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February 2024

Phase-Change RF Devices for Future Communications: Phase-Change Materials and Devices for Reconfigurable RF Front-Ends: State-of-the-Art and Future Perspectives

by Tejinder Singh, Navjot Kaur Khaira, Morris Repeta and Raafat R. Mansour

Abstract: This paper begins with an overview presentation of phase change material (PCM) principles and considerations that find Germanium Telluride (GeTe) devices to have some clear advantages for RF applications. The overview continues with an examination of PCM characterization and fabrication techniques and proceeds to an in-depth discussion of RF switching implementations with a variety of approaches to highlight PCM advantages. The paper ends with an eye to the future to highlight a number of specific 5G and 6G applications along with a number of state-of-the-art reconfigurable RF front end applications built with PCM devices including multiple phase shifters, scalable crossbar switches and variable attenuators.

https://ieeexplore.ieee.org/document/10387991