A 3.4–3.6 GHz High-Selectivity Filter Chip Based on Film Bulk Acoustic Resonator Technology
Electronics (Switzerland), 2023 The development of mobile 5G technology poses new challenges for high-frequency and high-performance filters. However, current commercial acoustic wave filters mainly focus on 4G LTE, which operates below 3 GHz.
, Yongle Wu, Weimin Wang
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Demonstration of Thin Film Bulk Acoustic Resonator Based on AlN/AlScN Composite Film with a Feasible Keff2. [PDF]
Micromachines (Basel), 2022 Film bulk acoustic resonators (FBARs) with a desired effective electromechanical coupling coefficient (Keff2) are essential for designing filter devices.
Nian L +10 more
europepmc +2 more sources
Design and Fabrication of 3.5 GHz Band-Pass Film Bulk Acoustic Resonator Filter. [PDF]
Micromachines (Basel)With the development of wireless communication, increasing signal processing presents higher requirements for radio frequency (RF) systems. Piezoelectric acoustic filters, as important elements of an RF front-end, have been widely used in 5G-generation ...
Zhou Y +10 more
europepmc +2 more sources
LiNbO3 Film Bulk Acoustic Resonator
, 2010 As layer transfer techniques have been notably improved these passed years, lithium niobate (LiNbO3) appears as a candidate for the next generation of ultra wide band RadioFrequency (RF) filters. Depending on the crystalline orientation, LiNbO3 can achieve electromechanical coupling factors Kt(2) more than 6 times larger than those of sputtered ...
Pijolat, M. +8 more
openaire +2 more sources
Acoustofluidic Biosensors. [PDF]
Micromachines (Basel)The rapid and precise detection of biomarkers and pathogens remains a critical challenge in clinical diagnostics. Traditional methodologies are frequently hindered by protracted workflows, complex sample preparation, and reliance on resource-intensive ...
Chen CJ, Kwon JS, Chuang HS.
europepmc +2 more sources
Vibration optimization of ZnO thin film bulk acoustic resonator with ring electrodes
AIP Advances, 2016 A rectangular ZnO thin film bulk acoustic resonator with ring electrodes is presented in this paper to demonstrate the existence of a nearly uniform displacement distribution at the central part of this typical resonator.
Zinan Zhao, Zhenghua Qian, Zhao Zinan
exaly +2 more sources
Switchable and tuneable high-performance acoustic modes in the L-X band using ferroelectric thin film on sapphire. [PDF]
Microsyst NanoengHigh overtone bulk acoustic resonators (HBAR) are advantageous for on-chip quantum acoustodynamics (QAD) system as it gives access to stream of phonon modes with high lifetime in the microwave frequency range while retaining low power consumption and ...
Kongbrailatpam SS +3 more
europepmc +2 more sources
Enhancement of Quality Factors in a 6.5 GHz Resonator Using Mo/SiC Composite Microstructures. [PDF]
Micromachines (Basel)This study addresses the critical challenge of lateral acoustic wave energy leakage in high-frequency film bulk acoustic resonators (FBARs) and elucidates the reflection mechanism of acoustic waves at acoustic reflection boundaries.
Lin B +8 more
europepmc +2 more sources
Fabrication of Air Cavity Structures Using DRIE for Acoustic Signal Confinement in FBAR Devices. [PDF]
Micromachines (Basel)Acoustic energy penetrates into the Si substrate at cavity boundaries. Due to this, the air cavity-based bulk acoustic resonators experience higher harmonic mode, parasitic resonance, and spurious mode.
Patel R +3 more
europepmc +2 more sources
Recent Advances in AlN-Based Acoustic Wave Resonators. [PDF]
Micromachines (Basel)AlN-based bulk acoustic wave (BAW) filters have emerged as crucial components in 5G communication due to their high frequency, wide bandwidth, high power capacity, and compact size.
Lu H +7 more
europepmc +2 more sources