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Finite-element analysis of scattering parameters of surface acoustic wave bandpass filter formed on barium titanate thin film

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International Journal of Smart and Nano Materials 2018年第2期9卷 88-98,I0002页

作者： Pavel E.Timoshenko Valery V.Kalinchuk Vladimir B.Shirokov Department of Nanotechnology Southern Federal UniversityRostov-on-DonRussia Southern Scientific Center RAS Rostov-on-DonRussia

The frequency dependence of scattering parameters of interdigital surface acoustic wave transducers placed on ferroelectric barium titanate(BaTiO_(3))epitaxial film in c-phase coated over magnesium oxide has been studied using the finite-element method(FEM)approach along with the perfectly matched layer(PML)*** interdigital transducer which has a comb-like structure with aluminum electrodes excites the mechanical *** distance between the fingers allows tuning the frequency properties of the wave *** magnesium oxide is taken as the *** two-dimensional model of two-port surface acoustic wave filter is created to calculate scattering parameters and to show how to design the fixture in COMSOL_(TM).Some practical computational challenges of finite element modeling of saw devices in COMSOL_(TM)are *** effect of lattice misfit strain on acoustic properties of heterostructures of BaTiO_(3)epitaxial film in c-phase at room temperature is discussed in present article for two lowfrequency surface acoustic resonances.

关键词： saw filters ferroelectrics thin films finite element method(FEM) COMSOL

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The Simulation and Design of saw Filter Using Slanted Finger Which Slopes Diversely at Different Sub-segment

The Simulation and Design of SAW Filter Using Slanted Finger...

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2006 8th International Conference on Solid-State and Integrated Circuit Technology

作者： Zhanhe Wang Jie Zhan Department of Electronics Engineering Beijing Institute of Technology

ISBN: (纸本)1424401615;9781424401611

＜正＞This paper describes current development of surface acoustic wave filter（sawF） using slanted finger interdigital transducer（SFIT）,and then the principle of the SFIT is introduced by using the impulse response *** the same time,the paper also puts forward a new structure which slopes at different *** simulation result shows that various frequency response could be fulfilled by changing the steepening angle of the sub-segments.

关键词： saw filters sub-segments SFIT frequency response

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