49 citations · 314 across the 30 of their papers we have counts for
32 papers
High-Velocity Whip-Mode Microresonator in LTOI Unimorph: Measurement Methodology and Large-Signal Characterization
Tzu-Hsuan Hsu, Zihuan Liu, Harshvardhan Gupta +6
This paper presents the design, characterization, and large-signal measurement methodology of a high-order whip-mode flexural microresonator on a lithium tantalate-on-insulator (LT…
Bimorph Lithium Niobate Thickness-Shear Overtone Film Bulk Acoustic Resonator
Ziqian Yao, Ian Anderson, Tzu-Hsuan Hsu +3
High quality factor () and overtone operation enable narrow-linewidth acoustic devices with multiple discrete frequencies in a single cavity. Maintaining both high and suffi…
Emergence of millimeter-wave resonances in self-assembled ferroelectric metamaterials
Florian Bergmann, Peter Meisenheimer, Aiden Ross +26
Resonators are a key component in modern communications and computing. As demand and technological advances push component requirements into the terahertz regime, there is signific…
Nonlinear Characterization of Thin-Film LiNbO3 Acoustic Filters
Omar Barrera, Bryan T. Bosworth, Taran Anusorn +10
Compact, high-performance components in millimeter-wave (mmWave) communication systems demand new acoustic filter technology at increasingly higher frequencies. Among various promi…
Uncooled low-noise thin-film optomechanical resonator for thermal sensing on lithium niobate
Yue Yu, Ran Yin, Ian Anderson +9
Optomechanical transduction harnesses the interaction between optical fields and mechanical motion to achieve sensitive measurement of weak mechanical quantities with inherently lo…
Phononic Combs in Lithium Niobate Acoustic Resonators
Ian Anderson, Jack Kramer, Tzu-Hsuan Hsu +3
Frequency combs consist of a spectrum of evenly spaced spectral lines. Optical frequency combs enable technologies ranging from timing, LiDAR, and ultra-stable signal sources. Micr…
An 11.7-GHz ScAlN FBAR Filter: Case Study on Scaling Limits and Challenges
Sinwoo Cho, Byeongjin Kim, Lezli Matto +9
This paper reports an 11.7 GHz compact 50 ohm ladder filter based on single layer Scandium Aluminum Nitride (ScAlN) film bulk acoustic resonators (FBARs) with platinum (Pt) electro…
Periodically Poled Piezoelectric Lithium Niobate Resonator for Piezoelectric Power Conversion
Ziqian Yao, Clarissa Daniel, Lezli Matto +8
As the demand for compact and efficient power conversion systems increases, piezoelectric power converters have gained attention for their ability to replace bulky magnetic inducto…
50 GHz Piezoelectric Acoustic Filter
Omar Barrera, Jack Kramer, Lezli Matto +5
This paper presents significant frequency scaling of acoustic filter technology to 50 GHz. This achievement is enabled by the P3F LiNbO3 multilayer stack, in which piezoelectric th…
19.3 GHz Acoustic Filter with High Close-in Rejection in Tri-layer Thin-Film Lithium Niobate
Omar Barrera, Sinwoo Cho, Jack Kramer +3
Acoustic filters are preferred front-end solutions at sub-6 GHz due to their superior frequency selectivity compared to electromagnetic (EM) counterparts. With the ongoing developm…
Practical Demonstrations of FR3-Band Thin-Film Lithium Niobate Acoustic Filter Design
Taran Anusorn, Omar Barrera, Jack Kramer +4
This article presents an approach to control the operating frequency and fractional bandwidth (FBW) of miniature acoustic filters in thin-film lithium niobate (TFLN). More specific…
High-Q Millimeter-Wave Acoustic Resonators in Thin-Film Lithium Niobate Using Higher-Order Antisymmetric Modes
Vakhtang Chulukhadze, Jack Kramer, Tzu-Hsuan Hsu +2
This letter presents miniature millimeter wave (mmWave, above 30 GHz) acoustic resonators based on a single-layer thin-film lithium niobate (LN) platform. More specifically, we pre…
Thin-film scandium aluminum nitride bulk acoustic resonator with high Q of 208 and K2 of 9.5% at 12.5 GHz
Sinwoo Cho, Yinan Wang, Eugene Kwon +9
This work describes sputtered scandium aluminum nitride (ScAlN) thin-film bulk acoustic resonators (FBAR) at 12.5 GHz with high electromechanical coupling (k2) of 9.5% and quality…
Ku-Band AlScn-On-Diamond SAW Resonators with Phase Velocity above 8600 m/s
Tzu-Hsuan Hsu, Kapil Saha, Jack Kramer +4
In this work, an Aluminum Scandium Nitride (AlScN) on Diamond Sezawa-mode surface acoustic wave (SAW) platform for RF filtering at Ku-band (12-18 GHz) is demonstrated. Thanks to th…
Acoustic resonators above 100 GHz
Jack Kramer, Bryan T. Bosworth, Lezli Matto +8
Piezoelectric resonators are a common building block for signal processing because of their miniature size, low insertion loss, and high quality factor. As consumer electronics pus…
Low-Loss Higher-Order Cross-Sectional Lamé Mode SAW Devices in 10-20 GHz Range
Ian Anderson, Tzu-Hsuan Hsu, Vakhtang Chulukhadze +6
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 5…
18 GHz Solidly Mounted Resonator in Scandium Aluminum Nitride on SiO2/Ta2O5 Bragg Reflector
Omar Barrera, Nishanth Ravi, Kapil Saha +12
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 (ScAl…
Acoustic and Electromagnetic Co-Modeling of Piezoelectric Devices at Millimeter Wave
Tianyi Zhang, Yen-Wei Chang, Omar Barrera +3
This work reports the procedure for modeling piezoelectric acoustic resonators and filters at millimeter wave (mmWave). Different from conventional methods for lower frequency piez…
2 to 16 GHz Fundamental Symmetric Mode Acoustic Resonators in Piezoelectric Thin-Film Lithium Niobate
Vakhtang Chulukhadze, Jack Kramer, Tzu-Hsuan Hsu +5
As 5G connectivity proliferates, signal processing applications at 6G centimeter bands have gained attention for urban wireless capacity expansion. At sub-5 GHz, acoustic resonator…
Ultra-Wideband Tapered Transducers in Thin-Film Lithium Niobate on Silicon Carbide
Jack Kramer, Tzu-Hsuan Hsu, Joshua Campbell +1
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…
Experimental Study of Periodically Poled Piezoelectric Film Lithium Niobate Resonator at Cryogenic Temperatures
Jack Kramer, Omar Barrera, Sinwoo Cho +3
This work reports the first study of periodically poled piezoelectric film (P3F) lithium niobate (LiNbO3) resonators at cryogenic temperatures. We experimentally investigate the te…
Thin-film Lithium Niobate on Insulator Surface Acoustic Wave Devices for 6G Centimeter Bands
Tzu-Hsuan Hsu, Joshua Campbell, Jack Kramer +4
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 t…
C-Band Lithium Niobate on Silicon Carbide SAW Resonator With Figure-of-Merit of 124 at 6.5 GHz
Tzu-Hsuan Hsu, Joshua Campbell, Jack Kramer +3
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 ba…
23.8-GHz Acoustic Filter in Periodically Poled Piezoelectric Film Lithium Niobate With 1.52-dB IL and 19.4% FBW
Sinwoo Cho, Omar Barrera, Jack Kramer +5
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…