Category: News

Walter Disharoon Receives GTRI Fellowship

GTRI’s Graduate Student Research Fellowship Program provides funding for seven new projects, including research on reconfigurable metasurfaces for high-power microwave systems. Led by graduate researcher Walter Disharoon, accompanied by ECE Professor Nima Ghalichechian and Dr. Joshua Kovitz, chief scientist of the electromagnetics division at GTRI, the project aims to develop versatile metasurfaces using vanadium dioxide (VO2) to manipulate electromagnetic waves. The team will focus on designing, fabricating, and characterizing the metasurfaces to enhance their functionality and defense capabilities. Congratulations Walter!

(Link1) (Link2)

High power beamsteerable reflectarray paper is published in IEEE TAP

Our new work on high power beamsteerable reflectarray is recently published in IEEE Transactions on Antenna and Propagation. Full citation of this work is as following: K. Q. Henderson, W. Disharoon and N. Ghalichechian, “Towards High Power Beam Steerable Reflectarrays Using Tunable Height Dielectric,” in IEEE Transactions on Antennas and Propagation, doi: 10.1109/TAP.2023.3238671.

Congratulations!

Professor Ghalichechian presented at the Radio Club of America!

Professor Ghalichechian presented at the Radio Club of America Technical Symposium, held at Hyatt Regency Hotel in downtown Atlanta, November 19, 2022. His talk was titled: “Antennas and Arrays for Future 5G Systems”

Abstract: Today’s wireless communications systems operate mostly in the microwave bands, which have become a crowded and limited resource. Yet significantly larger bandwidth is available in the mmWave band of 30 to 300 GHz, offering the potential of huge increases in data rates for next generation devices. This talk will review the state-of-the-art in antenna and array research for future mmWave systems. Furthermore, recent research and progress made at Prof. Ghalichechian’s mmWave Antennas and Arrays Laboratory at Georgia Tech is presented.

Antenna-coupled VO2 sensor paper published in APL

Our new work on antenna-coupled VO2 sensors for mmWave imaging is recently published in Applied Physics Letters. Full citation of this work is as following: S. Chen, M. Lust, and N. Ghalichechian, “Antenna-Coupled Microbolometer Based on VO2’s Non-linear Properties Across the Metal-Insulator Transition Region”, Applied Physics Letters, vol. 121, no. 20, pp. 201901, 2022, doi: 10.1063/5.0123779.