Results 31 to 40 of about 439 (222)

Structure-Size Optimization and Fabrication of 3.7 GHz Film Bulk Acoustic Resonator Based on AlN Thin Film

Frontiers in Materials, 2021
Traditional radio frequency filters cannot meet the demands of miniaturization, high frequency operation, integration, and broadband capacity in new-generation communication system owing to their larger volumes. A thin film bulk acoustic resonator (FBAR)
Pingying Jiang, Shiping Mao, Zaifang An, Chunlong Fei, Lifei Lou, Zhaoxi Li, Tianlong Zhao, Shiyi Jiang, Yintang Yang   +8 more
doaj   +1 more source

Area Dependence of Effective Electromechanical Coupling Coefficient Induced by On-Chip Inductance in LiNbO3-Based BAW Resonators

, 2022
To solve the problem of filter bandwidth in 5G communication, it is urgent to develop an acoustic resonator with a large effective electromechanical coupling coefficient (Keff2).
Yao Shuai, Lu Lv, Dailei Zhu, Shitian Huang, Yuedong Wang, Xinqiang Pan, Chuangui Wu, Wanli Zhang, Wenbo Luo   +8 more
core   +1 more source

Design and Analysis of Lithium–Niobate-Based Laterally Excited Bulk Acoustic Wave Resonator with Pentagon Spiral Electrodes

Micromachines, 2023
In this paper, we present a comprehensive study on the propagation and dispersion characteristics of A1 mode propagating in Z-cut LiNbO3 membrane. The A1 mode resonators with pentagon spiral electrodes utilizing Z-cut lithium niobate (LiNbO3) thin film ...
Ying Xie, Wenjuan Liu, Yao Cai, Zhiwei Wen, Tiancheng Luo, Yan Liu, Chengliang Sun   +6 more
doaj   +1 more source

Design and 3D FEM Analysis of a Flexible Piezoelectric Micromechanical Ultrasonic Transducer Based on Sc-Doped AlN Film

Sensors, 2022
In this paper, a flexible piezoelectric micromachined ultrasonic transducer (PMUT) based on Scandium (Sc)-doped Aluminum Nitride (AlN) film was designed and modeled by the three-dimensional finite element method (3D-FEM).
Qinghua Ren, Junhong Chen, Xin Liu, Songsong Zhang, Yuandong Gu   +4 more
doaj   +1 more source

Tunable Electromechanical Coupling Coefficient of a Laterally Excited Bulk Wave Resonator with Composite Piezoelectric Film

, 2022
A resonator with an appropriate electromechanical coupling coefficient (Kt2) is crucial for filter applications in radio communication. In this paper, we present an effective method to tune the Kt2 of resonators by introducing different materials into a ...
Yan Liu, Bo Soon, Wenjuan Liu, Lei Wang, Chengliang Sun, Jieyu Liu, Ying Xie, Yao Cai   +7 more
core   +1 more source

Improvement in the Electromechanical Properties of a Partially Diced Piezoelectric Disc Transducer

IEEE Access, 2018
Piezoelectric discs vibrating in the thickness mode are widely used in underwater electroacoustic and electromechanical applications. It is well known and established that the first fundamental mode along the thickness of the disc determines the ...
Sairajan Sarangapani, Xiang Yan
doaj   +1 more source

Demonstration of Thin Film Bulk Acoustic Resonator Based on AlN/AlScN Composite Film with a Feasible $K_{eff}^2$

Micromachines, 2022
Film bulk acoustic resonators (FBARs) with a desired effective electromechanical coupling coefficient (Keff2) are essential for designing filter devices.
Laixia Nian, Yang Zou, Chao Gao, Yu Zhou, Yuchen Fan, Jian Wang, Wenjuan Liu, Yan Liu, Jeffrey Bowoon Soon, Yao Cai, Chengliang Sun   +10 more
doaj   +1 more source

Super-High-Frequency Bulk Acoustic Resonators Based on Aluminum Scandium Nitride for Wideband Applications

Nanomaterials, 2023
Despite the dominance of bulk acoustic wave (BAW) filters in the high-frequency market due to their superior performance and compatible integration process, the advent of the 5G era brings up new challenges to meet the ever-growing demands on high ...
Wentong Dou, Congquan Zhou, Ruidong Qin, Yumeng Yang, Huihui Guo, Zhiqiang Mu, Wenjie Yu   +6 more
doaj   +1 more source

Multilevel Modeling of 1-3 Piezoelectric Energy Harvester Based ‎on Porous Piezoceramics [PDF]

Journal of Applied and Computational Mechanics, 2023
The paper presents a computer analysis of the properties of a piezoelectric composite consisting of porous piezoceramic rods regularly arranged in an elastic matrix (piezocomposite with a connectivity of 1-3).
Thanh Binh Do, Andrey Nasedkin, Pavel Oganesyan, Arcady Soloviev   +3 more
doaj   +1 more source

Influence of effective electrode coverage on the energy harvesting performance of piezoelectric cantilevers

, 2021
Cantilevers are widely used for piezoelectric vibration energy harvesters (PEHs), thanks to the low resonance frequency and large mechanical strain under weak excitations. Electrode coverage optimization is essential for maximizing output power.
Hu, Kun, Zhou, Bin, Wang, Fei, Yang, Zhengbao, Wang, Min   +4 more
core   +1 more source