1. 2 to 16 GHz Fundamental Symmetric Mode Acoustic Resonators in Piezoelectric Thin-Film Lithium Niobate
- Author
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Chulukhadze, Vakhtang, Kramer, Jack, Hsu, Tzu-Hsuan, Barrera, Omar, Anderson, Ian, Cho, Sinwoo, Campbell, Joshua, and Lu, Ruochen
- Subjects
Physics - Applied Physics - Abstract
As 5G connectivity proliferates, signal processing applications at 6G centimeter bands have gained attention for urban wireless capacity expansion. At sub-5 GHz, acoustic resonators operating in the fundamental symmetric (S0) Lamb mode hold significant promise if frequency scaled to the 6G centimeter bands. Concurrently, the lateral wavelength dependency and the traveling wave nature of S0 mode enable monolithic multi-frequency fabrication, transversal filters, correlators, and other compact signal processing components. In this work, we present thin-film lithium niobate (LN) S0 resonators scaled up to 16 GHz. Specifically, we study the characteristics of the S0 mode as the wavelength is minimized and showcase a device at 14.9 GHz with a Bode Q maximum of 391, a k2 of 6%, and a figure of merit (FoM) of 23.33, surpassing the state-of-the-art (SoA) in its frequency range., Comment: 4 pages, 8 figures, to be presetned in Hilton Head 2024,the 19th in the series of Hilton Head Workshops on the science and technology of solid-state sensors, actuators, and microsystems
- Published
- 2024