Zobrazeno 1 - 10
of 186
pro vyhledávání: '"Lu, Ruochen"'
In an effort to shift the paradigm of power conversion, acoustic resonators pose as compact alternatives for lossy magnetic inductors. Currently, the acoustic resonator's restricted inductive region between its series and parallel resonances constitu
Externí odkaz:
http://arxiv.org/abs/2409.15686
Autor:
Anderson, Ian, Tsu, Tzu-Hsuan, Chulukhadze, Vakhtang, Kramer, Jack, Cho, Sinwoo, Barrera, Omar A., Campbell, Joshua, Li, Ming-Huang, Lu, Ruochen
This paper presents surface acoustic wave (SAW) acoustic delay lines (ADL) for studying propagation loss mechanisms in Lithium Niobate (LN). Devices were fabricated by depositing 50 nm aluminum patterns on 600 nm X-Cut LN on amorphous silicon on sili
Externí odkaz:
http://arxiv.org/abs/2409.14272
Autor:
Barrera, Omar, Ravi, Nishanth, Saha, Kapil, Dasgupta, Supratik, Campbell, Joshua, Kramer, Jack, Kwon, Eugene, Hsu, Tzu-Hsuan, Cho, Sinwoo, Anderson, Ian, Simeoni, Pietro, Hou, Jue, Rinaldi, Matteo, Goorsky, Mark S., Lu, Ruochen
This work reports an acoustic solidly mounted resonator (SMR) at 18.64 GHz, among the highest operating frequencies reported. The device is built in scandium aluminum nitride (ScAlN) on top of silicon dioxide (SiO2) and tantalum pentoxide (Ta2O5) Bra
Externí odkaz:
http://arxiv.org/abs/2407.02741
This work reports the procedure for modeling piezoelectric acoustic resonators and filters at millimeter wave (mmWave). Different from conventional methods for lower frequency piezoelectric devices, we include both acoustic and electromagnetic (EM) e
Externí odkaz:
http://arxiv.org/abs/2405.19591
Autor:
Chulukhadze, Vakhtang, Kramer, Jack, Hsu, Tzu-Hsuan, Barrera, Omar, Anderson, Ian, Cho, Sinwoo, Campbell, Joshua, Lu, Ruochen
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 significa
Externí odkaz:
http://arxiv.org/abs/2405.08139
Acoustic devices offer significant advantages in size and loss, making them ubiquitous for mobile radio frequency signal processing. However, the usable bandwidth is often limited to the achievable electromechanical coupling, setting a hard limit usi
Externí odkaz:
http://arxiv.org/abs/2405.08132
This work reports the first study of periodically poled piezoelectric film (P3F) lithium niobate (LiNbO3) resonators at cryogenic temperatures. We experimentally investigate the temperature dependency of resonant frequencies and quality factor (Q) of
Externí odkaz:
http://arxiv.org/abs/2403.09822
Publikováno v:
Journal of Microelectromechanical Systems, 2024, Early Access
In this work, we demonstrate a C-band shear-horizontal surface acoustic wave (SH-SAW) resonator with high electromechanical coupling (kt2) of 22% and a quality factor (Q) of 565 based on a thin-film lithium niobate (LN) on silicon carbide (SiC) platf
Externí odkaz:
http://arxiv.org/abs/2402.16732
Autor:
Cho, Sinwoo, Barrera, Omar, Kramer, Jack, Chulukhadze, Vakhtang, Hsu, Tzu-Hsuan, Campbell, Joshua, Anderson, Ian, Lu, Ruochen
Publikováno v:
IEEE Microwave and Wireless Technology Letters, vol. 34, no. 4, pp. 391-394, April 2024
This paper reports the first piezoelectric acoustic filter in periodically poled piezoelectric film (P3F) lithium niobate (LiNbO3) at 23.8 GHz with low insertion loss (IL) of 1.52 dB and 3-dB fractional bandwidth (FBW) of 19.4%. The filter features a
Externí odkaz:
http://arxiv.org/abs/2402.12194
Autor:
Hsu, Tzu-Hsuan, Campbell, Joshua, Kramer, Jack, Cho, Sinwoo, Lee, Zhi-Qiang, Li, Ming-Huang, Lu, Ruochen
Publikováno v:
2024 IEEE MTT-S International Conference on Microwave Acoustics & Mechanics (IC-MAM), Chengdu, China, 2024, pp. 117-120
In this work, we investigate the frequency scaling of shear-horizontal (S.H.) surface acoustic wave (SAW) resonators based on a lithium niobate on insulator (LNOI) substrate into the centimeter bands for 6G wireless systems. Prototyped resonators wit
Externí odkaz:
http://arxiv.org/abs/2402.11508