 Switches”. He joined Northrop Grumman Electronics Systems after graduation.

Kyoung Ho (Albert) Jeong (M.Sc. with thesis, Graduated in 2017)

Albert Jeong received his M.Sc. degree from the Ohio State University in 2017. His thesis was titled “Fabrication and Measurement of Millimeter Fresnel Lens and Helical Antenna using Additive Manufacturing”. He joined Samsung Electronics- Korea after graduation.

Annie Roo  (Undergraduate Researcher, 2020-present)

Annie is an undergraduate student pursuing bachelor degrees in electrical engineering and industrial design at The Ohio State University.  She has had internships at General Electric Appliances working on circuit board design, testing and troubleshooting, and at Caterpillar Inc. working on neural network development (email:

Mihir Kasmalkar  (Undergraduate Researcher, 2022)

Mihir  is an undergraduate student studying Electrical Engineering with a minor in Computing and Systems & Architecture at Georgia Tech. He has done internships at Relativity Space Systems and NASA Ames doing mixed-signal and low-voltage power electronics, and he has done RF design with the Space Systems Design Laboratory at Georgia Tech. He is also the electrical hardware lead in the Yellow Jacket Space Program liquid-rocketry team, where he designed a custom DAQ and made the link budget for the flight vehicle. He conducts research at the mmWave Antennas and Arrays Laboratory on 60 GHz transceivers (email:
Other Undergraduate Researchers
  • Gus Workman (email:, Samsung Research America
  • Jennifer Humanchuck (email:; MS student at University of Michigan
  • Grant Senger (BSc 2019), Eschweiler & Potashnik, LLC
  • Spandan Shah (BS ’18), Capital One
  • Scott Lunardini (BSc ’16), General Electric Aviation
  • Benjamin Lough (MSc ’16), Texas Instruments