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Our Group


Cody Scarborough, PhD

Professor at CU Boulder

Professor Scarborough was born and raised in a suburb of Houston, Texas. He completed his B.S. in Electrical and Computer Engineering at the University of Texas at Austin in 2017. It was there that he met his lovely wife Amber as a freshman in college. From Texas, he moved to Michigan where he completed his Ph.D. degree in Electrical Engineering and Computer Science at the University of Michigan under the advisement of Professor Anthony Grbic. Professor Scarborough is now an assistant professor at the University of Colorado at Boulder and runs the EMRG. Outside of research, Professor Scarborough enjoys playing music, hiking on the beautiful Boulder Flatirons, tending to his two cats, and skiing.

Arunima Singh

PhD Student

Arunima Singh completed her master’s degree in the nanotechnology field from Indian Institute of Technology (IIT), Roorkee, India. Within this program, she focused her studies on nano-electronic materials for tomorrow’s semiconductor and energy applications. Her interests lie in the development of nanocomposites for MRI applications and radar wave absorption, the study and characterization of nanomaterials, Radar Cross Section (RCS) reduction, Frequency Selective Surfaces (FSS) and Fractal Frequency Selective Surfaces.
As part of the M Tech. program, she has completed various courses in the fabrication and characterization (e.g. XRD and FESEM) of nano-scale materials. She has gained the knowledge of nanoparticle synthesis using several methods like Chemical Vapor Deposition, auto combustion and laser deposition. She has preliminary knowledge within areas like the investigation and characterization of surfaces, electrical characterization of functional layers, and fabrication techniques like laser vapor deposition and thin film techniques. In her M Tech research work she developed metasurface-based Frequency Selective Surfaces (FSS) and Fractal FSS structures for selective transmission of EM waves impinging on microwave absorbing materials for reduction of RCS.


Joel Johnson

PhD Student

Joel Johnson received his B.S. and M.S. in Electrical Engineering from the University of Texas at Dallas in 2021 and 2022 respectively. He interned at UT Dallas in Dr. Kenneth O's Lab and worked on characterizing novel low phase noise circuits. He also interned at Qorvo under High Performance Analog group working on modeling RF components, PA/DPD simulations, and a MMIC GaN PA design. Enticed by MMIC design, he decided to join the RF group at CU Boulder in Spring 2023 to pursue his PhD under the advisement of Dr. Scarborough and Dr. Popovic to further learn about novel designs in MMICs.
In his free time, he enjoys reading for fun and passionately follows motor racing.

Allie Montgomery

PhD Student

Allie Montgomery received their BSE in electrical engineering from the University of Iowa in May 2023. While there, she worked with the Quantum Light Control (QLiC) Lab on projects relating to quantum optics and photonics. After graduating, she came to the University of Colorado in Fall 2023 to pursue her Ph. D.

Timothy MacDonald 

Master's Student

Timothy MacDonald received the B.S. degree in electrical engineering from California State University, Northridge in 2023, where he published and presented at the 2023 IEEE AP-S in Portland, Oregon on his research “A Ku-Band Deployable Broadband Reflectarray for CubeSat Applications”. Throughout his undergraduate studies he worked in the University of Rochester’s integrated photonics lab (National Science Foundation grant), and interned with Redwire Space as the lead mechanic on a compact test range for in house S21 measurements, as well as with The Aerospace Corporation where his projects included design of a 2D multi-octave antenna element for a phased array. 

In Tim’s free time he enjoys music production and tinkering with challenging electrical and mechanical projects, which most recently include restoring a 1960s Curtis Mathes super-heterodyne radio tube amplifier unit. As he completes the Masters degree at University of Colorado, Boulder, Tim serves the HAM radio club as its Chief Technical Officer. Tim’s current research interests include antenna design, active and phased antenna arrays, and computational EM and Method of Moments, for which he is authoring an efficient MoM solver for a reconfigurable intelligent surface. 

Jacob Stewart

Undergraduate Researcher

Jacob Stewart is pursuing a Bachelor of Science in Electrical Engineering in the hopes of understanding everything the field has to offer, from the quantum interaction between photons and electrons, to how those interactions produce the computers, power infrastructure, and technological world that we know today. Jacob is also pursuing a Bachelor of Arts in Music to explore the classical genre at a deeper level, and to learn the historical role music has played in culture. 

In his free time, Jacob can’t help but experiment with self hosting projects using Docker, and often falls down rabbit holes exploring open source alternatives. 

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