High frequency and large bandwidth are growing trends in communication radio-frequency devices. The LiNbO thin film material is expected to become the preferred piezoelectric material for high coupling resonators in the 5G frequency band due to its ultra-high piezoelectric coefficient and low loss characteristics. The main mode of laterally excited bulk acoustic wave resonators (XBAR) have an ultra-high sound velocity, which enables high-frequency applications. However, the interference of spurious modes is one of the main reasons hindering the widespread application of XBAR. In this paper, a Z-cut LiNbO thin film-based XBAR with arc-shaped electrodes is presented. We investigate the electric field distribution of the XBAR, while the irregular boundary of the arc-shaped electrodes affects the electric field between the existing interdigital transducers (IDTs). The mode shapes and impedance response of the XBAR with arc-shaped electrodes and the XBARs with traditional IDTs are compared in this work. The fabricated XBAR on a 350 nm Z-cut LiNbO thin film with arc-shaped electrodes operating at over 5 GHz achieves a high effective electromechanical coupling coefficient of 29.8% and the spurious modes are well suppressed. This work promotes an XBAR with an optimized electrode design to further achieve the desired performance.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596732 | PMC |
| http://dx.doi.org/10.3390/mi15111367 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A Laterally Excited Bulk Acoustic Wave Resonator Based on LiNbO with Arc-Shaped Electrodes.
Micromachines (Basel)
November 2024
The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China.
High frequency and large bandwidth are growing trends in communication radio-frequency devices. The LiNbO thin film material is expected to become the preferred piezoelectric material for high coupling resonators in the 5G frequency band due to its ultra-high piezoelectric coefficient and low loss characteristics. The main mode of laterally excited bulk acoustic wave resonators (XBAR) have an ultra-high sound velocity, which enables high-frequency applications.
View Article and Find Full Text PDFEnhancing microalgal biomass production in lab-scale raceway ponds through innovative computational fluid dynamics-based electrode deflectors.
Bioresour Technol
February 2024
School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China. Electronic address:
The design of novel electrode deflector structures (EDSs) introduced a promising strategy for enhancing raceway ponds performance, increasing carbon fixation, and improving microalgal biomass accumulation. The computational fluid dynamics, based flow field principles, proved that the potency of arc-shaped electrode deflector structures (A-EDS) and spiral electrode deflector structures (S-EDS) were optimal. These configurations yielded superior culture effects, notably reducing dead zones by 9.
View Article and Find Full Text PDFEffect of Channel Shape on Performance of Printed Indium Gallium Zinc Oxide Thin-Film Transistors.
Micromachines (Basel)
November 2023
Key Laboratory of Architectural Cold Climate Energy Management, Ministry of Education, Jilin Jianzhu University, 5088 Xincheng Street, Changchun 130118, China.
Printing technology will improve the complexity and material waste of traditional deposition and lithography processes in device fabrication. In particular, the printing process can effectively control the functional layer stacking and channel shape in thin-film transistor (TFT) devices. We prepared the patterning indium gallium zinc oxide (IGZO) semiconductor layer with Ga, In, and Zn molar ratios of 1:2:7 on Si/SiO substrates.
View Article and Find Full Text PDFScreen-printed highly stretchable and stable flexible electrodes with a negative Poisson's ratio structure for supercapacitors.
Nanoscale
January 2023
College of Mechanical Engineering, Northeast Electric Power University, Jilin, China.
Flexible power sources are crucial to developing flexible electronic systems; nonetheless, the current poor stretchability and stability of flexible power sources hinder their application in such devices. Accordingly, the stretchability and fatigue stability of flexible power sources are crucial for the practical application of flexible electronic systems. In this work, a flexible electrode with an arc-shaped star concave negative Poisson's ratio (NPR) structure is fabricated through the screen printing process.
View Article and Find Full Text PDFAcoustic Change Complex Evoked by Horizontal Sound Location Change in Young Adults With Normal Hearing.
Front Neurosci
June 2022
Department of Otolaryngology Head and Neck Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.
Acoustic change complex (ACC) is a cortical auditory-evoked potential induced by a change of continuous sound stimulation. This study aimed to explore: (1) whether the change of horizontal sound location can elicit ACC; (2) the relationship between the change of sound location and the amplitude or latency of ACC; (3) the relationship between the behavioral measure of localization, minimum audible angle (MAA), and ACC. A total of 36 normal-hearing adults participated in this study.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!